how many teeth are on an ip gear?

[JourneymanD]

hey guys....

same # as the # of licks to get to the center of a tootsie roll pop i think?

I am just about ready to put a 7.3 idi in my boxtruck to replace the one i lost to blockworm. the replacement engine i got came out of an 89 f350. It has a gear tooth sensor on the ip gear housing. I intend to use the sensor to get pulses for a tach(dakota digital sells an interface to condition the pulses to use this sensor with any aftermarket tach), but i was wondering if someone can tell me how many teeth are on the ip gear. I found a partial pic of one on a link referencing the re-alignment of the timing marks without being able to see the dots. I have extrapolated that there are 102 teeth on the gear, but can someone that has one out of the engine verify that for me please? I dont care to take the ip housing off the dead engine unless I absolutely have to... thanks in advance.

I'll put together a tech article for all interested once i get it all sorted out and working. thanks again.

 

[Agnem]

Somebody is going to have one, and count them for you, but I think you should send them a gift card to Appleby's or something. What a pain that will be. I bet they have to count them twice to make sure they got it right.

 

[icanfixall]

I counted the teeth on my new gear sitting on the bench... I got 106 twice and 107 once so my thoughts are the gear has 106 teeth on it. Yes, its a tuff job counting teeth and staying on the count... this old mind wonders way to much.....

 

[JourneymanD]

Thanks guys. I also counted the teeth on the flywheel, cause vdo makes a gear tooth detector that will also work with my mess on a flywheel ring gear if you can mount it. I just marked every tenth tooth with a soapstone and all i had to do was count to ten a bunch of times. in the end i just counted how many groups of ten i had and added the short group. figured I could save the dough on the VDO sensor and the hassle to fab a bracket if i just used the sensor Ford put in the donor engine to start with. thanks again.

 

[typ4]

It has to be an even number or we would have variable valve and injector timing with lots of piston and valve intercou&&& , ummm interference, yeah thats it .