[subzero25099]

ESR Big Bore Jetting Database.....

so i would really like for ppl to post there setups and jetting specs just to make it easier for ppl. i would like to see ppl post why they went with a certain needle, over another, maybe explain what they tried and tested.

Motor: ESR 310
Stroke: 3mil
Port: ESR TRX9.5
Exhaust: FMF Fatty
Reeds: VForce3
Intake: ESR Airbox Eliminator
Plug: BR9ES
Gap: .28
Carb: A/S 38mm
Pilot: 48
Needle: CGJ
Groove: 3rd
Main: 178

i tried a 175mj and the plug was looking lean, it had color but not safe. tried a 180mj and there wasnt much difference in power other then 6th was sluggish and it smoked pretty heavy at idle. i tried the 4th clip position and dropped the main and also went up but it just hated the clip being richer. using the needle based on ESR recommendation. open for change

Motor: ESR 310
Stroke: 3mil
Port: ESR TRX9.5
Exhaust: TRX5B
Reeds: VForce3
Intake: ESR Airbox Eliminator
Plug: BR9ES
Gap: .28
Carb: A/S 38mm
Pilot: 48
Needle: CGJ
Groove: 3rd
Main: 188

Drastic change in the mj for this pipe. i cant believe how much the pipe uncorked the machine. im not sure if i should go up on the clip too and drop the main some? will it lean out in mid and burn up the machine?? havent much riding time on it at this jetting spec...let me know.

 

[subzero25099]

ah it dont matter im going to change the title of this....
do u suppose the "d" needle make the main "richer" therefor u have a smaller mj?

 

[subzero25099]

that makes sense, but wouldnt it also suck more air?? i see lots of ppl with the dgh needle, why is that?

 

[subzero25099]

starting to see a real definate pattern of the dgh and pilot and main sizes....this is excatly the info i am looking for....keep it coming guys.....thanks a bunch