Carburetor (specs) Database: SuperJet and Blaster 1

Joined
Nov 19, 2018
Likes
27
Location
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.
 
Joined
Feb 19, 2009
Likes
245
Location
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
 
Joined
Nov 19, 2018
Likes
27
Location
Idaho
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.
 
Last edited:
Joined
Feb 26, 2017
Likes
193
Location
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.
 
Joined
May 22, 2017
Likes
644
Location
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.
 
Last edited:
Top Bottom