Exhuast header split collars

Which way do they go on: into the ex inlet on the head or behind the exhaust pipe clamp.

they fit between the pipe flange and the head, the large side towards the exhaust gasket, you should be replacing the gaskets also

gaillarry wrote:

Which way do they go on: into the ex inlet on the head or behind the exhaust pipe clamp.

Usually the split collars are okay to reinstall. May want to clean then up with a wire brush.

Would always use new copper crush gaskets.

With exhaust clamps hanging loosely around header pipes and new copper gaskets fitted inside the head recesses (a dab of hi-temp sealant helps hold them in position), hold the headers in place on the head against the gaskets, and fit a pair of split collars onto each header pipe with the small non-flared end toward the engine to press against the flared ends of the header pipes. Use masking tape (or rubber bands) to hold the split collars in place during assembly. The flared ends of the split collars fit into recesses in the exhaust clamps. While holding everything in position, loosley start the clamp holder nuts onto the exhaust, and assure all parts being properly fitted and aligned before tightening the exhaust stud nuts against the collars.

Clamps press against split collars.

Split collars press against header flanges.

Header flanges press against copper gaskets.

Good luck with the installation!

Post edited by: Patton, at: 2007/09/17 12:09

I have also used masking tape to hold them to the exhaust pipe openings.. it burns off quickly