The Ford Barn

Ritzy1 · 07-30-2019, 07:37 PM

Thanks again for all the feedback. As many of you know, these carbs come with .045 jets. Since I'm a rookie with flatheads, I consumed Vern Tardel's book How to Rebuild and Modify Ford Flathead V-8 Engines. That became my bible. In there, he recommended starting with .041 jets with a dual carb setup at sea level, which is what I did. When I first started it up, it went way hot, so I changed back to the .045 jets. After some tuning by John Freeman at Freeman's Garage (authorized Stromberg distributor), we decided to put the .041s back in. There may indeed be a happy medium (.043). Again, it's only been on the road for two weeks, so I'm still sorting. I do love how it cruises along effortlessly on a flat highway at low RPM in 5th, but I realize I've got to raise the RPM up for when I come to a hill. So far, I've just been dropping it down a gear if it starts to lug. I think I've yet to get it above 3,500 RPM in any gear.

40cpe, I'll test your equation when I take it for a spin later this week, and let you know the result.

07-30-2019, 07:37 PM	#25
Ritzy1 Senior Member Join Date: Feb 2016 Location: Plymouth, MA Posts: 207	Re: How hot is too hot? Thanks again for all the feedback. As many of you know, these carbs come with .045 jets. Since I'm a rookie with flatheads, I consumed Vern Tardel's book How to Rebuild and Modify Ford Flathead V-8 Engines. That became my bible. In there, he recommended starting with .041 jets with a dual carb setup at sea level, which is what I did. When I first started it up, it went way hot, so I changed back to the .045 jets. After some tuning by John Freeman at Freeman's Garage (authorized Stromberg distributor), we decided to put the .041s back in. There may indeed be a happy medium (.043). Again, it's only been on the road for two weeks, so I'm still sorting. I do love how it cruises along effortlessly on a flat highway at low RPM in 5th, but I realize I've got to raise the RPM up for when I come to a hill. So far, I've just been dropping it down a gear if it starts to lug. I think I've yet to get it above 3,500 RPM in any gear. 40cpe, I'll test your equation when I take it for a spin later this week, and let you know the result.