The Ford Barn

Stage1gs · 04-09-2023, 07:30 PM

Hello.. have a model a with a 6-1 head, big valves, touring cam, lightened flywheel, T-5 and a model B carb. Jets were flow tested but that’s just a starting point. I ran at 45 mph steady for 5 miles and turned the key off and coasted to the side of the road, and then pulled the plugs. White as can be. So I opened the main jet up by about 15 ml’s and did it again. Plugs are still really white. Looking for some tan color.

Is the main jet the correct jet for me to be adjusting in this scenario on a B carb?

Stage1gs

04-09-2023, 07:30 PM	#1
Stage1gs Member Join Date: Nov 2014 Location: Grant, FL Posts: 37	B Carb Runs Lean @45 MPH Hello.. have a model a with a 6-1 head, big valves, touring cam, lightened flywheel, T-5 and a model B carb. Jets were flow tested but that’s just a starting point. I ran at 45 mph steady for 5 miles and turned the key off and coasted to the side of the road, and then pulled the plugs. White as can be. So I opened the main jet up by about 15 ml’s and did it again. Plugs are still really white. Looking for some tan color. Is the main jet the correct jet for me to be adjusting in this scenario on a B carb? Stage1gs