Another Lars/Forum Thanks
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Instructor
Joined: Feb 2003
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From: Tee Tops off all year FL
Another Lars/Forum Thanks
Well just wanted to give an update on my carb saga. I had a qjet donated by a new member from Jax (thanks Joe S.) and sent to Lars. Got her back and installed on my vette. AWSOME WOT performance. Thanks again to LARS, Joe S., and Paul L. (loaner carb). It's good to be running solid again. :party:
Thread Starter
Instructor
Joined: Feb 2003
Posts: 238
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From: Tee Tops off all year FL
Re: Another Lars/Forum Thanks (lars)
Been slammed at work for the last couple months and have not had any time at all for working on the vette. I had a chance to adjust the idle mixture today for the first time and she seems to be running much smoother.
I noticed that the vacuum line going to the vacuume advance has vacuum at idle, is that correct? I thought that the vacuum should only come in as you get on it.:flag
[Modified by Dk Met Grn 80 L82, 7:42 PM 5/7/2004]
I noticed that the vacuum line going to the vacuume advance has vacuum at idle, is that correct? I thought that the vacuum should only come in as you get on it.:flag
[Modified by Dk Met Grn 80 L82, 7:42 PM 5/7/2004]
Intermediate
Joined: Mar 2004
Posts: 44
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From: Mt. Clemens MI
Re: Another Lars/Forum Thanks (Dk Met Grn 80 L82)
My 1980 L-48 has vac advance hooked up to manifold vacuum (full time vacuum, even at idle) also. I questioned this, when I contacted Lars, he said it was correct. Perhaps your 1980 L-82 is correct as well and not supposed to be on ported vacuum (part time, no vac at idle)
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Joined: May 2003
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From: Wilmington DE
Re: Another Lars/Forum Thanks (WarBound)
The vacuum advance works by giving the ignition lots of advance under idle and cruise conditions to improve gas mileage. This much advance would cause spark knock under WOT conditions. Therefore, you should have max vacuum going to the distributor at idle and it should drop off as you accelerate, at which point the mechanical advance takes over.
