The Ford Barn

chiefdave · 10-20-2019, 10:35 AM

The lower cap for my Mallory zc275 distributor has one of the threads stripped out on one of the holes. Has anyone repaired on of these? It does have 4 1/2 good threads left at the bottom and I could use a longer screw but don't know if that would be sufficient to hold it down. I hate to go with the MA5 cap and MA7 rotor and lose the vintage look.

BUBBAS IGNITION · 10-20-2019, 10:52 AM

Use a longer screw , but be carefull as the screw can go all the way thru the cap. And i have a box full of good used bottoms etc if ya need one ????????

Ronnieroadster · 10-20-2019, 11:07 AM

In the past when i had one with a completely striped out thread i just went to the next size screw diameter I taped the now striped hole and opened up the hole size slightly on the top section.

Not sure but I think the present size is 8/32 i used a 10/32 for the new size.
Ronnieroadster

Fordors · 10-20-2019, 05:23 PM

Just to let anyone interested in the NAPA Echlin MA5 cap and MA7 rotor I bought the last rotor from warehouse stock a couple years ago. I just did a search for the cap and that shows as “No stock” now also. It may be possible to find them in a local store’s stock so I’d suggest checking soon.
The rotor is an exact replacement for the Mallory, while the cap has towers, it is not a flat cap design.

Jake 48 · 12-21-2019, 12:29 PM

Looking for help finding a replacement for the NAPA Echlin MA5 cap and MA7 rotor their out of production. Has anyone been able to find a new replacement that fits a Mallory YB 247AX?

tubman · 12-21-2019, 12:40 PM

Sponsored Links (Register now to hide all advertisements)

Have you tried Summit? I bought a cap and rotor for a vintage Mallory distributor from them about a year ago. To find the proper fitment, you may have to use the later part number. (Mallory went from the YA-,ZC-, etc. part numbers to things like 25nnn at some time in the process.)

The only thing was it was a horrible blue plastic. I painted it black with some paint made specifically for plastic. So far, so good.

Fordestes · 12-21-2019, 05:02 PM

There is an MA 5 Cap at a Napa warehouse in Alabama, what city they won't tell me , you may have your local store check again, I bought a dozen from Germany last year, can't find anymore but the one listed on Napa inventory in Ala. if you can't locate elsewhere , there are two versions one is vented and other non vented pn. MA5 and MA9. I think there is a short tower and tall tower not sure.

Fordestes · 12-21-2019, 05:22 PM

Jake , what part of Okla. are you in ? the store on Memorial Road in Okla.City is where I buy most of my n.a.p.a parts . They do an excellent job of getting what you need.405-415-6272

Jake 48 · 12-22-2019, 01:40 PM

Thanks for your help
I’m in Norman OK, the local Napa has a call into the warehouse. They said there are probably none there. Just hoping someone knew of a replacement for the MA5 or MA9, or maybe what else besides the Mallory theses fit.

petes 50 merc · 12-22-2019, 03:32 PM

there is a nos one on ebay #303321696906

Fordestes · 12-22-2019, 05:49 PM

I'll se what I have out in the whs. I am pretty certain I have a good used ma 5 cap .I am over near thunderbird near Indian hills, see my private message. I called after the post yesterday and they said one was still in Ala. warehouse. good luck

Fordestes · 12-22-2019, 06:07 PM

Jake there is an Ma 5 listed ebay number2234416170905, it is in Australia, looks like about $60 u.s , shipped to U.S.A.

BUBBAS IGNITION · 12-23-2019, 07:52 AM

Guys i just search and buy the orginal flat top cap by buying a complete distributor on ebay. You can get a deal on them from time to time.....The MA5 is just a normal type cap not the flat top Mallory.........

Heres the deal of the day :
https://www.ebay.com/itm/Vintage-Mal...ty!46224!US!-1

and then you can machine this one to fit the flathead as well ????

We just light glass bead the old cap and spray with clear coat. Inspect the center carbon button and use them again they work very well...... brass contact dont seem to wear out...

Jake 48 · 12-23-2019, 04:45 PM

Thanks all for the inputs, as Bubba recommended i’ve bought a complete distributor just for the flat top cap. Bubba I’ll be in touch to get my Mallory YB 247AX freshened up once I have the cap in hand.

chiefdave · 12-23-2019, 10:51 PM

I took the distributor to a local mechanic (not a tech) to check the curve. He noticed and repaired the lower cap and charged a total of nothing. He's an old time hot rodder who loves flatheads. The car runs great now.

10-20-2019, 10:35 AM	#1
chiefdave Member Join Date: Oct 2019 Location: Warsaw, MO Posts: 52	Mallory 4004 distributor cap The lower cap for my Mallory zc275 distributor has one of the threads stripped out on one of the holes. Has anyone repaired on of these? It does have 4 1/2 good threads left at the bottom and I could use a longer screw but don't know if that would be sufficient to hold it down. I hate to go with the MA5 cap and MA7 rotor and lose the vintage look.

10-20-2019, 10:52 AM	#2
BUBBAS IGNITION Senior Member Join Date: May 2010 Location: SPEEDWAY INDIANA Posts: 4,148	Re: Mallory 4004 distributor cap Use a longer screw , but be carefull as the screw can go all the way thru the cap. And i have a box full of good used bottoms etc if ya need one ???????? __________________ If it Makes Spark, we do it !!!! www.bubbasignition.com [email protected]

10-20-2019, 05:23 PM	#4
Fordors Senior Member Join Date: May 2010 Location: Orland Park,IL Posts: 1,402	Re: Mallory 4004 distributor cap Just to let anyone interested in the NAPA Echlin MA5 cap and MA7 rotor I bought the last rotor from warehouse stock a couple years ago. I just did a search for the cap and that shows as “No stock” now also. It may be possible to find them in a local store’s stock so I’d suggest checking soon. The rotor is an exact replacement for the Mallory, while the cap has towers, it is not a flat cap design. __________________ My school colors are black and blue, I attended the School of Hard Knocks where I received a Masters Degree in Chronic Mopery.

12-21-2019, 12:29 PM	#5
Jake 48 Junior Member Join Date: Jan 2018 Location: OK Posts: 3	Re: Mallory 4004 distributor cap Looking for help finding a replacement for the NAPA Echlin MA5 cap and MA7 rotor their out of production. Has anyone been able to find a new replacement that fits a Mallory YB 247AX?

12-21-2019, 12:40 PM	#6
tubman Senior Member Join Date: Dec 2013 Location: Minnesota, Florida Keys Posts: 10,302	Re: Mallory 4004 distributor cap Sponsored Links (Register now to hide all advertisements) Have you tried Summit? I bought a cap and rotor for a vintage Mallory distributor from them about a year ago. To find the proper fitment, you may have to use the later part number. (Mallory went from the YA-,ZC-, etc. part numbers to things like 25nnn at some time in the process.) The only thing was it was a horrible blue plastic. I painted it black with some paint made specifically for plastic. So far, so good.

10-20-2019, 11:07 AM	#3
Ronnieroadster Senior Member Join Date: Dec 2010 Location: East Coast in CT Posts: 1,524	Re: Mallory 4004 distributor cap In the past when i had one with a completely striped out thread i just went to the next size screw diameter I taped the now striped hole and opened up the hole size slightly on the top section. Not sure but I think the present size is 8/32 i used a 10/32 for the new size. Ronnieroadster __________________ I use the F word a lot no not that word these words Flathead , Focus and Finish. "Life Member of the Bonneville 200 MPH Club using a Ford Flathead block" Owner , Builder, Driver of the First Ford Flathead bodied roadster to run 200 MPH Record July 13, 2018 LTA timing association 200.921 in one and a half miles burning gasoline. First ever gas burning Ford flathead powered roadster to run 200 MPH at Bonneville Salt Flats setting the record August 7th 2021 at 205.744 MPH

12-21-2019, 05:02 PM	#7
Fordestes Senior Member Join Date: May 2010 Posts: 886	Re: Mallory 4004 distributor cap There is an MA 5 Cap at a Napa warehouse in Alabama, what city they won't tell me , you may have your local store check again, I bought a dozen from Germany last year, can't find anymore but the one listed on Napa inventory in Ala. if you can't locate elsewhere , there are two versions one is vented and other non vented pn. MA5 and MA9. I think there is a short tower and tall tower not sure. Last edited by Fordestes; 12-21-2019 at 05:08 PM.

12-21-2019, 05:22 PM	#8
Fordestes Senior Member Join Date: May 2010 Posts: 886	Re: Mallory 4004 distributor cap Jake , what part of Okla. are you in ? the store on Memorial Road in Okla.City is where I buy most of my n.a.p.a parts . They do an excellent job of getting what you need.405-415-6272

12-22-2019, 01:40 PM	#9
Jake 48 Junior Member Join Date: Jan 2018 Location: OK Posts: 3	Re: Mallory 4004 distributor cap Thanks for your help I’m in Norman OK, the local Napa has a call into the warehouse. They said there are probably none there. Just hoping someone knew of a replacement for the MA5 or MA9, or maybe what else besides the Mallory theses fit.

12-22-2019, 03:32 PM	#10
petes 50 merc Member Join Date: May 2010 Location: Northern California Posts: 44	Re: Mallory 4004 distributor cap there is a nos one on ebay #303321696906

12-22-2019, 05:49 PM	#11
Fordestes Senior Member Join Date: May 2010 Posts: 886	Re: Mallory 4004 distributor cap I'll se what I have out in the whs. I am pretty certain I have a good used ma 5 cap .I am over near thunderbird near Indian hills, see my private message. I called after the post yesterday and they said one was still in Ala. warehouse. good luck

12-22-2019, 06:07 PM	#12
Fordestes Senior Member Join Date: May 2010 Posts: 886	Re: Mallory 4004 distributor cap Jake there is an Ma 5 listed ebay number2234416170905, it is in Australia, looks like about $60 u.s , shipped to U.S.A.

12-23-2019, 07:52 AM	#13
BUBBAS IGNITION Senior Member Join Date: May 2010 Location: SPEEDWAY INDIANA Posts: 4,148	Re: Mallory 4004 distributor cap Guys i just search and buy the orginal flat top cap by buying a complete distributor on ebay. You can get a deal on them from time to time.....The MA5 is just a normal type cap not the flat top Mallory......... Heres the deal of the day : https://www.ebay.com/itm/Vintage-Mal...ty!46224!US!-1 and then you can machine this one to fit the flathead as well ???? We just light glass bead the old cap and spray with clear coat. Inspect the center carbon button and use them again they work very well...... brass contact dont seem to wear out... __________________ If it Makes Spark, we do it !!!! www.bubbasignition.com [email protected]

12-23-2019, 04:45 PM	#14
Jake 48 Junior Member Join Date: Jan 2018 Location: OK Posts: 3	Re: Mallory 4004 distributor cap Thanks all for the inputs, as Bubba recommended i’ve bought a complete distributor just for the flat top cap. Bubba I’ll be in touch to get my Mallory YB 247AX freshened up once I have the cap in hand.

12-23-2019, 10:51 PM	#15
chiefdave Member Join Date: Oct 2019 Location: Warsaw, MO Posts: 52	Re: Mallory 4004 distributor cap I took the distributor to a local mechanic (not a tech) to check the curve. He noticed and repaired the lower cap and charged a total of nothing. He's an old time hot rodder who loves flatheads. The car runs great now.

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