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detroit 8v71

Home > Discussion Forum > Mechanic's Corner - Engines

Email Author email Jeff Cheek  Reply to Message reply to message  Post New Message post new message      search forums
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Re: detroit 8v71 by Jeff Cheek
Post New Message Matt,
My 1975 MC-8 Crusader with an 8V-71 has an oil bath element in it. It has to have oil in it to properly filter the air! I'm assuming you know this already but I thought I'd mention it! There's like about a gallon in there! Maybe an oil gallery(ies) opening has clogged up, with some gasket material or something, in the head, on that side? The only other thing that means to me is that there is blow by gases that are coming from a bad ring(s) on that bank but since those are new I'd blame it on the cylinder head. The valve guides could be shot or the extra pressure that is now building up in the engine since the rebuild, is causing the heads or head gaskets to pune out. If you rebuild the heads on a regular car engine without rebuilding the bottom, it will eventually go out on you, most probably. If you just build the bottom, it will usually crap out your heads! I hope you figure it out & it isn't too bad!
Take Care,
Jeff :)
All Messages in ThreadAuthorDate
Post New MessageDetroit 8v71 matt laubert 1-30-07  
  Reply to MessageRe: detroit 8v71 Jeff Cheek 2-22-07  
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