ignition coil
 

my ignition coil went out in my "O". does anybody have a part # for a replacement coil with the internal resistor. I seen a thread the R Bedell recommends the bosch 00012, but i cant find one locally. does any of the part stores sell the correct coil. thanks in advance. :American Flag 1:

Available from your local Cub Cadet or Kohler dealers...

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I think I have the Napa # somewhere,..............................

I was wondering about part # IH-385402-R2 ?

If a parts guy can't find a 12v coil with an internal resistor, RUN!!! A 12v coil is a 12v coil, Kind of like air for a tire, any will work.

thanks R Bedell. i also just found that NAPA part # 701634 is also a direct replacement for these kohler engines with the internal resistor. thanks again

There is more to an Ignition Coil than 12 Volts.

There is specifications on the Primary Resistance (Ohms) and the the Secondary Resistance to achieve the desired output voltage to jump across the spark plug gap. That output voltage can be 10,000VDC plus. The wider the gap, the higher the output voltage. Consideration is given to the Amperage Draw on the Primary so it don't burn your points out too fast.

SO....if you have the right ignition coil, you will get the desired results along with the appropriate longevity on the points.

per the NAPA website, it says part # 701634 is an exact replacement for kohler k141-k361. your right not all coils are created equal. thanks again R Bedell.

I have my doubts that you would notice any difference between coils. you might see it if you put it on an oscilloscope as the secondary voltage mat be different,but you would never feel it. As for the points, they are nothing but a switch that turns the coil on and off, again 12 volts is 12 volts (6-8 with an exterior resistor).

This is one of those textbook theory issues that in real life mean nothing, I used to have a long drawn out algebra formula that proved that 1=2 (the bank never bought into it).

Im pretty sure you need to find a coil with 3 Ohm internal resistance. Most of the high output coils have lower than 3 Ohm internal resistance and you would need to use a ballast resistor or the points would pit up prematurely.

There is probably no functional benefit that you would receive from the HO coils. Those are mostly to ignite the fuel under higher compression ratio situations.

Best bet (if you don't feel like researching it to death) is to buy the Kohler part number.

Mike

coil
 

A few years ago on the weekend coil died on my 122.I was hoping to put back in the shed. So off to Autozone the closest open parts source. I asked for a 12v coil with internal resistor and got a confused look. I then asked for a coil for around a '68 VW. That was in stock, opened the box and said for use with internal resistor system. I bought for around 30$ came home put on and have been using since. I don't have lot of run time on this coil but has so far worked with no problems.
Ed

stock Kohler coil has 5 ohms of resistance through the primary. 3 ohm coils will work ok if you have the larger diameter condenser. the newer ones don't seam to have the capacity the old condensers had. the GM coil that looks like a Kohler coil that seam to always find its way onto Kohler's is 0 ohms . now on a GM they use a resistance wire between the coil and the points to prevent points from burning which is what will happen to a Kohler, you may also have trouble getting the engine to rev up with a 0 ohm coil because the points are arcing so bad.
Chrysler products used a resistor on the positive side of the coil to reduce the voltage with a NO internal resistor coil.
secondary voltage I've not seen gains or harm from them. I've run those big ass yellow Accel coils on Kohler singles. looks real cool. but that's about it.
My opinion is to just find a used one for $5 or so, they don't fail that often