JClaw

iTrader: (17)

Yeah, along with an inflated ego.

vsamoylov

[QUOTE=Tatanko]Yes, I know the two ECU's are completely different. However, I can't see how a Pathfinder ECU would be any better, and probably not cheaper, either.

i didnt say it was better. i just said the inputs and outputs are different.

SR20DEN

iTrader: (7)

Problem Solved on my end.




Carry on.

TILLEYS99

iTrader: (4)

well that will do it

Tatanko

iTrader: (34)

Alrighty...

japmaxSE

iTrader: (7)

Earlier you guys were talking about having 3.5 IM on 3.0 heads or I could be wrong, has anyone figured out how to do this without using the TB of the 3.5 or vise versa I've been messing with it and I can't seem to get by the IAC if using the 3.0 TB. But I heard you guys say something about using an alternate sensor. >>>>>?????????

krismax

iTrader: (15)

3>5 IM on 3.0 heads wont work without good machine shop being hired

Tatanko

iTrader: (34)

Yeah, you're probably better off with the MEVI or DEK manifold.

BluFlame

iTrader: (2)

tilley how much will it cost to do most basic 3.5/3.0 hybrid? i will pay for the used 3.5 motor.

JClaw

iTrader: (17)

http://forums.maxima.org/showthread....hreadid=185250

>>...I've only heard of 1 person that has done this swap and still don't know who it was...or has he given up as i've heard too. i have the ecu and wires but no tranny and axle...my 5 speed tranny won't mate to this 3.5, but i'm not sure of the axle. do u kno if the axle i have now will work with this 3.5?<<

Make of this whatever you want. Tilley saying the tranny mates, and this one contradicting...

japmaxSE

iTrader: (7)

I'm sorry but I don't quite understand what you mean by removing the dowel to larger ones.
Could you explane in a little more detail on how to do this.

TILLEYS99

iTrader: (4)

My price with motor and whatever gaskets you need is 2k which includes motor, headgaskets, my time to put motor together, and removed old and install new.

TILLEYS99

iTrader: (4)

Im not saying it does, IT DOES and alot of org people saw it. take into consideration the guy on that post only had 45 posts total and you know how those newbies are.

japmaxSE

iTrader: (7)

Oh Sh#T I figured it out, you have to pull the pin out from the 3.0 with cam gear and put it on the 3.5 cam, same with exhaust side but the bolt holds the cam gear together. correct me if I'm wrong.

Oh and what kind of gains am I looking at with this setup?

Compression?
HP?
TQ?

My setup similar to Tillys
3.5 block
3.0 Heads
3.5 Cams
CAI
Full Race Exhaust 2.5" W/ YPipe

TILLEYS99

iTrader: (4)

3.5 block with 3.0 heads is right around 11.5to1

SR20DEN

iTrader: (7)

You shouldn't need to do anything to the exhaust cams. You just insert the 6mm dowel in the VQ35 cam and remove the smaller dowel and it's ready to go. But again why bother putting the more restrictive VQ30 heads & intake manifold on that bottom end?

TILLEYS99

iTrader: (4)

well at least japmax isnt BSing i just got off the phone with him and he is actually going through with the swap. Also he is hooking me up with the 3.5 heads for my boosted 3.0 seup 3.0 w/3.5 heads= low compression

JClaw

iTrader: (17)

I was about to point that out for a forced induction setup but I guess it was on everybody's mind. The upper end will also flow better when you're pushing real hardcore hp. Then again, might as well swap the entire 3.5. Someone I know has a turbo 350z pushing 600hp and the only weak link is the tranny... no more third gear.

I know, I know. But it seems everytime I think I've looked at every possible issue, the halfway-insane mechanical freak's worst enemy shows up; doubt. Now the only thing between me and this swap is about 2500$ (taking into account I've already go 1500), since I'm changing the entire exhaust system at the same time.

StrikerHA

so tilly will you be doing a writeup of this project? not saying u shud, but it would be cool, losa work, but still cool, cmonnnn. or if not could we get a detailed parts list so us DIY can mess around without wasting too much money? btw excellent work and props for pulling it off.

IceY2K1

iTrader: (3)

Tilley - A VQ30+VQ35 heads sounds great, however they bumped the VQ35 compression from 10:1 to 10.3:1 to help low tumble flow and inefficient combustion from the high angle port late generation VQ35 heads. This will be offset some by the smaller diameter VQ30 cylinders speeding up combustion speed, however dropping CR even lower due to the larger VQ35 head combustion area could cause issues.

Please try though.

TILLEYS99

iTrader: (4)

I got 2 3.0 sitting here waiting for testing, not inc the one in my car. Soon time to seriously test thing out.

JClaw

iTrader: (17)

Are you going to get the 3.5 upper end to complete the swap or are you sticking with the mevi?

TILLEYS99

iTrader: (4)

probably 3.5 upper since i have no need for idle control. Then i just need to mod the q45 tb to fit it.

JClaw

iTrader: (17)

Yeah and the lower compression. If you turbo or SC it eventually it will be absolutely sick. BTW, on that 13.87 run, were your 16" heavy?

TILLEYS99

iTrader: (4)

they were 16" S14 240sx wheels, not too heavy

MaxSpeedSE

iTrader: (3)

Quick question. Would one have to look only for the maxima 3.5 or would the one out of the altima work too? are there any differences...mounts exedra?

JClaw

iTrader: (17)

I think the only difference is the exhaust... intake too I think. But the HP ratings (240hp, 246lbs-tq. and 255hp, 246lbs-tq.) are closer to one another than Nissan wants you to believe.

TILLEYS99

iTrader: (4)

murano ??? not sure on this one but car-part.com has it listed as working
altima
maxima

Tatanko

iTrader: (34)

The Murano might work...the VQ35 is transversely mounted in the Murano's engine bay.

TILLEYS99

iTrader: (4)

So is anyone else gonna do this? I have a shop and will do it all at a decent price.

JClaw

iTrader: (17)

I'm going for full swap and will check beforehand if crank lightening is worth it/how much, ect.

THT

iTrader: (8)

Tilley, did you ever dyno this beast after the 3.5 transplant?

~THT

TILLEYS99

iTrader: (4)

I did on a AWD mustangdyna before I put a VI on. #s were poor compared too before, but thats cause it was a dynojet before. Going to a dynojet on tuesday though.

TILLEYS99

iTrader: (4)

http://forums.maxima.org/showthread.php?t=359711

man_mk

i I'm new here, but I have one simple question: since the differences between the VQ30 and VQ35 are bore and stroke, everything else is the same in the engine bottom, would be easier to take everything out of the 3.5L bottom (pistons, pulleys, crankshaft), drill the block of 3.0L engine, and then put those 3.5L things into the drilled VQ30 block?????
I have the european maxima '99 wich looks like I30 with autotranny, and LPG sytem (drives on gasoline and LPG fuel). I want to get some extra hp from it so Ithought it would be the easiest way to do so....

Tatanko

iTrader: (34)

Not really, because you'd already have the VQ35 block. However I don't think anyone has swapped a VQ35 and tried to make an LPG system work with it, so you'd be the first.

man_mk

LPG would not be a problem, in Poland it's very common to run all gasoline engines on LPG, and they run well- it's a separate part. Mine VQ30DE works great on both fuels- but the LPG it's much chceaper, the system consist of four lpg injectors, computer, and lpg tank. The system was not done by nissan of course, it was added.
Ok so I'm going to buy VQ35 and use the bottom of it along with my VQ30 hads. Can you(or someone else) can list all the things needed to do it?
Will it work fine with my auto tranny??? Will the auto tranny stand the greater hp and torque? Please help me eith that. No one has ever done such a swap in Poland before, so I will be the first.
Wouldn't be easier to put the whole vq35 and use all the staff left from vq30 like alternator, ac comp, power steering pump and of course ecu.
Martin mkalisz@sgh.waw.pl

Tatanko

iTrader: (34)

I couldn't give you a full parts list. But I know you'll want the VQ30 timing equipment also.

Yes, the auto tranny should hold up fine. I believe it's the same tranny as the one run on the VQ35 actually. I'm pretty sure they're the same tranny, just bolted to different engines.

DAVE Sz

iTrader: (2)

Chances are the trans won't really hold. It hasn't been proven that it will fail but most if not all 3.5 swaps are a 5spd or soon will be.

Tatanko

iTrader: (34)

Then I think he should be the first to try it. I don't see why the auto tranny would fail. Is the one that's normally bolted to a 3.5 that much more beefed up?