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View Full Version : Easy Jetting question (for those who know)



SportbikeRiderAlan
04-09-2003, 04:52 AM
2002 RS250.
I just installed a new Arrow full system on it. With this being the ONLY modification (so far), should I immediately change the jets to the recommended (by Arrow) 270/260 jets? Or should I leave the stock 280/270 jets in the bike and see how it feels?

Thanks in advance!

-Alan

gixer119
04-09-2003, 06:08 AM
I left in the stock jets and will only go down by 10 for each chamber if it stays hot in the summer.

dowzerr
04-09-2003, 12:58 PM
always better to err on the side of richness.

wsmc667
04-09-2003, 05:59 PM
i've got arrows and run 250/260

colin skillicorn
04-10-2003, 09:51 AM
ONLY ERR ON THE RICH SIDE IF YOU DONT WANT ANY POWER

beanarillo
04-11-2003, 05:56 AM
Rich: Slight loss of power

Weak: Pre ignition, melting internals, seizure, highsides, rebuild

Ummmm. Tough one that.

In ref to the other topic, if you run it rich it will produce less power but will still be more powerful than an rgv lump. Dig Dig ;)

dowzerr
04-15-2003, 04:35 PM
if you are running it on the road err on the side of richness. My friend had his running pretty lean when racing and came off at 135mph at the end of the longest racing straight in Britain when it seized. He was okay, if he'd been out on the road he would probably be dead. There are too many factors when road riding (e.g temperature) to risk running it lean.