LM 1 users. Ihave a question
Le Mans Master
Joined: Dec 2003
Posts: 5,727
Likes: 38
From: Fremont CA
AF ratio will vary with engine demands, if your on a absolutley flat surface, it should run pretty steady. The richness under braking is fuel splashing out of you bowl vent tubes into carb (it is a Holley right?) You can cure braking splash by connecting both vent tubes with a piece of tubing and putting some vent holes in the tubing at the high point AWAY from the throttle/veturii area towards the air cleaner. Constant throttle AF change can also be intake manifold distribution problems, engine problems, fuel pressure fluctuation. I LOVE my LM-1 but be careful while driving if you don't have data logger into laptop.
Race Director
Joined: Nov 1999
Posts: 10,643
Likes: 8
From: Foxfield CO 1970 Convertible
Wait a minute. That means if I were to suddenly switch to E85 (fat chance), then I would still try to tune to 14.7, even though the ratio is 9.8 or whatever. We have to run E10 here in CO, so if my idle display says 14.7, it's actually 14.2 with E10, right? Pretty nice not to have to do anything different...
