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Montesa 315R Jetting

scottie_b205
in Montesa

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I have a 1999 Montesa 315R. I would like to know what good starting point for jetting at sea level is. I can't find anything info on stock jetting in the monty manual or in the forums. I can find specs for Gas Gas 270s with the same Dellorto PHBH 26MM carb on the GG usa website..

I have a 135 main

X19 needle 2nd clip from the top

38 slow jet #2

air screw 2,5 turns out.

My plug looks wet and i'm thinking the main should be smaller after seeing the Gas Gas spec in the 18 to 120 range.

  • Quote

    Carb Id NoPHBH26CS

    Main jet (standard) 135

    Slow jet (standard) B46( upper) 46 (lower)

    Jet needle clip 3rd from top

    Float level 18.5mm

    Air screw intial opening 1 turn out

    from Montesa manuel 97.>99 315

  • Quote

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