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Thread size required

Posted: Sun Sep 12, 2010 2:37 pm
by outboard
Hello friends

Not much work been going on in my garage due to workload, hence my absence from the forum.
Decided to make some time and get my two forty+ engines overhauled and put back together, alas in my rush I never cleared my bench and I've dropped one of the nuts off the two studs on the cylinder head. I'm buggered if I can find it. Can someone please give me the size of these stud threads. I think I've got a nut for every other size, just as you'd expect. :oops:

Cheers
Gerard

Re: Thread size required

Posted: Sun Sep 12, 2010 3:37 pm
by Horsley-Anarak
If the stud diameter is about 8mm (you can measure with a ruler) then the thread size is 5/16" B.S.F.

If the diameter is about 6mm then the thread is 1/4" B.S.F.

That covers about 95% of the engine :)

H-A

P.S. John has nice Stainless ones of you need them.

Re: Thread size required

Posted: Sun Sep 12, 2010 10:41 pm
by Vic
5/16" bolts on mine.