I know there have been a few threads about this in the past, and when i get home tomorrow ill try and search (hard to do anything on this diety-forsaken laptop), but lets try and make this really good...

I talked with 1993TanJ30 on the phone tonite.... Basically what I was sort of running through my head is that I couldnt believe that more people dont mod the crap out of the J30s, theyre cheap, not that much heavier than the Z32 (iirc, J30s weigh like 3800lbs?), and have a huge aftermarket with the VG being used in so many other cars...

So lets think about what could be bolt on and what may not be..

For the veteran members, we all know about the TT J30 that was on ebay about a year or so ago... Unfortunately they didnt complete the package...

I'll have to do some more research, but heres my thinking.. If the VG30 that is in the Z32 has the same engine mounts (as far as P/N and design), my guess is that it will bolt right in.... I dont dig people saying that its impossible because a) the Z32 engine bay isnt any bigger than the J30 and b) we've seen it done...

My guess is also that the MT would work but this would be fairly hard to get it to work right... Unless, the brake pedal shaft is on the right hand side of the steering colum, as opposed to the left like the Q is.... Once you get in there, a clutch MC wouldnt be too hard to mount in there... Again, if it can be done on a Z32, why not on a J30..

We also chatted about the VH41 that was offered, but since they never offered it with a manual that seems counter productive. Stock J30s have like 220hp, the V8 only has 40more HP.... definitely not worth the hassle...

Other than that, as far as bolt ons, i dont see why Z32 N/A headers wont drop right in. Worst case I see is that you have to change certain things, like where the EGR or o2 sensor is. The hard part of the fabrication is done.... Id really like to see someone try it, i bet someone on the Z32 forums has a set of headers really cheap....

We all know a Z32 4.08 should drop right in, i bet that adds some much needed pep to the J30.....

Lets discuss what we could do with j30s

elwesso wrote:Other than that, as far as bolt ons, i dont see why Z32 N/A headers wont drop right in. Worst case I see is that you have to change certain things, like where the EGR or o2 sensor is. The hard part of the fabrication is done.... Id really like to see someone try it, i bet someone on the Z32 forums has a set of headers really cheap....

I recently discussedthis with a performance shop and the guy said its really a gamble with the aftermarket headers. They may or may not fit depending on how wide they stick out.

I have not seen a whole exhaust kit for the J anywhere and everyone says it has to be custom. I dont know if Mayhem J30 or Diamond J30 swapped the headers or simply cut them off and weld back from there. Here are pictures of Mayhem J30s exhaust system.











This is a Z32



A little bit different.

elwesso:

Awesome idea, I'll do whatever I can to contribute to this thread.

I 100% agree with you that the 4.1 isn't a viable motor swap for the HP gain. I think the VG30DETT is the only motor swap worth doing.

Now as far as the 5 speed. I was thinking it over, and converting an AT to a MT is quite the task. Alot more involved than a motor swap. I was wondering which transmissions the 300ZX TT came with? Is it alot stronger than the J30 transmission? I would be interested in picking up a front clip from a 300ZX TT with an automatic transmission if it's alot stronger than the J30's transmission. If its similiar/not much stronger - then I'll look into purchasing a motor seperate.

4.08: I really like the sound of this, because like you said elwesso this would add alot of pep to the J30. Would this be a direct bolt up? Has anyone documented this before?

DominickJ30: That exhaust system doesn't look all that bad. However, the stock piping on the J30's exhuast is by no means small - so I'm not sure what type of gains you'd see from it? Looks similiar in size to the piping pictured. Any idea what the diameter of that piping is? I'm not to fond of any additional exhuast tone either. I'd be going after the whole sleeper setup. I think a loud exhaust tone, would take away from the J30 as a luxury car.

Lets keep this going, and lets get some facts in this thread. I'd like to start modding my J30, and this thread could really help me out.

Thanks for the space!

Dominick, I agree... However, this brings me back to the original point. If they fit in the z32 engine bay why wouldnt they fit in the J30 engine bay..... Id like to measure to verify. However, what I see is if you can get a used set of N/A headers for not much money, then if they dont work you can resell them... If I had a J30, I would have already tried this...

The exhaust mods are mainly done to save weight and sound. The factory exhaust is pretty heavy!

I'm going to have my car on a lift this weekend, I'd be happy to take some measurements, if you can find someone with a 300ZX that'd be willing to do the same - let me know what I need to measure. I can snap pics, and draw in the dimensions or something..?

"The exhaust mods are mainly done to save weight and sound. The factory exhaust is pretty heavy!"

I don't know about the whole exhuast idea - seems like sort of waste of time... Your running two mufflers, instead of one now, and more piping - how much less can it weigh?

Even if it removed, say 50lbs (probably less than that) - it takes 200lbs, to remove roughly .1 sec from the quarter mile - thats generous.

Just seems to me like the $500-$600 your spending on the exhuast can be spent elsewhere, and produce alot better results.

As far as sound - In my opinion an Infiniti should sound like an Infiniti

Eric, let me know what you come up with..... I can ask some Z32 guys to compare...

Its Erick!! JK

Will do, I'll take a whole bunch of measurements this weekend.

Two months ago, I purchased a 1993 J30. The car has high mileage (120k) but was very well maintained due to the fact before I purchased it, it was a one owner. I’m in the process of replacing the entire timing belt kit from Infiniti, the starter, and a complete tune-up. I’m basically going through the car to make it completely solid – replacing anything questionable. In another 2-3 weeks, I’ll be done replacing all the OEM stuff needed and the car will be at 100%. I’d like to then start adding a few performance extras. I’m going to order the following from your website, and I just wanted to get your opinions on it, and add anything I’ve missed: Air intake setupNitrous kit on your website (jetted for 100hp)ECU with nitrous module on your websiteRemote bottle openerBottle warmer Questions: 1) Now first off – what do you think about a stock VG30DE handling a 100 shot, using your ECU? Is that too much? I’ve been a Mitsubishi (4G63) guy for quite a few years, and I was told just like the 4G63 2.0L (I used to feed an 80 direct port setup too) – the VG30DE is a very solid, strong motor. Would a 100HP be pushing the limits? Should I bump it down? Just wondering what you guys have seen on customers cars, running the same motors (J30s, NA 300ZX, etc)? 2) Secondly, is there anything else I need to purchase in addition to the above? I want to be safe, and get the most performance from this setup. 3) Should I look into a fuel pressure safety switch? 4) Any gauges, such as a Wideband O2 sensor or something? Just trying to play it on the safe side – I want to have a little extra on the highway, not blow a motor. 5) Does the N2O module cost extra, or it included in the $600 price for the ECU? 6) I’ve read purge kits are unnecessary – is this true? I could care less about looking “coolâ€? or whatever purging the system – I’m going for a total sleeper. 7) Anything else to add? Thanks very much for your time. Erick E. AdamsEngineered Wood Products DesignerReliable Truss & Components200 Welby Rd.New Bedford, MA 02745(508) 998-7877 Ext: [email protected]

Hi Erick,Below in our price list is the info on the J30 parts we sell. For the N2O set-up, you need to have the following parts:

$595.00 JWT Upgrades your ECU you ship to JWT$450.00 JWT N2O module (this gets installed into the JWT ECU)$637.00 JWT N2O hardware kit (see description below)

You need to convert your factory 259cc injectors into the ones out of the 1990-1994 300zx-tt model which flow 370cc per minute.

Our set-up is a 100 hp to the back of the engine system. If the engine is in good mechanical shape then it is safe to use on your J30.

The following parts are something you can add on your own to the system to enhance safety and performance:

Remote bottle valveN2O bottle pressure gaugeN2O bottle warmerN2O purge kitFuel pressure gauge

The bottle pressure gauge shows the real bottle pressure. Bottle pressure must remain stable and ideally around 950 psi.

The bottle warmer is designed to keep the bottle at a stable temperature which helps to maintain the proper bottle pressure.

The purge kit is used to purge the N2O line up to the solenoid of any air in the system so that liquid N2O is actually ready to spray out the nozzle and not air which would make the engine "bog" from not getting the N2O but fuel only.

The fuel pressure gauge would allow you to monitor the fuel pressure which needs to stay consistently at the factory specs. If fuel pressure drops for any reason while you are using N2O, the fuel mixture might go lean which could be bad on the engine.

Best regards,Ben Pila (Technical and Sales Support)Jim Wolf Technology, Inc.212 Millar AveEl Cajon, CA 92020-4219(619) 442-0680 Mon-Fri 8am-5pm PST(619) 579-8160 24 hour faxhttp://www.jimwolftechnology.com

Thanks for your interest in JWT products. Here is a list of what we have for the 1993-96 J30.

Note: Go to our web site and enter the part # in our products section to get more information.

ECU upgrade $595.00 on an exchange basis (1993-96 at this time only) We remove the top speed limiter, raise the rev limiter to 7,200 rpm and put in the most aggressive fuel map and timing curve for 91+ premium fuel. We also optimize the throttle response code and the cam timing code for better throttle response. Call for current turnaround time. We do offer a core exchange option. The refundable additional core deposit is $500.00. Call us for details.

PJ302-1X0HX Pop-Charger air intake system $159.00 (1993-95)

ECU and Pop-Charger net about a 18 HP gain together.

NZ320-NX236 NOS Control module $450.00 (this unit gets installed inside a JWT upgraded ECU.) This is a 100hp system that makes 100hp above 2,200 rpm and shuts off about 200-300 rpm before the rev limiter automatically.

N6N20-HWARE NOS Hardware kit $637.00 (NOS bottle, bracket, braided hose, spray nozzle, solenoid, relay, wiring and plumbing, instructions.) 370cc injectors are required to be installed for this upgrade. These are stock 90-94 300ZX Twin Turbo factory injectors available from the Nissan dealer.

AZ320-000S1 JWT Cam Set $600.00 for the set, $400.00 core deposit. These are mild regrind cams that get 10-15 HP. These bolt in place of the stock units. These cams only work on the 1993 models.

AZ324-000S1 JWT Cam Set $600.00 for the set, $400.00 core deposit. These are mild regrind cams that get 10-15 HP. These bolt in place of the stock units. These cams only work on the 1994-'95 models.

MCM10-NOMAX CM-100 Engine monitor without max, can show duty cycle, MAF voltage, MPH, H2O in F. $119.00

MCMX1-WMAX0 CMX-100 Engine monitor with max, can show duty cycle, MAF voltage, MPH, H2O in F. $159.00

MISCW-STKR1 JWT Windshield banner available in white only $22.00

MISCL-FRAME JWT license plate frame $4.00

MISCL-PATCH Patch, JWT embroidered, 5" x 2", iron on or sew on $5.00

Note: pricing subject to change after 7/05 without notice, call to confirm all pricing.

Well I priced out everything included in the above e-mail - for a complete 100HP shot of nitrous, and all the toys...

$4600!!!!

Damn, maybe I won't be doing the nitrous kit after all... Gets quite expensive!
Modified by 1993TanJ30 at 11:56 AM 8/4/2005

The engine in a Z32 sits much farther back. The headers are way past the strut housing. On the J30 however the headers in right in the middle of the strut housing.

Skip the NOS and go straight motor.

Unless you go to the tracklike Wes you do not need spray IMO.

DominickJ30 wrote:The engine in a Z32 sits much farther back. The headers are way past the strut housing. On the J30 however the headers in right in the middle of the strut housing.

Notice the location in relation to the strut housing?

I see what your saying Dominick, i didnt ever notice thta much difference... The TBs are about even with the strut towers.....

Looks like I'll have to post some diagrams..... Here goes.....

Z32 manifolds

j30 manifolds

From these pictures it looks like the runners on the J headers are shorter, and dont stick out as much.

Id be curious as to how much different it is in real life... we jusdt have to get some comparison pics...

I'll snap those pictures!! Gladly..

1993TanJ30 wrote:I'll snap those pictures!! Gladly..

Heres a few pics i found on ebay.....

J30

Z32

They do look a bit different. I didn't get my parts in time to do my timing belt this weekend - ordered last Friday, still not here!!!

So I didn't have the car on a lift, and couldn't snap any pictures. I'll let you know when I do snap some though.

300ZX Complete Swap Package:

http://www.jspecautosports.com...id=49

Only $1800 - it's so cheap, I wish there was more info about doing this swap... I would purchase one of these quickly if I knew it'd work out ok!

Obvioudly, custom exhuast, etc. But I wouldn't have a clue where to start as far as the electrical work.

Someone who has experience with 300ZX/VG30DETT should help me out - I'd love to do this swap!

Dang and that comes with everything you need, tranny and everything...... wow!

ELWESSO:

I know, use your vast NICO resources and hook me up with a guy who has a 300ZX in the New England area!

Or at least someone I can direct questions too!

Honestly, I'd pickup that kit for $1900, and sell off the 5 speed transmission. Probably grab minimum $300 for the tranny - so it'd only cost me $1600 - thats CHEAP!!!

The whole auto ---> 5 speed swap is quite a bit of work in any car.

Help me find someone to guide me through this, and I'll order some stuff right up!

Looks like $2500, would cover the cost of the swap when it's all said and done - thats cheap in my opinion for the TT J30!

well, as long as we are discussing how to get more power out of the J, have anyone done a electric fan mod, i did that in my Z31 turbo, didn't seem to make it over heat more. What do you guys think?Also what about custom ground straps using some 8 or 10 awg wires. From people that have done it on other car, the benefits would be smoother idle and acceleration.

I'm not sure about the electric fan. I do know the fan thats in the J30 stock is a BEAST, and pushes some serious air. Are you suggesting to replace this, with a regular electric radiator fan?

As far as the ground straps - I'm not too famaliar with this either, anyone have anymoe info?

Thanks!

Correct me if Im wrong ..But I thought he meant a fan forcing air into the plenum / Sudo turbo thang' ..

1993TanJ30 wrote:ELWESSO:

I know, use your vast NICO resources and hook me up with a guy who has a 300ZX in the New England area!

Or at least someone I can direct questions too!

Honestly, I'd pickup that kit for $1900, and sell off the 5 speed transmission. Probably grab minimum $300 for the tranny - so it'd only cost me $1600 - thats CHEAP!!!

The whole auto ---> 5 speed swap is quite a bit of work in any car.

Help me find someone to guide me through this, and I'll order some stuff right up!

Looks like $2500, would cover the cost of the swap when it's all said and done - thats cheap in my opinion for the TT J30!

I say call up Slim.. his number is 678 698 7426

Hes the dude who did the VH in the 300ZX, tell him you know Wes...

yodawill2000 wrote:Correct me if Im wrong ..But I thought he meant a fan forcing air into the plenum / Sudo turbo thang' ..

No, i really mean a electic fan to replace the stock fan. W/something like this http://store.summitracing.com/...earcha pic of a E-fan set up on my old VG30ET

Here is more info about the engine groundinghttp://www.twinturbo.net/net/v...ndinghttp://w ... ttech.html

Those articles about grounding are interesting... Good read!

Does anyone know the CFM of the stock fan? The thing is pretty large, and seems to push some serious air around the engine bay.

Someone chime in about the TT motor swap please!

Did you call slim yet?

Nope didn't call him yet. I was hoping to find someone who actually dropped the TT motor in. But he probably will have alot of input either way. I'll give him a call tonight, and see what he thinks about the whole thing...

So he dropped the 4.1L V8 in a J30 right?

Thanks.