• 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 adjustment gurus!!!!

  • Thread starter Thread starter nisom512
  • Start date Start date
N

nisom512

Guest
I need your help i I got up today and am trying to adjust my valves so I grab my computer and open basscliffs document on 16v adjustments and I was good to go but one "little" problem I have a completely different set up than the bike in his document so if any body knows how to do a valve adjustment on a 81 GS550t please help.

I will try to put a picture up as soon as I can.

http://s117.photobucket.com/albums/o67/hot_wax_tree/GS550/?action=view&current=P6020120.jpg
GS550
 
Last edited:
wait wait wait So i need to take of my cam shafts to adjust my valves? wont the timeing get off?
 
Go to the link that I posted for 8-valve adjustment. That, along with your manual (you DO have a manual, don't you?) will get you through just fine.

.
 
i cont figure out what a lobe or a shim is....I am so dumb
Nope no manual...
 
also how do I measure the clearance with my feeler guages?
 
Reead the instructions for an 8 valve motor.
Look at your cams.
Read it again.
Look at your cams, cam lobes (the shiny metal part that touches the shims) shims (the flat round things under the cam lobes).

Understand how it works.

Follow the procedure. It's really simple once you understand it. Take your time.
 
what is the valve clearance needed for my 550 I looked for it in sevice manual on basscliffs web site but I cant find it.
 
Yeah I just got your email. I will try to work it but I dont know how to yet.
 
nisom512 said:
what is the valve clearance needed for my 550 I looked for it in sevice manual on basscliffs web site but I cant find it.
Click to expand...
Look on page 80 of the pdf manual. The actual page number in the book is 75, but the pdf counts the cover and the disclaimer and all that other stuff, so look on pdf page 80.

By the way, the clearance is the same as most of the other 8-valve motors.

BE CAREFUL when measuring to make sure you are using the right numbers.
If you use METRIC feeler gauges, the clearance should be 0.03-0.08 mm.
If you use INCH feeler gauges, the clearance should be 0.001-0.003 in.

Notice how there is a "3" in both measurements? One is a maximum, the other is a minimum, so you want to be SURE to keep them straight. The spreadsheet I just sent you will help you keep track of that much easier.

.
 
This is a valve shim:

0591335-1.jpg


It is exactly 29.5mm in diameter. The notation on the above part says 3-55. This means that it is 3.55mm thick. These shims go under the cam lobes (the egg shaped parts of the cam shaft, round on one side and a little more pointed on the other). The shims rest in "buckets" under the cam lobes. To replace them you must use the tappet tool (I have no problems with it) or the "Zip Tie Method" to hold your valves open so that you can grab the shims with tweezers and pull them out. Adjust your valve clearences (the space between the bottom of the cam lobe and the top of the shim) to between .03mm and .08mm (on the looser end of the range is generally better). Use this valve adjustment pictorial as a guide but always refer to your manual. I'll update the name of the link to reflect that it's the procedure for the 8-valve GS motor. Keep us informed.

Thank you for your indulgence,

BassCliff
 
yeah steve gave me an excel file to work from to get the right sizes of shim at the store I believe that is what it's for. I am just working with it now and got the shims off I just wasnt using common sense today.
 
does anyone live near this guy???

it would be way easier if someone could spend an hour with him and walk him through this stuff once...

once you learn it it never goes away
 
I would also like to remind everyone reading this thread,

Do Not Turn Your Motor With The Shims Removed! You can damage your cam lobes.

Thank you for your indulgence,

BassCliff
 
Last edited:
Cliff, where'd you find a 3.55mm shim???

Biggest I have is 2.80.
 
You must log in or register to reply here.
Back
Top