ARP bolt torque spec (flanged crank)

[John French]

I can't find any info about what the torque spec is for the ARP bolts used on flanged cranks. No info for the Bugpack crank and ARP doesn't have a kit listed for VW's. It looks like the same size ARP bolts (12pt 3/4" head) are either 95 or 100 ft/lbs based on what I saw on the website. What is everyone using on here?

John

[jsturtlebuggy]

SCAT shows for ARP2000 big head 7/16-20 thread torque to 80-85 ft lbs in their catalog.
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Joseph
Fair Oaks/Orangevale, CA
Elrod Motorsports
Motion Tire Motorsports
Having fun with Dune Buggies since 1970
Into Volkswagens since 1960

[John French]

Good call. I went out and measured the actual bolts. ARP Pro bolts say 85 ft/lbs for 7/16-20. It is funny because they make metric sizes with the same 12pt 3/4" head.

John

[rrcade]

I believe correct way is to measure stretch also
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