mungen

iTrader: (1)

running a cold plug for me is my engines last a long time and are easer to tune. with hot plugs the engines run hotter around 260-280 with it not running lean.
bought a ninja before we started racing this year and i'm running a cold plug in it and it has 4 gallons on it and it still tight. my $.25 worth.

Davidka

iTrader: (86)

I like A5's (med-cold, like an MC-8) and either 086 or Jp2 pipe. I didn't like the #8 as much with 30%, wasn't crisp on top.

yeaklet4

iTrader: (34)

is there a power diff's from a hot plug to a cold plug

mungen

iTrader: (1)

not really

cjtamu

iTrader: (11)

Plug temp and shimming are how you change the timing on your engine. Not so much about more or less power but where the power's delivered. Both the A3 and A5 will work in that engine, the stock shimming is fine for 30%. Try both and see which works best for you.

yeaklet4

iTrader: (34)

how many shims for 20% nitro

mungen

iTrader: (1)

i'd use one shim for 20% fuel and 2 for 30%. never had a problem with it.

yeaklet4

iTrader: (34)

what would happen if ya used 2 for 20%

mungen

iTrader: (1)

2 shims has less compression than one shim.

meno222

iTrader: (14)

i just got a used rg. i would like to know the base needle settings for this engine, thank you.