How did the machining go? Did you have to convince them? How much did it cost?
Exhaust manifold gaskets
- Thread starter Colt45ws
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I didnt deal with them. My dad took them and had them machined. Was $70 by the way. Still not leaking.
Well, I hate to dig up an old thread, but the leak is back with a vengeance. Im going to try tighting them first before anything drastic. But Im not too sure, it sounds pretty bad. Very random too. It hasnt been stressed lately, just DD duties.
Did you use gaskets, or did you simply bolt manifolds directly to the heads with a bit of RTV as suggested earlier?
I've worked on diesel engines for 12 years, and I've never seen anybody use the aforementioned no-gasket method. Not saying neccesarily that it wouldn't work (as I know there are automotive applications out there that don't use exhaust manifold gaskets), but I'd be a bit leery of it... especially in your case where the exhaust gasket surfaces on the head were not freshly machined.
If you DID use gaskets, and they've failed again, then I suppose you have no choice but to take it back apart. Re-check the flatness of the manifolds, and also check the flatness and surface condition of the exhaust gasket surfaces on the heads.
I've worked on diesel engines for 12 years, and I've never seen anybody use the aforementioned no-gasket method. Not saying neccesarily that it wouldn't work (as I know there are automotive applications out there that don't use exhaust manifold gaskets), but I'd be a bit leery of it... especially in your case where the exhaust gasket surfaces on the head were not freshly machined.
If you DID use gaskets, and they've failed again, then I suppose you have no choice but to take it back apart. Re-check the flatness of the manifolds, and also check the flatness and surface condition of the exhaust gasket surfaces on the heads.
I used gaskets with super high temp copper RTV on both sides.
Like I said, Ill check the torque while its cold and make sure they are all at spec, but I dont know.
Something funny happened though when I left the hood open to let it cool: http://colt45.ws/coppermine/displayimage.php?pos=-230
Like I said, Ill check the torque while its cold and make sure they are all at spec, but I dont know.
Something funny happened though when I left the hood open to let it cool: http://colt45.ws/coppermine/displayimage.php?pos=-230
Buick Ball. Useless trivia:Buick was the 1st car builder to use them. he was told that it would never seal.
I did finally get to checking them out when it was cold and the front two bolts on both sides were way loose. I tightened them up and no more leak. I find it odd the other bolts were still tight when the fronts had worked their way out. Oh well.
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So this is the 2nd re-torque? Or the third time to tighten the front bolts?
2nd retorque. Im going to keep an eye on the front ones.
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