Carburetor (specs) Database: SuperJet and Blaster 1

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Idaho
I'm wondering what you mean about opening up the intake. What is there to open up?
I made the openings on the carbs match and I left the small cap off of the top. I shaved back some of the plastic on the inner part where it is open. Maybe I exaggerated a bit but I think it is a good setup to keep water out.
 
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South Africa
I made the openings on the carbs match and I left the small cap off of the top. I shaved back some of the plastic on the inner part where it is open. Maybe I exaggerated a bit but I think it is a good setup to keep water out.
You have done all the rights airbox mods(except cap can go back on), run only single screens, most people don't realize how much the stock setup holds a 760 back
 
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You have done all the rights airbox mods(except cap can go back on), run only single screens, most people don't realize how much the stock setup holds a 760 back
I think the 760 intake is pretty good. I'll take it off and run with open carbs just to see. I am running the single screens. My thoughts are (with total fuel flow at 247.5 at 2700 ft elevation) that my setup is making really good power. I think I must have nailed it with my porting or HPE's cylinder porting. It runs really strong, seems it is punching above its weight class a bit.
 
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Feb 26, 2017
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Minnesota
I think the 760 intake is pretty good. I'll take it off and run with open carbs just to see. I am running the single screens. My thoughts are (with total fuel flow at 247.5 at 2700 ft elevation) that my setup is making really good power. I think I must have nailed it with my porting or HPE's cylinder porting. It runs really strong, seems it is punching above its weight class a bit.
When I have tried running without the top of the "airbox" it made a huge difference in tuning (much leaner), I'm not so sure that translates to a huge difference in power though.
 
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SW Tenn
I am looking for some starting specs for an engine I am building using a wetjet 46mm setup. Looking at the jetting that works in this thread for a single 46 it seems that 120/150 may be a decent starting point, I however just cracked it open and its 107.5/150 1.5ns unless I read the text wrong, its really small. Considering its getting a new top end should I go fatter than 120/150 to ensure I dont run lean during break in? Also, the 1.5 ns seems a bit low but I dont know poo about jetting.

Engine
61x/61x with mild porting @83mm using Sudco pistons
Coffman Sizzler
ADA head @170

I plan on using the stock wetjet FA with one screen. Any thoughs on pop off?

Thanks for the help.
 
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Zero Client

Blowsioning my money!
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Sep 27, 2013
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Marietta, GA
I am looking for some starting specs for an engine I am building using a wetjet 46mm setup. Looking at the jetting that works in this thread for a single 46 it seems that 120/150 may be a decent starting point, I however just cracked it open and its 107.5/150 1.5ns unless I read the text wrong, its really small. Considering its getting a new top end should I go fatter than 120/150 to ensure I dont run lean during break in? Also, the 1.5 ns seems a bit low but I dont know poo about jetting.

Engine
61x/61x with mild porting @83mm using Sudco pistons
Coffman Sizzler
ADA head @170

I plan on using the stock wetjet FA with one screen. Any thoughs on pop off?

Thanks for the help.
The Wetjet 46mm setup likes a bit of bottom jetting. Try;

150m
135p
2.0ns
80g spring
1 turn on both screws

This is just for starting points. This is also for a B-Pipe limited so not sure how the sizzler will differ. You may need to change the bottom pilot and popoff +/-.
 
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maxboost

Super tuned
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May 2, 2015
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Ia
I am looking for some starting specs for an engine I am building using a wetjet 46mm setup. Looking at the jetting that works in this thread for a single 46 it seems that 120/150 may be a decent starting point, I however just cracked it open and its 107.5/150 1.5ns unless I read the text wrong, its really small. Considering its getting a new top end should I go fatter than 120/150 to ensure I dont run lean during break in? Also, the 1.5 ns seems a bit low but I dont know poo about jetting.

Engine
61x/61x with mild porting @83mm using Sudco pistons
Coffman Sizzler
ADA head @170

I plan on using the stock wetjet FA with one screen. Any thoughs on pop off?

Thanks for the help.
I just got wetjet 61x in my superjet tuned real well. Strong bottom and great mid and top with a type 4 dry pipe, little different than a wet pipe but I ended up

145 main but 150 wouldn’t hurt
135 pilot
2.5 n/s with 115 gram spring( think I should try an 80 gram spring yet)
Bottom screw 1.5 turns
Top screw 2.0 turns
 

Zero Client

Blowsioning my money!
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I just got wetjet 61x in my superjet tuned real well. Strong bottom and great mid and top with a type 4 dry pipe, little different than a wet pipe but I ended up

145 main but 150 wouldn’t hurt
135 pilot
2.5 n/s with 115 gram spring( think I should try an 80 gram spring yet)
Bottom screw 1.5 turns
Top screw 2.0 turns

No don't go with a 80g on a 2.5ns. Go with 140P and 150M Your screws are too far opened w current jetting.
 

maxboost

Super tuned
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Location
Ia
No don't go with a 80g on a 2.5ns. Go with 140P and 150M Your screws are too far opened w current jetting.
Only reason I wanted to try it was because it came with those pop off settings stock I think, I don’t disagree with a bigger jet because I started at 125 low, had a lean hesitation, now I’m where I’m at now and it’s much better. Thanks for the tip
 

Zero Client

Blowsioning my money!
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Only reason I wanted to try it was because it came with those pop off settings stock I think, I don’t disagree with a bigger jet because I started at 125 low, had a lean hesitation, now I’m where I’m at now and it’s much better. Thanks for the tip
SBN46 come with 2.5ns/80g per Mikuni. I guess you could try it, but 14psi pop is a very low value. Make sure you check for dribbling from the bombsight. It might be better suited to raise your pilot than it would be to lower your popoff.
 
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