Bounty Hunter Posted May 18, 2010 Share Posted May 18, 2010 I checked the FAQ and didn't see it in the bolt thread, looking for the bolt size to attach the intake/exhaust manifolds to the head. Just bought an '89 2.5L 'manche and it's missing 4 of the 7 or so bolts holding the manifolds on. Thanks. Link to comment Share on other sites More sharing options...
Geonovast Posted May 18, 2010 Share Posted May 18, 2010 Does it have both studs? The studs are a different thread. Link to comment Share on other sites More sharing options...
airspeed Posted May 18, 2010 Share Posted May 18, 2010 I'm not home right now so I can't check for sure but 3/8-16 comes to mind for the bolts. There is a stud on the front exhaust #1 that is a different size. Ace hardware carries the good grade 8 bolts. It is important to use the factory conical washers. They are designed to absorb the varied expansion and contraction of the dissimular metals, aluminum and cast iron. Link to comment Share on other sites More sharing options...
Mike '87 daily driver Posted November 8, 2014 Share Posted November 8, 2014 I'm missing a couple of manifold bolts toward the rear. Looks like 3/8", but can't tell if they're coarse or fine. Does anyone know? Thanks Link to comment Share on other sites More sharing options...
MuddFoot Posted November 8, 2014 Share Posted November 8, 2014 i wouldnt use grade 8 there just incase you really ever break one drilling would be a pita Link to comment Share on other sites More sharing options...
Rockfrog Posted November 8, 2014 Share Posted November 8, 2014 Bolts are 3/8-16 x 1.25" Studs are 3/8-16 on the head side, and 3/8-24 on the manifold side. Link to comment Share on other sites More sharing options...
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