spark Advance Will too much spark advance (30 degrees+) increase the combustion chamber
temperature on my Model A engine? Durango |
Re: spark Advance In general, yes.
There are other factors that will also influence combustion chamber temperature, such as fuel/air mixture, compression ratio. . |
Re: spark Advance Actually late timing will increase combustion temps. Advance in the mid-30's is just fine.
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Yep. In fact, an old trick to get more heat from an exhaust manifold heater was to drive with the timing lever up. You could get the manifold to glow red! |
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Sure tells the story, WHEN YOUR HOT YOUR HOT! Thanks for sharing |
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Boy that'll warm ya up on a cool day ! |
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Re: spark Advance I wouldn't want mine to get so hot that the exhaust manifold glowed red hot .
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Then after several more timing jobs and playing around with the carburetor settings, I finally got the red out without resorting to using Visine...... That was over 35 years ago and I think I haven't had that issue since. :D Thanks to all of the good guys that are teaching us all how to PROPERLY time the rotor / disti. Several good and different timing methods are out there but use what works best for you... |
Re: spark Advance I am at a total loss for words.
60 years with these cars. Never have I seen anything like that. Why! Enjoy. |
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Late timing and lean mixture. |
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I would love to hear the reason. Enjoy. |
Re: spark Advance It's probably not intentional. I'd say someone forgot to advance the ignition but kept driving at fairly high speed - well, as fast as they could go with the timing that retarded. Maybe the GAV was screwed too far in and maybe it all happened on a tour?
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Re: spark Advance Will too much spark advance (30 degrees+) increase the combustion chamber
temperature on my Model A engine? Durango The max advance with a stock distributor is 20 degrees which is 40 degrees at the crankshaft. 30 degrees at the crankshaft is only 15 degrees at the distributor and is good for low speed driving. Please explain where the 30 degrees advance is applicable to. |
Re: spark Advance There will be a very noticeable loss in power before the exhaust manifold begins to turn red . I adjust the distributor cam so that the trailing edge of the rotor tip points at the number one contact in the distributor cap when the timing pin drops in the dimple on the cam timing gear . I adjust the points gap at a maximum gap of twenty two thousands and the timing will be very good .
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Well I'd like to hear the reason too. They probably don't mean to do it, they just forget, or don't know. It can start from improper base timing as some seem to have trouble with that. |
Re: spark Advance There is a Gentleman on YouTube that is saying he adjusts his timing by first setting the spark control down one click rather then having it set to the absolute top as most do.
Has anyone tried this and if so is there any great improvement of power etc.? |
Re: spark Advance If the starter bucks when attempting to start the engine , the initial timing is too advanced or the spark lever isn't properly retarded . I fully retard the spark lever when starting the engine . Ford said full advance at speed .
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Thats fine, it doesn't make much difference, it's a couple degrees. |
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