Looks ok, but I would stay with 38s you really can't beat them on a 701
Carburetor (specs) Database: SuperJet and Blaster 1
- Thread starter Sanford
- Start date
Hello everybody!
Needs advice for my Blaster 1 for bouys
I want mid to High and a maximum of rpm
My config
61x/62t 700 with case/cylinder porting
Dual 760 44, vf2, msd enhancer, stock head 150/150, factory mod pipe 0/0/0,75
Stock flywheel, solas 12v, 13/19
Coffman waterbox
My 760 dual 44 (3 holes)
2/80 115 pilot 125 main screw 1.5L 1H
Currently i have 6600 rpm and 50 Mph
Big thanks
Needs advice for my Blaster 1 for bouys
I want mid to High and a maximum of rpm
My config
61x/62t 700 with case/cylinder porting
Dual 760 44, vf2, msd enhancer, stock head 150/150, factory mod pipe 0/0/0,75
Stock flywheel, solas 12v, 13/19
Coffman waterbox
My 760 dual 44 (3 holes)
2/80 115 pilot 125 main screw 1.5L 1H
Currently i have 6600 rpm and 50 Mph
Big thanks
Im sure you could find better acceleration with a flatter impeller. Make sure the top carb adjuster screws are set a little rich of peak rpm so it doesnt burn a piston.
Your target rpm is set by exhaust port height and the tuned length of your pipe. Your impeller can be repitched for any final rpm. If I were to buy a new impeller, I would get a large hub Solas YQ 9-15 or 12-18, they are nearly identical. Most Blaster wet pipes were made to turn 6700 with a 61x cylinder so a 62T should be turning a little faster.
Was looking to get a starting point. Acquired this 760 that wasn't running. Got it running and now trying to fine tune
Brand = Mikuni
Model =
Size = 44
Quantity = 2
Main Jet = 145... I'm almost certian
Pilot Jet = 120
Needle/Seat = 2.0
Spring = 80g
Pilot screw =1.5
Main Screw =tried them all... Currently at 1/2
Stock everything.
The best it's ran since i had it, idles decent a little rough. Can't seem to get the low side just right. hesitated like idle to 1/4 then went good but only to around 3/4 throttle. Wot is the same as 3/4. Wot has a weird hesitating feel almost a bogging feel. Can't really explain, but no faster than 3/4. Says it should go around 44 mph. I'm getting around 33 mph
Hoping I can just adjust for my current setup.
Brand = Mikuni
Model =
Size = 44
Quantity = 2
Main Jet = 145... I'm almost certian
Pilot Jet = 120
Needle/Seat = 2.0
Spring = 80g
Pilot screw =1.5
Main Screw =tried them all... Currently at 1/2
Stock everything.
The best it's ran since i had it, idles decent a little rough. Can't seem to get the low side just right. hesitated like idle to 1/4 then went good but only to around 3/4 throttle. Wot is the same as 3/4. Wot has a weird hesitating feel almost a bogging feel. Can't really explain, but no faster than 3/4. Says it should go around 44 mph. I'm getting around 33 mph
Hoping I can just adjust for my current setup.
When you say stock everything, do you mean this is a stock motor in a stock ski (something that came stock with a 760)? If so, why not run stock jetting?
If you have this in some halfway normal stand up setup with dual carbs you're probably WAY rich on your high speed. You'll probably end up in the neighborhood of 120 or 110 on the high speed jet. What you have in there right now is in the ballpark of what people run with a single carb.
Na it's not a stand up. I know this is really a stand up thread, but it's the only thing I could with people posting their settings. It's actually a waveblaster 2 760 with everything stock. I tried using everything stock in the carb but couldn't get it to start or halfway run. I read were someone suggested the jets I'm using and needle and seat and spring and it actually started and after 3 months of rebuilding the carbs, rebuilding the top end, and starter bendix, these jets and spring allowed me to ride it. It's the best I have ever seen it since I've had it. I have been thinking of going to back to stock jets and leaving the 2.0 needle and seat and 80 spring and seeing how that goes
I mean....I know it's probably not what you want to hear, but I'm pretty sure when Yamaha sold it from the dealership brand new and completely stock it started and ran. If it doesn't start and run with everything stock something is wrong.
I'm sure it did lol. Tomorrow Ill go back to the factory jets and see how it runs
- Location
- Aspen, Colorado
I just bought her.. I was told she was jetted for 5k ASL and I ride at 8k asl.. I was hoping that the ski wasn’t going to be that far off jetting wise but she is .. I do understand I am loosing 24% of power just riding that high up but still need help.. any suggestions for jetting?
Attachments
- Location
- Fruitport, Michigan
Hey kahuna or anyone, I have been trying to tune my setup (760cc 5mil with the dual 44's) using a tnt v3 lay down pipe running wet with a spray bar. Started with 115 main 125 low reverse jetting pop off 22. It revs on a stand but in the water under load it won't rev I dropped the main to 110m with little improvement
So the reason I'm replying to your post is that the 7th input down has 100main 115 low with one 44's. First off I'm nervous to run the main jet that low. Wondering what exhaust pipe you were running
Last edited:
- Location
- Fruitport, Michigan
I was attempting reverse jetting and started with a 115 main wouldn’t rev so installed 110 main still no high revs and wouldn’t get into higher rpm which my understanding is a symptom of a rich main jet.
Sometimes having the pilot numbers larger than the main jet numbers can work. My experience is it makes 1/4 throttle overly rich on SBN 44/46 carbs. Strict freestyle riders or racers can gain response with huge pilots but it will really guzzle gas when you are forced to ride slow. I recommend making the pilots just rich enough for good response off 1/4 throttle, and most importantly, tuning the main jet and top screw rich enough to keep from melting a piston at top speed.
Last edited:
- Location
- Mukwonago, wi
Hello, looking for some advice on my current setup. I have great power from idle to 3/4 throttle, but from 3/4 to full throttle I have no increase in power
Peak rpm is 6900 @49mph
Brand = Mikuni
Model = Retail
Size = 44mm
Quantity = 2
Main Jet = 120
Pilot Jet = 115
Needle/Seat = 2.0
Spring = 95g
Pilot screw = 5/8
Main Screw = 3/4
62t/61x 730cc ported cylinder
Boysen intake
185psi head
Stock f/a with 2 screens removed
B pipe limited-(top,middle screws closed, bottom open 1/4)
Tdr waterbox
10/16 hooker prop
Protec exit nozzle
Stock cdi
Peak rpm is 6900 @49mph
Brand = Mikuni
Model = Retail
Size = 44mm
Quantity = 2
Main Jet = 120
Pilot Jet = 115
Needle/Seat = 2.0
Spring = 95g
Pilot screw = 5/8
Main Screw = 3/4
62t/61x 730cc ported cylinder
Boysen intake
185psi head
Stock f/a with 2 screens removed
B pipe limited-(top,middle screws closed, bottom open 1/4)
Tdr waterbox
10/16 hooker prop
Protec exit nozzle
Stock cdi
Last edited:
- Location
- Mukwonago, wi
My previous setup up I was running dual 38s with the same outcome, great power from idle to 3/4 throttle and then the power just falls flat