Regarding the header clamp and also a mystery piece

[Joker_Da_Man]

Getting my engine back together finally. It has 155 PSI compression in each cylinder when kicking it which I believe is good so things are looking up. I just have a couple questions (didn't want to add on to my months-dead old thread).

I can't figure out how the header clamp stuff goes together. There is the two piece ring that I think goes inside the big ring but I can't figure out which way to position them. In the picture, the way I have the one on the left leaves the header loose. The way it is on the right I can only get the nuts on about half-way. This is with the gold metal o-ring between the header and the engine block (it is the same diameter as the end of the header so should sit in there pretty nice). It could be that the o-ring doesn't belong there. I just got it as part of the gasket set I ordered, which didn't have any descriptions of course.

And any ideas what that bushing in the picture is for? I think it fell off of the front end (fork area) of the bike when I was wrenching on the engine, or at least that's where it sounded like it hit the floor.

The image: http://mine.axvigs.com/cb360/WP_000366.jpg

 

[jay_kent]

Can't tell from the pic, but is that a rubber bushing? it may be between the fins. I know on my cb that the copper o-ring (gasket) nests inside the exhaust cavity and the two piece ring (exhaust collar) goes on like the one on the right side in your image, he mushroomed top goes against the exhaust joint holders.

Take a look at this image for my cb650, but similar parts . The two piece ring is number 2, exhaust joint is number 1, gasket is number 3. Bushing is nada.
I use http://www.cmsnl.com to look up where parts should be.

 

[Sonreir]

Like jay said, the flanges fit with the curved end inside the collar and the straight edge butts up against the header. The copper gasket fits inside the exhaust port and is crushed when tightening down the nuts on the exhaust studs. Make sure there isn't one (or more) crushed copper gaskets inside the head already. Sometimes they don't always get removed during disassembly.

 

[Joker_Da_Man]

OK it is very possible that there is a gasket stuck in there.

The bushing is rubber and pretty dirty. The whole curved surface is grim coated and the flat sides are more clean so it must be more of a spacer than a bushing since it was sandwiched between stuff.

 

[jay_kent]

sure is possible that the crushed gasket is in there. Use a small screwdriver and pick around the edge. I've had an old motor where some of the gaskets popped right out and others I had to peel out in pieces.

 

[Joker_Da_Man]

Yep got the gaskets out just fine a few weeks ago. Thanks for the help!