When to change the tuning of a carb?
Install a smaller main jet and retest until you find the main jet that pulls the hardest at high rpm when fully warmed up If the bike doesn’t pull well at high rpm when cold and gets only slightly better when fully warmed up, the main jet is too small.. This must be done first – before moving on to the other tuning ranges.
How to get the best power at full throttle?
To get the best power at full throttle / 5k-7k rpm, adjust the needle height, after you have already selected the best main jet.
How to set up a Dynojet carb tuning guide?
Set for smoothest idle and 2nd gear, 4k rpm, steady state cruise operation. Set mixture screws at recommended settings, as a starting point. For smoothest idle, 2nd gear 4000 rpm steady state cruise, and 1/8 throttle high rpm operation.
What causes high RPM, 1.8 throttle maneuvers?
Pilot fuel mixture screw settings, float level and pilot jet size also affect high-rpm, 0 to 1/8 throttle maneuvers. Too lean, will cause surging problems when the engine is operated at high rpm at small throttle openings! Opening the mixture screws and/or increasing pilot jet size will usually cure the problem.
What should throttle stop rpm be when shifting on RPM?
Recommended Throttle Stop RPM settings when shifting on RPM: A “throttle stop rpm” of 3900-4000 if your car runs 1 second + under the index. A “throttle stop rpm” of 4300-4400 if your car runs .3 to .9 under the index. A “throttle stop rpm” of 4700-4800 if your car runs less than .3 under the index.
When does transmission shift at a higher RPM?
If you are accelerating at a fast rate like at 1/2 to full throttle the transmission will shift at a higher rpm. If the transmission always goes up to 4k rpm no matter haw mush throttle is used then you should have the computer scanned to check for proper speed sensor operation.
What do you call a 2 to 1 throttle stop ratio?
This is called a 2 to 1 ratio. Learning your ratio will allow you to correct for changing air conditions. If you are using an ET prediction program, you will need to enter this ratio into your prediction program. Your throttle stop ratio is highly dependent on your “throttle stop rpm”.
When does transmission go up to 4K rpm?
If the transmission always goes up to 4k rpm no matter haw mush throttle is used then you should have the computer scanned to check for proper speed sensor operation. The statements expressed above are only for informational purposes and should be independently verified.