Manifold Inlet Bolts

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Oddsincity

Active Member
Posts
159
Location
Mendips ... Somerset area
I don't know whether anyone can help ... I've noticed the manifold has cracked on my series 3 and getting a new one was easy enough ... however on taking the inlet/exhaust manifolds off I've notice the two of the inlet manifold bolts are missing ... These are the bottom ones so I have two holding it on instead of four ... Believe it or not the trucks run ok like this ... However I like to do the job right and I was wondering where I could get some more bolts for the inlet manifold ... It's a series 3 five bearing engine 1982 ... Thanks Odds
 
Had the same prob. Take One of the bolts to your nut n bolt shop. Get a handfull of longer bolts with nuts and washers. Put the nuts on bolts. Screw them into the head till tight and then tighten the nuts up till you are happy. It saves having two different threads. Use a bolt with 8.8 on it. Itl be a unf thread. But if the threads knacked in the head try using same idea but metric threaded bolts. If that doesnt work. Heliciol is the next thing to do. You can buy diy kits from bike mags and the like. If the missing studs are from the bottom two centre you need two small flat collars. One stud holds the inlet and exhaust manifold each.
 
Yeah thanks very much for that ... Especially the size of the bolt 8.8 ... I used to work for an engineeing company ... That was 20 years ago and the memory has faded a bit ... Thanks again.
 
8.8 is not the size of the bolt its the tensile strength, 8.8 is standard cheapo rating, 12.8 is high tensile, and 16.10 is super high tensile.
8.8's are fine for the fanimold, unf is the thread, if you get bolts that are too long, screw them in not too tight into the head, then put the fanimold on loose then cut the heads off too the right length, pretty sure this is what t'other guy meant.
Take one of the old bolts to an engineers merchants and just say you want set srews a little longer with the same thread.
 
Thanks dr pepper for the info ... Strange as it may seem I chanced accross an old parts list and I was looking at the page with the exhaust manifold and at the bottom it had 'Exhaust Manifold Fixing kit 606988' ... I typed this number into the comp and up came the kit at Paddocks for £1.49 ... Prob solved ... But thanks again Odds
 
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