VQ30 VQ35 engine swap

[prizzack2004]

i want to build an engine for my 2k max and i was wondering if i can put the VQ35 from a newer max in place of the VQ30 that is in there now

[AnglerfisH]

It can be done, you would need all the equipment the VQ35 needs, such as wiring harness, ecu etc. thats all I can tell you about that swap.

[vq35de]

why don't you investigate a VQ35 short block with VQ30 heads. Another guy around http://www.that dead forum did this. I don't know if he succeded or not. then you get the displacement increase but get to keep all the emissions and throttle control stuff.

[VQ35DEEP]

why don't you investigate a VQ35 short block with VQ30 heads. Another guy around http://www.that dead forum did this. I don't know if he succeded or not. then you get the displacement increase but get to keep all the emissions and throttle control stuff.

very do-able. but if you stuff in a 35 block might as well go all the way:)

-boostwhore.

[slimer]

the 3.5 crank will fit into the 3.0 block. it will essentially create a stroker kit.

[slizan99]

i'd say get the crankshaft and connecting rods from the VQ35 and make a stroker like slimer said.

[bbmbrown]

im going to stroke my vq30det, will i need to change the pistons if i use the vq35 crank?

[slizan99]

the VQ35 crankshaft and connecting rods bolt up to the VQ30DE pistons, so the VQ30DET shouldn't be a problem.

[XtremeHKS]

the VQ35 crankshaft and connecting rods bolt up to the VQ30DE pistons, so the VQ30DET shouldn't be a problem.

However doing this raises compression 1.5 points, maybe thats only if you put a VQ30 head on a VQ35, oh well I forgot but your compression will be 10:1 after you do that if im thinking right.

[A5295]

10:1 on what, the 30, or 35?

[cullenj76]

VQ35 Crankshaft, VQ35 Rods and VQ30 Piston Head all bolt right up into the VQ30 block with no problems.

This results in 3316cc or 3.3 liters of displacement

resulting compression is 11:1

[turbo6]

A vq35 will fit down the motor mounts and even old alternator will bolt up, but as mentioned you would need to do wiring harness and ecu. This presents a big problem - ecu. As of right now I don't think anyone has cracked the key immobilizer, so you would need the ignition and key too - not real fun. Your way around that is standalone, but that isn't easy either with the VQ's technology and VVT etc - ask autronic. A TecIII could do it, but not super cheap and still not anything NEAR plug and play haha

[audtatious]

The immobilizer is defiantely a problem. With the $$ spent converting a VQ30 to a stroker, wouldn't it be a better investment to simply add a turbo or SC to the existing motor? Of course, if the existing is trashed and you have to replace it anyway.....

[cullenj76]

The immobilizer is defiantely a problem. With the $$ spent converting a VQ30 to a stroker, wouldn't it be a better investment to simply add a turbo or SC to the existing motor? Of course, if the existing is trashed and you have to replace it anyway.....

The stroker motor would be for NA puposes only....unless you have lots of balls and boost that compression queen(cough,cough Hal)

[audtatious]

Yeah, but can't you somewhat lower the compression by utilizing a thicker head gasket?

That's the one thing I don't understand. Why would anyone want to waste their time on making the stroker motor if you are limited in what you can do to it due to higher compression. The increase in HP over the stock is limited when you look at the options available via SC or TC.

[cullenj76]

Yeah, but can't you somewhat lower the compression by utilizing a thicker head gasket?

That's the one thing I don't understand. Why would anyone want to waste their time on making the stroker motor if you are limited in what you can do to it due to higher compression. The increase in HP over the stock is limited when you look at the options available via SC or TC.

Well, to lower the compression enough to matter it would take more than head gaskets.

Like I said it would be for NA purposes only IMHO. The only way I would do it, is if I was trying to make the fastest all motor 4th gen.

I'd rather have your VQ35 Matt

[audtatious]

I'll sell it to ya at payoff

[cullenj76]

I was talking about your motor in my car. hehe

[audtatious]

I'd sell ya that for the cars payoff as well

[turbo6]

There is a VQ43 stroker kit ... comes in 8.5:1 , 11:1, 11.5:1

I would obviously choose: 8.5:1 and boost the heck outta it!

Picture this. VQ43 w/ T88 @ 33psi

[SR20DEN]

It would be a waste of time and effort to use the inferior VQ30 heads on a VQ35. If you're going to do it you should do the whole thing to get all of the power.

The AEBS kit is 4.4 liters (4369cc) in NA form, 4.3 liters for FI.

I have some pretty extensive posts on maxima.org about comparisions of these engines. Too bad their search doens't work.

http://forums.maxima.org/showthread.php?p=3023704

[audtatious]

Hey, SR. Glad to see you on NICO! Welcome aboard!

[Fezzik]

On the key immobilizer problem. You can install the ecu into the car and then tow the car to nissan and have them make a key for the immobilizer with the chip using the consult. Would this not work?

[Chingon]

VQ35 Crankshaft, VQ35 Rods and VQ30 Piston Head all bolt right up into the VQ30 block with no problems.

This results in 3316cc or 3.3 liters of displacement

resulting compression is 11:1

what's the resulting stroke?

How different are the vq30de from the later k variants? just the vvt or something else to pull those extra 20+ ponies?