[worpdrive]

can anybody tell me the max safe bhp you can run on a std crank R34 GTR with N1 24u block.

 

[Bolle]

I cant tell you how much safe is.
But I run 931whp (1119hp) on my std R34 GT-R crank.

 

[GTRSTILL]

wow...

 

[worpdrive]

thats real cool then that should give me a 400bhp safety margin.

 

[james1067906]

the thing that need to be watched with the standard crank(the way it comes from the factory) is rpm above 8k... get it balanced etc and youll be fine

 

[bigkev]

as said, cranks only really suffer with high rpm, get it balanced and you can do 10k rpm. why not?

kev

 

[Irish GTR]

I cant tell you how much safe is.
But I run 931whp (1119hp) on my std R34 GT-R crank.

On a R34 standard gearbox too??

 

[SklyaFett]

and a standard clutch :flame: joking

 

[Steve]

Lol, I was informed that if you wanted to go above a proper 500bhp atw you should rebuild with full steel internals or if you like your tuner that much I am sure he will re build and re build again and again, they just love taking money off us

 

[Red R Racing]

ive seen stock cranks produce 1250hp at the wheels...all four!...Stock block too!

 

[Steve]

Red R Racing

Yeah, but how long did it last???? My Steel eng is good for 1000bhp, but I use it well within its safety envelope at 720atf and 600atw.

Steve

 

[Red R Racing]

Red R Racing

Yeah, but how long did it last???? My Steel eng is good for 1000bhp, but I use it well within its safety envelope at 720atf and 600atw.

Steve

raced in car for 2 seasons and ran a best of 7.84 @ 184

was perfectly ok on stripdown but has been replaced with a full counterweight 2.6 item.

 

[Steve]

So does that mean it only lasted for 2 years ?

I have had mine for 11 (eng only 4 years old with about 2000 miles a year)

 

[Red R Racing]

So does that mean it only lasted for 2 years ?

I have had mine for 11 (eng only 4 years old with about 2000 miles a year)

no its just the option of putting a full counter crank in came along at the end of the season when the engine was being freshened so it was put in instead of the perfectly good stock item.

 

[Steve]

Ah so the crank was replaced then ?

 

[Red R Racing]

Ah so the crank was replaced then ?

yeah its in another engine now.

 

[R.I.P.S NZ]

1400hp/10,000rpm on a stock 20 year old RB30 crank and block for 2 years of abuse, still in the same motor, in a different car, still running fine.

There is nothing at all wrong with a properly prepared stock crank even for 7 and 8 second cars, its been proven more than once and its proven reliable.

Rob

 

[Steve]

[QUOTE There is nothing at all wrong with a stock crank even for 7 and 8 second cars, its been proven more than once and its proven reliable.

"properly prepared" Those are the Correct words !!! Soooooo many arnt !

 

[worpdrive]

Rob can you tell me what would be reqired to balance a crank
RB26 running about 550 atw. R34 N1 block Pistons and rods. ATI crank damper pulley
any help thanks

 

[Bolle]

On a R34 standard gearbox too??

No, I am still using my standard R33 gearbox for the moment

And like the others are writing, no parts are mounted in my engine without being "properly prepared".