Ford 800 distributor

Finneas · Mar 21, 2013

I've searched every link I can find for the answer to this. I'm
sure as soon as it finally sinks in ill have a "well, duh" moment.
My tractor was converted to 12v before me and has run great
until now. Starting problems lead me to replace the coil, plugs
points ,etc. there is a terminal block under the dash that is 12v
on one side 6v on the other. 6v wire goes to the coil. Now the
part I can't get straight; is this a 6v coil? Is the block the
resistor or just voltage reducer? Do I use a 12v coil with
resistor? 6v without a resistor?

JMOR · Mar 21, 2013

" Is the block the
resistor or just voltage reducer?" Disconnect the wire going to coil & re-measure voltage, if it is now 12v on both in & out terminals, then it is a resistor.

Finneas · Mar 21, 2013

If it is a reducer or resistor, does that mean I can use a 12v
coil with a resistor ( or none if this is a resistor) or if it is a
reducer, can I eliminate it and run a 12v coil with a resistor?

JMOR · Mar 21, 2013

(quoted from post at 12:11:54 03/21/13) If it is a reducer or resistor, does that mean I can use a 12v
coil with a resistor ( or none if this is a resistor) or if it is a
reducer, can I eliminate it and run a 12v coil with a resistor?

ou can take it out & throw it away, if you use a "true" 12v coil, such as IC14b from NAPA or any other coil with a primary resistance in the 3 to 4 Ohm range.
If use a "12v coil requiring resistor", then you need resistor. The coils requiring resistor will have primary resistance in range of 0.5 to perhaps 2 Ohms, i.e., well under the 3 to 4 range.

Finneas · Mar 21, 2013

Thanks for the info! It's slowly sinking in. What was really
confusing me was why was it converted to 12v but half was
still 6v? I read that the points/ distributor don't know the
difference and 12v gives a better spark.

JMOR · Mar 21, 2013

(quoted from post at 12:38:13 03/21/13) Thanks for the info! It's slowly sinking in. What was really
confusing me was why was it converted to 12v but half was
still 6v? I read that the points/ distributor don't know the
difference and 12v gives a better spark.

sing the original (before 12v conversion) coil plus a resistor was cheaper than a new "true 12v" coil is likely the reason ....and it does work just fine.

souNdguy · Mar 21, 2013

my advice?

while it will work fine with 6v coil and resistor..

i'd eliminate the resistor and get a real 12v oil like a napa ic14sb. it won't run ANY better.. but will reduce the number of wiere conenctions that can corode and get loose over time.... less wireing the better..

Bill Radford · Mar 21, 2013

SG is right on...when I did my 641 I went with a 12 volt coil.Anything that can simplify wiring is a good thing..

Bill Radford · Mar 21, 2013

...but I used a 6 volt solenoid (because I could find one that was not grounded by its bracket)None of the car stuff would work.

Finneas · Mar 21, 2013

Beautiful! The really odd thing is that I bought this from a
NAPA store owner. He rebuilt it and used it on his place. I
don't plan on restoring, just using it mostly for weed control.
Since I'm this far along in the tune up I think I'll switch coils
and the block, whatever it is, so the next guy ( or me when I
forget) will have an easier time of it.

36 Coupe · Mar 22, 2013

Solenoid on my Ford F150 truck has a coil the grounds thru its bracket.It does have an internal diode across the coil so it can only be used on negative ground systems.

Ford 800 distributor

Finneas

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JMOR

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Finneas

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JMOR

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Finneas

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JMOR

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souNdguy

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Bill Radford

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Bill Radford

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Finneas

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36 Coupe

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