Okay I was just wondering if I got the block off a vq40 and put it in my car will that give me more power?

 

Yes, but it isn't exactly that simple...you would need to buy the engine, then pour thousands of dollars into install, testing (this would be a test bed car, I have never seen this motorswap done) and you wouldn't gain an insane amount of power. Better to wait for a stroker kit to be avilable or buy a twin-turbo kit.

 

Well the engine isnt out but I know a friend that works at a Nissan dealer parts deparment. So I can get the parts from him at good price I guess. Do you happen to know how much hp this will give 15 maybe and better tq and lower end?

 

it would definitely increase torque but you will likely lose lots of hp up top, that is more of a truck motor made for lowend

 

You have to check and see if the dimensions are the same, that's the biggest determining factor IMO. Typically truck engines have really huge oil pans, like the VK56 in the Titan. I wouldn't be suprised if the oil pan is much larger or even if the block is longer. They make 3.8L stroker kits for the Z, or better yet a TT/SC kit would do a lot more for probably the same price.

 

the AEBS Stroker Kit displaces the VQ out to 4.3L - much larger than you would be going the other route... plus the possiblities w/ the stroker kit are endless - N/A monster w/ 11.5:1 or Turbo monster w/ 8.5:1 w/ TT @10+lbs of boost

 

Sounds good but I think I might go for the VQ 40

 

you should go with the stroker kit...VQ40=waste of money

 

damn, girl, you are hung up on that vq 40, huh? what gives?

 

Almost every post duckyzgirl has posted has been about swapping the engine...WHY DO YOU HATE THIS ENGINE SO MUCH!!!!????

 

I dont hate it I love it alot but I rather have the VQ40 parts its more efficient and more power at lower.

 

FYI - The VQ40 is a VQ35 stroked from the factory.

Think about that one why don't ya!

<This comes from Nissan btw>

 

is there any real data on this motor yet, or is DuckyZ just assuming that because it's 0.5L bigger it will be a huge night and day difference.. ?

 

You know what you "could" do Ducky... Drop an LS1 Chevy engine in and work it up. If you are that interested in doing a motor swap fo rthe power, an LS1 would be better then any VQ motor.

Will it fit? Dunno, will find out soon though. I met a guy that has done a 240zx engine swap to an LS1. Gonna be going over with a tape measure and take a look at a few things.

 

before ordering anything get the schematics. Are the motor mounts even in the same place? Will the Z heads bolt up? If so, what is the deck height of the heads on the VQ40 vs the Z's VQ35. What is the top dimenrion (dish) of the VQ40 piston?

Its not always as easy as swapping one block for another....you are going to be affecting (possibly) LOTS of other variables. I would not be even considering such a swap till you have the answers to all the questions above, and then some.

 

Dont like that idea at all.

 

I will ask my friend about that when the engine comes out in September when it comes out.

 

As soon as I can get my hands on the VQ40 I will be doing this swap into my Maxima.

If the VQ40 is a truck motor then so is the VQ35. The Pathfinder ,as far as I know, uses the same oil capacity as the other vehicles. Nissan typically does not offer vehicles with large oil capacities.

The VQ40 won't be just a stroked version of the VQ35, there has to be an equivilent bore increase to make it all work with the standard block height. Otherwise the rod ratios would be so bad that the engine wouldn't last 50k miles. And even if the VQ40 has a taller block height there is still no reason that it woudn't fit. The difference wouldn't be that much (10mm max).

The hp of the VQ40 should only be limited by the amount of air you can flow through the stock VQ35 heads and runners. The stroke of this engine will still be less than many other high revving engines (The Ford modular 4.6, Honda S2000 2.2).

Adding this 0.5 liters may add more than you think. The Maxima got a huge boost in usable power and torque when the VQ30DE was replaced witht he VQ35DE.


The AEBS 4.3 liter engine you all speak of is the smaller bore version for FI. The NA version is really 4.4 liters, not 4.3. And it's 90mm stroke is likely to be longer than what the VQ40 will have.