split collars too short

The split collars im using will not butt up to the collar for the header im using. They are 1/2 inc long and i need about another 1/4 inch. Anyone have a spare set?

Nick

last resort, use extra exhaust gaskets to fill the gap

1/2 in long? Sounds way too short1 Using the collars that came with the bike? Been a long time but IIRC mine are about 1" to 1 1/4" long. Got pics?.....

Sounds pretty strange! Here's what usually happens. An owner buys an aftermarket system and finds that the system won't bind up tight. The problem usually stems from the flanges on the exhaust system being too thin. The solution is to add a used gasket with a new gasket, It's worked for me.

kzcsi

what kind of header are you using?

Bluemeanie, do you know where you got your split collars???
Sorry to high jack the post, but i too have this problem. I noticed that the stock exhaust has about 1/2 inch collar welded to it. This is where the slightly over 1/2 inch split collars push up against, then snugging the header to its home. In the end you have a 1 to 1-1/4 inch split collar to fix the problem. For now I made some crappy washers/split collar extenders out of tinfoil and super glue, just so I can ride.

im using an old Russ Collins header, i found some new split collars on ebay so im good to go as soon as they arrive.

Nick

ive seen shorter collars,i think they are for j-style head;)

krcrawford29 wrote:

Bluemeanie, do you know where you got your split collars???
Sorry to high jack the post, but i too have this problem. I noticed that the stock exhaust has about 1/2 inch collar welded to it. This is where the slightly over 1/2 inch split collars push up against, then snugging the header to its home. In the end you have a 1 to 1-1/4 inch split collar to fix the problem. For now I made some crappy washers/split collar extenders out of tinfoil and super glue, just so I can ride.

I ran into this when I put an exhaust from a 2002 ZR7 on my 650 C-1 the collars from the 650 were too long. I needed the shorter ones like what is used on the 650H or the 750H. I just ordered new ones from Kawasaki as I recall they only cost like $3.00 each. I can't say for sure if the longer collars are still available you might try checking your friendly local Kawasaki dealer though.

When I bought my Kerker back in '81, everything bolted up perfect with the stock collars that came with the bike. Of course this was way back when they made headers that fit perfect!

An extra 2mm thickness may not be enough in this case, but here's Z1E's link suggesting an alternative to the oem Kaw copper gasket.

kazuki