• To ALL forum users - As of late I have been getting quite a few private messages with questions about build ups here on the forum, or tech questions about your personal project. While I appreciate the interest, sending me a private message about these topics distracts from, and undermines the purpose of having a forum here. During the day I wear many hats as a small business owner-operator and I work tirelessly to provide the absolute best service possible to you, our valued customer. When I created this forum I rounded up some of the best minds I knew so that any tech question you might have could be asked and answered by either myself or one of my highly experienced moderators, this way the next time this same question is asked the answer can be easily found and utilized by the next IH enthusiast having the same question. This allows me the freedom to run the day to day operations of the business and minimize the impact to shipments and shop activities that these distractions can cause. It is of the up most importance for me to complete the daily tasks in order to best take care of you our customer, all the while providing you a forum to get the level advice and input you have come to expect and deserve from the premier IH shop in the country.

    So with that I ask that anyone with a question about one of our build ups or a general tech question to please use the forum as it was intended. I am absolutely available by telephone to answer your questions as well but at times may direct you back to our website to better field your question or questions. Most other private messages I will be glad to answer for you.

    Thank you for your understanding.

    Jeff Ismail

Dizzy cap help


New member
I am running into an issue trying to locate the correct cap for the dizzy in my scout, 68' 800 w/ 196 4x4 t90 trans, d20 transfer. Number on the dizzy reads 360724-c91 (which im guessing has been replaced in the past).

Long story short, it has been a plow rig for the last 27 years and I have only had it for 2. It was running for part of the winter after I got it then died out. Ended up building an engine harness for it since that was cooked down by the starter and did a basic tune up. Rebuilt carb (a carter yf unit), new coil, plugs, cap, rotor, and points. She cranks and has fuel but no spark from the dizzy.

Points, IH-4281 (matched the set that came out of it)
Rotor, IH-318 (fits the dizzy)
Cap, IH-443 (fits according to the parts catalog)

It looks like the rotor is not making contact with the center button on the inside of the cap. Does anyone have another P/N for a cap that fits this thing? I just need to get this thing to run to move around the yard for now until I can do the resto on it and drop in a cummins 4bt or rs2.8.


Those are the right p/n's for cap and rotor to fit a Holley curved points distributor which is what you seem to have. Pictures of everything would help in identification. Your new points p/n corresponds with a curved points set which you say matches what came out when the vehicle last ran. That all jives as being correct, at least on paper. Did you replace the condenser too? Did you set the point gap correctly? Have you verified that you have voltage at the coil POS terminal when the IGN is switched ON? If you don't have power there, you'll never get a spark. Have you compared the new rotor to the old one and new Dizz cap to old?


New member
The condenser was replaced as well. I won't be able to get pictures until the weekend. Everything looked to be the same when it was removed, short of measured everything out.
What should the point gap be for this? I set it at 0.015" as a rough guess since I didn't have the service manual with me at the time.
I will recheck the wiring when I get a chance too. There was voltage present when cranking I don't remember if I checked with ign on. That is a helpful start, I will have to go check my wiring again to make sure I got the 12v ign lead since I just sort of threw together a harness to make it run.