eating spark plugs i think my jetting is 2 rich i need help

[drag101]

well i can ony go a few hours befor i eat a plug i dont remeber what my needle is set at but i know im running a 155 main and i think a stock pilot sizeany help would be great i have a race in a week and i need to figure this out


have a yoshi s/o...k&N...SRP cdi

[Wheelie]

Airbox lid on or off?

[drag101]

airlid is on

[Wheelie]

Take it off. 155 is too rich w/the lid on.

[jrafter]

i have a yoshi full system and K&N my jetting is main 150 pilot is 42 and runs great

[drag101]

what if i kept my main at 155 and droped my pilot
and would i loose a lot of power if i droped my main

[GPracer2500]

Originally posted by drag101
...would i loose a lot of power if i droped my main

The best power comes with the correct jetting. If your main is too big and you go smaller you'll gain power.

[drag101]

ya but what size should i run my pilot and main

[Wheelie]

If you drop the pilot and not the main--the quad will have hard starting, poor throttle response, and no power on top end. Jet it properly.

If you want to keep the current main jet--remove the lid. Otherwise drop down to a 150 or 152 main.

[drag101]

what kind of power difference will i see if i drop to a 152

[Dill]

2.2984 hp.

seriously though, just try it and find out.

[hornetgod13]

A 152K main should be close with your lid on. Bumping your pilot up to a 40K would'nt hurt the low end and starting as well.