stripped derby cover threads
#1
stripped derby cover threads
What to do.
I was changing the derby cover and was torquing to spec when the 5th screw would not click. Any how over tightened and when I back the screw out it came out with the aluminum threads from the outer primary cover.
What should I do?
Helicoil? Bigger thread size and bigger screw? Retap with 1/4 28 to move up in size from 1/4 20? Help?!
I was changing the derby cover and was torquing to spec when the 5th screw would not click. Any how over tightened and when I back the screw out it came out with the aluminum threads from the outer primary cover.
What should I do?
Helicoil? Bigger thread size and bigger screw? Retap with 1/4 28 to move up in size from 1/4 20? Help?!
#3
drill all the way thru
I read somewhere that you won't want to drill all the way thru. Are you sure it's acceptable to drill all the way thru?
#4
Join Date: Mar 2007
Location: Chicago suburbs (Elgin/Schaumburg)
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i did on mine years ago, never had an issue, i first tried to drill it out without going all the way though and used a flat head tap to retap it, did not get the bite i hoped for so i drilled it, teflon on the bolts and never had an issue. later i welded up the intdent on the primary and replaced the primary to do it but it worked great for years
#6
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