RV8 Flywheel/Flex Plate to Crank Bolts

topcatcustom · Post by **topcatcustom** » Mon Mar 10, 2014 4:44 pm

Can someone please tell me the bolt diameter and thread please, are they 7/16UNF? The 6 that hold the fly/flex onto the crank.

harvey · Post by **harvey** » Mon Mar 10, 2014 6:27 pm

topcatcustom wrote:7/16UNF?

Correct.

topcatcustom · Post by **topcatcustom** » Mon Mar 10, 2014 9:07 pm

mgbv8 · Post by **mgbv8** » Mon Mar 10, 2014 9:16 pm

I use ARP bolts from Real Steel Tom.... Make sure you order Flex plate bolts though as the flywheel bolts are a different length.. That was my first mistake yonks ago

topcatcustom · Post by **topcatcustom** » Mon Mar 10, 2014 10:47 pm

And cap heads! Hoping I wont get trouble with the flex plate, seen several results on Google of them breaking, do you think its more high mileage or high power (torque or revs) that kills them?

kiwicar · Post by **kiwicar** » Tue Mar 11, 2014 6:56 am

Hi
It is high mileage/old age then hitting them with high revs, basically they work harden get surface cracks and then you seriously stress them and bang.
best regards
Mike

mgbv8 · Post by **mgbv8** » Tue Mar 11, 2014 9:44 am

Mine lasted from 2006 until last summer with racing only and no road use.
The ARP's are still fine

topcatcustom · Post by **topcatcustom** » Tue Mar 11, 2014 10:14 am

Cryo could help that too, if it makes the steel more ductile

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RV8 Flywheel/Flex Plate to Crank Bolts

RV8 Flywheel/Flex Plate to Crank Bolts

Re: RV8 Flywheel/Flex Plate to Crank Bolts