Originally Posted by
Mathiew
Thanks Rageworks
i've recieve my GO GX-5R from factory with all these shims install on the engines:
1 x 0.3mm silver shim
1 x 0.2mm copper shim
1 x 0.15mm copper shim
1 x 0.1mm copper shim
For a total of 0.75mm shim.
BUT, with the engine i've recieve a spare shim, i've install it for break-in, but i can't remember wich one of all these shims i've install
I'am to my tank #7 of break-in and i want to know if i MUST leave it like that once the break-in will be finish, or should i remove one of these shim.
Thank you!
Hi Mathiew,
What you should have standard in your motor is -
1 x .3mm Alloy shim
2 x .1mm copper shims
That gives you .5 mm total shims, plus you have .3 mm built into the head button, for a total clearance of .8mm.
You fit the .2mm copper shim for run in. Leave this in for a few litres until you can just turn the motor over with your thumb in the buggy when it's hot.
Once you can do this, remove the .2mm shim if your running 25%. If you are running 30% leave the .2mm shim in.
Hope this clears things up. Check out
www.go-racing.co.nz (Tech Tips page) for run-in tips. If your in the US you will have a short needle carb, so the tuning tips for the long needle carb on this page will not necessarily apply to your motor. However the basic - set idle gap, tune in lsn, then tune in hsn, then re visit lsn method works for all motors.
