Stroker kits for VQ37 engine

BGTV8 · 05-17-2011, 01:42 AM

Does anyone on the forum have experience with stroker kits for the VQ engine.

I have seen 92mm cranks on offer which when paired with 96mm pistons will give 4.0 litres.

Sleeve kits are also reputed to permit 100mm bore, but I'm not so sure I want to go that extreme given that my plot is for a NA race engine at 450+ flywheel HP (must be NA given the race series rules being contemplated).

Anyone gone this route on a NA engine ??

RB

Jamaica · 05-17-2011, 01:45 AM

i believe you will be the first.

BGTV8 · 05-17-2011, 03:32 AM

Not what I wanted to hear .... being a test pilot is sooo expensive.

I have found the engine builder who blds the Nissan 370Z GT4 engines for the European GT4 series, but the real knowledge is about headwork, piston pin height and crown design, rod length and obviously stroke ...

Oh well, I feel anther project coming on ...

1slow370 · 05-17-2011, 05:08 AM

gtm makes stroker kits for the 370z give sam a call and see what kind of stokes and pokes he can give you. they have a lot of parts coming yet that may be beneficial to you to.

kellyefields · 05-17-2011, 06:09 AM

from my understanding stroking the engine will increase the displacement but unless you can find a way of keeping the compression high it does not gain you anything on a N/A build.

1slow370 · 05-17-2011, 06:51 AM

I believe GTM has their pistons custom madeby Arias so i would GIVE SAM A CALL and see what he can do for you. It may or may not be possible to get 12.5:1 pistons made for a stroker without sleeves but if you never ask you'll never know.

05-17-2011, 01:42 AM	#1 (permalink)
BGTV8 A True Z Fanatic Join Date: Dec 2009 Location: 03350 Australia Posts: 1,515 Drives: 09 Nissan 370Z M6 Rep Power: 39974	Stroker kits for VQ37 engine Does anyone on the forum have experience with stroker kits for the VQ engine. I have seen 92mm cranks on offer which when paired with 96mm pistons will give 4.0 litres. Sleeve kits are also reputed to permit 100mm bore, but I'm not so sure I want to go that extreme given that my plot is for a NA race engine at 450+ flywheel HP (must be NA given the race series rules being contemplated). Anyone gone this route on a NA engine ?? RB

05-17-2011, 05:08 AM	#4 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7251	gtm makes stroker kits for the 370z give sam a call and see what kind of stokes and pokes he can give you. they have a lot of parts coming yet that may be beneficial to you to. __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

05-17-2011, 06:09 AM	#5 (permalink)
kellyefields A True Z Fanatic Join Date: Nov 2010 Location: Lexington Ky #BBN Age: 48 Posts: 1,156 Drives: Supercharged Rep Power: 17	from my understanding stroking the engine will increase the displacement but unless you can find a way of keeping the compression high it does not gain you anything on a N/A build. __________________ MY 2009 SC BUILD.

05-17-2011, 06:51 AM	#6 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7251	I believe GTM has their pistons custom madeby Arias so i would GIVE SAM A CALL and see what he can do for you. It may or may not be possible to get 12.5:1 pistons made for a stroker without sleeves but if you never ask you'll never know. __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

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05-17-2011, 01:45 AM	#2 (permalink)
Jamaica A True Z Fanatic Join Date: Mar 2010 Location: SoCal Posts: 15,362 Drives: Under boost Rep Power: 74	i believe you will be the first.

05-17-2011, 03:32 AM	#3 (permalink)
BGTV8 A True Z Fanatic Join Date: Dec 2009 Location: 03350 Australia Posts: 1,515 Drives: 09 Nissan 370Z M6 Rep Power: 39974	Not what I wanted to hear .... being a test pilot is sooo expensive. I have found the engine builder who blds the Nissan 370Z GT4 engines for the European GT4 series, but the real knowledge is about headwork, piston pin height and crown design, rod length and obviously stroke ... Oh well, I feel anther project coming on ...