the supra studs need to be 6mm longer from my experience.
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Just buy the opel kit and be done.Anything new on the Opel vs Supra vs Whatever for best fit / no interference? Anyone have the precise dimensions on stock head bolts? Wanna talk to ARP on that...
Sent these photos to ARP contact, who thinks (just eyeballing the photo) that the Supra looks too long as well. I've not handled either; what's the deal here? Shouldn't it--ideally--be the same length as the head bolt?the supra studs need to be 6mm longer from my experience.
Interesting thought. Would a used discard have the same measurements--or, rather, measurements that are close enough for this purpose? Somebody's gotta have one of those laying around...It would be easier to buy a new head bolt and washer (for ~25 bucks) and send them to ARP to measure themselves.
You can’t do that comparison as the studs are threaded to the shoulder and you have no idea what the depth of the bolt is in the block.Sent these photos to ARP contact, who thinks (just eyeballing the photo) that the Supra looks too long as well. I've not handled either; what's the deal here? Shouldn't it--ideally--be the same length as the head bolt?
Interesting thought. Would a used discard have the same measurements--or, rather, measurements that are close enough for this purpose? Somebody's gotta have one of those laying around...
Strangely enough that is what I used to determine what we need.Ideally one would have a block, head and head gasket to make the most accurate determination. I am not a fastener engineer however. I fly a desk.
I've got an exec's ear, so maybe I'll get somewhere (fingers crossed). So, this is useful info. With the Supra threaded until the shoulder stops it, there's no thread protruding ABOVE the ARP-supplied stud, and no cam interference--is what you're saying? And what washer are you using? Thanks!You can’t do that comparison as the studs are threaded to the shoulder and you have no idea what the depth of the bolt is in the block.
I installed Supra studs down to the shoulder and there was no tread protruding the nut after install. IMO we need a 6mm longer “Supra stud” or a shorter opel stud.
I tried several time to get someone to listen to me to no avail. I realize that they get tons of requests that are completely out in left field. But I’m positive I’m correct.
Strangely enough that is what I used to determine what we need.
With the Supra stud fully engaged to the shoulder, once you add the washer and torque the nut to spec, there is no threads of the stud protruding through the top of the nut.I've got an exec's ear, so maybe I'll get somewhere (fingers crossed). So, this is useful info. With the Supra threaded until the shoulder stops it, there's no thread protruding ABOVE the ARP-supplied stud, and no cam interference--is what you're saying? And what washer are you using? Thanks!
Okay--what about the front two, is it, that need to clear the cams? Should they be shorter on the bottom? How much shorter? If I can give him these numbers, and he can mix and match off the shelf, maybe I can get some samples to try out (or have someone else try out). Worth a shot. Also, Ive read that some use the head bolt washers with these studs. What are the specs on those?With the Supra stud fully engaged to the shoulder, once you add the washer and torque the nut to spec, there is no threads of the stud protruding through the top of the nut.
Plane and Simple, WE NEED STUDS 6MM LONGER THAN SUPRA STUDS with that same theaded sections at each end.
Good luck getting this through the skulls at ARP.
no, the opel studs are longer by too much. They work fine except under the cams. There added length contacts the cam sprockets and requires trimming the front Two studs.Okay--what about the front two, is it, that need to clear the cams? Should they be shorter on the bottom? How much shorter? If I can give him these numbers, and he can mix and match off the shelf, maybe I can get some samples to try out (or have someone else try out). Worth a shot. Also, Ive read that some use the head bolt washers with these studs. What are the specs on those?