Quinc
Buy a Superjet
- Location
- California
Read the first line of the post you quoted.
I start at 1.5 turns out on both and go from there.
Carburetor (specs) Database: SuperJet and Blaster 1
- Thread starter Sanford
- Start date
I start at 1.5 turns out on both and go from there.
- Location
- Michigan
lol Ok so 25psi is my target number then, thanks!
Quinc
Buy a Superjet
- Location
- California
Which pipe(s) is it for?
When you say 44's are you talking OEM 760 3 holes or 44's w/4 holes? True aftermarket
It makes a difference in jetting to some degree. Overall combo number is very close or same but jetting can be 180 off between models
Quinc
Buy a Superjet
- Location
- California
Anyone have jetting recs for the factory Type 4 with dual oem Mikuni 44's?
i had good experience with:
100 high 3\4 open
115 low 1 1\3 open
seat 2.0
pop off 23 psi
tried to get rid of small hesitation on bottom and engine stall at idle by reduce pop off to 18psi and close low needle to 1, didn't tried it yet, but should be OK from my experience.
100 high 3\4 open
115 low 1 1\3 open
seat 2.0
pop off 23 psi
tried to get rid of small hesitation on bottom and engine stall at idle by reduce pop off to 18psi and close low needle to 1, didn't tried it yet, but should be OK from my experience.
blastertrx
Always building something!
- Location
- New Jersey, USA
What flame arrestor are you using for these specs?
Quinc
Buy a Superjet
- Location
- California
Has anyone tried the new TNT bpipe mod chamber with 38's?
Tim posted this jetting and I am wondering how close it has been for people?
701 with stock 38's
80 low
135 high
95g spring, 2.0 needle seat
Tim posted this jetting and I am wondering how close it has been for people?
701 with stock 38's
80 low
135 high
95g spring, 2.0 needle seat
Big Kahuna
Administrator
- Location
- Tuscaloosa, AL
If he posted that, that is where I would start..............
That is exactly where I ended up at with my Stock Spec Ski when testing the TNT superstock chamber that he was making over the last few years.
This was in metro Detroit elevation. NOTE: I tested 8 wet pipes and the jetting NEVER varied much...just screw adjustments
82mm bore - wiseco's
Carbon Tech Low tension reeds
Solas YQ
8es plugs
Chokes removed
OP carbon arrestors
Ported FPP manifold and head pipe
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Quinc
Buy a Superjet
- Location
- California
Excellent! Just the info I was looking for. I wasn't sure on pop off, but I am also running OP carbon arrestors and no chokes.
loictahiti
Site Supporter
- Location
- Tahiti, french polynesia
115 in Pilotjet should be better and maybe change your impeler pitch
- Location
- CA
Currently jetting a 62t 61x 735 that I built with carbon reeds dual 46sbn b pipe and msd enhancer.. literally went through every page on here and I think I have a decent start. Only question is what's the big difference between dual 38' and dual 44's? 38's all seem to have very small pilots around 70 and you go to bigger carbs and guys are running 120-125 pilots. Just the way the carb is designed? Wondering if I should have ordered smaller jets instead of 110-130 size pilots for when I hit the water
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Sent from my SM-G950W using Tapatalk
Quinc
Buy a Superjet
- Location
- California
Finally got around to tuning my boat in flat water and noticed that I have no difference in power from 3/4 - full throttle. Any ideas?
754cc
ported cylinder
blue printed pump w/ Solas 14.5/18
stock 38's no choke, OP flame arrestors
80 low
135 high
95g spring, 2.0 needle seat
TNT piped tuned to sizzling hot chamber, 2mm stinger hole, headpipe is cool/warm to touch.
*Ski is like a rocket going from 0-3/4 throttle though.
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Big Kahuna
Administrator
- Location
- Tuscaloosa, AL
Basically your prop is peaked at 3/4 throttle. could pitch up a bit. It is pushing all it can.