03-07-2014, 10:56 AM
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CC Member
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Join Date: Feb 2006
Location: Gilroy,
CA
Cobra Make, Engine: SPF 2291, Whipple Blown & Injected 4V ModMotor
Posts: 2,741
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Not Ranked
Quote:
Originally Posted by LJ47
Did consider them they do fantastic work and their reputation is unquotable.
Craig
Regarding material everyone manufacturer has their preferred product.
So for an engine that is projected to make 320RWK at 7500rpm what to use.
Do I need a crank that is made out of titanium or cast steel.
Is the material the critical factor or is the balancing and end weight.
So after a bit of a think I have placed an order with Bryant Racing in the US crank made from billet 4340 Timken steel lightened knife edged and balanced 12 week lead time.
See how we go this time I guess.
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Bryant makes an excellent crank, LJ and if you can get it in 12 weeks that is not unreasonable. Check your steels again. I think you meant to say Timken 4330V. The Timken 4330V steel is decidedly tougher than the best 4340. Bryant can offer you either.
It is unfortunate what you had to go through. Why didn't you use the crank shop close by? There can be real advantages to proximity other than the lower cost compared to the imported crank. It sounds like the local crank shop had access to the Timken 4330V steel also.
Ed
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