Anyone broken an ARP head stud?
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Anyone broken an ARP head stud? Has anyone broken an ARP head stud? And if so, did you just replace the broken 1, or did you order a whole new kit? Is the failure usually random, or related to batches?
I had a stud break during a rebuild but the rest were fine. Studs were torqued once for the original build in early '13, then once again on this rebuild just a few days ago. Purchased new from Hinson Supercars October 2012.
Attachment 724957
I had a stud break during a rebuild but the rest were fine. Studs were torqued once for the original build in early '13, then once again on this rebuild just a few days ago. Purchased new from Hinson Supercars October 2012.
Attachment 724957
I would definitely think that it is a random failure. Come to think of it your broken stud may be the only one I have ever seen.
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www.bmrsuspension.com
813.986.9302
Find a Quality alignment shop near you!
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From: Norn Iron
I broke an ARP head stud when torquing them up on my Mini 20 years ago.
Broke very similar, just flush with the block at the base of the threads. Have seen it happen with other's before too.
Not overly common, but any is too many
Broke very similar, just flush with the block at the base of the threads. Have seen it happen with other's before too.
Not overly common, but any is too many
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Joined: Mar 2010
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Were you using their paste like lube for torquing their fasteners?
Or just some motor oil etc.
That perma torque stuff they developed is supposed to be good ****. Used it on my china studs to 80lbs no issue haha.
Or just some motor oil etc.
That perma torque stuff they developed is supposed to be good ****. Used it on my china studs to 80lbs no issue haha.
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I called ARP and they basically said tough ****, you probably did some thing wrong either on the torque spec or not threading them down till the bottomed out. I know they bottomed out because the block was new and the threads were clean, and I know that the torque spec was set exactly at what they recommend in their latest instructions. The only useful thing he said was to look for hour glassing on the other studs and run a nut up and down the threads to see if it binds anywhere from deformed threads.
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Failures happen. You can't really expect a refund on a used part that wasn't torqued with a calibrated torque wrench. I bet money that those torque wrenches have never seen a calibration except from factory.
Inspect the other studs then order the replacement.
Inspect the other studs then order the replacement.
Yes I've had this happen, and it's usually because the stud bottomed out in the hole. A reputable machine shop in my area mentioned to me that they bottom them all out, then back them all off a thread.
Mine broke in the exact spot. ARP will not assume liability, as they didn't with me either.
Mine broke in the exact spot. ARP will not assume liability, as they didn't with me either.
Thread Starter
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Yes I've had this happen, and it's usually because the stud bottomed out in the hole. A reputable machine shop in my area mentioned to me that they bottom them all out, then back them all off a thread.
Mine broke in the exact spot. ARP will not assume liability, as they didn't with me either.
Mine broke in the exact spot. ARP will not assume liability, as they didn't with me either.
