another exhaust leak?
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Junior User
Joined: Nov 2009
Posts: 68
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From: socal
another exhaust leak?
What header gaskets are best? '05 5.4. I put JBA headers couple years ago, and i think passenger side may be starting to leak again. Is it possible my head is not true and flat anymore? Before changing mainfolds due to leak, i did drive it a lot and hard. Maybe 15k with leak
Postmaster
Joined: Jul 2008
Posts: 2,565
Likes: 2
It's most probably the header flange that's not flat. The mounting surface of the head is probably flat enough. You can lay a staight edge along the mounting surface of the head and the header flange to check. Mr. Gasket and Fel Pro both are good quality gaskets.
Cargo Master
Joined: Aug 2002
Posts: 2,013
Likes: 6
From: Cajun Country
When I use to install headers on my engines I would use Mr. Gasket copper gaskets with Stage8 header bolts.The copper forms to the irregular spots of the header flange.The Stage8 bolts have a snap ring and retainer that goes on the bolt head and locks against the header to keep the bolt from backing out.
World's Best Locking Fasteners & Locking Nuts and Bolts STAGE 8
World's Best Locking Fasteners & Locking Nuts and Bolts STAGE 8
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