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8n Distributor Position Timing

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Bill (BC)

03-17-2006 12:10:01

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Bought this 1950 8N (my first tractor)to restore about two yrs ago.
Rebuilt the carburetor( works fine in a 2nd MH 20 tractor) new plugs points etc
Very Hard starting had to use ether(low compression can't recall the numbers).
I have been told by quite a few old timers & few posts here that these tractors are easy starters even with very poor compression .

Recent posts here on timing say that #1 spark plug should be at the 10:30 or 1 o clock possition.
This got me thinking about the above (on to other projects at the moment).

As found the postion here sure looks wrong at about the 12 position?

Does any one have a comparision photo.
Could this be the root cause of the hard starting.
What is the timing position for a 1950 8N264774.

And yes Dawn this poor puppy is also nameless, which is quite good considering it has been such a
pig to start !!

No I don't think so.

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FarmerDawn

03-17-2006 13:13:02

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Re: 8n Distributor Position Timing in reply to Bill (BC), 03-17-2006 12:10:01

LOL!! Is "no, I don't think so" that you don't want to name it? :-) --Dawn

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jetman8N

03-17-2006 15:46:50

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Re: 8n Distributor Position Timing in reply to FarmerDawn, 03-17-2006 13:13:02

I'd check the timing when it was running with a timing light. If it is close to 4 BTDC and the firing order is correct, you don't have a problem.
You should check the choke plate. I had a problem with a broken spring on the little air valve on the choke plate. With low compression you can't get gas up to the cylinders with the open hole in the choke. Pull the air cleaner hose to the carb and check to make sure the little spring is not broken and there's a hole in the choke. Good luck!
And I would vote for "frigid" as it's hard to get started cold!

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Bill (BC)

03-17-2006 15:05:41

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Re: 8n Distributor Position Timing in reply to FarmerDawn, 03-17-2006 13:13:02

Not Sure. Just thought Pig May not be Suitable.
Anyways the N is not clean enough at the moment so it would be unjust for both species.
Better get back to the painting

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FarmerDawn

03-17-2006 15:23:27

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Re: 8n Distributor Position Timing in reply to Bill (BC), 03-17-2006 15:05:41

LOL!

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Dan

03-17-2006 12:34:37

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Re: 8n Distributor Position Timing in reply to Bill (BC), 03-17-2006 12:10:01

Bill - plug position as you describe makes absolutely no difference. If you really want to know if your distributor is right, bring #1 piston to top dead center on the compression stroke, then see if the rotor is pointing to JUST BEFORE where the #1 spark plug is situated on the distributor cap. If not, pull the entire distributor off the the engine and re-install it where it is. As long as the discription I gave you is correct, it really does not matter if the #1 spark plug is at the 12, 4, 8, etc. position. Make sure the firing order is 1,2,4,3 in a COUNTER clockwise rotation.

Good luck,
Dan

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Dan,Jetman

03-17-2006 23:06:36

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Re: 8n Distributor Timing Update in reply to Dan, 03-17-2006 12:34:37

Dan-Jetman,
Thanks for your replies.
Checked the timing by turning the engine to TDC.
0 DEg on the flywheel.
Rotor is past #1 Spark Plug.
I believe that the Ford manual recommends setting the points to just open at 18 Deg before TDC.
Not enough adjustment on the distributor
Will pull out the Distributor tomorrow.
Hopefully its like the older cars & out of position by 1 tooth or so.
Hard to believe that it was out for such a long time.
Perhaps that is one of reasons why it was sold for parts.
Carb problems the other.
Tempted to spend the weekend hauling this tractor out.
Put it all back together again, just to see how she will run.

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Bill (BC)

03-18-2006 20:44:38

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Bob in reply to Dan,Jetman, 03-17-2006 23:06:36

THanks for your reply.
Yes I omitted to include holding the rotor as far in the rotation direction CCW in the above post.
Your descripition is lot easier to understand than the Ford Manual.
Got tied up today on other things so I have not reset the timing.
Maybe tomorrow

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Bob

03-18-2006 14:40:59

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Re: 8n Distributor Timing Update in reply to Dan,Jetman, 03-17-2006 23:06:36

NO!

The manual is telling you to simulate full centrifugal advance that occurs at speed, by manually rotating the rotor/point cam to the fully-advanced position against the force of the advance springs.

(Obviously, with the engine NOT running, and the distributor cap removed.)

In reality, when you turn the engine over slowly, the points will "break" probably at about 4 degrees BTDC.

Setting them to 18 degrees WITHOUT holding the shaft fully advanced will cause you to set the timing WAY TOO EARLY, causing "kickback".

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