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1964 CP77 Exhaust leaks

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Fastwater Member
Posts: 25
Joined: Tue Jul 01, 2008 7:49 pm
Location: Brooklyn , New York

1964 CP77 Exhaust leaks

Post by Fastwater » Tue Jul 01, 2008 9:03 pm

Hey All,
I recently purchased some repro pipes with new copper gaskets and packing. I am extremely happy with the quality and fit of the pipes. After I installed them I noticed that there was a little exhaust leakage from around the new rubber gaskets and a knocking sound while decelerating. Is any leak normal and is it causing the slight putter sound? Thanks for the help.

allthumbs Member
Posts: 131
Joined: Tue May 06, 2008 7:33 am
Location: Beacon, NY

Post by allthumbs » Sun Aug 03, 2008 9:36 pm

I've had the same sound for a while now. I have aftermarket pipes that are not air tight around the connections to the headers. some of the folks who know such things here swear its the air screw/idle screw combo on the carbs that is the prob. i keep playing around to find the right setting, no luck. I'm beginning to think that I need to rejet the carbs for the pipes, which are very unlike stock. I'm going to break down the carbs and do it at the end of fall if i can't get it figured out. maybe buy new mufflers

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