noisy valvetrain -- normal?
R.I.P. BROTHER
Joined: Dec 2008
Posts: 3,076
Likes: 6
From: Colorado Springs
Like the above stated...High lift cam = Noisy.
But you do need to be aware of the detonation issues associated with a high compression build. Do not whack the throttle wide open at 1800 RPM. No good. That motor will want to destroy itself until its spinning at about 2300 RPM.
At 10:5-1 my motor is evil when the throttle is whacked below 2000 RPM. Its not a good sound and should be avoided at all costs.
You want to roll into the throttle until you have actual foward movement or get the RPM's up and slip the clutch out. Dont put a heavy load or whack the throttle suddenly on the thing under 2,500 RPM's!!
Read:http://www.americanrider.com/output.cfm?id=1021915
But you do need to be aware of the detonation issues associated with a high compression build. Do not whack the throttle wide open at 1800 RPM. No good. That motor will want to destroy itself until its spinning at about 2300 RPM.
At 10:5-1 my motor is evil when the throttle is whacked below 2000 RPM. Its not a good sound and should be avoided at all costs.
You want to roll into the throttle until you have actual foward movement or get the RPM's up and slip the clutch out. Dont put a heavy load or whack the throttle suddenly on the thing under 2,500 RPM's!!
Read:http://www.americanrider.com/output.cfm?id=1021915
The good news is I hear nothing like detonation, even opening the throttle *slightly* at low rpm in high gear. Just valvetrain chunk, chunk, then all smooths out around 2K.
Glad to know my Twin Cam has a healthy personality. Time to move on to the Good Stuff
R.I.P. BROTHER
Joined: Dec 2008
Posts: 3,076
Likes: 6
From: Colorado Springs
Just valvetrain chunk, chunk, then all smooths out around 2K.
Mine has chunked since the day I had the comp bumped and the heads worked.
I'm glad you understand about keeping the rpm's up a tad. I'm either spinning my motor at over 2K or rolling with clutch in.
Road Captain
Joined: Apr 2008
Posts: 533
Likes: 2
From: Eugene, OR
The mech that built my 103 said make sure I keep it revved. The pistons stay lubed much better at higher rpm, so I can't use 6th gear till 70mph. I too am constantly trying to figure out what my motor is trying to tell me. Most of the time it's probably just a bunch of hot air.
Thread
Thread Starter
Forum
Replies
Last Post
TXcruzin
2014-2024 Touring Models
26
Feb 22, 2016 07:09 AM
