VQ built for boost. ???? 3.5/4.0???

[TTZ33]

Ok, I am in the middle of a VQ35 build for boost. A friend is telling me that Ican use the crank out of a VQ4.0 to make a stroker. Is this true and if so will the block from the 4.0 bolt up to any of the 3.5 components? This is not going in the current build, but I have two other long blocks to play with so I am intrigued. I haven't had the time to research any specks of the 4.0 yet so don't beat up on me to much. I welcome all advice both good or just funny. Hope to here something soon.

[evildky]

nt sure ont he VQ parts swappage but the old L series swapped over, and the BG's mostly swapped over although there were a couple of mani bearing diamerts and different crank snout lengths, bothgin that can't be worked aroudn wiht the right parts selection bt why nto jsut start wiht the vq 4.0? then get custom pistons made for it?

[JETPILOT]

Ok, I am in the middle of a VQ35 build for boost. A friend is telling me that Ican use the crank out of a VQ4.0 to make a stroker. Is this true and if so will the block from the 4.0 bolt up to any of the 3.5 components? This is not going in the current build, but I have two other long blocks to play with so I am intrigued. I haven't had the time to research any specks of the 4.0 yet so don't beat up on me to much. I welcome all advice both good or just funny. Hope to here something soon.

Do you know the purpose of a stroker motor? I'm seriously asking. I don't know your automotive backround. Stroker motors seem to be very popular with those with means to do it. But why would you want to.

A stroker motor is designed to increase tourque and displacment which is a good NA trick. Bolting on a turbo kit will get you more tourque than you could ever use. Just raising the boost effectively increases the displacement of the motor.

Why add cost to your build when there isn't a reason to do so.

Check out the torque being produced by my car with the Greddy TT kit. It's 520 ft.lbs of wheel torque or about 600 ft.lbs of torque at the flywheel. I can barely put that torque to the ground even when using my road race semi slicks. Ask yourself if you need more than that.


Modified by JETPILOT at 2:45 AM 5/9/2009

[spitalul2bad]

Doesn't the crank need to be balanced? In that case, swapping one for one won't cut it. Also, you'll get the pistons from... where? And balance them?

[JETPILOT]

Anybody building a motor the right way, stroked or not, would have the crank and pistons balanced. Custom pistons could be sourced easilly from any of the manufacturers.

The VQ40 motor crank will not drop directly into a VQ35 block. The VQ40 has a different block deck height. The VQ40 motor is a truck motor (Xterra, Pathfinder, Frontier) and wouldn't be well suited to a performance application with the curent cams and intake. The VQ40 block also won't bolt into a Z/G chasis as the mounting points and transmission won't bolt up.

Sounds like a real headache to me.

Modified by JETPILOT at 2:43 AM 5/9/2009
Modified by JETPILOT at 2:44 AM 5/9/2009

[evildky]

are the VQ40 heads unique to the 4.0? I was thinking 4.0 block with stock heads, custom pistons can take car of any issue caused by th eextra deck height, maybe evne custom rods to lower the pin heights and reduce rod speed and give a better rod angle so that it doesn't become a slow reving torque monger

engien mounts are easy enough to fab, if someone can handle building a custom stroker I'd think they can handle fabbing up a couple of mounts

but then I wouldn' expect tem to be asking questions either

the trans is a bit of an issue, I'm suprised to hear not all VQ's share abellhousing, an adapter can be machined btu runout needs to be perfect of you tank the bearing like all the VH s13 swaps

[TTZ33]

Thanks for all the advice. I don't really have a need to do this. Just checking to see if its feasible. When you hear of something that is a little strange it never hurts to check it out. I already have a greddy TT kit so I'm not desperate for torque or power, just checking to see If the guy who told me about this is full of $h1}.