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06-26-2019, 08:27 AM | #1 |
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Join Date: May 2010
Location: shirley ny
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mallory point gap
I have the newer style Mallory dual point dist in a 50 merc engine and need to know the point gap.thanks
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06-26-2019, 08:34 AM | #2 |
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Location: East Hartford, Ct
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Re: mallory point gap
Seem to recall .018-.022 but maybe someone else knows for sure.
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06-26-2019, 09:04 AM | #3 |
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Location: Coral Springs FL
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Re: mallory point gap
51MERC has a good memory. For my Mallory dual point distributor # YL 2527501 the instructions say to set points at .022 " with a dwell of 26 degrees each and a total dwell of 31-36 degrees. I set gap at .019". I used NAPA points Eichlen CS 2301 and Eichlen condenser MA3 .25 to .28 MFD.
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06-26-2019, 09:19 AM | #4 |
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Location: shirley ny
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Re: mallory point gap
thanks guys I have them set at 016 and getting a ping I will open them up to .020 and and recheck timing also
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06-26-2019, 12:10 PM | #5 |
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Location: Coral Springs FL
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Re: mallory point gap
With today's gas you never know.
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06-26-2019, 12:20 PM | #6 |
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Re: mallory point gap
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Put some fuel in that hole for slight ping..... |
06-26-2019, 12:23 PM | #7 |
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Re: mallory point gap
Really hate to see anyone adjusting timing with dwell.. A timing light does it so much better. A 2 degree change in dwell will change timing 4 degrees, however it will effect coil saturation and build up time. Dwell should remain fixed for proper coil function.
Put some fuel in that hole for slight ping..... The newer Mallorys seem to have a bit too much mechanical advance and are adjustable on the car by bending the spring tabs out ward to limit the advance.. Look into the breaker plate hole and id the springs , one is haevier than the other , if the ping is light throttle just position spring and tab under the inspection hole and use a screw driver to slightly bend the spring tab out ward and test drive . Ping under heavy throttle bend the heavy spring .......works like a champ....... |
06-26-2019, 12:35 PM | #8 |
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Re: mallory point gap
Thanks Bubba. You're the King of Spark.
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06-26-2019, 04:09 PM | #9 |
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Join Date: Dec 2013
Location: Minnesota, Florida Keys
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Re: mallory point gap
I have two "later" Mallory's (with the red cap). The first one I bought came with a "key" (a piece of stepped plastic) that you could use to limit the total advance. If your "early late" Mallory has one of these, use it and you'll be fine. If you have a "late late" Mallory, follow Bubba's advice.
Last edited by tubman; 06-27-2019 at 08:48 AM. |
06-27-2019, 06:52 AM | #10 |
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Join Date: May 2010
Location: Coral Springs FL
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Re: mallory point gap
tubman: My Mallory came with one of those little stepped plastic keys. Did that distributor come correctly preset from Mallory? I never used that key. Should I have? It is a stock 8BA with a 390 Holley. Thanks.
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06-27-2019, 07:16 AM | #11 |
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Location: Minnesota, Florida Keys
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Re: mallory point gap
I believe mine came correctly set from the factory, but that does not mean yours was. I would at least use the "key" to check it. Do you have the instructions that came with the distributor? IIRC, they have a section on how to use that "key". If not, it's self-explanatory, as I believe the "key" has the advance marked on it (it fits in an opening in the breaker plate). I think I have a set of Mallory instructions in my shop somewhere; the problem is finding them.
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06-27-2019, 08:26 AM | #12 |
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Join Date: May 2010
Location: Coral Springs FL
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Re: mallory point gap
Thank you. I think I have the instruction sheet as I saved the box. Will take a look. Appreciate your help. JIM
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