ARP headbolts

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04-26-2012, 07:23 PM

#21

custm2500

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Quote:

Originally Posted by Paul Bell

Bolt with radius fillet between the head and body:

Washer with undercut chamfer for clearance of radius fillet in bolt:

Crankshafts have these same features on journals and have matching bearings.

Came in to find the correct way for the washer and learned this! I would assume in a typical application torque isn't as important thus the washer doesn't have a relief?

Dose this matter for studs? Since the nut doesn't have a fillet?

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04-26-2012, 08:53 PM

#22

S10xGN

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Quote:

Originally Posted by custm2500

Came in to find the correct way for the washer and learned this! I would assume in a typical application torque isn't as important thus the washer doesn't have a relief?

Dose this matter for studs? Since the nut doesn't have a fillet?

No, only needed for the fillet on the bolt head...