Collector bolt size?
Senior User
Joined: Mar 2003
Posts: 231
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From: Utah
There is no gasket there (machine fit). I used 3/8 coarse 3" stainless bolts when I put my headers on.
But the studs in the manifolds are 10X1.5. as are the three studs that attach the y-pipe to the main pipe just in front of the cat, there is a 3-bolt gasket there.
But the studs in the manifolds are 10X1.5. as are the three studs that attach the y-pipe to the main pipe just in front of the cat, there is a 3-bolt gasket there.
Hotshot
Joined: Mar 2007
Posts: 10,101
Likes: 40
From: Pa
Had a brain fart, thanks for pointing it out chissler. The 3 bolt flange where the cat pipe and the y-pipe connect have the gasket. The 2-bolt ball and socket connector on the manifolds has no gasket however you can use a thin film of Ultra Copper RTV on it to help prevent leaks. Both the 3 bolt flange studs and the studs at the ball/socket are M10x1.5.
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