Getting hot, c clip adjustment?
- Thread starter Woody236
- Start date
CarlsonMotorsports
Site Supporter
Shouldn't be necessary. These engines are built very conservatively so that they typically don't run hot and damage things. You generally tune the carb for air density more than temperature (although air temp does affect the tune slightly.)
If the air density goes down with higher temps, then you would want to LEAN the carb mixture by raising the clip on the needle.
If the air density increases with higher temps, then you would RICHEN the carb mixture by lowering the clip on the needle.
Watch your local forecast and note how they discuss HIGH pressure and LOW pressure (barometric pressure) fronts.
Buying a quality air density gauge will help you tremendously. A simple analog (dial) Kinsler AD gauge works great and will help you with tuning tremendously.
-----
Thanks and God bless,
Brian Carlson
Carlson Racing Engines
Vector Cutz
www.CarlsonMotorsports.com
Carlson Motorsports on Facebook
33 years of service to the karting industry ~ 1Cor 9:24
Linden, IN
765-339-4407
bcarlson@CarlsonMotorsports.com
If the air density goes down with higher temps, then you would want to LEAN the carb mixture by raising the clip on the needle.
If the air density increases with higher temps, then you would RICHEN the carb mixture by lowering the clip on the needle.
Watch your local forecast and note how they discuss HIGH pressure and LOW pressure (barometric pressure) fronts.
Buying a quality air density gauge will help you tremendously. A simple analog (dial) Kinsler AD gauge works great and will help you with tuning tremendously.
-----
Thanks and God bless,Brian Carlson
Carlson Racing Engines
Vector Cutz
www.CarlsonMotorsports.com
Carlson Motorsports on Facebook
33 years of service to the karting industry ~ 1Cor 9:24
Linden, IN
765-339-4407
bcarlson@CarlsonMotorsports.com
Brian is correct. If you raise the clip on the needle you are dropping the needle and leaning it out.
Last edited:
Air density was what I was implying, sorry I wasn't more clear. So going from 60-70dgs to 90-100dgs with dry air is what I meant to ask. Thanks for the reply.Shouldn't be necessary. These engines are built very conservatively so that they typically don't run hot and damage things. You generally tune the carb for air density more than temperature (although air temp does affect the tune slightly.)
If the air density goes down with higher temps, then you would want to LEAN the carb mixture by raising the clip on the needle.
If the air density increases with higher temps, then you would RICHEN the carb mixture by raising the clip on the needle.
Watch your local forecast and note how they discuss HIGH pressure and LOW pressure (barometric pressure) fronts.
Buying a quality air density gauge will help you tremendously. A simple analog (dial) Kinsler AD gauge works great and will help you with tuning tremendously.
-----
Brian Carlson
Carlson Racing Engines
Vector Cutz
www.CarlsonMotorsports.com
Carlson Motorsports on Facebook
33 years of service to the karting industry ~ 1Cor 9:24
Linden, IN
765-339-4407
bcarlson@CarlsonMotorsports.com
Last edited:
Freezeman
Site Supporter
Yes that was correct. It was his next statement where he typed,
"If the air density increases with higher temps, then you would RICHEN the carb mixture by raising the clip on the needle."
that is not correct.
Woody236, Air density generally goes down as temp raises, so with less dense air you would lean the amount of fuel in order to keep the same fuel to air ratio that is feeding the motor.
CarlsonMotorsports
Site Supporter
^ -- fingers going faster than the brain (raise the clip = lower the needle = LEANER.) As if it isn't confusing enough to newbies, and I bonehead it like that. Thanks for pointing that out, Freeze.
Commencing opening can of worms:
What is your preferred method of carb tuning on the 206:
Needle Adjustment
Float Height adjustment
I have seen some tuners focus almost solely on float height and others almost strictly on needle height.
I generally work more with the needle. I find that adjusting the float, especially when richening, I can get the dreaded slosh over effect and get a missfire middle out. I typically set the float as rich as I can without getting the bog and the tune with the needle. If I need to be in p1 (top) and the plug still shows rich, then I will lower the float until the plug leans out and then begin tuning with the needle again. Not saying this is right, just what I have been doing.
What is your preferred method of carb tuning on the 206:
Needle Adjustment
Float Height adjustment
I have seen some tuners focus almost solely on float height and others almost strictly on needle height.
I generally work more with the needle. I find that adjusting the float, especially when richening, I can get the dreaded slosh over effect and get a missfire middle out. I typically set the float as rich as I can without getting the bog and the tune with the needle. If I need to be in p1 (top) and the plug still shows rich, then I will lower the float until the plug leans out and then begin tuning with the needle again. Not saying this is right, just what I have been doing.