• Required reading for all forum users!!!

    Welcome!
    Register to access the full functionality of the GSResources forum. Until you register and activate your account you will not have full forum access, nor will you be able to post or reply to messages.

    A note to new registrants...
    All new forum registrations must be activated via email before you have full access to the forum.

    A Special Note about Email accounts!
    DO NOT SIGN UP USING hotmail, outlook, gmx, sbcglobal, att, bellsouth or email.com. They delete our forum signup emails.

    A note to old forum members...
    I receive numerous requests from people who can no longer log in because their accounts were deleted. As mentioned in the forum FAQ, user accounts are deleted if you haven't logged in for the past 6 months. If you can't log in, then create a new forum account. If you don't get an error message, then check your email account for an activation message. If you get a message stating that the email address is already in use, then your account still exists so follow the instructions in the forum FAQ for resetting your password.

    Have you forgotten your password or have a new email address? Then read the forum FAQ for details on how to reset it.

    Any email requests for "can't log in anymore" problems or "lost my password" problems will be deleted. Read the forum FAQ and follow the instructions there - that's what we have one for...

  • Returning Visitors

    If you are a returning visitor who never received your confirmation email, then odds are your email provider is blockinig emails from our server. The only thing that can be done to get around this is you will have to try creating another forum account using an email address from another domain.

    If you are a returning visitor to the forum and can't log in using your old forum name and password but used to be able to then chances are your account is deleted. Purges of the databases are done regularly. You will have to create a new forum account and you should be all set.

Valve clearence

tlg1100

tlg1100

Forum Mentor
Just wondering If tight valve clearence would possibly be tapping sound I hear on take off.Been trying to find out source of noise for a while,thought It might have been timing or fuel mixture,but have checked that out.the Guy that put it together said the valve had to be set tight because of after market cams.I can hardly get .001 feeler gauge in gap 81 gs 11000. it only makes that sound on moderate to hard throttle if you know what i mean?????
 
tlg1100 said:
Just wondering If tight valve clearence would possibly be tapping sound I hear on take off.Been trying to find out source of noise for a while,thought It might have been timing or fuel mixture,but have checked that out.the Guy that put it together said the valve had to be set tight because of after market cams.I can hardly get .001 feeler gauge in gap 81 gs 11000. it only makes that sound on moderate to hard throttle if you know what i mean?????
Click to expand...

My understanding is that aftermarket cams will make more noise than stock cams. Of more importance I think is our comment about "hardly get .001 feeler gauge in gap". This throws a red flag since the clearance should be far more than that I think. I suggest some more research on this matter.
 
Aftermarket cams run pretty much the same clernce as stock. Rockers and guides have to be modified with some of the higher lift cams. What cams and what do you know about the work the guy did? .001 is too tight and the valves probably aren't seating right with a hot engine.
 
You don't have enough clearance! Figure out what cams you have & then research cam manufacturers web sites for the correct clearance specs on your cams. Aftermarket cams USUALLY use a little bit more clearance than stock cams. Ray.
 
I would not even run that engine with valves set to .001. Thats FAR too tight for an air cooled 1100.

Earl
 
First, Like everyone else said Adjust the valves properly.
The noise you describe could be pinging (detonation).
 
You must log in or register to reply here.
Back
Top