i have a js 550 with westcoast pipe, hot head, reed cylinder adaptor, light porting, 38mm carb, 440 pump, and can't get it to run right. the ski ran better with the stock pipe or the factory pipe. how can i get my performance back? do i need the carb rejetted? bigger carb? etc. i was trying to run the reed adaptor with single carb only. should i go to 44mm or dual 38mm carbs to fix problem? thanks waterdog 357
300/440/550 550 engine trouble
- Thread starter waterdog 357
- Start date
ger87410
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- Fort Worth
What are the symptoms of the problem you're experiencing?
What's she doing?
What's she doing?
its running like the power is restricted or just slow. no high rpm. it ran better with mild mods ( head, prop, factory pipe performance pipe, etc. ) i feel like i wasted money and time. i ride freestyle, need lots of lowend and high rpm. should i go back to more stock engine? dual carbs may help, but i want the low maint of single carb for freestyle.
ger87410
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- Fort Worth
Have you tuned it for the current setup, like SuperJett suggested?
What type of carb is currently installed?
The stock BN carbs cannot be rejetted.
What type of carb is currently installed?
The stock BN carbs cannot be rejetted.
ok, i guess i know whats wrong. i'm runninsg stock 38mm carb. i should get sbn carb. do you think i should run a dual setup 38 , a single 38 sbn, or a 44mm sbn? would the westcost pipe or the fatory pipe works pipe be better for the reed adaptor? thanks, waterdog 357
ger87410
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- Fort Worth
From what I've read, dual carbs give better performace. However, the performance difference sometimes is unnoticeable.
Get a 44SBN carb with an adapter and you should be ok. :biggthumpup:
It's only a 550. You're not going to get a tremendous amount of power out of it (like an SJ) no matter what carb you put on it.
Get a 44SBN carb with an adapter and you should be ok. :biggthumpup:
It's only a 550. You're not going to get a tremendous amount of power out of it (like an SJ) no matter what carb you put on it.
WFO Speedracer
A lifetime ban is like a lifetime warranty !
- Location
- Alabama
Personally I think you are wasting your time fooling around with the reed adaptor,they never worked that well,which is why they did not make them that long.
I ran an Ocean Pro 45 degree manifold with mine at first, and had to have the carb decked top/bottom and run the short Vortex flame arrestor and it still bumped the hood on some hard landings. I switched to a BCW 90 degree manifold and things were much nicer.
maybe i should just put an engine swap in. poss. a newer 550 reed engine?
or a built modified engine off ebay.
or a built modified engine off ebay.
ger87410
How did I get here?
- Location
- Fort Worth
Or a different, newer, better ski.
- Location
- Knoxville, TN
:hitwithrock
on't Diss the 550...:highhorse: