S14 Build

General discussion forum about the 240sx, and a great place to introduce yourself to the board!
jonny96
Posts: 50
Joined: Mon Mar 14, 2011 8:31 pm
Car: 1995 240sx
1996 240sx SE
Location: Nor Cal

Post

I’m building a 1996 se 240sx for drift.

About the car:
I purchased the car from my friend who put coil overs on it, welded the diff, swapped in a manual transmission, had a one piece drive line installed and replaced the clutched fan with an altima fan. It also came with a cold air intake. It was primered gray when I bought it.

I tested the psi across all four cylinders and got within a few psi of 170 on all of them. :biggrin: I think starting life paired with an automatic transmission is the reason why this motor is so strong still at 200K miles.

So far I’ve:
• replaced the clutch twice (the second time going with a pressure plate with more clamping force than stock and a kevlar disc)
• Installed a drift e-brake knob
• Installed a knock off race seat
• Installed a godspeed SR20 radiator with dual electric fans (this required some interesting radiator hose work) :gapteeth:
• Installed an S13 3 inch cat back exhaust (still need to go to the muffler shop and have them make some minor bends to the pipe, but it works)
• Replaced the clutch master and slave cylinders
• installed the JGS urethane transmission mount
• Made and installed flexane motor mounts that are slightly shorter than stock to drop the motor a tad (they are bolted to the brackets coming off of the motor, but I haven’t dropped the motor down yet),
• Had an oil return bung welded into my oil pan in preparation for going KA-T
• Installed S13 PSM SAK knuckles (the original SAK) and reinforced arms from an S13.
• Swapped on some aftermarket S13 five lug hubs I just happened to have.
• Installed S13 Tien coil overs

I plan to detail some of the mods in later posts.

In case you hadn’t noticed I have an S13 that I raped for the S14 cause :naughty: , some day I will build that car too. It has a lot going for it still: LS1 crossmemeber, BAR sticker to be CA smog legal with an ls1 :yesnod , modded steering rack to hook to LS1 power steering, fully adjustable rear suspension, Johnny Fraz Power Bar, J30 rear end and axles, and a wire tuck with wiring mods to accomadate the LS1 ecu, with some sick a** super deep dish 18” SSR Vienna Krieses in the rear. :cool:

I hit the wall with my front end at Infineon and then my wife looped the car into another on the street damaging the front end of both cars. :cry: As a result I have replaced the headlights, corners, bumper and fenders with some cheap craigslist replacements and then painted the car black.

Future plans include adjustable TC rods, adjustable rear arms, TC rod bracket power brace, Strut bar, roll cage, and KA-T (for which I have about half of what I need so far). I’m still undecided about the next step for my front end. Thinking about sending in the S14 knux I got sitting around to PSM and having stock S14 arms reinforced with COR TC rods and sway bar. Right now I’m waiting on my Ikeya Inner tie rods, steering rack spacers, and steering rack eccentric bushing from PSM (they should be here any day). :ohno: I have new moog S14 outers and Energy suspension sway bar bushes with new end links ready to go on.

So I’ll be headed off to the alignment shop soon. Here are my understandings of caster and king pin inclination to help explain my reasoning for how I want to set up my car.

Caster is the angle of the lower ball joint pivot to upper ball joint/strut pivot in a front to back orientation (visually seen from the side view) vs a line running vertically through the lower ball joint pivot. Positive caster is when the upper pivot point is angled more toward the rear of the car. Positive caster adds negative camber on the outside wheel during a turn to compensate for body roll maintaining tire contact with the road (great for grip). In counter steer during a drift the tire that determines your direction is actually the inside tire, which will undergo positive camber change with positive caster. This can reduce front grip while counter steering. Positive caster also helps to center the wheel because it places the point where the steering axis hits the ground (the Dave point) in front of the contact patch of the tire. More positive caster will make the distance between the contact patch and the Dave point longer creating a longer moment arm. The longer the moment arm the more self aligning torque there will be. Caster will make the car want to counter steer during over steer. It would seem to me, though, that there is a point at which the direction of the tire is so different than front of the car (Dave point) that caster is no longer pulling your wheels toward lock.

King Pin Inclination Angle is the angle of the lower ball joint pivot to upper ball joint/strut pivot in a side to side orientation (visually seen from the front view) vs. a line running vertically through the lower ball joint pivot. The top pivot points are always closer to the middle of the car than the bottom. This angle makes the spindle follow an upside u with the apex being when the wheel is centered. The path of the KPA makes the wheel want to positive camber in both directions (offset on the outside wheel by caster and exacerbated on the inside wheel by caster). It also lifts the body by pushing the wheel down in both directions. The car’s weight will want to keep the spindle at the apex or centered. This creates self-centering, but does not induce counter steer during over steer.

With my S13 arms on an S14 I am reducing the KPA and static negative camber (all other adjustments remaining the same) as I am pulling the lower ball joint pivot point toward the center of the car. I know I need some caster (I’ve read don’t go below 6.5*), but I think by reducing it along with reducing the KPA I will be flattening my inside wheel out at full lock and providing what I believe will be some slight but needed forward movement of the wheel which will hopefully provide enough clearance between the rear of my inside wheel at lock and the fender well after some BFH work.

I will be running 15-20mm of wheel spacers on each side (ends up putting my wheel out 8-13 mm on each side as track width is reduced 7mm each side by the arms). The jacking effects of the KPA on the car would seem to me to be exaggerated by spacers, reducing the KPA should offset this to a degree.

I plan to run my coil over top hats skewed so that as I gain negative camber (and increase my KPA) I lose positive caster, with the top of the coil over as far inward and forward as possible (I believe putting it very close to stock with the decreased track). My TC rods are stock for the time being so I will not be adjusting caster with them. My Tien coil overs have camber adjustability, so I’m hoping that I can achieve my static camber goals. I’m thinking about 4-4.5* of camber which from what I can tell is toward the useable heavy end for drifting. I’m also thinking that this will help reduce under steer as I won’t be gaining as much camber during a turn on my outside wheel with reduced caster.

I know that toe-in decreases Ackerman and I’m pretty sure increases turn in response. I already have reduced Ackerman with my knuckles. I’ve heard some people run a little toe out, but I’m not sure the reason why. I've read that Dan at PSM runs lower than stock caster and likes zero toe.

I'm probably going to maintain the current height, until I can get RC adjusted knuckles and subframe risers.

I would greatly appreciate any thoughts on the alignment or on other parts of the car as well.
Last edited by jonny96 on Thu May 23, 2013 9:48 pm, edited 5 times in total.


jonny96
Posts: 50
Joined: Mon Mar 14, 2011 8:31 pm
Car: 1995 240sx
1996 240sx SE
Location: Nor Cal

Post

The evolution of the body up to this point


Here’s what the car looked like when I first got it

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A little rear end damage.

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This pic shows the damage after I understeered into the wall at Infineon :blush:

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This is the damage after my wife’s little number :nono:

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Getting ready for better fenders, lights and bumper

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Back from the frame shop

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New paint and lights (The lip is off for repairs currently). :)

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Side profile (I need a better spray gun) :gotme

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Last edited by jonny96 on Mon Jul 30, 2012 1:02 am, edited 1 time in total.

jonny96
Posts: 50
Joined: Mon Mar 14, 2011 8:31 pm
Car: 1995 240sx
1996 240sx SE
Location: Nor Cal

Post

The last pic in the last post shows the car in the air getting the second new clutch.
While it was off the ground I decided to do the transmission mount and motor mounts and since I would have the motor lifted up to get the mounts out I decided it would be a good time to pull the oil pan off to have an oil return bung welded in. Then I got a wild hair up my arse and decided that I was going to swap over the suspension from my S13


Clutch:

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New Throwout bearing.

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JGS Transmission Mount:

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This picture is horrible, but you can see the spacers that drop the transmission crossmember down to line up with the urethane mount.

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DIY motor mounts. I made these out of all thread, nuts, washers and flexane 80 using a beer cup molding a la AZ Hitman’s write up. I purposefully took about a quarter inch out of the height from stock mounts. I have dropped the motor with the mounts into the crossmember and it sits quite a bit lower than stock. After I get the steering rack bolted in (waiting on the SREB) I’ll post up pics to show the new clearance between the rack and the pan. Hopefully someone will post up pics of the stock clearance so that I can get an idea of how far I dropped the motor. :poke:

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Drivers side heat shield wrapped

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Stock motor mount for comparison

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Oil pan

I got the pan out without removing the crossmember based on some thread that I read.
Here is the hole drilled with the bung in or a test fit.

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Had a buddy weld the bung in

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Painted

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Then I went to install it. I practiced how I woud get the pan up and bolt the oil pick up tube on while the pan was almost in place. It wasn’t going to happen without me ruining my liquid gasket. So…..I took the crossmember off anyway.

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At this point with the front of the car on jack stands and the front suspension already mostly apart the wild hair proceeded to make its way to where the sun don’t shine.

Out with the old

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In with the new/old.

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looks heavenly
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:yesnod
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Top hats rotated to adjust camber and caster

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New moog sway bar end links (definitely beefier than stock)

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Energy suspension front sway bar bushings

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Front sway bar cleaned up with the new end links on
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Lastly for this post: soldering the reverse light switch to its wires and putting in removable connectors (they will get electrical taped). When my buddy five speed swapped this car he had somebody solder the wires to the switch with no connectors and I had to cut it the first time I did the clutch.

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Waiting on my PBM order and I need to get some wheel spacers. More pics to follow and hopefully positive results after getting it on the track.
Last edited by jonny96 on Sun May 05, 2013 9:47 pm, edited 1 time in total.

jonny96
Posts: 50
Joined: Mon Mar 14, 2011 8:31 pm
Car: 1995 240sx
1996 240sx SE
Location: Nor Cal

Post

I got my Psm order today :mike and Installed the steering rack eccentric bushings, which then allowed me to drop my motor down for the last time. I then installed the sway bar with the new urethane bushings and the tie rods and got them pretty close to aligned. That's as far as I got before I had to get ready to go to the Giants game.

I'm going to get the alignment a little closer before marking the outer tie rods and taking them off to put the rack to tie rod boots on, which I've ordered but not received yet. Also, I ordered some wheel spacers from psm that I need before I can see where the BFH work needs to be done.

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She's tight now. I can't even fit one finger in :naughty:

between the rack and oil pan

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jonny96
Posts: 50
Joined: Mon Mar 14, 2011 8:31 pm
Car: 1995 240sx
1996 240sx SE
Location: Nor Cal

Post

Here is the link to my other thread about putting the s13 arms on my s14. There is some info there that didn't make it into this thread.

s13-flcas-into-s14-t555610.html

jonny96
Posts: 50
Joined: Mon Mar 14, 2011 8:31 pm
Car: 1995 240sx
1996 240sx SE
Location: Nor Cal

Post

My psm wheel spacers and energy suspension 4x4 shock bellows (steering rack boots) came in today. Just so happens that Dan from psm responded to an email today stating that stock steering rack boots should work fine for my setup. I got under the car and I could probably make these work, but he's right it looks like stock ones will work best.

I knew I would probably have to replace my extended wheel studs, with stock studs when I ordered the psm spacers and sure enough I do. I didn't know that s14 and s13 studs are different, but I do now.

So I've put in an order to parts geek for the steering rack boots and 10 stock s13 studs.

Waiting.....again.

Over the past couple days I've tied some loose ends up:

Tightened the end links on to the flcas
Bolted the transmission mount to the crossmember
Put a plug in the turbo oil drain bung, since I don't have a turbo on the car yet
Bolted the brackets/gussets from the engine block to the bottom of the bell housing
Put the fluid back in the transmission
Put the shifter and center console back in
Took the extended wheel studs out.

Pics to go with the post:

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Here are some pics I snapped of the exhaust and driveline since I was under there anyway.

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jonny96
Posts: 50
Joined: Mon Mar 14, 2011 8:31 pm
Car: 1995 240sx
1996 240sx SE
Location: Nor Cal

Post

It's been about 9 months since my last post. I've run into some issues that have prevented me from driving or working on the car. The clutch, needing a smog, motor mounts compressed too much and lack of funds are the reasons. When I got the car back together and on the ground with all the previously mentioned mods, including the upgraded pressure plate and kevlar disc, it wouldn't go into gear. :facepalm:

So.... I put the car back up on jackstands and pulled the transmission again (third time since I've had the car). The disc was a cheapy from ebay. :slap: I won't be buying cheap car parts on ebay anymore. The springs on the disc stuck out too far and the pressure plate tangs were contacting the metal plate that cover the springs on the disc. You can see the wear line on the inside of the tangs and you can see the marks that were made on the clutch disc spring cover.

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This is a profile picture of a stock disc and the cheap ebay disc next to each other where you can see how much more the ebay disc sticks out toward the pressure plate.

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I put an old stock disc in with the same pressure plate and the car shifted fine, but the clutch would slip really bad when you put your foot in it. With the car driving around I decided to attempt an alignment (with string and a level), but the patch of concrete that I used to work on cars at my old house (I moved in January) wasn't quite level, so it's far from perfect, but I can drive it around. I ended up rotating my tophats back to only be able to adjust camber with them as I needed all of the adjustment I could get to offset the positive camber affects of the shorter S13 flcas and have a decent amount of negative camber. I had to stop driving the car when the registration came up as it is a smog year and there are some things that need to be done to get the CEL to go off after the 5 speed swap. I non-oped the car.

Fast forward to April of this year. I have a little bit of money from my tax refund, so I have decided to do the clutch, make new motor mounts and get the car to pass smog. I decided to go with the Competition Clutch white bunny special (includes 18lbs flywheel, 250mm disc and pressure plate). I've purchased flexane 90 (harder than the flexane 80 I used before), grade 8 all thread and and the other materials to make new motor mounts. I also purchased a 1996 manual ECU, a CPS and an S14 speed sensor (my transmission is from an S13, but has an S14 bell housing) as these are needed to get the CEL to go off and pass smog. After some research and examining the car it looks like I will have to get the CPS sub harness to get the CPS wired in. I will also need to wire in the speed sensor (wiring appears to be missing) and various position sensors in the transmission.

At this point I have the new clutch in (with new rear main seal, throwout bearing and pilot bushing). I am waiting on a new clutch fork dust cover (mine is ripped and I've put too much money into the clutch to not replace this) before I stab the transmission back in. I also need to find the flexane I bought. :confused: I have the beer cups, allthread and other hardware ready to go.

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Old rear main seal

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New rear main seal

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New throw out bearing

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New Pressure plate, clutch disc and pilot bushing.

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Last edited by jonny96 on Wed May 22, 2013 1:45 pm, edited 5 times in total.

User avatar
Hijacker
Posts: 14373
Joined: Wed Aug 13, 2003 4:57 am
Car: '92 240sx Convertible
'94 F-150
Location: Fredericksburg, VA

Post

Good build so far! Gonna move this to 240 Gen Chat to generate more traffic for you.

jonny96
Posts: 50
Joined: Mon Mar 14, 2011 8:31 pm
Car: 1995 240sx
1996 240sx SE
Location: Nor Cal

Post

Thanks Bart. I wasn't sure where to put it when I started the thread.

User avatar
pepesilvia
Posts: 584
Joined: Tue Feb 21, 2012 8:15 pm
Car: 96 S14
Location: New Jersey :(

Post

this is actually a decent build thread, keep it updated :bigthumb:

jonny96
Posts: 50
Joined: Mon Mar 14, 2011 8:31 pm
Car: 1995 240sx
1996 240sx SE
Location: Nor Cal

Post

I got the new clutch fork dust boot cover on and the transmission back in (for the fourth time in two years).

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I took the car for a test drive and the clutch pedal is a lot stiffer. I won't be driving it hard until after the break in, so I don't know for sure that it's holding better (none of the other clutches that I changed gave me problems on the break in, only under harder driving).



I finally found the Flexane and the motor mounts are currently setting up in the molds.

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jonny96
Posts: 50
Joined: Mon Mar 14, 2011 8:31 pm
Car: 1995 240sx
1996 240sx SE
Location: Nor Cal

Post

The motor mounts out of the molds.


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I'm going to give them a couple more days to cure before I put them in.

User avatar
WDRacing
Moderator
Posts: 15983
Joined: Mon Nov 25, 2002 2:00 am
Car: 95 240SX, 99 BMW 540i, 01 Chevy Express, 14 Ford Escape
Location: MFFO
Contact:

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I wonder if 3 hockey pucks would work? The thickness seems close.

Good build thread!

jonny96
Posts: 50
Joined: Mon Mar 14, 2011 8:31 pm
Car: 1995 240sx
1996 240sx SE
Location: Nor Cal

Post

When I was looking into motor mount options I read a thread about the hockey pucks working pretty good. I decided to go with the flexane because it seems to me that with the fender washer in the middle and the flexane being one solid piece it would be the studier option. I also like that you can dial in the height of the mount with the flexane. I made my last ones too short and I believe the Flexane 80 material that I originally used was too soft. I have two goals that I'm hoping to accomplish with the mounts: taking some slop out of the out of the drive train and dropping the motor slightly. I've heard of people putting in aftermarket or new stock mounts and running into clearance issues with their top mounted turbo and/or strut brace. The flexane mounts can be made to (or trimmed to) a desired height. Dropping the motor has two added benefits: the center of gravity is lowered and it makes accessing the bellhousing to motor bolts on the top of the transmission easier.

Thanks for responding WD. I've read some of your posts on putting turbos on stock KA's and they have basically been my bible for what I've done to that end so far and what I plan to do in the future to see that part of my project completed. I have the JGS manifold, an intercooler, most of the turbo piping, and the oil return bung welded into the oil pan. The engine passed a compression test and runs really strong. For management I want to get a 300z MAF, an 8-bit KA24de ecu, an ostrich emulator, a wideband and run Tuner Pro. I also still need to get injectors (I'm thinking DeatschWerks 550s), a walbro fuel pump, a t3/t4 turbo, a waste gate (probably JGS) and corresponding exhaust pieces.

jonny96
Posts: 50
Joined: Mon Mar 14, 2011 8:31 pm
Car: 1995 240sx
1996 240sx SE
Location: Nor Cal

Post

driver side motor mount all dressed up (in header wrap).



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User avatar
WDRacing
Moderator
Posts: 15983
Joined: Mon Nov 25, 2002 2:00 am
Car: 95 240SX, 99 BMW 540i, 01 Chevy Express, 14 Ford Escape
Location: MFFO
Contact:

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Glad I could help man!

The new megasquirt stuff is really excellent. I suggest you check into it before making a decision on management. Here's a link.

I remember when Greg made a set of those motor mounts a few years back. I was like, "dang! That's a pretty good F'n idea!" With the hockey puck engine mounts, I would use some aluminum spacers in between the pucks to obtain the proper height/clearance. Just something to think about if your current mounts crap-the-bed.

You can't beat the JGS manifold. I've had it cut apart and rewelded into 3 different configurations now, it refuses to die.

jonny96
Posts: 50
Joined: Mon Mar 14, 2011 8:31 pm
Car: 1995 240sx
1996 240sx SE
Location: Nor Cal

Post

I checked out Megasquirt and their standalone system is pretty sick. It's a little more expensive than the route I'm planning to go (although it is inline with the price of nistune or nismotronic when you consider that I'd have to buy an S13 KA24de ecu and a harness conversion to make those work), but I really like the fact that you can put that wheel on the distributor for more accurate fuel injection timing and to be able to run coil packs.

I thought Greg's mounts looked like a good idea, too. I even bent his ear a little about them before I made my first set. If this set gives out I might just try the hockey pucks. I installed them and took them for a little test drive :shifter: (need to get my window sticker before I do too much driving) and everything felt great. Things are much firmer than with the stock (and I'm sure tired) mounts; my shifter used to be all over the place and now it doesn't seem to move at all. There is definitely some engine noise and vibration at idle, but it's not bad and it smoothes out as the rpms pick up. There is about 3/4 of an inch between the oil pan and steering rack, which seems decent. I'm sure it will settle a little more, but I can't imagine it will drop too low. From what I can tell the engine is sitting just a little lower than stock, but I honestly can't tell. I should have documented the distance between the rack and oil pan with the stock mounts in. If somebody would do that I would appreciate it.

And now time for some pron. BOW CHICKA WOW WOW.


Here is the passenger side mount and the best photo I could get of the pan to rack clearance (I know it's like chitty POV, I'll get a better shot showing the clearance next time I get the front off the ground).

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Here is the driver side mount. I painted it with black engine enamel as a prophylactic (this means preventative measure and is a synonym for condom, always wise when posting pron :chuckle:) against fraying of the header wrap. You can see the back up nut pretty good in this shot. I had the extra full size nuts and plenty of thread, so I just used them. Jam nuts would probably be a better solution here. These are important as you can't torque the motor mount nuts too hard (the flexane will just continue to compress) and as such the back up nuts are needed to lock the nuts in place. I just typed nuts way too many times.

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Gonna taker her to the track on the 12th (hopefully).

jonny96
Posts: 50
Joined: Mon Mar 14, 2011 8:31 pm
Car: 1995 240sx
1996 240sx SE
Location: Nor Cal

Post

Apparently Wednesday night drifting at Sonoma Raceway is selling out weeks ahead of time this year, so I won't be going this Wednesday.

jonny96
Posts: 50
Joined: Mon Mar 14, 2011 8:31 pm
Car: 1995 240sx
1996 240sx SE
Location: Nor Cal

Post

I'm going to be attempting to make my OBII manual swapped 240sx pass smog. The very minimum was done during the swap to make the car work. My buddy who sold me the car said the bell housing is from a 93 dual k, but it seems to have a CPS hole that was blocked off. :gotme

From what I was told the transmission itself is from an SR, but it seems to have all of the appropriate sensors. It did not come with a transmission wiring harness. I believe I'll need a 1995-1998 transmission wiring harness to get the correct connectors. I know the speed sensor connector is different S13 to S14 and I have to run an S14 VSS to work with my S14 speedometer. I'm not sure that the transmission sensors on my SR transmission will plug into an S14 transmission harness. If anybody has any helpful input here, please let me know. I'll probably be doing some sensor part number cross referencing to see what is interchangeable. I plan to use this thread to help me with the wiring auto-to-manual-writeup-5-speed-conversion-t181139.html .

I'm thinking that I'll also have to wire in the clutch safety switch in order to get the car to start with the Manual ECM. I'm hoping that I can use the FSM to figure out which wires I have to tap into on the ECM harness so that I can get the clutch safety switch wired in. If anyone knows of a bypass for this please let me know as I really like starting the car in neutral without the pushing in the clutch. I'm also going to need the CPS sub harness, as mine seems to be missing, or maybe the autos had a different harness. Hopefully it just plugs into an existing connector on the Auto Engine Wiring Harness. Worst case, I have to wire this into the ECU harness as well.

I already have the 1996 manual ECM, CPS, and S14 VSS, so once I have the two harnesses I need it will be time to start the wiring.

I'm definitely going drifting on 7/3. Just purchased my ticket.

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jonny96
Posts: 50
Joined: Mon Mar 14, 2011 8:31 pm
Car: 1995 240sx
1996 240sx SE
Location: Nor Cal

Post

I've been giving some thought to the transmission position sensors. It seems to me that the position sensors not being hooked up should not throw an error code. The car doesn't throw codes when the car goes into or comes out of neutral, 4th or 5th when working properly, so why would no signal throw a code? I'm not sure what the function of these sensors are (maybe 4th & 5th sensors work with the governor ). I think the neutral sensor turns cruise control off, maybe the 4th or 5th position sensor has to be activated for cruise control to work.

If this is true all I really need are the VSS and CPS pigtails (I won't be hooking up cruise control). Can anyone confirm what the position sensors do and whether or not they will cause a CEL when not hooked up?

jonny96
Posts: 50
Joined: Mon Mar 14, 2011 8:31 pm
Car: 1995 240sx
1996 240sx SE
Location: Nor Cal

Post

I put about 15 miles on the car since the new clutch. It feels good so far. It engages firmly and the pedal feels a lot stiffer than before.

The first time I shut the car off somewhere other than home it wouldn't start. I jumped the car and when I got home I started cleaning the terminals and posts and noticed this.

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I knew I needed to replace the positive terminal, but now I have to in order to drive the car at all. It's not a big deal, just another hurdle in the way of getting the clutch broken in before 7/3.

jonny96
Posts: 50
Joined: Mon Mar 14, 2011 8:31 pm
Car: 1995 240sx
1996 240sx SE
Location: Nor Cal

Post

So I found the CPS and VSS connectors with pigtails and it cost me less than $14 shipped. It appears that Wiring Specialties has just about everything you could need to wire up any year 240sx.

I'm thinking that the jumpered neutral safety switch that I have may already make the car start without the clutch pedal depressed with the Manual ECU (I'm thinking the wires from both sensors would occupy the same wires on the ecu harness). If not I'm thinking that jumping the two wires that correspond to the clutch switch would do the trick.

I also purchased a positive battery terminal on ebay. It was cheap, but it looks right. We'll see, even if it's junk I only lost $6.

jonny96
Posts: 50
Joined: Mon Mar 14, 2011 8:31 pm
Car: 1995 240sx
1996 240sx SE
Location: Nor Cal

Post

My connectors came in and they fit on to the sensors perfectly. Thank you Wiring Specialties.

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My terminal came in

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And I was able to install it without any issues.

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It starts no problem now and for the first time the positive terminal feels good and tight. I also put a better terminal on the positive wire to the radiator fan. I've only got about 55 miles on the clutch so far. I'm hoping to get the sensors and MT ECU wired in tomorrow. Hopefully everything goes smooth and I get it back on the road quick.
Last edited by jonny96 on Thu Jul 04, 2013 10:46 pm, edited 2 times in total.

jonny96
Posts: 50
Joined: Mon Mar 14, 2011 8:31 pm
Car: 1995 240sx
1996 240sx SE
Location: Nor Cal

Post

After some research in the FSM and looking at the transmission harness that is on the car I found the speed sensor wires hanging near the back of the transmission and what I'm pretty sure is the CPS sub-harness connector near the front of the transmission. I removed the insulation from 18 gauge butt
connectors that I had and crimped the wires really good. Then I put heat shrink over the connections and taped the wires together all the way up to the transmission harness. Now the speedometer and odometer work!

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Based on the wiring schematics in the FSM the grounds of eight sensors (incl the CPS) are grounded together. Then four of those (incl the CPS) and three other sensors have a third wire that all go to pin 50 on the ECM and pin 35 on what appears to the the transmission harness. This common wire on the
other three sensors appears to be their only ground. The CPS itself and the connector that connect to it only have two wires, but the non sensor side of the CPS sub-harness has a three wire connector on it. I know that one of the three goes to pin 53 on the ECM, one splices into the wires from other
sensors and goes to pin 50 on the ECM and 35 on the Trans harness (might be a ground), and the third goes to a common ground.

I think that the ground wire coming out of the CPS would need to connect to two of the three CPS wires and the other wire coming out of the CPS would need to connect to the which ever of the CPS wires goes to pin 53 (can be tested by checking continuity with pin 53 on the harness). Rather than
cutting off the sub-harness connecter and potentially wiring it wrong I ordered the CPS sub-harness. It was a bit pricey for two connectors and some wire at $65, but I'd rather not risk wiring it up wrong.

While I had it up in the air I adjusted the toe to be slightly more toed in. Back on the ground the minor toe adjustment made the car drive a lot better. It must be very close to zero toe.

I took it to Sonoma Raceway yesterday (7/3) and right off I noticed my electric fans were not working. This is only a minor problem for the track and basically not a problem at all while driving, as long as I'm not sitting in traffic. Fiddling with the wires it seems to be a bad ground.

I got teched and got the car down to the skid pad. On my first run I hit the first corner pretty good and transitioned into the second corner. As I was transitioning into the third corner I could see that I was coming too close to the wall so I tried to straighten out and hit my driver side front wheel on the wall instead of the rear quarter panel. :facepalm: My driver side FLCA snapped in two, but luckily none of the rest of the suspension appears to be damaged. The fender, headlight and corner on that side are all damaged as well and I'm pretty sure I need to do some pulling on the bumper support and core support.

I called my wife and told her where my spare S13 control arms are and had her meet me half way to the track. I got the new control arm on and got five more runs in before heading home (the car was overheating while waiting in line between runs, so I left a little early). I waited until the third corner to initiate so as to avoid hitting the wall. I got some decent drifting in, but with the new arm the alignment feels toed out too far. I feel like the car would have done a lot better on my other runs if I would have had a chance to dial in the toe like I had before snapping the FLCA.

A lot of people hit the wall. One Miata spun around and smashed his rear corner panel up pretty good. A Cressida hit the third corner too wide and caught his rear quarter panel really hard at the end of the wall spinning him around the other way.


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Last edited by jonny96 on Sun Jul 07, 2013 3:32 pm, edited 1 time in total.

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WDRacing
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Ouch!

I swear drifting is going to put every S Chassis is the junk yard. Sok though, just raises the value of mine I guess ;)

jonny96
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Joined: Mon Mar 14, 2011 8:31 pm
Car: 1995 240sx
1996 240sx SE
Location: Nor Cal

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It felt like I almost stopped before I hit the wall. I really didn't think I was going to hit it hard enough to break a suspension part. Maybe the impact didn't feel that bad because most of the force was absorbed by the control arm. It was definitely an "ouch" to my feelings though. I haven't driven it that much since fixing the front end and doing the suspension and I broke both of them. Getting back on the horse so soon after falling off and breaking an arm (a control arm that is) made me feel a lot better. There's a satisfaction in over coming adversity like that.

I've noticed the values of 240s going up over the last few years. More people are buying them creating a greater demand as more people like me drive them into walls reducing the supply.

jonny96
Posts: 50
Joined: Mon Mar 14, 2011 8:31 pm
Car: 1995 240sx
1996 240sx SE
Location: Nor Cal

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Here is a video of that Cressida hitting the wall. It's the third and last run. The first two are worth watching cuz dude ain't too bad, though.

http://youtu.be/1dGoIga5FqE

jonny96
Posts: 50
Joined: Mon Mar 14, 2011 8:31 pm
Car: 1995 240sx
1996 240sx SE
Location: Nor Cal

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I've got the front end back in the air and I've removed the flcas, knuckles and coil overs. I'm trying to get my new steering rack swapped in before I install my new JIC magics and stock flcas and knuckles, but the old high pressure hose doesn't want to release on the old rack. I was going to just pull it out with the high pressure hose and install the aftermarket high pressure hose that came with the new rack. The potential problem with this is that it eliminates the power steering pressure sensor and I can't have any CEL codes. I did a bit of searching and couldn't find anything that answered my question. Which is: Does the sensor being disconnected cause the ECU to throw a code and if so is there a way to jumper the connector to eliminate the code? So, I posted the following:

1996-s14-power-steering-pressure-sensor-t578842.html

If end up needing to use my old line, what is the best way to remove the stuck on fitting? I'm thinking line wrench and torch, but any helpful advice here would be appreciated. I don't need to worry about damaging anything in the rack as it's toast.

I recently ordered what I thought was the CPS sub harness. Turns out I got the knock sensor sub harness. So, I'm back to trying to create my own CPS sub harness. I have the CPS side connector and will be ordering the engine harness side connector soon. The CPS only has two wires and the harness side of the CPS sub harness has three. Based on the FSM it looks like the CPS ground wire must be the one that splits somewhere in the sub harness, which I'm going to be making out of this connector and the CPS connector I purchased previously.

The FSM shows the wire going to the positive terminal in the ECM as the P, which I believe means pink as the connector on the Engine harness that the sub harness goes into has a pink wire coming out of it.

Looking at the CPS sensor connector I have that pink wire matches up to the blue w/green stripe wire on the sensor connector. So I'm thinking that I need to splice the solid blue wire (which is the other wire on the connector) and run that to the wires on the MISCNISS connector that correspond to the two that are not pink on the engine harness side.

Hopefully this all works.....if I only had a 95.

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Venkmen
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Car: 98 S14 Kouki

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WDRacing wrote:Ouch!

I swear drifting is going to put every S Chassis is the junk yard. Sok though, just raises the value of mine I guess ;)
QFT!

That is exactly how I feel!

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f*** cool username dude :yesnod


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