Cafe Racer Forum banner
Cancel

new top end squeek

735 Views 4 Replies 4 Participants Last post by  texmawby, 
B
just got the new top end on and im breaking her in. the only thing i noticed was a sharp squeek when the bike is idling and when i let off the throttle. the sound is only for a split second and goes away. it scared the bejesus out of me so i shut it off immediately. i made sure that the piston rings where in the correct place and that the piston/cylinder was well lubed. i also made sure to manually move the piston up and down the cylinder before puting the heads back on. there was no scratching noise there so this is why im worried. any ideas? im going to take the heads off and check the piston and cylinder again then retorque the heads on.

cheers
hely

74 Yamaha RD350 cafe
Reply
Save
Like
1 - 1 of 5 Posts
K
Hely,
I seen to remember years ago with my brother's RD400 that it made that same kind of noise and it was a leaking head gasket. I think a careful check of the gaskets and a retorquing ought to do it.
Ken

AHRMA 412
Vintage racing - old guys on old bikes
Reply
Save
Like
1 - 1 of 5 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Cafe Racer Forum
A forum community dedicated to Cafe Racer style race bikes owners and enthusiasts. Come join the discussion about restoration, performance, racing, classifieds, troubleshooting, maintenance, and more!
Full Forum Listing
Explore Our Forums
General Bike Discussions Project Builds Technical Vintage Motorcycle Racing New Member Introductions
Top