Tuning Jet on Gas Flathead
- Thread starter Prokart88
- Start date
CarlsonMotorsports
Site Supporter
^ pretty much covers it...
.038" 1 1/2 turns out on the needle. Lean it (in) until it runs clean on the top end.
If it shuts off for just a sec. at peak rpm, then it's too rich - turn the needle in until you get to 1/2 turn out, then go leaner on the jet if necessary.
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Thanks and God bless,
Brian Carlson
Carlson Racing Engines
Vector Cutz
www.CarlsonMotorsports.com
Carlson Motorsports on Facebook
30 years of service to the karting industry
Linden, IN
765-339-4407
bcarlson@CarlsonMotorsports.com
.038" 1 1/2 turns out on the needle. Lean it (in) until it runs clean on the top end.
If it shuts off for just a sec. at peak rpm, then it's too rich - turn the needle in until you get to 1/2 turn out, then go leaner on the jet if necessary.
-----
Thanks and God bless,
Brian Carlson
Carlson Racing Engines
Vector Cutz
www.CarlsonMotorsports.com
Carlson Motorsports on Facebook
30 years of service to the karting industry
Linden, IN
765-339-4407
bcarlson@CarlsonMotorsports.com
FlatheadsForever87
Member
Does this apply to a 3 hp as well?
CarlsonMotorsports
Site Supporter
You won't be that big on a 3HP carb due to the carb bore size and the A/F ratio.
It's been MANY years since we've "built" 3 HP engines for 1/4 midget and celebrity races.
I want to say that we were in the .034" range.
It's been MANY years since we've "built" 3 HP engines for 1/4 midget and celebrity races.
I want to say that we were in the .034" range.
FlatheadsForever87
Member
what is the stock one if its all the same. I am gonna have to drill it out if its smaller. After I check for air leaks
FlatheadsForever87
Member
Never
mind it is a air leak at the intake gasket. Starting fluid told me that faster than I can type this out. Wow. I remember bumping the tank good removing the plumbers pipe last night to put on dover. Thanks for the info