Valve Shims???

[GS1166]

Hello all,
I'm curious if I'm better off buying new valve shims or used ones. I have a gs1100 that use the 29.5mm valve shims. What do you think? Im looking for 2.55 to around 2.70mm
Thanks

[Nessism]

Z1 Enterprises has what you need... http://www.z1enterprises.com/catalog...1000C-1978-EN1

[GS1166]

What do you think about used ones? Ebay?

[peterpressure]

I cannot see why used ones would not be ok unless they are warped.

I recently bought a Vernier Gauge off ebay for something like $10, so it is not an expensive item. Just use one to measure shims. I hear sometimes it is good to find some shims that are actuallly in between sizes for finer tuning.

[Nessism]

What do you think about used ones? Ebay?

Why?

[GS1166]

I saw a couple of auctions with a lot of shims that are pretty cheap.

[djscottymiami]

Don't risk it. Buy new that way you know what kind of condition that they are in when you put them into your motor.

[BassCliff]

Hee Haw Howdy!

Hi Mr. GS1166,

I've got a few used shims in my motor right now. Be sure you have a caliper (vernier) in case the numbers have been worn off.

I called a local bike wrecker to see if they sold used shims. They did, for $10 each! So when I have to buy a shim I get them new from Z1Enterprises for $4.75 each.

Now that I know what shims I have and I'm keeping track of my clearances (thanks to Mr. Steve's spreadsheet) I can "guess-timate" what shims I might need for future valve adjustments and order two or three ahead of time.

Thank you for your indulgence,

BassCliff

[BassCliff]

Hee Haw Howdy!

Oh! I almost forgot your mega-welcome! \\/

Dear fellow GS rider,

Let it be known that on this day you are cordially and formally welcomed to the GSR Forum as a Junior Member in good standing with all the rights and privileges thereof. Further let it be known that your good standing can be improved with pictures (not you, your bike)!

Perhaps you've already seen these, but I like to remind all the new members. In addition to the carb rebuild series, I recommend visiting the In The Garage section via the GSR Homepage and check out the Stator Papers. There's also a lot of great information in the Old Q&A section. I have some documentation on my little BikeCliff website to help get you familiar with doing routine maintenance tasks (note that it is 850G-specific but many tasks are common to all GS bikes). Other "user contributed" informational sites include those of Mr. bwringer, Mr. tfb and Mr. robertbarr. And if your bike uses shims for valve adjustments, send an email to Mr. Steve requesting a copy of his Excel spreadsheet that helps you keep track of clearances, shim sizes and other service work.

These are some edited quotes from one of our dear beloved gurus, Mr. bwringer, with ideas on basic needs (depending on initial condition), parts, and accessories.
***********Quoted from Mr. bwringer************
Carburetor maintenance:

Replace the intake boot o-rings, and possibly the intake boots. Here's the procedure:

http://bwringer.com/gs/intakeorings.html

Here's an overview of what happens with this particular problem:

http://cycleorings.com/intake.html

You'll also want to examine the boots between the carbs and the airbox. There's a good chance these are OK, but check them over.
And finally, if things still aren't exactly right, you'll want to order a set of o-rings for BS carbs from the GS owner's best friend, Robert Barr:
http://cycleorings.com
Once you receive these rare rings of delight, then you'll want to thoroughly clean and rebuild your carburetors. Here are step-by-step instructions that make this simple:

http://thegsresources.com/gs_carbrebuild.htm

***********************************
Every GS850 has (or had) a set of well-known issues that MUST be addressed before you have a solid baseline for further troubleshooting. It's a vintage bike, and it's quite common (as in, every single GS850 I have had contact with) that there are multiple problems that have crept up and slowly gotten worse over the years. It's not like a newer vehicle, where there's generally one problem at a time.

These common issues are:

1. Intake O-rings (install NEW OEM or Viton only - common nitrile O-rings will quickly deteriorate from heat)
2. Intake Boots (install NEW -- these cannot be repaired)
3. Valve clearances (more important than most people think)
4. Carb/airbox boots
5. Airbox sealing
6. Air filter sealing
7. Petcock (install a NEW one)
8. On '79 models, install new points or Dyna electronic ignition (or at least verify that the old points are working correctly)
9. On all models, it's fairly common to have problems with the spark plug caps. These are $3 or $4 each, and often worth replacing if you're keeping the stock coils/wires.
10. Stock exhaust with NO leaks or holes -- good seals at the head and at the junctions underneath.
***************************************
OEM Parts/Online Fiches:

I would definitely double and triple the recommendations to use Cycle Recycle II and Z1 Enterprises as much as possible. These guys are priceless resources. Z1 tends to have slightly better prices, CRC2 has a wider range of goodies available. If you're near Indy and can bring in an old part to match, CRC2 has a vast inventory of used parts.
http://denniskirk.com - Put in your bike model and see what they have.
http://oldbikebarn.com - seems to be slowly regaining a decent reputation, but it's still caveat emptor. They don't have anything you can't get elsewhere at a better price anyway.
http://www.babbittsonline.com/ - Decent parts prices. Spendy shipping. Don't give you part numbers at all. Useful cross-reference if you obtain a part number elsewhere. Efficient service.
http://bikebandit.com - Fastest. Middlin' prices. Uses their own parts numbering system to obfuscate price comparisons -- can be very confusing for large orders. Cheapest shipping, so total cost usually isn't too bad.
http://flatoutmotorcycles.com - Slow. Cheapest parts prices, crazy shipping costs. Don't expect progress updates or much communication. Real Suzuki part numbers.
http://alpha-sports.com - Exorbitant parts prices. Different type of fiche interface that's quite useful at times, especially with superceded part numbers. Real parts numbers. Shipping cost and speed unknown due to insane, unholy pricing.

Stainless Bolts, Viton o-rings, metric taps, dies, assorted hard-to-find supplies and materials, etc:

http://mcmaster.com - Fast, cheap shipping, good prices. No order minimum, but many items like bolts come in packs of 25 or 50. Excellent resource.
http://motorcycleseatcovers.com - Great quality, perfect fit (on original seat foam), and available for pretty much every bike ever made. Avoid the textured vinyl -- it's perforated.
http://newenough.com - You DO have riding gear, don't you? Great clearances, always outstanding prices and impeccable service.
***************End Quote**********************
Additional parts/info links:

GSR Forum member Mr. duaneage has great used upgraded Honda regulator/rectifiers for our bikes. Send him a PM.
New electrical parts:
http://stores.ebay.com/RMSTATOR or http://www.rmstator.com/

http://www.ricksmotorsportelectrics.com/index.php

http://www.electrosport.com/

For valve cover and breather cover gaskets, I recommend Real Gaskets (reusable silicon):
http://www.realgaskets.com
The Rice Paddy (salvage/used)
http://www.ricepaddymotorcycles.com
Carolina Cycle
http://www.carolinacycle.com
Ron Ayers Motorsports
http://www.ronayers.com
MR Cycles
http://www.mrcycles.com
Moto Grid
http://www.motogrid.com
If all else fails, try this:
http://www.used-motorcycle-parts.org/
Used bike buying checklists:

http://www.amadirectlink.com/roadride/Riderresc/checklist.asp

http://www.clarity.net/~adam/buying-bike.html
Lots of good info/pictures here:
http://www.suzukicycles.org

http://www.cyclechaos.com/wiki/Motorcycle_Wiki

Thanks for joining us. Keep us informed of your progress. There's lots of good folk with good experience here.

Thank you for your indulgence,

BassCliff
(The unofficial GSR greeter)

[mcloud]

You can also check http://www.thegsresources.com/_forum...d.php?t=122394

[SqDancerLynn1]

99% of the time used shims are fine !!! A good digital calaper is a must
shop around and you can get one for $25-30. Look for one with a tail so to speak- a rod that extends from the end. Usefull for setting the carb floats

[TheCafeKid]

I have, well actually at the moment, Steve has, a decent collection of shims that ive aquired thru various means, either new, or contained in heads that ive bought, or ones that ive pulled from this bike or that. I keep them all. And EVERY one that ive measured still read as the marking indicated, within a thousandth plus or minus. I see NO problem in using "used" shims. And yes, "X" shims are a somewhat prized possesion. Especially to tuner nuts who like their clearances to be the same across the board. Steve lucked into a BUNCH of X shims out of some heads he has for his sons 850 project, certainly nice to have when youre inbetween sizes.

[GS1166]

Great info...Thanks:-D

[hikermikem]

99% of the time used shims are fine !!! A good digital calaper is a must
shop around and you can get one for $25-30.

I found a stock shim in my 650GZ that was marked 2.55, but actually measured 2.60. Very good idea to verify all your shim thicknesses.

[lurch12_2000]

My 2 cents...used shims should be ok, just look them over for abnormal wear or cracks. Don't assume they are the size stamped. I don't have a caliper to measure the shims but when I replaced shims, I measure the valve clearance anyway to doublecheck going down a size or two did what I thought it would do. And Z1Enterprises is pretty cheap at $4.75 a shim. At the price of gas today why drive around to salvage yards or dealers to hunt down one or two shims? I got 4 shims from Z1 for the last adjustment, but have since swapped(and given away) some shims with other forum users for future adjustments.