johnmcm Posted April 26, 2013 Share Posted April 26, 2013 I have a 2000 Mack with an E7 engine. I have a new three piece exhaust manifold. Does anyone know if there is a joint or assembly compound or sealant that should be used between the three pieces or should they be put together dry ? Quote Link to comment https://www.bigmacktrucks.com/topic/30980-assembly-of-exhaust-manifold/ Share on other sites More sharing options...
br549 Posted April 26, 2013 Share Posted April 26, 2013 Years ago when they would leak and right new we would pull them apart and put NAPA exhaust sealant around the joint and slide them in, be careful not to get excessive amounts in the manifold, but the last 4 or 5 we put on that came from Mack we just put them on dry but before we tighten the nuts up we knock the manifolds together tight and we not had any leaks. Quote Link to comment https://www.bigmacktrucks.com/topic/30980-assembly-of-exhaust-manifold/#findComment-180551 Share on other sites More sharing options...
hatcity Posted April 27, 2013 Share Posted April 27, 2013 I just put mine together dry.Add a dab of high heat RTV to the studs before installing again.I remember hearing that you should install new studs and make sure you have 1-3/4 inch showing Quote Success is only a stones throw away.................................................................for a Palestinian Link to comment https://www.bigmacktrucks.com/topic/30980-assembly-of-exhaust-manifold/#findComment-180559 Share on other sites More sharing options...
farmer52 Posted April 27, 2013 Share Posted April 27, 2013 I just put mine together dry.Add a dab of high heat RTV to the studs before installing again.I remember hearing that you should install new studs and make sure you have 1-3/4 inch showingHat! You grew a beard. Isn't it a little warm in FL to be growing a beard...or can't you afford a razor? Sorry for hijaking the thread. Quote Ken PRR Country and Charter member of the "Mack Pack" Link to comment https://www.bigmacktrucks.com/topic/30980-assembly-of-exhaust-manifold/#findComment-180561 Share on other sites More sharing options...
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