tuning help

[rossthaboss11]

if you pull your plugs from your ski right after letting it idle in the driveway are they supposed to be wet or dry? also, when im riding and i jump out of the water i take my finger off the throttle, but the motor seems to still be reved up until i land again. what does that indicate? and as i try to tune my low speed screw with the ski on the trailer backed in the water everything works perfect like group k syas it should. i turn in the low speed screw until it cuts out and that whole thing. but then when i ride it doesnt hit hard at all, it boggs. at that point the screw is at 3/4 turns out. when i go to 2.75 turns out it acts alot better but not perfect

 

[Mark44]

Need more info, type of motor pipe etc. Have you used a tach. on it to tune?

Check this thread out it will tell you everything you need to do to do it correctly http://www.x-h2o.com/threads/39846

Mark44

 

[rossthaboss11]

ohh yea that would help. i dont have a tach. its a 61x superjet bored to 733cc with a riva red pipe, 180-185 psi, msd, 46mm mikuni carb with 127.5 low speed jet and 155 main jet. the main jet is most likely rich right now until i get the low speed tuned right.

 

[Mark44]

u

ohh yea that would help. i dont have a tach. its a 61x superjet bored to 733cc with a riva red pipe, 180-185 psi, msd, 46mm mikuni carb with 127.5 low speed jet and 155 main jet. the main jet is most likely rich right now until i get the low speed tuned right.

Well the first thing I would do then is get a tach so you can properly tune the motor. A tach. is cheap compared to a new cylinder and pistons.

Mark44

 

[Mark44]

What is your pop off and needle/seat?

Mark44

 

[rossthaboss11]

i dont have a pop off gauge so i cant test that, i will try to find one tho. ill have to take the carb off to check out the needle and seat i dont remember. i think maybe 2.3

 

[rossthaboss11]

maybe ill just change my needle and seat since i have extras and see what it does. or just change the spring. what do you think? weaker or harder spring?

 

[rossthaboss11]

so what pop off should i be looking for? i have all my springs laid out. ive got a 1.5 needle/seat and i thing the one in my ski now is a 2.3. just trying to find the best combo with what i have

 

[rossthaboss11]

do you think i should lower or raised my pop off pressure? according to the chart i should of had 22psi pop off before.