preventing exhaust manifold crackage
08-13-04, 05:19 PM
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Hot Dicken's Cider
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preventing exhaust manifold crackage
I bought a turbo that came with an ebay stainless tubular manifold, and im trying to figure out a way to prevent it from cracking. do they crack just because of the heat cycles or because of the weight/heat cycles? i was thinking about making some sort of bracket with a turnbuckle from the bottom of the turbo flange to my motor mount in a way so that i could expand the turnbuckle and take some of the weight off of the manifold. would this help? how long before the manifold starts to crack without support?
also, what should i use for wastegate vac lines? just silicone hose? or would braided ss lines work better?
also, what should i use for wastegate vac lines? just silicone hose? or would braided ss lines work better?
08-13-04, 09:07 PM
#2
I R SAD PANDA W/O BAW
One of my buddies bought one of those ebay SS manifolds (ssautochrome) for his sr20 and it couldnt even seal, probably because it wasnt machined correctly. I wouldnt trust one of those at all. I just used silicone vac hoses for the wg vac lines.
08-13-04, 09:21 PM
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yes, i am aware that it is crap, but its the only choice i have for the time being, and need to find a way to prevent it from falling apart or whatever. if it doesnt seal right, i can just get it milled down a little.
08-13-04, 09:34 PM
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I'm pretty sure the SS manifolds crack due to the high temperatures causing them to expand and cracking the welds. I'm not sure if ceramic coating would do anything helpful.