- Location
- Dadeville al
Hey I have a 61x case with 718 ported cylinder. Mated with a b pipe and stock head. Putting a wet jet 46 manifold and carb on it. What jetting do y’all recommend?
Wet jet 46.
- Thread starter Lake martin burnner
- Start date
Since your cylinder has been cut and you didnt mention pump specs, I recommend starting with a 200 main jet an the top screw 3 turns out . This should be way too rich but its where you have to start whenever you're not 100% sure. Get 120 thru 130 pilots and a 160 and 175 main. The pilot circuit is sensitive to incremental jet changes. The main circuit has the top screw as a supplement that will cover large gaps in jet sizes.
- Location
- Dadeville al
Thanks man
- Location
- Dadeville al
What’s the best way to make sure I am not leaned out at wot?
Normally, you will lose power if too rich and lose response if too lean. The carb tune will tend to be a little rich of peak rpm when the ski pulls hardest whenever a small pilot is used. A lot of freestyle guys like to use big pilot jets and a leaner main. This kind of tune will respond good but use a lot of gas when cruising around.
- Location
- Dadeville al
Thanks for the information. I am new to tuning. Trying to learn. Just hate having unused potential because tunning is off
- Location
- Granite Bay, CA
I hate to thread jack, and would rather PM someone here, but I am new and it won't let me PM until I post enough.
Anyway, I have a stock wetjet kraze setup with the 46 mikuni, WPP intake and Wetjet pipe with tailcone flipped in my budget build 1992 SN. Stock jetting on a wetjet is 117.5p and 155m with a 115 g spring and a 1.5n/s, stock airbox., My popoff pressure is about 35. Is it safe to assume stock jetting will work for me, or does the fact that it is not in a sit down anymore necessitate a change in jetting. To me a load on an engine is a load on an engine, regardless. But please correct me if I am wrong. Would I benefit from a larger pilot and/or a smaller main?
The top screw and main jet go to the same place. You want to be a little rich of peak rpm at full speed. If the top screw ends up over 2 turns out then install a larger main jet. The pilot jet is mainly 1/4 throttle and they are very sensitive. I would buy pilots ranging from 120-130 and a 165 main. Lowering the pop off will make the pilot and idle mixture screw much richer. Raising it will do the opposite. I would add a 2.0 needle and stretch the spring to 25-30 psi and start tuning. It may take several hours to learn how carb tune affects performance but you will become your own expert very quickly.