Adding shims?
#1
Adding shims?
When you raise to a higher nitro percentage do add or remove head shims?
#3
359 tuned that is drag modded.moving up to 40 or maybe even 55%
#4
Possibly two silver shims and one copper shim. I may be incorrect. Hopefully someone will come in and provide more 411. Goodluck.
#5
Add shim
#6
Tech Adept
If you are using this engine for drag racing you definatly will not want to add shims!!! A good starting point depending on weather is to run 18 thou piston to head clearance on 50% nitro, but remember this is for drag racing only not circuit racing!!
#7
.21 head shim
So what's the rule for adding or taking away shims? And how does moving from one elevation to another come into play?
Particularly 1/8 on road engine.
Particularly 1/8 on road engine.