What fuel ratio
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Thread: What fuel ratio

  1. #1
    Junior Member Arcticrob's Avatar
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    What fuel ratio

    Hi everybody! I finally got my first R, an 89 TRX. I believe stock except for Pro Taper bars. I know 20:1 was the suggested ratio I see for the bike. Not sure if the previous owner did any carb tuning. It does have an open air box. What ratio does everyone suggest? Should I take carb apart to inspect size of jets or run with a 20 or 32:1 mixture. Still learning and don’t want to trash it. Thanks!!!!
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  2. #2
    Senior Member american opel's Avatar
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    always pull jets and clean 32-1 mix.

  3. #3
    Senior Member SandSlinger's Avatar
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    32:1 is most common. I prefer 40:1 my self, and I know quite a few who run 50:1. But your perfectly fine at 32:1

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  5. #4
    Junior Member Arcticrob's Avatar
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    Quote Originally Posted by american opel View Post
    always pull jets and clean 32-1 mix.
    Quote Originally Posted by SandSlinger View Post
    32:1 is most common. I prefer 40:1 my self, and I know quite a few who run 50:1. But your perfectly fine at 32:1
    Thanks guys!
    american opel likes this.

  6. #5
    Senior Member atvmxr's Avatar
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    kinda depends on the oil. i have 25 years using belray MC1 with 93 pump gas at 50:1 no problems. If the motor is set up for higher compression, then I use maxima 927 at 40:1 with race fuel
    88 x 3 TRX250R's, couple 88 blasters, couple 85 350x's, 87/85 TRX350XR hybrid, 88 zilla, 92/87 Hybrid LT250/500R, & JP Racing Outlaw chassis w/ LT500R HRD motor


 

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