What did you Torque your ARP Head Studs to? - Page 2 - Miata Turbo Forum - Boost cars, acquire cats.

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Old 05-10-2015, 02:07 PM   #21
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It undoubtabley is an over torque problem. But the earlier sets of head studs we're going out with a recommended 80ft/lbs. They now say that's for 7/16 studs, we have 10mm studs afaik, and those instructions say 60ft/lbs.
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Old 05-10-2015, 02:18 PM   #22
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That was several years ago and the instructions were 80#. I just use OEM washers as that is what the head was designed for. Not saying there is an issue with the ARP washers at 65# but I know for sure there isn't going to be one with the OEM's and They well spread the load out more on the boss.
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Old 05-10-2015, 04:21 PM   #23
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There is a post somewhere that talks about how there was a guy at ARP who designed the studs in conjunction with FM and they used to have a 65ft/lb torque instruction. Said designer also apparently no longer works there and yadayada, someone else should link to it, I'm on mobile.
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Old 05-10-2015, 04:38 PM   #24
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See post #3.
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Old 05-10-2015, 04:40 PM   #25
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Yep that would be it. I was wondering why it was still being questioned. Thought that post hadn't come up.
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Old 05-10-2015, 04:55 PM   #26
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