• 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.

Cam timing off?

  • Thread starter Thread starter bubba zanetti
  • Start date Start date
B

bubba zanetti

Guest
Howdy GSR's!
I've gotten a lot of help from this site in the past (especially the Carb Cleanup). I've tried searching different threads concerning my new questions but have not found much, so if someone knows of a good link to a thread please let me know. Anyhoo, I think my cams may have jumped a tooth on the sprockets and i'm wondering how to get the cams properly timed again.

It all started when I was about to do a valve clearance adjustment on my 1980 GS750e. When i crank the crankshaft, by hand, into the TDC 1.4 position the notches on the end of the camshafts do not align to point straight in or straight out, they are just a bit askew. Also the #3 and #2 marks are not pointing straight up, they point ever so slightly to the left. Counting the links on the camchain between the #3 and #2 marks I do come up with the correct 20 links.

Alternately, if I crank the crankshaft into a position where the camshaft notches and number marks line up to where they should, then the timing marks at the ignition pickup do not line up where they should.

So any suggestions? looking through my manuals I don't see any obvious instructions on getting everything timed right or how to make adjustments, am i missing something?

P.S. the bike starts ok (i think it could start easier) and runs really good with only a slight hesitation when starting from a stop.

thanks for any input!

*dave
 
Move the crank to align 1-4 T with the indicator and then check where the -1 mark on the exhaust cam sprocket points - it should be level with the cam cover surface. This is the proper way to judge timing, not with the notches.
 
Thank you much! I just finished getting the cams timed correctly. They were both off by one tooth. The old gal should be running great soon!

*dave
 
Once you get everything set, make sure that the cam chain tensioner is putting tension against the chain before you try to rotate the engine otherwise everything will move out of adjustment.

I had a problem setting up an 8v engine before, couldn't get everything lined up. I was off by a tooth and could figure out why. Somehow I managed to bump the crank(must have brushed against it) just enough to move it off the 1-4 alignment mark. Once I moved the crank to the correct position everything just fell into place.
 
I can't think of too many things so satisfiying as completing a job on a motorcycle and being rewarded immediately with a perfectly running bike! Woo Hoo!! Thanks!
 
You must log in or register to reply here.
Back
Top