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Picked up 2 1982 GS1100's. Running issues

  • Thread starter Thread starter irishluck
  • Start date Start date
No problem. 1982. The service manual I have for this says gs1100G. I have the round chrome caps on the ends.
The manual says it needs to be between 0.03-0.08 and the smallest feeler gauge I have is 0.038 which wont fit under any.
 
Last edited:
To update some other post I read, the bike is in a cold garage and I'm in KCMO.
The bike is not a 16v. And I cant pull shims out yet until I receive my tool which will be next week =/

I will end up doing a full shim job to get this job done properly. I've got about a month and a half to get this bike fully running as riding season is on its way!
 
Great. You might want to pick up a thin shim. Something in the order of 2.4mm to use as a base to see what size shim is going to be needed on the really tight valves. Since you can't get a feeler gauge in there you can't tell how much thinner you need to go. You could guess and say to sizes down, but it would only be a guess. By using the thin shim you'll have some extra space to measure the gap and calculate what will be needed to get it in spec. It will also allow you to shuffle the shims around by giving you a shim to put in place while you rotate the cams around. Once you've gone through and inventoried all your shims, you'll be able to determine which shims can be moved to another location and which shims will need to be purchased. If you don't already have one, you might want to consider picking up an inexpensive set of digital calipers. Harbor Freight sells them for cheap. If anyone placed the shim upside down or the shim markings can't be read, you'll have a way to identify what the shim thickness is.

If you plan on riding a GS for any period of time, these are essential tools and will be used for years to come.
 
Well for the plans I have for this bike, I plan on keeping it for a while. Plan on doing a full custom job on the bike.

I already have a list of parts put together with my supplier that is going to be ordered to do a complete tuneup on the bike as well.
Im rebuilding or replacing the petcock, steering bearing, fork seals, handlebars, pod filters, shocks and all the oils and fuel line.

Ill try and get some of the 2.4mm shims. But when I start changing out the shims where is the ideal spot I want to be in?
Book says between 0.03mm to 0.08mm. Do i want to try and be at 0.05mm? or 0.06mm?

Oh and I have 2 calipers already so Im good to go there!
 
Err on the looser side. Another words closer to the .08mm mark. Many on here will go as loose as .1mm. Engines sound a little like a clickity sewing machine but run better and longer that way.
 
Alright. Once the tool gets here Ill get them off an measuring them.
 
alright so I got my tool in the mail today and measured all the shims. Took one out at a time and put them back in.

Intake

cyl 4----------cyl 3----------cyl 2-----------cyl 1
2.60mm------2.57mm------2.62mm--------2.56mm


exhaust
cyl 4----------cyl 3-----------cyl 2----------cyl 1
2.62mm------2.69mm-------2.72mm------2.74mm




SO there all in between 2.56mm-2.74mm
And I cant get the 0.038mm feeler gauge between the shim and roller.

What sizes would you recommend for this now?
 
I take it that those are measurement numbers and not the numbers stamped on the shim. Keep in mind that shims usually come in .05mm increments. There are some oddball + sizes that are in between. If you measurements are accurate then I'd start by moving some of the intake shims over to the exhaust side. Another words moving a 2.60 shim in place of the 2.7 locations and see what the gap is at that point. You'll probably going to have to buy some 2.50 or even 2.45 shims for the intake side but you may get lucky and be able to do most of the exhaust with what's in the intake. cylinder 1 exhaust may even be replaced by cylinder 3 or 2 exhaust. Just depends on how much gap you actually have.
 
okay then what do i put in place of the shims I'm going to remove? you guys said not to turn in without a shim or a dollar coin. I don't have any dollar coins
 
I got some $1 coins finally and got to move some shims around and this is what I got.

Exhaust
cyl 4-----------------------cyl 3----------------------------cyl 2--------------------------cyl 1
.076mm fits---------------.076mm fits--------------------.076mm fits------------------.076mm fits
.102mm fits---------------.102mm doesnt fit-------------.102mm doesnt fit-----------.102mm fits

The intake side I have no shim that are working. I have a 2.65mm, 2.70mm, 2.70mm and a 2.55mm.

The 2.55mm wont even allow my .038mm feeler guage fit between them on the intake side.
 
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