Why is it louder?
#1
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Join Date: Oct 2009
Location: Fauquier County, Virginia
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Year: 1991
Model: Cherokee
Engine: I-6 4.0 HO
Why is it louder?
So, here recently my '91 XJ has been getting loud during higher rpm acceleration. When I first start her up its fine, no noise other than the normal. Then, when the temp is 210 and the engine is warm, during the accel period from about 2,500 - up RPM its louder. No performance loss, still runs like a champ and shifts well, all that goodness. But its loud, kinda like a car runnin with just headers. Im thinking a header crack (i figure Im do for one considering everyone says it happens sooner or later, and having 200k miles i guess its my time). Is this my most likely prob? Whats the best way to check?
Thanks everyone.
Thanks everyone.
#2
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Year: 83 CJ7 & '96 XJ & '97 XJ
Model: Cherokee
Engine: 258ci, 4.0 & 4.0
Most likey it has cracked at the collector on the Header, I took mine and welded some straps over the weak areas and it works great, if you go to a Muffler shop most likey it will cost about $20.00 to get it welded.
#3
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Year: 1991
Model: Cherokee
Engine: I-6 4.0 HO
Thank you. The collector is the bit where all tubes combine right? So just climb under the old girl and look for a crack along the header?
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