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Jun 13, 2018 8:26 pm
Jun 13, 2018 8:26 pm
Subject: Re: Exhaust Manifold Gasket
Yes I'm debating whether to change the two 5/16 BSF - 1/4 BSW studs to new all BSF ones or just slap a couple of 1/4 BSW brass nuts on them and forget about the whole annoying episode.
Interestingly, the BSF HT bolts readily available on the Internet (following through on Colin's suggestion) are Grade R or 8-8 (seem to be synonymous terms) and, if I have it correctly, will have a UTS of at least 800 Mpa or MN/m^2. This is much less than the 1100 that Bill recommends. Also the stainless studs available are of grade 303 and these have a UTS of about 750 i.e. very little different from the HT ones. I've learnt quite a lot about megapascals but am increasingly of the view that keeping the rogue studs and using BSA nuts is the obvious if cowardly thing to do.
Thanks for the help, this is why this forum is so great.
Yes I'm debating whether to change the two 5/16 BSF - 1/4 BSW studs to new all BSF ones or just slap a couple of 1/4 BSW brass nuts on them and forget about the whole annoying episode.
Interestingly, the BSF HT bolts readily available on the Internet (following through on Colin's suggestion) are Grade R or 8-8 (seem to be synonymous terms) and, if I have it correctly, will have a UTS of at least 800 Mpa or MN/m^2. This is much less than the 1100 that Bill recommends. Also the stainless studs available are of grade 303 and these have a UTS of about 750 i.e. very little different from the HT ones. I've learnt quite a lot about megapascals but am increasingly of the view that keeping the rogue studs and using BSA nuts is the obvious if cowardly thing to do.
Thanks for the help, this is why this forum is so great.