I'm New Here And I have A Simple Question Thread, (No Flaming Allowed)

[troskinatior]

he also said i needed a duel cam cluster cuz the single cam cluster didnt read but when he was driving the rpms and speed read, so why do i need a duel cam cluster?

[PapaSmurf2k3]

There are dots/marks on the sprockets that line up with colored links on the timing chain.

If you are building it from the ground up, this works well, but the moment you turn the engine a revolution, the marks wont line up anymore (the gears and such spin at different rates).

If your lower chain is on, just put the engine to TDC on cylinder #1 (on the compression stroke), and line up your upper chain/sprockets so that the cam lobes look like this:



BTW: 100% of this is covered in the FSM. There is a link in my sig for it.

[fightinchunk]

i found a set of work vs-xx's that i'm thinking of picking up... but the offsets kinda worry me. will 18x8+47 in the front and 18x9+56 in the rears work? i'm afraid they might rub/smash into the strut assy

[PapaSmurf2k3]

dual cam cluster

Well... did the cluster work? If not... then yes, you need a dual cam cluster.

[PapaSmurf2k3]

i found a set of work vs-xx's that i'm thinking of picking up... but the offsets kinda worry me. will 18x8+47 in the front and 18x9+56 in the rears work? i'm afraid they might rub/smash into the strut assy

Holy moses... those might work on a Honda or something, but they will be uber sunken on your 240 unless you run some gigantic wheel spacers. I'd worry about them hitting/rubbing as well.

[TroubleBound]

As long as you have a manifold vacuum/boost source, your wastegate will function at its spring rate. I'm assuming by "wastegate control valve" you mean boost controller... and I didn't know the stock SR came with one, but then again I don't have an SR.

You could just rig up a manual or electric boost controller and call it a day.

I do have a manual boost controller i plan on installing after i start the car but i thought a wastegate did something different than the boost controller..like released excess pressure? Is that what a BOV does? Im so confused )= So should i run these two vacuum lines and just leave the plug unplugged? Or just not hook any of it up at all? If i do hook it up (which isn't hard or a problem) which one of them is vacuum and which one is boost?

[zach-Ka]

zerothread/305170I have left mine un-plugged.Boost controller tells the waste-gate to open and relieve pressure in the exhaust housing so it does not surpass the desired amount of boost. BOV relieves pressure in the IC piping when throttle plate is closed suddenly, so that the air doesn't travel backwards through the piping and smack into the compressor wheel.

[TroubleBound]

zerothread/305170I have left mine un-plugged.Boost controller tells the waste-gate to open and relieve pressure in the exhaust housing so it does not surpass the desired amount of boost. BOV relieves pressure in the IC piping when throttle plate is closed suddenly, so that the air doesn't travel backwards through the piping and smack into the compressor wheel.

Cool Thank You Zach. I was so confused before haha i've never had a turbo (never even seen one before i got mine) i think i finally understand now. And the first time i looked at that pic i didn't realize that the 'boost pressure solenoid' was the same thing. You are the man.

[zach-Ka]

I try man. Good luck...

[PapaSmurf2k3]

Right. The way a wastegate functions is this:Wastegates essentially open a dump or a bypass around the turbine when you reach a specific boost level (that boost level is dictated by the spring in the wastegate). When the wastegate opens, it diverts enough of the exhaust gasses away from the turbo so that it doesn't keep making boost.

Now, if you want to run more boost than your wastegate spring will allow, that's when a boost controller comes in. What it does is alter the amount of pressure in the vacuum line going to the wastegate, so the wastegate doesn't open until later. Note: When running a boost controller, you can run MORE boost than your wastegate spring, but you can never regulate it BELOW the spring rate of the wastegate... meaning: If you have a wastegate that opens at 7psi, you can install a boost controller so that you can run 12psi on the same wastegate, but you CAN NOT install the boost controller and turn it down to 5psi.

[TroubleBound]

Thanks Papasmurf, you've done like half of my swap for me in this thread lol im sorry but i appreciate it. One more question while im at it. If i decide that i don't want to go atmospheric with the BOV, do i hook it into that big hole on the plastic intake? This one (From positron's thread) And i dont want to sound like a ricer, but will that make it not do the pssh noise?Are there any disadvantages to hooking it up?

[PapaSmurf2k3]

Uhh... you're gonna have to zoom out a little bit on that pic.

If you are going to recirculate the BOV valve, then I'm assuming you will be running a suck-through MAF (meaning your MAF won't see any boost, as it will be on the intake side of the turbo... between the turbo and the air filter). If that is the case, then you will need to plumb the blown off air between the MAF and the turbo. Whether your intake is all set up for it already... I have no idea. Is the pipe from your turbo to MAF stock (and plastic)?

Yes, a recirculated BOV is quieter than an atmospheric one.

[Dire91]

So I have a dilemma! I started college this year meaning my car sits around most of the year. I am home for a month starting December 18th but after that the car will sit in a garage for 4 months. I recently just installed new rims and am eager to buy and install coilovers. I was told though letting the car sit on the coilovers is a bad idea and will ruin them. Thoughts?

[TroubleBound]

If you are going to recirculate the BOV valve, then I'm assuming you will be running a suck-through MAF (meaning your MAF won't see any boost, as it will be on the intake side of the turbo... between the turbo and the air filter). If that is the case, then you will need to plumb the blown off air between the MAF and the turbo. Whether your intake is all set up for it already... I have no idea. Is the pipe from your turbo to MAF stock (and plastic)?

Yeah the MAF is between the filter and turbo, and it is on the stock plastic intake. It does have a hole in it already that looks like it would be perfect for the BOV recirculation if i decide to do so, but i suppose if there is no disadvantage to releasing it into the atmosphere, then i will just do that? For less hose and more pssh noise =) Thanks Again.

[zach-Ka]

So I have a dilemma! I started college this year meaning my car sits around most of the year. I am home for a month starting December 18th but after that the car will sit in a garage for 4 months. I recently just installed new rims and am eager to buy and install coilovers. I was told though letting the car sit on the coilovers is a bad idea and will ruin them. Thoughts?

Why would it?Most track cars have coils and they usually sit for the off seasons.

[PapaSmurf2k3]

Yeah the MAF is between the filter and turbo, and it is on the stock plastic intake. It does have a hole in it already that looks like it would be perfect for the BOV recirculation if i decide to do so, but i suppose if there is no disadvantage to releasing it into the atmosphere, then i will just do that? For less hose and more pssh noise =) Thanks Again.

If you vent it to the atmosphere you run the risk of stalling coming out of boost. Blowing off that much metered air could cause such a catastrophic rich condition that it would stall the engine... or shoot a sweet fireball out the exhaust.

[Zeus551]

Hey guys I just joined Nico :] I've been hovering around this site for a couple of months now and most everything I've seen is always very helpful. But I have a question and I'm sure it's been talked about before but I just want an honest answer. I own a '90 240sx with the KA24E single cam in it, but how difficult is the swap to DOHC? Like say the SR20DET. I know the connectors in the wiring don't match up but other than that what can I expect with the swap?

I've also heard that when switching SOHC to DOHC the tach has to be adjusted. Is this true and about how difficult is this?

I have a decent bit of mechanical knowledge but I'm still on the amateur level :]. Any help would be awesome thanks guys look forward to hearing more 240 wisdom

[PapaSmurf2k3]

Welcome to NICO!Unfortunately the SOHC is an entirely different animal from the DOHC. You'll need new wiring and a new ECU... and yes, you'll need a DOHC cluster.

There have been a few writeups on how to do it... a NICO search should turn something up. You should also check out the 240 archives in http://www.240sxtech.com. Many NICO members have compiled lots of data, and how-tos there.

[fightinchunk]

Holy moses... those might work on a Honda or something, but they will be uber sunken on your 240 unless you run some gigantic wheel spacers. I'd worry about them hitting/rubbing as well.

so what offsets should i be looking for on a typical wheels size for an s13(i'm assuming 9 - 10 in the rear is typical). I'm not looking to run overfenders for the time being. is +45 the absolute limit on a 10 inch tire/wheel or is that too high?

[OutToWinPAHC]

You can fit a 17x9+30 to +35 with a 275-40-17 without pulling a fender. If you want a stretched look I would suggest a lower offset, like a +15/+20 with a 235 tire. Check out some of the build threads and see what people are using.

[Heavy]

does anyone know if KA24E and KA24DE "Throttle Position Sensors TPS" are the same?

[PapaSmurf2k3]

does anyone know if KA24E and KA24DE "Throttle Position Sensors TPS" are the same?

Courtesy Parts has them listed as a different part number, but extremely close.http://www.courtesyparts.com/k...cat=1SOHC= 22620-S13004DOHC= 22620-S13006It could be pretty much the same damn thing, with a different wiring connector on it or something. Do you have a junkyard at your disposal you can compare them with?

[Heavy]

no no junkyards around here have 240s, magik dragon gave me a bunch of TPS sensors so im going to try those

[dsm turned nismo]

I read that u can unplug the trans pressure sensor and that will increase line pressure and give me fimer later shifts in my 1996 s14? Anyone able to answer this? It doesn't seem right to me?

[PapaSmurf2k3]

I read that u can unplug the trans pressure sensor and that will increase line pressure and give me fimer later shifts in my 1996 s14? Anyone able to answer this? It doesn't seem right to me?

Eh... that one could go either way. I don't know too much about the 240 autos, but if there is a trans pressure sensor, and you unplugged it, it might actually go the other way and decrease the line pressure. Just try it out and see if it works. If it doesn't, plug it back in and disconnect your battery for 15 minutes to reset the TCM.

[Dire91]

Any opinions on BC coilovers for my S14. My friend got them for his Legacy and said they were great, I haven't found any good articles on them for S14. Like the lowering capability, the damping etc...

[OutToWinPAHC]

I got a buddy who runs when but on a S14. His are the off shock damper type, loved them. They are a quality item. Make sure to check Endura Tech too.

[SpecD_240sx]

Got a question about Greddy e-manage vs apexi safc neo. What would you guys suggest for diy tuning and ease of use. I'm going KA-T so I'm gonna need something of this sort, and these are the options i'm looking at. Any advice helps me out.

Thanks

[PapaSmurf2k3]

I had an emanage, and wasn't really a fan. I still have it if you want it. I'll let it go suuuper cheap. (Emanage blue btw).

[Kas-Z]

Hi. I was just given a 92 240zx by a friend who wasn't able to trade the car in. It still runs, ac works and all, but her brother tore something up driving it last week. It is an auto trany, and the car will not engage any gears. What all would I need to get to switch to a manual, and how much do used manuals run buying from guys off of here? Sorry, I know this is a total noob post, but I was just presented this opportunity a few minutes ago and have to make a decision quickly about if i wanna do it or not.