The Ford Barn

Masot · 01-25-2022, 03:57 PM

Hi

I have a flathead 8BA with Navarro aluminum heads and three stromberg 97 .

I have Mallory 2548201 distributor with pertronix.

What grades do you need? read 28 advance? how many revolutions?

springs Hard? I buy Mr Gasket 928G Advance Curve Kit

Thanks!

51 MERC-CT · 01-25-2022, 04:59 PM

First thing if you check, it appears that the (Mr Gasket 928G Advance Curve Kit) is made for GM distributor, not Mallory.
Also the Mallory 2548201 appears to be made to fit GM ,not flathead.

Masot · 01-25-2022, 05:13 PM

Sorry,

it's for GM, I have adapted to Flathead

51 MERC-CT · 01-25-2022, 05:25 PM

Quote:

Originally Posted by Masot

Sorry,

it's for GM, I have adapted to Flathead

Understand, but the Mr Gasket 928G Advance Curve Kit is for a GM distributor, not Mallory.

vincent · 01-25-2022, 05:29 PM

28 degr advance is too much for the flatty, 22 will be enough. If mechanical advance, you can reduce the amount of degree swing of the flyweights, make sure you have full advance at or before 2000 crank revs - this will give best acceleration. Fully retarded you should have a spark 2 to 4 degr BTDC. If electronic, check what you have and find a programable ignition to dial in for the flathead.

Masot · 01-25-2022, 05:30 PM

Sponsored Links (Register now to hide all advertisements)

you know spring kit to adapt flathead? I don't find... it's obsolete...

Thanks

Masot · 01-25-2022, 06:15 PM

Thanks Vincent for the information.
Yes, my Mallory is a mechanic.

My Pertronix is Pertronix 3

vincent · 01-26-2022, 07:46 AM

After adjustment of distributors possible movement to 10 degr (20 at crank) start adjusting the springs. No need to buy special springs, you can use standard spring coils of a wire size slightly thinner than the Chevy stuff. If wire is thinner and coils more - the spring gets weaker. Thus flyweight will travel further outboard at the same speed. If you cut one coil of the spring the remaining coils have to do more work and thus the spring becomes stronger. I check my dizzy on a lathe and see when the flyweights open, this should occur at around 800 revs (1600 at crank) and be fully open at 1000 revs (2000 crank)
I don´t know the pertronics stuff so no help there.

Masot · 01-26-2022, 10:44 AM

woowww, this information is very good, I never thought of adjusting it on the lathe!

thank you very much from Spain

Ol' Ron · 01-26-2022, 12:31 PM

Ignition advance for a flathead is very simple, but hard to get. Under power17/20 max and 26/28 cruise. This must work with the carburation 12.5/13 for power, 14.7 15.5 The only system that works with these numbers is a Charley ny Dist. and n Edelbrock 500 cfm 4bl. This was all on the barn back about 10 yeas ago by Richard kunc Now every engine is different so you have to find the sweet spot for yours. His engine was a 276 , L-100 cam
3800 lb 53 Ford HT T-5 4.10 I drove the car, very impresive.
G

Masot · 01-26-2022, 01:08 PM

Is my engine

only need distributor configuration

flathead4rd · 01-26-2022, 01:27 PM

Whats with all the add's on your post with pictures?

Masot · 01-26-2022, 01:53 PM

Quote:

Originally Posted by flathead4rd

Whats with all the add's on your post with pictures?

They are only photos of my engine

Ronnieroadster · 01-26-2022, 03:38 PM

I use the same converted Mallory as yours in many of my builds and this includes with the Pertronix conversion. Set your initial timing between 10 to 12 degrees at idle RPM and then look for a total with the centrifugal advance a max of 22 to 25 degrees. Even though you have a converted distributer as long as your able to limit the amount the advance weights go out you will get the timing adjusted to these numbers.
Very nice looking Flathead
Ronnieroadster

Ol' Ron · 01-26-2022, 10:32 PM

Every engine builder has his own reason for tuning an engine, especially these that come from street and short track racing. I keep my mechanical advance very short. I do this because it helps acceleration and comes in around 17/20 degrees and you tune the AF for best acceleration.. Now running the same engine in the street we go to a long advance 226/29 and set the AF for economy. Richard thought of this. He was getting 22mpg with his 53 HT. I drove it and the street performance was ver good. Experimenting is what improves the beast.
Gramps

Masot · 01-27-2022, 07:25 AM

Thanks for your comments

My engine is:

Heads Navarro high compression
Ross Aluminum pistons
camshaft super 88 3/4
Original Tripower Strombergs rebuilt by Uncle Max
distributor Mallory with Pertronix

Also adjust this configuration that you comment?

Thanks

Ol' Ron · 01-27-2022, 08:29 AM

sounds like a very nice build with all good parts, need to know displacement, you have to get an AF meter and check timing advance at cruise and acceleration. good luck .
Gramps

Masot · 01-27-2022, 08:58 AM

I have an AF meter waiting for information to verify advance

Thanks Ron

Masot · 01-27-2022, 09:01 AM

Quote:

Originally Posted by Ol' Ron

sounds like a very nice build with all good parts, need to know displacement, you have to get an AF meter and check timing advance at cruise and acceleration. good luck .
Gramps

I have an AF meter waiting for information to verify advance

Thanks Ron

Ol' Ron · 01-27-2022, 05:27 PM

The AF meter will only check the air/fuel ratio, The timing light checks advance. You need to measure your Af to and vheck your advance, if the AF is too righ you have to change the jets in the carb.. You have to understand what these instruments do for you, and adjust accordingly. Simple way to do this is oneat a time. Drive the car at your cruising speed, get the AF to 14.5 set advance at 24 check milage. move advance to 26 check milage. change carb to 15, check milage . Now check AF at WOT and AF. After you've done this a few times you can skip some of the test and combine them
The beauty of this system is the first test tells all
Gramps.
spending 5 or 6K on an engine build. Spending alittle time tunerng it might be worth the effort.

01-25-2022, 03:57 PM	#1
Masot Junior Member Join Date: May 2016 Location: Spain Posts: 17	distrubutor Mallory Hi I have a flathead 8BA with Navarro aluminum heads and three stromberg 97 . I have Mallory 2548201 distributor with pertronix. What grades do you need? read 28 advance? how many revolutions? springs Hard? I buy Mr Gasket 928G Advance Curve Kit Thanks! Last edited by Masot; 01-25-2022 at 04:02 PM.

01-25-2022, 04:59 PM	#2
51 MERC-CT Senior Member Join Date: May 2010 Location: East Hartford, Ct Posts: 5,898	Re: distrubutor Mallory First thing if you check, it appears that the (Mr Gasket 928G Advance Curve Kit) is made for GM distributor, not Mallory. Also the Mallory 2548201 appears to be made to fit GM ,not flathead. __________________ DON'T RECALL DOING SOMETHING FOR MYSELF BASED ON SOMEONE ELSE'S LIKES OR DISLIKES

01-25-2022, 05:13 PM	#3
Masot Junior Member Join Date: May 2016 Location: Spain Posts: 17	Re: distrubutor Mallory Sorry, it's for GM, I have adapted to Flathead

01-25-2022, 05:29 PM	#5
vincent Senior Member Join Date: Jun 2020 Location: Germany Posts: 204	Re: distrubutor Mallory 28 degr advance is too much for the flatty, 22 will be enough. If mechanical advance, you can reduce the amount of degree swing of the flyweights, make sure you have full advance at or before 2000 crank revs - this will give best acceleration. Fully retarded you should have a spark 2 to 4 degr BTDC. If electronic, check what you have and find a programable ignition to dial in for the flathead.

01-25-2022, 05:30 PM	#6
Masot Junior Member Join Date: May 2016 Location: Spain Posts: 17	Re: distrubutor Mallory Sponsored Links (Register now to hide all advertisements) you know spring kit to adapt flathead? I don't find... it's obsolete... Thanks

01-25-2022, 06:15 PM	#7
Masot Junior Member Join Date: May 2016 Location: Spain Posts: 17	Re: distrubutor Mallory Thanks Vincent for the information. Yes, my Mallory is a mechanic. My Pertronix is Pertronix 3 Last edited by Masot; 01-25-2022 at 09:14 PM.

01-26-2022, 07:46 AM	#8
vincent Senior Member Join Date: Jun 2020 Location: Germany Posts: 204	Re: distrubutor Mallory After adjustment of distributors possible movement to 10 degr (20 at crank) start adjusting the springs. No need to buy special springs, you can use standard spring coils of a wire size slightly thinner than the Chevy stuff. If wire is thinner and coils more - the spring gets weaker. Thus flyweight will travel further outboard at the same speed. If you cut one coil of the spring the remaining coils have to do more work and thus the spring becomes stronger. I check my dizzy on a lathe and see when the flyweights open, this should occur at around 800 revs (1600 at crank) and be fully open at 1000 revs (2000 crank) I don´t know the pertronics stuff so no help there.

01-26-2022, 10:44 AM	#9
Masot Junior Member Join Date: May 2016 Location: Spain Posts: 17	Re: distrubutor Mallory woowww, this information is very good, I never thought of adjusting it on the lathe! thank you very much from Spain

01-26-2022, 12:31 PM	#10
Ol' Ron Senior Member Join Date: May 2010 Location: Chester Vt Posts: 8,859	Re: distrubutor Mallory Ignition advance for a flathead is very simple, but hard to get. Under power17/20 max and 26/28 cruise. This must work with the carburation 12.5/13 for power, 14.7 15.5 The only system that works with these numbers is a Charley ny Dist. and n Edelbrock 500 cfm 4bl. This was all on the barn back about 10 yeas ago by Richard kunc Now every engine is different so you have to find the sweet spot for yours. His engine was a 276 , L-100 cam 3800 lb 53 Ford HT T-5 4.10 I drove the car, very impresive. G

01-26-2022, 01:08 PM	#11
Masot Junior Member Join Date: May 2016 Location: Spain Posts: 17	Re: distrubutor Mallory Is my engine only need distributor configuration Last edited by Masot; 01-26-2022 at 01:25 PM.

01-26-2022, 01:27 PM	#12
flathead4rd Senior Member Join Date: May 2010 Location: Michigan Posts: 505	Re: distrubutor Mallory Whats with all the add's on your post with pictures?

01-26-2022, 03:38 PM	#14
Ronnieroadster Senior Member Join Date: Dec 2010 Location: East Coast in CT Posts: 1,528	Re: distrubutor Mallory I use the same converted Mallory as yours in many of my builds and this includes with the Pertronix conversion. Set your initial timing between 10 to 12 degrees at idle RPM and then look for a total with the centrifugal advance a max of 22 to 25 degrees. Even though you have a converted distributer as long as your able to limit the amount the advance weights go out you will get the timing adjusted to these numbers. Very nice looking Flathead 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

01-26-2022, 10:32 PM	#15
Ol' Ron Senior Member Join Date: May 2010 Location: Chester Vt Posts: 8,859	Re: distrubutor Mallory Every engine builder has his own reason for tuning an engine, especially these that come from street and short track racing. I keep my mechanical advance very short. I do this because it helps acceleration and comes in around 17/20 degrees and you tune the AF for best acceleration.. Now running the same engine in the street we go to a long advance 226/29 and set the AF for economy. Richard thought of this. He was getting 22mpg with his 53 HT. I drove it and the street performance was ver good. Experimenting is what improves the beast. Gramps

01-27-2022, 07:25 AM	#16
Masot Junior Member Join Date: May 2016 Location: Spain Posts: 17	Re: distrubutor Mallory Thanks for your comments My engine is: Heads Navarro high compression Ross Aluminum pistons camshaft super 88 3/4 Original Tripower Strombergs rebuilt by Uncle Max distributor Mallory with Pertronix Also adjust this configuration that you comment? Thanks

01-27-2022, 08:29 AM	#17
Ol' Ron Senior Member Join Date: May 2010 Location: Chester Vt Posts: 8,859	Re: distrubutor Mallory sounds like a very nice build with all good parts, need to know displacement, you have to get an AF meter and check timing advance at cruise and acceleration. good luck . Gramps

01-27-2022, 08:58 AM	#18
Masot Junior Member Join Date: May 2016 Location: Spain Posts: 17	Re: distrubutor Mallory I have an AF meter waiting for information to verify advance Thanks Ron

01-27-2022, 05:27 PM	#20
Ol' Ron Senior Member Join Date: May 2010 Location: Chester Vt Posts: 8,859	Re: distrubutor Mallory The AF meter will only check the air/fuel ratio, The timing light checks advance. You need to measure your Af to and vheck your advance, if the AF is too righ you have to change the jets in the carb.. You have to understand what these instruments do for you, and adjust accordingly. Simple way to do this is oneat a time. Drive the car at your cruising speed, get the AF to 14.5 set advance at 24 check milage. move advance to 26 check milage. change carb to 15, check milage . Now check AF at WOT and AF. After you've done this a few times you can skip some of the test and combine them The beauty of this system is the first test tells all Gramps. spending 5 or 6K on an engine build. Spending alittle time tunerng it might be worth the effort.