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1978 XS750 high speed problems

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  • #76
    Couldn't resist re-viving an old thread!

    Hey fellas-
    Been over on the Triples.ord forum for this bike, but I decided to visit my roots again. So, I have the bike running in great shape, but happened to notice my mpg's are horrible, which made me check the obvious sources like drag, oil, etc. Well, everything checked out, which is making me believe it's my main jets being too big. Stock were 130's, and I currently have 135's in now, with only a individual pod set-up. The advice is that I should NOT be running anything more than stock jets, and I should adjust the clip position. I think I am going to buy some 130's, and 132.5's and play around with getting better fuel mileage. I bought a Morgan Carbtune and Colortune to aide me in syncing and adjustment.
    1979 XS1100F
    2H9 Mod, Truck-Lite LED Headlight, TECHNA-FIT S/S Brake Lines, Rear Air Shocks, TKAT Fork Brace, Dyna DC-I Coils, TC Fuse Block, Barnett HD Clutch Springs, Superbike Handlebars, V-Star 650 ACCT, NGK Irridium Plugs, OEM Exhaust. CNC-Cut 2nd Gear Dogs; Ported/Milled Head; Modded Airbox: 8x8 Wix Panel Filter; #137.5 Main Jet, Viper Yellow Paint, Michelin Pilot Activ F/R, Interstate AGM Battery, 14MM MC, Maier Fairing, Cree LED Fog Lights.

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