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Jeep Wrangler YJ
YJ General Discussion
A Repetitive Manifold Problem
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<blockquote data-quote="Gilaguy23" data-source="post: 436949" data-attributes="member: 19498"><p>Heres my $.02. #1 potential issue. Rough roads and a exhaust system that does not have sufficent hangers has lead me to what you have going on. I fabbed a exhaust mount from one of the bell housing bolts to cradle the down pipe, 2 years now and no problems. #2 you might try nixing the bolts and using studs and the crimped type copper nuts that are self locking. Dont use Nylocks as the lock ring will melt. Make sure things are torqued evenly. Dorman I IRC sells the uber think manifold washers. If I recall when I did the mani in my 95 the gasket kit had 2 gaskets,one to fully cover the ports or both intake and exhaust. It also came with a thin gasket type material one for just the intake IIRC. That made for the two manifolds not setting at the same plane as far as the washer area went, and using flat washers would not really apply the same force on the 2 manifolds. This is where the cupped washers seemed to be able to use their edge to push the same on both manifolds. That's all I got. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite4013" alt=":sneaky:" title="Sneaky :sneaky:" loading="lazy" data-shortname=":sneaky:" /></p></blockquote><p></p>
[QUOTE="Gilaguy23, post: 436949, member: 19498"] Heres my $.02. #1 potential issue. Rough roads and a exhaust system that does not have sufficent hangers has lead me to what you have going on. I fabbed a exhaust mount from one of the bell housing bolts to cradle the down pipe, 2 years now and no problems. #2 you might try nixing the bolts and using studs and the crimped type copper nuts that are self locking. Dont use Nylocks as the lock ring will melt. Make sure things are torqued evenly. Dorman I IRC sells the uber think manifold washers. If I recall when I did the mani in my 95 the gasket kit had 2 gaskets,one to fully cover the ports or both intake and exhaust. It also came with a thin gasket type material one for just the intake IIRC. That made for the two manifolds not setting at the same plane as far as the washer area went, and using flat washers would not really apply the same force on the 2 manifolds. This is where the cupped washers seemed to be able to use their edge to push the same on both manifolds. That's all I got. :sneaky: [/QUOTE]
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Jeep Wrangler YJ
YJ General Discussion
A Repetitive Manifold Problem
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