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-   -   8BA Distributor centrifugal advance (https://www.fordbarn.com/forum/showthread.php?t=76864)

ndp 07-13-2012 06:56 PM

8BA Distributor centrifugal advance
 

Has anyone used a Mallory distributor with centrifugal advance on their 8BA?

BUBBAS IGNITION 07-13-2012 07:09 PM

Re: 8BA Distributor centrifugal advance
 

The addition of a centrifugal advance is a welcome addition to any 8ba flathead, especially one with a inop load a matic unit on it.
We have serviced every available replacement unit for these engines.
Mallorys come new and old with my preference being for the older units as they are usa made with some quality metal insides. Many of the new ones come with very poor advance curves and light weight parts inside.
We make up a chevrolet aluminum conversion thats has a very good mechanical advance as well.
Check the forums and do some looking around there is tons of info on the subject....
Be glad to help in any way i can ....:)

Ol' Ron 07-13-2012 08:06 PM

Re: 8BA Distributor centrifugal advance
 

Bubba offers a modified Chevy distributor with vacuum advance that works wonder in a flathead. with this unit you can Taylor your ignition advance for both power and economy.

Deuce Man 07-13-2012 08:45 PM

Re: 8BA Distributor centrifugal advance
 

Some time back a friend bought a very nice 50 Merc with a high dollar flathead. He could never get it to run decently. Ripped it out and gave it to me for my flathead project. It had two 97's and the original distributor was running on manifold vacuum,[wont work]. I took the catalogs advice where it says" the best thing you can do for your flathead" and bought a Mallory full centrifugal dual point distributor. Started right up, and I drove it many miles. I was never really satrisfied with the performance. If I ran enouugh advance where it started to feel a little more responsive, it sounded like I was going to knock a hole in the top of the pistons. I sent an old chevy distributor to Bubba and had it recurved and cut down to fit my flathead. This was the single biggest improvement I ever did to this car in the 10 or 12 years I have driven it.In the beginning I was like a kid with a new toy. I hammered it quite a bunch, afraid I was going to blow it up I disclipined myself and drove more conservatively. My gas mileage went up a bunch, I just sounds a whole lot sweeter out the back, and has a whole lot more punch, and runs 10-15 degrees cooler! Win-Win situation- thanks Bubba. Rich

52merc 07-13-2012 09:16 PM

Re: 8BA Distributor centrifugal advance
 

ive got 1 of bubbas also no vac advance im thinking of putting 1 on later but as is it performs great trev nz

ole39 07-13-2012 09:32 PM

Re: 8BA Distributor centrifugal advance
 

when i get mine back from bubba, i'll let you know.

Ol' Ron 07-13-2012 10:10 PM

Re: 8BA Distributor centrifugal advance
 

Without the vacuum advance it no beter than the Mallory or MSD. The Vacuum advance takes into consideration the load on the engine and allows the machanical advance to give power and the vacuum advance to provide economical cruise for better mileage. Remember depending on the engine and the modifications to it will determine the Total advance curve, ssoooo ya gota putz with it. I'd recomend 20 degs at 2000 and 6 degs vacuum for starters.

4t8v8 07-13-2012 10:49 PM

Re: 8BA Distributor centrifugal advance
 

I am running one on mine. Had it for many years and never could get it to run right. Sent it to Bubba's. He worked on it and I am totally happy with it. Power is right on from idle through the rpm range.

49r 07-14-2012 01:07 AM

Re: 8BA Distributor centrifugal advance
 

I was hooked by the 'best thing you can do for a flathead' tag and bought a new dual point Mallory for my 8BA, fitting it 3 months ago. No difference in performance over the stock 'Lodamatic' and identical mpg. Anyone in New Zealand who can set these up properly?

Mike51Merc 07-14-2012 09:01 AM

Re: 8BA Distributor centrifugal advance
 

The new Mallory dual point comes with a terrible set of points and an even worse condensor.

Swap in a set of Echlin 2300 points and a quality condensor before giving up on it, or install a Pertronix inside which is what I eventually did.

Alaska Jim 07-15-2012 02:41 AM

Re: 8BA Distributor centrifugal advance
 

Mike, I am curious as to what you are getting for fuel mileage, since you do not have vac. advance. I also have a 51 Merc.,and have been thinking of changing the dist. I still have the stock loadomatic. It is working fine, but would like a bit more adjustability,and would like to put on the dual carb set up I bought over 10 years ago. car has been running fine, and never got around to putting it on.

Mike51Merc 07-15-2012 07:40 AM

Re: 8BA Distributor centrifugal advance
 

Quote:

Originally Posted by Alaska Jim (Post 461372)
Mike, I am curious as to what you are getting for fuel mileage, since you do not have vac. advance. I also have a 51 Merc.,and have been thinking of changing the dist. I still have the stock loadomatic. It is working fine, but would like a bit more adjustability,and would like to put on the dual carb set up I bought over 10 years ago. car has been running fine, and never got around to putting it on.

I'm running dual Stromberg 48s on a straight linkage. I haven't measured fuel economy in quite a while, but it was like 17-20mpg a few years ago.

Gene1949 06-13-2016 10:02 AM

Re: 8BA Distributor centrifugal advance
 

My setup
1949 Ford w/ 53 Merc
Early Chevrolet distributer with Chrysler pick-up and reluctor
95 Tahoe e-coil and bracket (with mods)
Replace Tahoe module with Corvette hei

The bracket, coil and module tuck very nicely under the distributor using the old coil bracket mounting bolts. This is all easily accomplished with minimal tools and skills/normal hotrodder stuff. Its simple, cheap and bulletproof. My flattie has never started and ran this well. Increasing the plug gap to .045 made a huge difference

40cpe 06-13-2016 11:27 AM

Re: 8BA Distributor centrifugal advance
 

^^^^
Are you using an HEI distributer? I can't picture all that in my mind. We love pictures.

Gene1949 06-13-2016 04:14 PM

Re: 8BA Distributor centrifugal advance
 

I'll post some pix when I get the car home next month. We are at my daughters until she kicks us out. I'm in the process of moving out of the shop there to the new one in NV

The dist is a small cap point unit pre HEI. They polish easily and the Tahoe bracket assembly tucks up out of the way. I ran the Chrysler electronics for 20+ years and it never started or ran like it does with the GM electronic.

I've got 11 degrees dist centrifugal @ 2200 and 7 vac (9"). That will probably change once we leave the Columbia River

BUBBAS IGNITION 06-14-2016 08:56 AM

Re: 8BA Distributor centrifugal advance
 

When its all said and done the GM HEI is the best control for electronics ever made! Problem is the orginal hei module with all the circuits etc is no longer available in any form. They are all sourced off shore and seems to be missing lots of the control functions in the orginal modules.

grumpys hot rods 06-15-2016 12:48 PM

Re: 8BA Distributor centrifugal advance
 

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