headsbikesmopars
Forum Mentor
Do all the 8 valve motors use the same size of shims ? Will they physically interchange with the different size engines, 550, 750 1000 ?? Thanks for any insight you can lend.
Terry
Terry
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Valve shim ?
- Thread starter headsbikesmopars
- Start date
M
mike_of_bbg
Guest
Yes, 29.5mm for all of the 8V motors.
headsbikesmopars
Forum Mentor
Thank you Mike, just what I wanted to know. My GS550 is my first shim over bucket 8 valve engine. All of my other GS's are 16 valve engines with valve adjusters, which I find MUCH easier.
Terry
Terry
T
TheCafeKid
Guest
Terry
Once you get it down, the shim overs are no faster, and IMO you dont have to fiddle around like you do with the adjusters making sure they're JUST RIGHT. In the end, Id say they take about the same amount of time.
Once you get it down, the shim overs are no faster, and IMO you dont have to fiddle around like you do with the adjusters making sure they're JUST RIGHT. In the end, Id say they take about the same amount of time.
M
mike_of_bbg
Guest
Please note that its 29.5mm, NOT the more plentiful and cheaper 29mm (those are Kawasaki I think). Z1 Enterprises sells 29.5mm shims for about $5 each, and you can search for "shim club" on the forums - you may be able to exchange your largest shims for little to no cost.
Yeah, it's really not that bad. The worst part about shims is waiting for your new ones
You might want to borrow a metric micrometer if you don't have one because invariably some of the printed sizes get worn off. Once you have all of your current shims cataloged and your gaps measured, you can have the shims you'll likely need ordered before your next adjustment.
Although some people seem to prefer the zip-tie method (and not just to be cheap), I think that $12 motion pro shim tool is a very worthwhile investment. No worries about turning the cam without a shim in the bucket (something you do NOT want to do!), and most of the shims change in just a few seconds.
Best of luck to ya, get that 550 running and we'll race
Oh, and I have a couple of 2.72s and a 2.76 (measured) if you're lucky enough to still need shims that thick!
Yeah, it's really not that bad. The worst part about shims is waiting for your new ones
You might want to borrow a metric micrometer if you don't have one because invariably some of the printed sizes get worn off. Once you have all of your current shims cataloged and your gaps measured, you can have the shims you'll likely need ordered before your next adjustment.Although some people seem to prefer the zip-tie method (and not just to be cheap), I think that $12 motion pro shim tool is a very worthwhile investment. No worries about turning the cam without a shim in the bucket (something you do NOT want to do!), and most of the shims change in just a few seconds.
Best of luck to ya, get that 550 running and we'll race
Oh, and I have a couple of 2.72s and a 2.76 (measured) if you're lucky enough to still need shims that thick!
T
TheCafeKid
Guest
Mike, Terry here is a builder...I dont think you want to race him..if he's been playing with that head, on that bike, chances are you wont see him till he stopsPlease note that its 29.5mm, NOT the more plentiful and cheaper 29mm (those are Kawasaki I think). Z1 Enterprises sells 29.5mm shims for about $5 each, and you can search for "shim club" on the forums - you may be able to exchange your largest shims for little to no cost.
Yeah, it's really not that bad. The worst part about shims is waiting for your new ones
Although some people seem to prefer the zip-tie method (and not just to be cheap), I think that $12 motion pro shim tool is a very worthwhile investment. No worries about turning the cam without a shim in the bucket (something you do NOT want to do!), and most of the shims change in just a few seconds.
Best of luck to ya, get that 550 running and we'll race
M
mike_of_bbg
Guest
'twas just a joke. I have three kids - I race at the speed limit!
Steve
GS Whisperer
Which one? :-k
My personal favorite is:
"3.0 * 10+8. It's not just a good idea, IT'S THE LAW!"
.
T
TheCafeKid
Guest
What?? WTF is that?? By the time ive done the math on this little gem, ive already forgotten wtf we're talking about
G
Guest
Guest
Oh snap Here we go. :-#
M
mike_of_bbg
Guest
The faster you drive, the less you age :dancing:
That explains my gray hair...
That explains my gray hair...
Steve
GS Whisperer
G
Guest
Guest
I'd hate to see his Google search history.
Steve
GS Whisperer
G
Guest
Guest
Come to think of it either but I was referring to Jim's. :-$
