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  1. #1

    Jetting my RX 951 for aftermarket flame arrestors

    I want to install aftermarket flame arrestors on my millenium edition RX 951. First of all should I go PRO-K or R&D brand? R&D looks to be the cheaper easier install as the filter comes as a plenum, 2 into 1, and no additional mounts or hardware are needed. As far as the jetting goes I will be running stock motor with stock exhaust. What should I be running for low speed/ high speed jets with the R&D plenum? Needle/seat and spring stock(19-23 psi popoff)? Also should I remove the accelerator pump? Id appreciate any input, Thanks!


  2. #2
    If i knew,...I wouldn't ask sea-one's Avatar
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    Depending on elevation,Here approx 550ft above sea level and had one of these before the rxp ,this was my set up, Rossier Stage 1 with Delta 2 reeds/spacers/manifolds and cylinder head,Skat-Trac 13/21 R&D intake Carbs were:PROK vortex filter with "socks" Primer kit,choke plates removed, 2.3 N/S 175 highs- 92.5 lows pop off @18-20psi,can remember the screw settings but you need to verify the plug color with a "chop" test anyway.The BR9ES plugs with 91plus octane, they should be chocolate brown electrodes with the outter ring/threads wet.i used only seadoo synthetic oil-owned it for 9 years and NEVER took it apart,ONLY for maint purposes.63.4mph on radar at the time,wish i could get it back...or find it

  3. #3
    Quick question...Why the 2.3 N/S versus stock 2.0? According to mikuni a 1.5 n/s will flow the max fuel the carb will allow, only reason to up size is to match with spring for a certain popoff. If your setup was 18-20 psi that is right in the rage of the stock 19-23 psi, shouldnt i be able to just use the stock 2.0 with a 115 gram spring??

  4. #4
    If i knew,...I wouldn't ask sea-one's Avatar
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    Im in dallas area and the Ethanol based fuels are creeping up to 15%,It takes more fuel to get the correct ratio now..

  5. #5
    m schmidt's Avatar
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    I like the Prok's. And yes get rid of the accelerator pump's. My jetting is 95 lows and 170 highs 2.3 n/s. Read the sticky at the top Ben's secret mods for 951 and 1050 some good info. It will get you close.

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