ninja jx .21
 

I have a ninja jx.21 BO1A that am just now starting to finish up breaking it in and was wondering if it would be a good idea to put in the extra shim it came with. I am running byrons gen2 33% nitro 16% lubricant.
Also this is my first ninja so any tips and such would be appreciated.
Thanks.

also I have the dynamite 053 pipe and live at high altitude if that affects anything..

1 copper 1 silver.

You should be fine with stock shimming. No need for an extra shim.

Since u guys r talking about it I minuswell ask, I lost my silver shim yesterday when I was cleaning the engine out and I just put it together like it was till I was able to ask what would happen if I just ran it with the copper shim? The engine has 7 gallons on it btw.

DON'T DO IT!!!! you engine will be a paper weight after 2 tanks. o.s. motors are very popular. You should no have a problem finding the aluminum shim for a vspec/speed/ninja.

but run it with just a copper shim and it will basically blow up, throw a rod, burn up etc.

So just one copper one silver don't put in the extra copper?

one copper and one silver = stock shimming

K I will take one out of my new ninja then. Thanks dreaux!

your welcome:D


just so you know, the silver shim is .4mm and the copper is .1mm. as you can see the silver one is as thick as four copper shims!

No need for the extra shim at this elevation simplegreen

Ok I will leave it at stock shimming 1 Copper 1 Silver.
thanks.