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08-30-2020, 07:07 PM | #1 |
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Model A Distributor with Centrifugal Advance
Is there a 4 cyl distributor with centrifugal advance available at auto wreckers that would fit a Model A (with minimum modifications)?
Thks Sheldon |
08-30-2020, 07:18 PM | #2 |
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Re: Model A Distributor with Centrifugal Advance
Not that I am aware of. Most distributors since the 50s and probably before have a gear on the bottom end of the shaft in the place a shaft retainer would be on the Model A. Also a lot of these distributors are longer than the Model A too - they have the length of both shafts built into the housing.
If you want centrifugal advance, go find a Mallory or B distributor.
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08-30-2020, 09:44 PM | #3 |
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Re: Model A Distributor with Centrifugal Advance
How about this? I do not know how well they work.
https://www.nurex.com/automatic-spar...-advance-12176 |
08-30-2020, 10:10 PM | #4 | |
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Re: Model A Distributor with Centrifugal Advance
Quote:
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08-30-2020, 10:30 PM | #5 |
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Re: Model A Distributor with Centrifugal Advance
In the current market these days I have found that VW and MG distributors can be modified to work
After the machine work is done the advance curve will need attention John
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08-30-2020, 10:41 PM | #6 |
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Re: Model A Distributor with Centrifugal Advance
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08-30-2020, 10:42 PM | #7 |
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Re: Model A Distributor with Centrifugal Advance
Maybe try Do a google search for Nu-Rex www.nurex.com on line catalog Featured products - Automatic Spark Timing system. or Browse timing |
08-30-2020, 10:59 PM | #8 |
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Re: Model A Distributor with Centrifugal Advance
I had heard early datsuns can be altered but the advance curve is wrong. Model B curve is correct but have design issues. FSI uses hall effect adaptive dwell.Period Mallory distributors for model A, Y 11 series are out there in dual or single point setups.
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08-30-2020, 11:38 PM | #9 | |
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Re: Model A Distributor with Centrifugal Advance
Quote:
http://www.fordgarage.com/pages/nurexadvance.htm
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08-31-2020, 03:24 AM | #10 |
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Re: Model A Distributor with Centrifugal Advance
Prewar English small Fords had a distributor which is a straight drop in . They are fairly common at swap meets here You have to check the rotation as this small engine went to a chain drive camshaft there is an arrow on the rotor to indicate rotation .They should be about in the Antipodies (have I spelt that right ???)My son has one in his pickup and it works a treat . I cant recall what the advance is I must check .
John in sunny cool morning Suffolk County England . |
08-31-2020, 07:22 AM | #11 |
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Re: Model A Distributor with Centrifugal Advance
The correct spark advance is 1 degree per 100 rpm,peak at 24 to 26 degrees max.Besides drivability mechanical advance eliminates detonation or spark knock, a cause of bearing failure.High compression reduces the tolerance for improper timing.The increase in engine efficiency is noticeable.
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09-04-2020, 03:27 AM | #12 |
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Re: Model A Distributor with Centrifugal Advance
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09-04-2020, 08:10 AM | #13 |
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Re: Model A Distributor with Centrifugal Advance
I use the nu-rex advance on my 2 A's-- they are a great upgrade and easy to install.
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09-04-2020, 09:38 AM | #14 |
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Re: Model A Distributor with Centrifugal Advance
B points and condenser hard to find as well,along with a few internals.The B distributor has a design flaw,the breaker plate shaft/drive shaft get no lubrication and is small in diameter..you can get oil to it through modification.The FSI electronic distributor,either zipper A style or the stand alone industrial body style uses a hall effect style pickup and has adaptive dwell,spot on coil soak everytime.The biggest problem with the pertronix/FSI pickups is the need for clear voltage signal,tying it in with an old sketchy harness and grounds leads to failure.
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09-04-2020, 10:06 AM | #15 |
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Re: Model A Distributor with Centrifugal Advance
Me too. And as a side benefit it is fun to watch 'Ace Mechanics' in the group try to explain why I have so much "play" in my distributor drive.
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09-04-2020, 04:16 PM | #16 |
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Re: Model A Distributor with Centrifugal Advance
A friend got a Nurex advance with his new rebuilt engine and he likes it.
Had it a couple of years. John
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09-04-2020, 04:48 PM | #17 |
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Re: Model A Distributor with Centrifugal Advance
The advance built into these distributors is set for a standard engine with a standard head. We know that as compression rises, less advance is needed.
Does anybody have an idea on how much less advance is needed for a 5.5:1 head? Same question for other after market heads that are available all the way up to about 8 or 9 to 1.
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09-04-2020, 08:52 PM | #18 | |
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Re: Model A Distributor with Centrifugal Advance
Quote:
Charlie Stephens |
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09-04-2020, 09:58 PM | #19 |
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Re: Model A Distributor with Centrifugal Advance
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09-05-2020, 06:42 AM | #20 | |
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Re: Model A Distributor with Centrifugal Advance
Quote:
I suggested that they say that in there advertising it is not intended for HC heads, but that went to deaf ears. |
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