Re: Distributor question
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Home away from home
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The distributor drive shaft is driven off a gear on the cam shaft and it would be possible to install it one or more teeth out. The two gears have helical teeth allowing them to mesh with their axes at 90 deg. The gear for the drive shaft has a square hole that receives the square drive shaft. The top of that shaft has an offset slot . So there are 4 positions for the drive shaft in the gear and two for the distributor to the shaft. You can simply lift out the drive shaft and refit it in any of the 4 positions then try the distributor in either of the two positions. I don't know if that will improve your problem. Simple enough to try.
Removing or re-timing the distributor drive gear would require you to separate the crankcase from the cylinder block . That is unthinkable compared to using longer HT wires. This all from memory some time ago on my earlier model cars but I am guessing the 740 is the same.
Posted on: 2018/7/31 18:59
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Re: Distributor question
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Home away from home
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Thank you David for clarifying how the mechanism is set up. I shall go out and try each configuration. Hopefully one will solve the problem!
Posted on: 2018/7/31 19:29
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Rob
1930 Custom 8 Club Sedan |
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Re: Distributor question
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Forum Ambassador
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Doesn't the offset driving groove in the top of the shaft limit you to just one position there, not two?
Posted on: 2018/7/31 20:14
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Re: Distributor question
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Home away from home
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Yes of course, I would like to say I was testing if anyone was paying attention but I just wasn't thinking.
Posted on: 2018/8/1 6:07
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Re: Distributor question
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Home away from home
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I checked and it quickly became clear that only 90 degree changes could be made. The drive gear must have been mounted 45 degrees off when the engine was re-built. Longer plug wires will do for the short term. Later, for a more proper looking arrangement, I could have a new shaft made with the top in the proper position.
Posted on: 2018/8/1 12:23
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Rob
1930 Custom 8 Club Sedan |
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Re: Distributor question
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Quite a regular
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I noticed your topic, and will be soon installing a distributer gear in a 1936, 385. I haven't analyzed it much yet, but was wandering is there an installation procedure for it, so it is clocked at the right position?
Has anyone ever seen a chronological assembly procedure for a 385 like more modern engines have? I've found a little in a motors manual, and some service bulletins but not much else. thanks
Posted on: 2018/8/30 15:02
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