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Bob_Collier

yz400 jetting

6 posts in this topic

thats great and all but we really need to know your elavation to sug. any carb settings also how many disks if any?

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which bike maybe?

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00 YZ426F

01 TT-R125L (my son's)

91 CR125

83 YZ490

74 Hodaka Super Combat(gone but not forgotten!)

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Originally posted by Bob Collier:

Have p-38,white bros. 3/4" tapered pipe and e-series-pro-mag. Need to know changes to carb.

I have a 1999 yz400f, I have 12 disc in the pipe. Plan to use for flattrack so will be wide open most of the time. Hope this is enough information for some help.

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Bob,

DVP #4-5

Fuel Screw 1-2 turns

48-50 Pilot jet

170-180 Main jet

This should get you close for sea level to 2,000 feet above.

Bill

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97 KDX220, 86 TTR225, 99 WR400f, WR timing, throttle stop trimmed, air box lid removed, White Bros head pipe, silencer and air filter. De-octopussed. Works frame guards and Thumper Rad Guards , Scotts steering damper. Odometer and headlight removed. Cycra Pro-Bend hand and mud guards. YZ stock tank, IMS seat and number plate. Renthal Jimmy Button "highs" and Renthal Soft half waffle grips. AMA, SETRA, Happy Ramblers MXC, Rausch Creek MXC, Tower City Trail Riders.

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