factory pipe specs and porting
- Thread starter ski4
- Start date
that's what i was thinking
i still am not right and this is what supposedly 2 of the guys i ride with are running, i am a little worried to run that myself
was just curious if there was anyone else, they may be wrong in their memory as well
i am starting to think the poor running of my ski is not the carbs at all
i still am not right and this is what supposedly 2 of the guys i ride with are running, i am a little worried to run that myself
was just curious if there was anyone else, they may be wrong in their memory as well
i am starting to think the poor running of my ski is not the carbs at all
i hope so, just seems i have this lack in rpms on top and it feels like it is sputtering/ stuttering
i have run though 137.5 to 145 main jets and still no better, withthe 145 after a full hard rev it would just stall( the adjuster was only 1/4 out)
140 had the problem no matter where the adjuster was and it seem s137.5 is the same
that's why i was wondering if i need to go down to what factory rec's
135
i have run though 137.5 to 145 main jets and still no better, withthe 145 after a full hard rev it would just stall( the adjuster was only 1/4 out)
140 had the problem no matter where the adjuster was and it seem s137.5 is the same
that's why i was wondering if i need to go down to what factory rec's
135
really? so it is conceivable that i could run the factory pipe jetting and be ok without blowing up my motor??
i am running a b pipe, stock carbs and f/a, running just a shade under 180 lbs compression, ported cyl's , stock cases
wammer freestyle prop
my two friends are running very similar setups, although one has race porting and one freestyle porting otherwise very close
i am running a b pipe, stock carbs and f/a, running just a shade under 180 lbs compression, ported cyl's , stock cases
wammer freestyle prop
my two friends are running very similar setups, although one has race porting and one freestyle porting otherwise very close
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One of my mates had the exact same problems you are describing. We made some big jetting changes up and down the scale on top and bottom, but the ski would only run marginally better or worse before it just bogged down, and wanted to die. The engine would keep runnig if you feathered the throttle for about 10 seconds and it was ok, indicating a lack of fuel.
Anyway, a long story short, it turned out to be his primer T off fitting that was leaking/sucking in air/too small (take your pick!)
What I'm getting at is, don't always assume it's the jetting alone. Think outside the box if the changes you are making aren't really changing the performance of the engine.
Anyway, a long story short, it turned out to be his primer T off fitting that was leaking/sucking in air/too small (take your pick!)
What I'm getting at is, don't always assume it's the jetting alone. Think outside the box if the changes you are making aren't really changing the performance of the engine.
- Location
- Cleveland Ohio
Try the FP settings... both Voges and Mau are running it with no problems. Your boat isn't that modded that it should be too far off.
J
justride
Guest
what is the factory pipe settings
for a b-pipe
main,
pilot,
needle seat and spring???
for a b-pipe
main,
pilot,
needle seat and spring???
SJBrit
Extraordinary Alien
- Location
- Bradenton, FL
ski4 said:
That sounds lean on the high end to me, but the 145's ought to be plenty big enough. Like Wattage said, I'd go ahead and look for air leaks: I had an O-ring problem with my ADA head that had us up to 150's before we realized the problem. Check your fuel lines, manifold gasket and head (what head are you running?). I'd expect you to be at around 135 with that setup.
pressure tested the motor before putting it in and it would hold pressure no trouble
fuel lines seem great
all i can think of is the carbs are gummed up somewhere ( but i have had them apart multilpe times and cleaned very very good) but i guess it could still be an issue, when i got these things they were very very gummed up
i have not tried as low as a 135 yet that is my next step i guess
can being overly rich cause these same sx's
fuel lines seem great
all i can think of is the carbs are gummed up somewhere ( but i have had them apart multilpe times and cleaned very very good) but i guess it could still be an issue, when i got these things they were very very gummed up
i have not tried as low as a 135 yet that is my next step i guess
can being overly rich cause these same sx's
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Big Kahuna
Administrator
- Location
- Tuscaloosa, AL
I found that with my TLR ported (Freestyle spec) engine with 38's, I had to run 105 Lows and 140 highs............ worked like a champ.
thanks bk
i went as high as 85 pilots and could not get past idle, as soon as i applied the throttle it would stall even at only 1/8th a turn out on the low speed 75 was too learn and it would not start with out priming
140's are where i was but still had this dumb stuttering at full throttle, no matter where i had the adjusters
stepped up thinking i was lean and the 145's worse then would stall out after a full throttle hit
stepped down to 137.5 and it is still evidnet there
all i have read leads me to think lean but then there is another posting going currently with the same trouble in a kawi and he is thinking it is a overly rich issue as well
my plugs are black, not oily but for sure not brown
i need to get some more new ones
but thinking of plugs the douchebag the ski was sold to me from did say somethig about it not working right with br8es's and having to use b8es
could that be true, i have the reistor plugs in now???? hmmmmmmmmmmmm:banghead:
i went as high as 85 pilots and could not get past idle, as soon as i applied the throttle it would stall even at only 1/8th a turn out on the low speed 75 was too learn and it would not start with out priming
140's are where i was but still had this dumb stuttering at full throttle, no matter where i had the adjusters
stepped up thinking i was lean and the 145's worse then would stall out after a full throttle hit
stepped down to 137.5 and it is still evidnet there
all i have read leads me to think lean but then there is another posting going currently with the same trouble in a kawi and he is thinking it is a overly rich issue as well
my plugs are black, not oily but for sure not brown
i need to get some more new ones
but thinking of plugs the douchebag the ski was sold to me from did say somethig about it not working right with br8es's and having to use b8es
could that be true, i have the reistor plugs in now???? hmmmmmmmmmmmm:banghead:
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ok went withthe 135's for main jets today and kept my pilots at 80
man, this is the closest yet. i get hard pull, i feel like my rev limiter is kicking in on top though, no bogs or hesitations leading up to wide open
but the last 1/4 throttle seems to do nothing,
is it mandatory to modify or run aftermarket cdi's on a motor with a b pipe and ported cylinders, could i be hitting my rev limit? or is there somethig else going on,
i have a grey /tan color forming on my plugs so far. i was thinking i could be lean but as i turned the high speed adjuster out , the further i went the less top end i had and the stuttering started to come back
i am at 1 1/8th turns out now, and maybe should still could come in a 1/4 turn
maybe that is my problem
if the head pipe is not adjusted will that cause some limiting in rpms?c
but man, so much better with that jetting than what i have been having
to recap, stock n&s and spring, pilot 80 ( 70 is stock) and 7/8's out main 135 ( 130 is stock)and 1 1/8th out
man, this is the closest yet. i get hard pull, i feel like my rev limiter is kicking in on top though, no bogs or hesitations leading up to wide open
but the last 1/4 throttle seems to do nothing,
is it mandatory to modify or run aftermarket cdi's on a motor with a b pipe and ported cylinders, could i be hitting my rev limit? or is there somethig else going on,
i have a grey /tan color forming on my plugs so far. i was thinking i could be lean but as i turned the high speed adjuster out , the further i went the less top end i had and the stuttering started to come back
i am at 1 1/8th turns out now, and maybe should still could come in a 1/4 turn
maybe that is my problem
if the head pipe is not adjusted will that cause some limiting in rpms?c
but man, so much better with that jetting than what i have been having
to recap, stock n&s and spring, pilot 80 ( 70 is stock) and 7/8's out main 135 ( 130 is stock)and 1 1/8th out
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