How much "safe" power can be made with a vr4 crank

[Josho Mate Theurillat]

As title. Would it be safe to have 400kw at the wheels through a vr4 crank?

 

[Cranked]

I have heard of 600hp atw, but I can't say personally. Brisvr4 has been 530ish hp atw, in saying that he has been tinkering further so I wouldn't be surprised if he has more now. So yes it is possible.

 

[bazeng]

I would say yes.

 

[Josho Mate Theurillat]

Yea i have read on mmc.org also that people have ran 600+hp at the wheels on stock cranks but that was "back in the day" and might not have been a wise thing to do. Im only going for about 350kw atw but it would be nice to have the option for 400kw

 

[Cranked]

I would be confident that my motor will go 400hp atw easy on pump. And ethanol 500hp plus. I may chase that, but I have a nice gearbox I would like to develope a good friendship with.....

 

[ENGINR]

Refer the conversation from about post #219 in this thread about how stock parts cope with power outputs higher than stock....

http://www.4gtuner.com/topic/21982-upgraded-evo2-gearbox/page-11

 

[vr401]

Someone must add torque factor here. As we know torque will twist and brake parts before kw.

 

[Josho Mate Theurillat]

I ran a stock kmm31 turbo cyborg gearbox for 6 years with 238kw atw, probably did 2 drag meeting's a year in that time and iv only just broken the selector fork a few months ago. I now how a rebuilt vr4 box with a evo 2 gear set hopefully i have a good run out of this box.