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Big Bore?

640 Views 2 Replies 2 Participants Last post by  Oregon's Finest
ok here i go let me know if this sounds dumb but im new to big bore and high comp pistons ..now i just went and picked up an ESR 470 big bore it came with a 13.5.1 wiseco piston now should i change my jetting its at 175 mj 45 pilot 05 adj needle and around 2 turns out ...and what fuel should i b running for break in and for just riding and i ride purty hard i do alot of sand drags ...thanks Chris
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ok sorry its 12.5.1 wiseco
Pump Premium should be fine, as for jetting try 182/48
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