[DeTomaso] 180 header rattle

[Asa Jay Laughton]

Hi all,
I’m working on a Pantera with 180 headers.  Where the crossover is, two sets of tubes are held together with tabs and a small bolt, while the other two are not.

The issue is that the single tube from cylinder 3 is part of the crossover and the only place it bolts down is at the exhaust port, and it’s tight.  But it rattles something fierce over the mating tube at certain rpm’s.

Second issue is that all the joints at the crossover, four of them, are leaking exhaust.

1.  Recommendations on stopping the rattle?
2.  Are there supposed to be some kind of header gasket/donut in each of the crossover tubes to seal them together and prevent leaks?  Assuming there is supposed to be something there, I imagine it would stop the rattling too.


Thanks all,
:)
Asa  Jay

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