Post by Doug in San Diego on Aug 7, 2011 21:14:51 GMT -6
Hi guys
With a UNI filter and a free flow exhaust what size jets do you suggest
I read this but it seemed really high
Properly Selecting And Installing Carburetor Jets
[12,251 views - 6 comments - Rating 5/5 ***** ]
Sizing at sea level:
With UNI filter 120-125
With UNI filter and low restriction exhaust 130-135
With UNI filter, low restriction exhaust, A12 cam, performance coil & CDI and NGK Iridium spark plug 135-140
Test procedure:
1. Run engine at less than half throttle a minimum of 15 minutes to close electric choke
2. On a 300' or 100 meter stretch or greater, run the engine at wide open throttle
3. While still holding the gas pedal to the floor, cut the ignition
4. Remove the spark plug and inspect end for color
a. White - Increase jet size
b. Tan/Brown - Correct jet size
c. Black - Decrease jet size
5. Clean spark plug with brass wire brush and check the gap prior to next test run
Read more: scooterdoc.proboards.com/index.cgi?board=150cc&action=display&thread=4688#ixzz1UP4vZRNk
With a UNI filter and a free flow exhaust what size jets do you suggest
I read this but it seemed really high
Properly Selecting And Installing Carburetor Jets
[12,251 views - 6 comments - Rating 5/5 ***** ]
Sizing at sea level:
With UNI filter 120-125
With UNI filter and low restriction exhaust 130-135
With UNI filter, low restriction exhaust, A12 cam, performance coil & CDI and NGK Iridium spark plug 135-140
Test procedure:
1. Run engine at less than half throttle a minimum of 15 minutes to close electric choke
2. On a 300' or 100 meter stretch or greater, run the engine at wide open throttle
3. While still holding the gas pedal to the floor, cut the ignition
4. Remove the spark plug and inspect end for color
a. White - Increase jet size
b. Tan/Brown - Correct jet size
c. Black - Decrease jet size
5. Clean spark plug with brass wire brush and check the gap prior to next test run
Read more: scooterdoc.proboards.com/index.cgi?board=150cc&action=display&thread=4688#ixzz1UP4vZRNk
..BAD TO THE BONE..