quote:I can tell the engine really comes on hard when the secondaies open. More now than when I had smaller. That's why I put the 76 in the primary from 70. I figure it likes more fuel. No smoke, but it kinda lopes. I installed an A/F gauge but it stays on RICH, execpt for the instant I hit the pedal and open the carb ... The engine works great...but? Is it optimum?
Sounds a bit rich...
Two things. An engine that feels like it's suddenly coming on strong, is not optimum. The reason it suddenly feels strong is that it was relatively weak before. Since we're talking feelings here like a girls' forum, don't conclude too much, but an ideal engine feels equally strong all over. My Pantera felt ok below 4200, and very strong above 4200, would suddenly spin its wheels. I thought it was the cam etc., but eventually found out that the initial timing and curve set by previous owner made it that way. I've changed that now, and now it feels strong all over. Unfortunately I didn't measure, but I'm sure it's overall faster than before.
Second thing, I played with A/F gauges some years ago, it's impossible to fully remove a lean spot when you hit the pedal. If it doesn't bog down, you're OK, and no need to keep it rich to avoid that lean spot on your A/F gauge, it's unavoidable
Good luck, glad it runs better