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Post by nutandbolts on Jul 12, 2022 9:09:47 GMT
Hi all, does anyone know the thread size of the exhaust manifold to tailpipe studs (villiers Junior De-luxe 98cc) I have tried loads from my boxes of bits but only managed to fine a couple of bolts that are a bit of a sloppy fit.
Any help will be most welcome.
Regards Larry
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Post by JamesCentral on Jul 12, 2022 10:49:14 GMT
I don't know the size ... but I can tell you that they are the same as the shorter studs that hold the manifolds onto the cylinder block.
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Post by nutandbolts on Jul 13, 2022 9:10:44 GMT
I don't know the size ... but I can tell you that they are the same as the shorter studs that hold the manifolds onto the cylinder block. Thanks for that, I will try to determine the thread from those, I think I have some thread gauges (somewhere!) Regards Larry |
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Post by JamesCentral on Jul 13, 2022 16:20:18 GMT
Apologies if you know all this already ... but studs commonly have different thread pitches at each end, so you'll have to remove a stud to measure it properly.
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Post by nutandbolts on Jul 14, 2022 14:09:50 GMT
Apologies if you know all this already ... but studs commonly have different thread pitches at each end, so you'll have to remove a stud to measure it properly. You are right and I never thought of that, I do not have a stud to take out, it is a complete engine without any studs or bolts on the manifold (to exhaust pipe) the top manifold bolts to the barrel are not the same size they are a lot smaller. Thanks Larry |
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Post by JamesCentral on Jul 15, 2022 10:31:35 GMT
Tailpipe to exhaust box studs have the same part number as the shorter manifold studs - so, if they are different sizes now it probably means that someone has stripped the original thread and recut them to a larger size - and who knows what size they might have chosen.
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Post by nutandbolts on Jul 15, 2022 14:14:01 GMT
Thankyou again JamesCentral I will keep searching my boxes of bits to find a couple of suitable bolts, the engine came with the manifold, gasket and the short stubby pipe about 2" long so there will be no pressure on the bolts, I will use the nearest I can find with some loctite on the threads and do them up gently
Thanks for your help
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