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Post by chamisataza on Mar 28, 2013 0:54:08 GMT -5
i have 72cc polini contessa,1500 rpm torque spring 1000rpm clutch spring 6 &8g rollers kelli pulley v8 exhst,Racingcdi 88main jet,stock airbox.stock carb any suggestion or comments!?..
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Post by teddy554 on Mar 28, 2013 11:56:35 GMT -5
lighter rollers 1500 torque spring
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Post by chamisataza on Mar 28, 2013 20:38:43 GMT -5
so 7g is still heavy for 1500rpm torque spring i might lost top end
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Post by teddy554 on Mar 28, 2013 20:44:21 GMT -5
really you need to find the best weight for you i run 4g on my scoots i like to rev quick
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Post by skuttadawg on Mar 28, 2013 20:53:10 GMT -5
What mm is the carb ? and Uni will help but will require a larger main jet and testing out a few sizes until you find what works . Many use 4 or 5 grams on a 2T but it was too light for me I use 8 gram Dr Pulley sliders since they are better than rollers NGK BRPHIX iridium sparkplug is what I use . I have been looking at intakes and the Stage 6 looks great . Here is is along with many other goodies scootertuning.ca/en/4-yamaha-jog |
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Post by chamisataza on Mar 28, 2013 23:18:10 GMT -5
i am using stock carb of the sym dd idk what mm is the stock size of sym dd50.i am ordering #88mj for now i will stick to my stock carb just up jet the size what would be probably my mph if i have this set up..right now i am still w/ my 50cc block runs 45mph w/ 85mj may next mo.when cold is gone i will put my 72cc polini and #88mj.i already try 5g it did not reach 45 mph only 40mph
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Post by skuttadawg on Mar 29, 2013 11:03:33 GMT -5
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Post by wiscompton on Apr 10, 2013 22:54:15 GMT -5
Running the stock carb on a kit that expensive is like putting pearls before swine. Also I am going to go ahead and say your jet is way lean. Upjetting 3 sizes for all that stuff is way too small. If you don't want to spring for the bigger carb/intake upjet. A lot. And do your plug chops because I can guarantee you will seize that kit on an  main jet. 3 sizes is like what you up jet for winter or a performance pipe or something, not 50% increase in displacement. I |
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main jet.