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GS Valve Shim Club

  • Thread starter Thread starter Guest
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Hello everyone! I am new to the site and new with my 82 GS 1100. My intake shims range from 2.65 to 2.74, I have .025" clearance for them, way off. I have 2.46 to 2.62 shim for the exhaust valves. Which is not allowing my smallest gauge (.006") to not slide beneath. Does anyone want to trade shims?
 
Hey guys. I have 78 GS750. My shims are super tight after my engine rebuild. 2 out of eight are good, however I will be needing a couple 2.45s or smaller. Do you know if they come smaller than this? My smallest feeler gauge has 0 clearance even at 2.5. Any help is appreciated. i have plenty of 2.5-2.75 sizes.
Thanks
 
What's the process for the shim swap? I need 4 (2.60) and 1(2.70). I have 5 shims ready to exchange. Cool service by the way. Thanks.
 
jdion81 said:
Ok, I'm a newb, what do the sizes with x at the end mean?
Click to expand...

If your size is 2.65x, the shim will likely measure right around 2.675 mm, which is half-way between 2.65 and 2.70.

Because the normal increment in shim size will take you from one extreme of the range to the other, you can use the "X" shims to take you just half-way through the range.

Did you notice the instructions in the spreadsheet how to enter the "X" values? Just for consistency, since the spreadsheet rounds to just two decimal places, add 0.02 to the number and enter a 2.60x as 2.62, and a 2.65x as 2.67. Doing it that way, as you look through your shim sizes, you will only see 0, 2, 5 and 7 at the end of your shim sizes, making it easy to tell whether they are 'full' shims or "X" shims.

.
 
I never put blind "trust" in any of them. I use digital dial calipers and recheck several times after rezeroing the calipers. That way I am dead certain of exactly how thick they are before installation.
 
I check them as well, but don't worry too much about that "last-digit accuracy". :-k

There is a reason that there is a relatively wide range for the clearance, that last digit doesn't really matter.
As long as you are in the range. :encouragement:

.
 
Hi, I am currently a "Hall of Shame" member of the shim club. The thing is, though I only used it once, I really appreciate this service, and would like to clear my name.

I used it when I was rebuilding my top end years ago, and then ended up moving to another city. In the process of the move, I unfortunately neglected to return the borrowed shims. I apologize profusely. At this point I have an assortment of shims which include many I have bought since this time. I do not know which of them, nor how many of them I had originally borrowed.

Is it possible I can send a check to cover the shims which I did not return, and is there any record of how many shims I originally recieved? If so, how much could I send per shim to cover the cost of them?

I would like to apologize again, I do appreciate this service, and the hard work it must take to maintain the service. I never intended to take advantage of it!

Sincerely, Rippledub
 
Thanks Steve, but, uh . . . please excuse my forum inexperience, but, who is Ray, and how do I contact him?
 
Big thanks to Ray and Steve (along with everyone on this thread who have contributed valuable information) for the help in getting my valve adjustment journey started. My '81 GS850 is the first motorcycle I've ever owned, so I am learning all of these things as I go. This forum, and all of its contributing members are much appreciated!
 
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