40mm mikuni

rambo3010

New member
Joined
Mar 11, 2009
Messages
38
Age
54
Location
dresbach, mn
hi there again. I have a jetting quistion. 79 srx with 40mm mikunis bored to 42mm .stock pips and heads for now. i want to make a vintage ride comming up.whare would you start.thanks, rob. also were would you set the timming at. who ever I bought it from has it advanced so fare it yanks the recoil rope out of youre hand. thanks again, rob.
 

i can tell you stock specs then you can take it from thare.

timing is 1.4MM BTDC (.055") then line up marks on flywheel and base.
36MM power jet carbs
main jet is 340
power jet is 80

if your not running power jets and 42MM carbs id bump it a bunch...
 


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