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06-21-2012, 06:47 PM | #1 |
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Mallory distributor
Is this a correct Mallory for a 49-53 Flathead? Is that what the model # ZB stands for? And what are the 2 ports for? Vacuum line? Tach drive?
Just wondering..
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1940 Mercury Looking for DENVER heads - 81AS - 99AS - 19AS |
06-22-2012, 12:39 AM | #2 |
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Re: Mallory distributor
Your distributor is for a 49-54 flatead Ford V8. The hole in the centre close to the bottom of the casting should have an oiler plug in it. The one off to the side opposit the condenser is the vacuum port.
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06-22-2012, 10:01 PM | #3 |
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Re: Mallory distributor
Thanks. So do I just hook up the vacuum line from the carb to this port? Used to the 49-53 loadamatic with the vacuum advance.
this is a stock engine with a single carb.
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1940 Mercury Looking for DENVER heads - 81AS - 99AS - 19AS |
06-23-2012, 06:53 AM | #4 |
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Re: Mallory distributor
I don't know if the Mallory requires ported vacuum (the carb) or manifold vacuum. It may need the stronger signal of the manifold vacuum. Hopefully some of the carb & ignition gurus will chime in here. Charlie? Ken? Bubba?
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06-23-2012, 08:16 AM | #5 |
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Re: Mallory distributor
Strick,
That dist uses manifold vac. If it is like others I've used it has a plunger similar to that used on '32-'48 Ford distributors. By all means disassemble it ,frequently the vac plunger is stuck so be careful. Charlie ny |
06-23-2012, 01:13 PM | #6 |
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Re: Mallory distributor
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1940 Mercury Looking for DENVER heads - 81AS - 99AS - 19AS |
06-23-2012, 03:46 PM | #7 |
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Re: Mallory distributor
Strick,
WD 40 ,that's a good place to start...carefully push the plunger back...assuming it is stuck....and work it back and forth. The spring behind it is not adjustable so I guess what you get for a curve is what you get. Long live the Chevy conversion distributor...not as pretty but mighty effective. Charlie ny |
06-23-2012, 04:45 PM | #8 |
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Re: Mallory distributor
Strick,
I can't believe I just 'said' that....the vac brake is not readily adjustable the curve is quite adjustable....geeze senior moments. Charlie ny |
06-23-2012, 05:00 PM | #9 |
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Re: Mallory distributor
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06-23-2012, 05:50 PM | #10 |
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Re: Mallory distributor
so is this vacuum advance, mechanical advance, or both?
better option than the stock loadamatic dizzy? again, stock engine with single carb. do like the looks of it...
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1940 Mercury Looking for DENVER heads - 81AS - 99AS - 19AS |
06-23-2012, 06:20 PM | #11 |
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Re: Mallory distributor
Strick,
Mechanical adv vacuum controlled brake. Charlie ny |
06-23-2012, 09:14 PM | #12 |
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Re: Mallory distributor
Thanks Charlie.
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1940 Mercury Looking for DENVER heads - 81AS - 99AS - 19AS |
06-24-2012, 10:05 AM | #13 |
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Re: Mallory distributor
No. That Mallory is a centrifugal with a vacuum operated brake. (High vacuum on trailing throttle overcomes the spring pressure on the brake piston and allows an increase in advance). It does NOT want ported vacuum. Tap it into manifold vacuum.
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06-24-2012, 03:04 PM | #14 |
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Re: Mallory distributor
its vacume
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