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Old 06-18-2010, 04:52 PM   #1
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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.
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Old 06-18-2010, 04:53 PM   #2
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also I have the dynamite 053 pipe and live at high altitude if that affects anything..
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Old 06-18-2010, 04:57 PM   #3
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1 copper 1 silver.
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Old 06-18-2010, 05:02 PM   #4
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You should be fine with stock shimming. No need for an extra shim.
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Old 06-18-2010, 05:18 PM   #5
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1 copper 1 silver.
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.
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Old 06-18-2010, 05:21 PM   #6
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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.
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Old 06-18-2010, 05:29 PM   #7
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So just one copper one silver don't put in the extra copper?
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Old 06-18-2010, 05:41 PM   #8
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So just one copper one silver don't put in the extra copper?
one copper and one silver = stock shimming
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Old 06-18-2010, 06:04 PM   #9
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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.
K I will take one out of my new ninja then. Thanks dreaux!
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Old 06-18-2010, 06:20 PM   #10
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your welcome


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!
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Old 06-19-2010, 04:31 AM   #11
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So just one copper one silver don't put in the extra copper?
No need for the extra shim at this elevation simplegreen
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Old 06-19-2010, 06:11 AM   #12
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Ok I will leave it at stock shimming 1 Copper 1 Silver.
thanks.
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