View Full Version : 250R, with stock carb and FMF pipe, What main?
z400ACDC
02-10-2005, 03:59 PM
A friend of mine just got his 86 R rebuilt, new bottom and fresh bore. He is putting on a new gnarly FMF pipe. What main jet would you start out with? Thanks!
baker250r
02-10-2005, 08:06 PM
um, i would say drop you needle a position and go from there.... probly 160 or 165..... lol, ask jeramiah jones.... i hear he is from bowling green.
JTRtrx250r
02-10-2005, 08:34 PM
http://www.fmfracing.com/jetting_center.aspx
hope it helps:)
Jetting Information
Main Jet: 158-160
Pilot Jet: 58
Needle: STOCK
Needle Position: STOCK
Power Jet: N/A
Air Screw: 1.5
Fuel Screw: N/A
Comments: Remove airbox lid snorkel
z400ACDC
02-11-2005, 08:13 AM
Thanks for the info!:)
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