Getting tired of gaskets blowing out on this '01, 4.0 exhaust.
Got the motor together with a header from Jegs and in the break in period I guess the exhaust on #5 'somehow' got kinked and thought the 'papping' noise was coming from the lower flanges not being tight enough. The head flange is just a bit thinner than the intake material and thought that the concave washer would pivot and take up the difference. NOPE
Well, burnt it and now have to go through ALL THIS AGAIN to change it out What a goofy design putting the cats SOO close to the block..
It took me most of the day to take ALL the washers off that hold BOTH the intake and exhaust together, put some weld bead on 1/4 of it and bolt it back together so the weld would give the washer even clamping force.

Anyhow, Was wanting to know if anyone sells dead soft copper or aluminum
intake/exhaust gaskets so I won't have to waste another weekend doing this all over again.
(BTW, engine runs pretty well! But only has about 7mi on it so far)

E

(p.s. they should have made it a cross-flow head to start with)

 

Jeep DID make a crossflow head. Overhead cam also. In the 60s!!