katy
Well-known member
How does one do that w/out breaking the rotor? I've never been able to figure that out.
Model B Distributor in a Model A
- Thread starter JimZ
- Start date
How does one do that w/out breaking the rotor? I've never been able to figure that out.
jwmckenzie
Senior Member
JimZ, can we get a wider view of your timing pin location, like in the picture Charlie Posted?
I have seen those elongated bosses on commercial engines and have been told they were aftermarket, wondering if your timing gear cover is a "B" but without the elongated boss. Just a thought.
Is the auto advance working in the distributor?
I have seen those elongated bosses on commercial engines and have been told they were aftermarket, wondering if your timing gear cover is a "B" but without the elongated boss. Just a thought.
Is the auto advance working in the distributor?
According to Vince's site it looks like the Model A service replacement and all the
Model B timing covers had the elongated timing pin boss. The 1933-34 had just
a round boss. http://www.fordgarage.com/pages/timingcovers.htm
Model B timing covers had the elongated timing pin boss. The 1933-34 had just
a round boss. http://www.fordgarage.com/pages/timingcovers.htm
JimZ
Junior Member
I’ll get a better photo in a little while. Even though the advance seems to be working fine, getting it timed per a proper procedure is unachievable. The best I can do is set it so it doesn’t backfire. I have no idea if I’m getting optimum performance. I’m thinking about putting a Model A distributor in it. Then I can enjoy the true Model A driving experience. I wonder if I’ll need to change the body or are the A and B bodies the same?
jwmckenzie
Senior Member
The bodies are different. Your pic looks like an "A" cover.
Have you tried a timing light? I have one that has a dial on the back that you can move to see where you are at. If you are running a 6v System simply power the 12V timing light with another battery.
Of course you would have to get to TDC and put an indicator and mark on the crank pulley. NuRex makes a timing indicator.
https://www.nurex.com/extra-crankshaft-degree-indicator
Here is what I did. White dot on crank pulley is TDC, the yellow mark is 19 BTDC.
shew01
Well-known member
The bodies are different. Your pic looks like an "A" cover.
Have you tried a timing light? I have one that has a dial on the back that you can move to see where you are at. If you are running a 6v System simply power the 12V timing light with another battery.
Of course you would have to get to TDC and put an indicator and mark on the crank pulley. NuRex makes a timing indicator.
https://www.nurex.com/extra-crankshaft-degree-indicator
Here is what I did. White dot on crank pulley is TDC, the yellow mark is 19 BTDC.
I’m curious. How did you know where to put the yellow dot for 19 degrees?
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shew01
Well-known member
I guess they “don’t make them like they used to.” [emoji23]
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jwmckenzie
Senior Member
A little Geometry and an internet calculator, I able to calculate the distance of between the dots (Chord Length), given a 19 degree angle and the radius of the crank pulley.
JimZ
Junior Member
New $50 timing light shows that I had the timing set at exactly 19 deg. BTDC with my Model B distributor. I knew it was running ok but didn’t realize I could get 19 deg. by ear. Too bad I had to tear up the packaging to get the timing light out or I’d think about taking it back.
jwmckenzie
Senior Member
Excellent. Now you know... We all need a new tool from time to time....
California Travieso
Well-known member
Jack Shaft
BANNED
Static timing a B distributor isn't the best way to go...shoot for 1 degree advance per 100 rpm.. according to the math .255" on the circumference of the pulley is 5 degrees..so,at idle,or if you use a cheapie tach dwell,at 500 rpm is should advance a skossh over 1/4 inch...at 1000 rpm it should be hair over a half...3/4 at 1500,1 " at 2000 rpm..