VQ37HR block limitations?

edeeZee · 09-02-2009, 12:34 AM

Some of the sponsors/vendors on this site, not to vilify them, don't give a sh&t if you get a TT set up from them, and shortly thereafter you blow the motor despite them tuning it to "safe" levels of boost. They're here to make money.

They say 500hp is "safe." These vendors are gonna tell you anything you wanna hear. I honestly don't think 500hp streetable is realistic, more like 400hp. C'mon, a VQ motor is a corporate motor in a truck, passenger car, minivan and whatever Nissan makes. On the other hand, a Ferrari motor is engineered to take 12:1 compression ratio, use certain alloys for its block, etc. to get their motors to pump out 500hp all motor, they're high-performance motors per se whereas VQ's aren't.

But the caveat is that you know that building your motor aftermarket is risky despite anything vendors say is "safe."

Orphan · 09-02-2009, 01:14 AM

I think that is a good point that you can't trust vendors to give the most accurate information. From all the pictures i've seen the VQ37 is quite a bit beefier than the VQ35 which seemed to be good to around 400-450hp before breaking stuff. If you just bought a brand new G37/370z are you really going to risk loosing an engine over 50hp or take it a bit easier and be safe.

FYI the VQ30DET is good for 500rwhp standard but that was an engine engineered for forced induction from factory. As there isn't much actual experience with the VQ37 yet I'd assume the safe limit is in the 400-500whp range.

KingDavid · 09-02-2009, 04:50 PM

Quote:

Originally Posted by edeeZee

Some of the sponsors/vendors on this site, not to vilify them, don't give a sh&t if you get a TT set up from them, and shortly thereafter you blow the motor despite them tuning it to "safe" levels of boost. They're here to make money.

They say 500hp is "safe." These vendors are gonna tell you anything you wanna hear. I honestly don't think 500hp streetable is realistic, more like 400hp. C'mon, a VQ motor is a corporate motor in a truck, passenger car, minivan and whatever Nissan makes. On the other hand, a Ferrari motor is engineered to take 12:1 compression ratio, use certain alloys for its block, etc. to get their motors to pump out 500hp all motor, they're high-performance motors per se whereas VQ's aren't.

But the caveat is that you know that building your motor aftermarket is risky despite anything vendors say is "safe."

Not exactly the vendors. It's the company that makes the kit themselves. GTM has said that 550whp is just where you want to be safe with this block.

I don't know why I said vendors. Pardon the stupidity.

Quote:

Originally Posted by Orphan

I think that is a good point that you can't trust vendors to give the most accurate information. From all the pictures i've seen the VQ37 is quite a bit beefier than the VQ35 which seemed to be good to around 400-450hp before breaking stuff. If you just bought a brand new G37/370z are you really going to risk loosing an engine over 50hp or take it a bit easier and be safe.

FYI the VQ30DET is good for 500rwhp standard but that was an engine engineered for forced induction from factory. As there isn't much actual experience with the VQ37 yet I'd assume the safe limit is in the 400-500whp range.

**** if it were me, I'd do full bolt-ons, tune, and a 100shot.

NIZMOZ · 09-04-2009, 07:26 AM

Quote:

Originally Posted by edeeZee

Some of the sponsors/vendors on this site, not to vilify them, don't give a sh&t if you get a TT set up from them, and shortly thereafter you blow the motor despite them tuning it to "safe" levels of boost. They're here to make money.

They say 500hp is "safe." These vendors are gonna tell you anything you wanna hear. I honestly don't think 500hp streetable is realistic, more like 400hp. C'mon, a VQ motor is a corporate motor in a truck, passenger car, minivan and whatever Nissan makes. On the other hand, a Ferrari motor is engineered to take 12:1 compression ratio, use certain alloys for its block, etc. to get their motors to pump out 500hp all motor, they're high-performance motors per se whereas VQ's aren't.

But the caveat is that you know that building your motor aftermarket is risky despite anything vendors say is "safe."

The HR was designed after the GT-R motor with some of the same internals. The HR does handle boost just fine. If the VQ35DE can handle 400 safe, the HR can easily handle that safely. 450-500 I would say is the safe zone for any HR powered car, 3.5 and 3.7.

The other cars in Nissan's line up are not the same engine, yes they are a VQ, but they are completely different.

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09-02-2009, 12:34 AM	#1 (permalink)
edeeZee Track Member Join Date: May 2009 Location: s. cali, los angeles Posts: 627 Drives: 09 370z plat 6 speed Rep Power: 266	Some of the sponsors/vendors on this site, not to vilify them, don't give a sh&t if you get a TT set up from them, and shortly thereafter you blow the motor despite them tuning it to "safe" levels of boost. They're here to make money. They say 500hp is "safe." These vendors are gonna tell you anything you wanna hear. I honestly don't think 500hp streetable is realistic, more like 400hp. C'mon, a VQ motor is a corporate motor in a truck, passenger car, minivan and whatever Nissan makes. On the other hand, a Ferrari motor is engineered to take 12:1 compression ratio, use certain alloys for its block, etc. to get their motors to pump out 500hp all motor, they're high-performance motors per se whereas VQ's aren't. But the caveat is that you know that building your motor aftermarket is risky despite anything vendors say is "safe."

09-02-2009, 01:14 AM	#2 (permalink)
Orphan Base Member Join Date: Aug 2009 Location: Brisbane Posts: 13 Drives: SC400 Rep Power: 16	I think that is a good point that you can't trust vendors to give the most accurate information. From all the pictures i've seen the VQ37 is quite a bit beefier than the VQ35 which seemed to be good to around 400-450hp before breaking stuff. If you just bought a brand new G37/370z are you really going to risk loosing an engine over 50hp or take it a bit easier and be safe. FYI the VQ30DET is good for 500rwhp standard but that was an engine engineered for forced induction from factory. As there isn't much actual experience with the VQ37 yet I'd assume the safe limit is in the 400-500whp range.