360 outa whack ??????
Post Fiend
Joined: Jan 2003
Posts: 8,600
Likes: 4
From: Iowa
I have a vacuum gauge hooked up. I hooked it up to the ported vacuum at the carb, and then the vacuum at the manifold.
When hooked up to the carb, at idle it reads zero. Just off idle, it shoots up to about 20"Hg. At all operating conditions thereafter, it acts just like the manifold vacuum, until it goes back to idle or I let off the gas, at which point it goes back to zero.
When hooked to the manifold vacuum, it reads the same as the ported, except it reads actual vacuum at idle.
I'm sorry if I offend you, but YOU ARE MISTAKEN. Vacuum advance DOES NOT function the way you think it does. It exists only to compensate for less dense mixtures. I suggest you do your homework. I've already done mine.
When hooked up to the carb, at idle it reads zero. Just off idle, it shoots up to about 20"Hg. At all operating conditions thereafter, it acts just like the manifold vacuum, until it goes back to idle or I let off the gas, at which point it goes back to zero.
When hooked to the manifold vacuum, it reads the same as the ported, except it reads actual vacuum at idle.
I'm sorry if I offend you, but YOU ARE MISTAKEN. Vacuum advance DOES NOT function the way you think it does. It exists only to compensate for less dense mixtures. I suggest you do your homework. I've already done mine.
Post Fiend
Joined: Jan 2003
Posts: 8,600
Likes: 4
From: Iowa
Whatever. I know what I've observed, and what I've heard, and what I've read. I know my engine runs better with the vacuum advance hooked up to manifold vacuum.
I wonder why, my truck gets 15mpg, sets me back into the seat on acceleration, and chirps the tires on shifts. Sounds like it's running right to me.
I wonder why, my truck gets 15mpg, sets me back into the seat on acceleration, and chirps the tires on shifts. Sounds like it's running right to me.
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