Carburetor (specs) Database: SuperJet and Blaster 1

[ashycallan54]

Hi
I need help on carb set up in my Waveblaster1
Stock 61x/61x with stock carb
B pipe
Trd water box
12 vein pump

 

[Philip Clemmons]

This should get you close. If you have a stock flame arrestor that will change it a little, but this is a good starting point.

 

[afraz1er]

Take one of the screens out of the F/A

 

[afraz1er]

1. Prok flame arresters
2. Dual OEM 44
3. VF2 reeds
4. Ada intake spacer
5. Finger ported 62t cases
6. Ported Jetmaniac 61x cylinder
7. Blowsion big bore sleeves @789cc
8. Wossner pistons
9. Ada head, 35cc domes
10. Big bore Factory B, limited chamber,
11. ATP water box
12. PFM lightened flywheel
13. 3mm cutback 8/13 skat impeller

112.5 pilots
125 mains
95g springs
2.0 N/S
3500' elevation

Hits hard and revs quick. Passed a ~5 second WOT. Was about all I wanted on this Reaper hull. Gets a little wobbly after that.

I forget what the needles are at but I started both at one turn out didn't take much adjustment after that.

 

[amp3d]

Picked up a stock 62T with dual 38s and aftermarket air FA.
Previous owner had the carbs all over the place with different size jets.
I'm at about 700' above sea level.

I have a few sizes of jets on me and was just wondering what the good baseline would be.
These are the sizes I have (and quantity on hand):

pilots: 67.5 (2) & 72.5 (2)
main: 120 (1), 130 (1) , 135 (2)

Would anyone recommend I reuse some of these or purchase some other sizes?

Would 135/72.5 get me close?

PS- The motor is a new sbt and still on it's break-in tank running rich

I'm not too bad with tuning, but this is my first superjet so a starting point would be awesome!

 

[fastgtfairlane]

The stock jetting for 38s on a 62t is 70 pilots, 130 mains, 1.5 n/s, 115g spring. I believe the popoff is around 55psi. Since you have the open style flame arrestors you'll need to lower the popoff. I believe just replacing the spring with a 95g (reverse wound) would get you close. If you have the 72.5, just run that.

If you put an aftermarket pipe on it, you'll increase to at least 75p 135 mains. Popoff will stay whatever you have it set to.

 

[JustinCider]

Hi
I would definitely appreciate some input on my ski as I've been having weird symptoms. I had an issue with my ski last year bogging during left turns for setup wakes and tailstands, in addition to a unpredictable power band around 1/3 throttle that made simple cruising very difficult for my wife when she rode.

From what I've read it's because my popoff is too low.

I have a 61x/61x 701 with a rrp carbon laydown pipe (I know it's too much pipe for that motor but it's what I got for the foreseeable future) currently running
Brand = mikuni
Model = sbn
Size = 44
Quantity = single
Main Jet = 150
Pilot Jet = 120
Needle/Seat = 2.0
Spring = 65 (17psi pop off)
Pilot screw = 1
Main Screw = 2.5

Gas Octane = 94
Altitude = 1885 ft
Main type of riding = boat chasing and whatever freestyle I can manage with it.
Would it pass the 10 second WOT test = it did so far as I can tell.
Powerband = unpredictable, powerful and happens randomly around 1/3 throttle give or take.
Motor type/setup =61x/61x. Girdled head but only running 155psi. Rrp carbon laydown pipe. Stock 61x airbox with 3 screens. Solas 144 mag pump with 12/17 impeller.

If I missed anything please let me know. Been reading all I can really trying to figure out this bogging and random powerband

 

[kevbo]

All good pipes will make the power either on or off. If you raise the popoff you will also need to use a larger pilot to have the same 1/4 throttle mixture. Your ski may be a little over propped with your high rpm pipe.

 

[fastgtfairlane]

Hi
I would definitely appreciate some input on my ski as I've been having weird symptoms. I had an issue with my ski last year bogging during left turns for setup wakes and tailstands, in addition to a unpredictable power band around 1/3 throttle that made simple cruising very difficult for my wife when she rode.

From what I've read it's because my popoff is too low.

I have a 61x/61x 701 with a rrp carbon laydown pipe (I know it's too much pipe for that motor but it's what I got for the foreseeable future) currently running
Brand = mikuni
Model = sbn
Size = 44
Quantity = single
Main Jet = 150
Pilot Jet = 120
Needle/Seat = 2.0
Spring = 65 (17psi pop off)
Pilot screw = 1
Main Screw = 2.5

Gas Octane = 94
Altitude = 1885 ft
Main type of riding = boat chasing and whatever freestyle I can manage with it.
Would it pass the 10 second WOT test = it did so far as I can tell.
Powerband = unpredictable, powerful and happens randomly around 1/3 throttle give or take.
Motor type/setup =61x/61x. Girdled head but only running 155psi. Rrp carbon laydown pipe. Stock 61x airbox with 3 screens. Solas 144 mag pump with 12/17 impeller.

If I missed anything please let me know. Been reading all I can really trying to figure out this bogging and random powerband

What ski is this in? The pipe is fine with that engine, definitely not your problem. The issue I see is the popoff with the flame arrestor. Remove 2 screens and raise your popoff to 25 psi with a 95g spring. Also, if you're over 2 turns on your high or low speed screws, it's time to go up in jetting. Id try a 155 main..