Davecrx Posted October 4, 2010 Share Posted October 4, 2010 as it says above i need the size for the bolts that hold the hotwire inlet manifold to the heads on a v8 because i've lost mine and need to replace them. Quote Link to comment Share on other sites More sharing options...
Range Rover Blues Posted October 4, 2010 Share Posted October 4, 2010 I think they are metric, M8 at a guess but could be wrong. I do remember that a couple at the back end are shorter than the others. Quote Link to comment Share on other sites More sharing options...
streaky Posted October 5, 2010 Share Posted October 5, 2010 I don't think they are metric. When I fitted some stainless headers to my 4.6 they came with some American made studs which looked like a coarse 3/8 UNC thread. (Yanks don't make anything in Metric!) Be 100% sure before you try forcing a bolt into the aluminium block. Quote Link to comment Share on other sites More sharing options...
Range Rover Blues Posted October 9, 2010 Share Posted October 9, 2010 Worth checking then. I think I used M8 before now on exhaust manifolds but it was a while ago. Quote Link to comment Share on other sites More sharing options...
tel Posted October 20, 2010 Share Posted October 20, 2010 inlet and exhaust manifolds run 3/8 unc thread on a 3.5/3.9 Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted October 20, 2010 Share Posted October 20, 2010 ... and on a 4.0 serp too. Quote Link to comment Share on other sites More sharing options...
tel Posted October 20, 2010 Share Posted October 20, 2010 microcat says you need 10x 1 1/2" long and 2x 2" long Quote Link to comment Share on other sites More sharing options...
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