Jetting please help !!!!! B
- Thread starter Cr500/90
- Start date
Please keep to one thread to avoid multiple answers and to avoid confusion.
More info please, all mods, pipe, pre mix, air box lid ect.
More info please, all mods, pipe, pre mix, air box lid ect.
flow into and out of the engine make the most difference in jetting, bored a few sizes over means next to nothing.
not sure that a +3 stroker requires richer jetting if the pipe and airbox/airfilter remained the same ?
list your pipe and airbox/airfilter configuration for "suggestions" on main jet starting points
before any jetting,
clean the carb:
http://www.blasterforum.com/carburetor-138/how-clean-your-carb-pics-209/
note jet sizes while your in the and report back with those findings
clean re-oil the airfilter
it must be proven leakproof with a leakdown test:
http://www.blasterforum.com/do-yourself-20/build-use-leakdown-tester-10663/
or:
http://www.blasterforum.com/sale-18/leakdown-testers-55015/
and the float height checked/set:
http://www.blasterforum.com/carburetor-138/float-heights-how-adjust-them-50565/
this will tell you what size pilot:
http://www.blasterforum.com/carburetor-138/adjusting-your-airscrew-pilot-jet-51060/
drop the needle clip (raise the needle) until it rich bogs then back down 1 clip position
then plug chop for main jetting:
http://www.blasterforum.com/carburetor-138/how-plug-chop-53237/
not sure that a +3 stroker requires richer jetting if the pipe and airbox/airfilter remained the same ?
list your pipe and airbox/airfilter configuration for "suggestions" on main jet starting points
before any jetting,
clean the carb:
http://www.blasterforum.com/carburetor-138/how-clean-your-carb-pics-209/
note jet sizes while your in the and report back with those findings
clean re-oil the airfilter
it must be proven leakproof with a leakdown test:
http://www.blasterforum.com/do-yourself-20/build-use-leakdown-tester-10663/
or:
http://www.blasterforum.com/sale-18/leakdown-testers-55015/
and the float height checked/set:
http://www.blasterforum.com/carburetor-138/float-heights-how-adjust-them-50565/
this will tell you what size pilot:
http://www.blasterforum.com/carburetor-138/adjusting-your-airscrew-pilot-jet-51060/
drop the needle clip (raise the needle) until it rich bogs then back down 1 clip position
then plug chop for main jetting:
http://www.blasterforum.com/carburetor-138/how-plug-chop-53237/
considering your planning on updating the pipe again soon, and the cost of shipping jets (usually $7/10 per order)
i'd buy 260/270/260/290 and 300 mains.
you'll save shipping over multiple orders in the future by ordering a bunch at a time, and have jets on hand for most left bend pipes and airbox/filter options
i like Carburetor Parts Warehouse
