Re: Ignition Timing
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Re: Ignition Timing



Holley's also have a tiny set screw in the secondaries to open them slighly at idle to provide that extra air so you can close the primaries down...
 
https://goo.gl/images/KsvZWj
 
Darwin/BC/Canada
----- Original Message -----
Sent: Sunday, September 24, 2017 12:08 PM
Subject: Re: Ignition Timing

Thanks,

Good video but he lost me at the very end.  He said to drill all 4 butterflies even with vacuum secondaries however in the video it did not look like he drilled the secondaries on the vacuum carburator? 

Dennis C.

On Sunday, September 24, 2017 at 11:31:35 AM UTC-7, JimJablonski wrote:
I found this fella's video useful on this topic ... and kinda funny at the same time :-)

https://youtu.be/JDPwY0LbRVY




On Sunday, September 24, 2017 at 12:58:54 PM UTC-4, Mike wrote:
No idle mixture changes is also due to excess throttle plate opening. The carb starts pulling fuel thru the transfer slots and bypasses the idle circuit, hence no mixture screw response.
Mike

On Sun, Sep 24, 2017 at 10:00 AM, 'Paul L. http://1962to1965mopar.ornocar.org/ml-le' via The 1962 to 1965 Mopar Mail List Clubhouse <1962to19...@xxxxxxxxxxxxxxxx> wrote:
Not being much of a carb tuner I have had questions about this Holley Street Avenger since trying to get it set up on my car.  I bought it used on ebay.  I found that I could turn the air mixture screws in all the way without making any diference.  I followed the Holley tuning guide and did change the power valve to one that my results suggested I should be using.  The slots in the primary venturi seem to be partly exposed (eyesight not what it used to be) with the plates fully closed.  Not sure if this relates to what Mike is talking about.  But there is definitely something goofy with this carb and i'd like to get to the bottom f it.

Paul L.

On Sunday, September 17, 2017 at 12:50:42 PM UTC-5, Paul L. http://1962to1965mopar.ornocar.org/ml-le wrote:

I've heard some differing info over the years on ignition timing.  I was talking to MO recently, and the guy who set up his distributor on his machine made the comment that setting "x" was all wrong for a manual transmissi on.  So I'm wondering if there is a difference in what you do for manual vs. automatic.  Right now I've got mine set at 32* BTDC all in at @ 2500.  This is 440 primarily street driven car with a bit of a cam.  I had been running with the vacuum advance plugged off.  I recently checked the timing because I was able to borrow a timing light.  I had a crappy one when I set it before.  It was retarded about 8* so more like 25* BTDC.  So I reset it and the result was that it seemed to run a little better but I had developed a slight bog from a stop.  So I'm wondering where I should go from here?   Should I hook up the vacuum advance and reset the total advance?  BTW it didn't seem to make any difference on my issue with running hot in town

Paul L.

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1962 to 1965 Mopar Clubhouse Discussion Guidelines:
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Please address private email -- email of interest to only one person -- directly to that person. That is, email your parts/car transactions and negotiations, as well as other personal messages, only to the intended recipient. Do not just press "reply" and send your email to everyone using the general '62-'65 Clubhouse public email address. This practice will protect your privacy, reduce the total volume of mail and fine-tune the content signal to Mopar topic. Thanks!
 
1962 to 1965 Mopar Clubhouse Discussion Guidelines:
http://www.1962to1965mopar.ornocar.org/mletiq.html and http://www.1962to1965mopar.ornocar.com/general_disclaimer.html.
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