• 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 shims

  • Thread starter Thread starter workonwood
  • Start date Start date
W

workonwood

Guest
Hey guys, Quick question, Checking my valve clearances and wondering if it is O.K. to remove all the shims? Can I install two shims and turn the motor over with out hurting anything? Will the clearances be the same with just two shims in Versus all of them? Thanks.
 
You can use quarters in place of the shims. It's really bad to rotate the crank without a shim on the bucket. Damaged cam lobe will result.
 
Perfect, I need to swap four shims and my exhaust will be good, tomorrow I am going to the dealer to get the rest of the shims. Thanks!!!
 
First, measure your clearances, but be sure to follow the factory procedure for positioning the cams. Yes, it's important. Strike that, it's CRITICAL.

After recording your clearancesRemove your shims ONE AT A TIME. Record the size, put it back in place, move to the next one. When you have all your sizes recorded, take the thinnest one out, put a quarter in its place. Move that shim to other places that did not have enough clearance to see if that thinner size shim is enough of a change. If that shim is too thin, you will merely measure some extra clearance, then it's easy to figure out what size shim you need. If the clearance is still too small, you will at least know that you need something smaller than that shim, rather than the shim that was in there.
For a handy calculator that will help you figure out what shim you need, take a look at the offer in my signature.

.
 
Just moved the thinest one..math all added up!! Thanks again.
 
This is where Iam at. Any advise?

Exhaust #1 2.75 shim .08mm #2 2.70 shim .11mm #3 2.65 shim .11mm #4 2.70 shim .11mm


Intake #1 2.60 shim .09mm #2 2.65 Shim .08mm #3 need a 2.55 #4 2.65 shim .09mm


To big of a clearance? Should I go with 2.65 and 2.60 on the exhaust? I have read that a litte big is better.
 
Last edited:
Exhaust 1 is good but I'd be concerned about the other exhaust valves. 0.011mm is too tight unless you mean 0.11mm. If they are the smaller you wrote, I'd definitely go down to 260 and 265. Some folks may even recommend going down 2 sizes on those 3 valves.
 
Yes .11mm my bad. What I dont under stand is #3 exhaust started at 2.80 and .002 I have a 2.65 now and .11mm I will put a 2.70 in and see where Iam at.
 
workonwood said:
Yes .11mm my bad. What I dont under stand is #3 exhaust started at 2.80 and .002 I have a 2.65 now and .11mm I will put a 2.70 in and see where Iam at.
Click to expand...

Is .002 an inch measurement? That's .05mm.

If you meant .02mm, I don't believe feeler gauges exist that thin.



It's fine to go to .09mm and .11mm. Don't close these up. These are TINY TINY clearances compared to most motorcycles and cars, and a teensy bit extra won't hurt a thing. No one is really quite sure why Suzuki specified such itsy bitsy valve clearances.

Just for perspective the KLR650 uses a nearly identical shim-over-bucket system and the proper valve clearances are .10mm - .20mm intake, .15mm to .25mm exhaust.


It's not clear to me what's going on with #3 intake. What was the actual clearance where you put "#3 need a 2.55"?
 
Smallest gauge I have is 0.04mm and it would not fit in all but #1 exhaust. #3 had a 2.60 with smaller than 0.04mm measurement. I will run them like this and put a 2.55 in #3.
 
You must log in or register to reply here.
Back
Top