Stripped dizzy and cam gear, with attitude
 

What would cause this
https://cimg1.ibsrv.net/gimg/www.che...309b4b3fe1.jpg
and the cam is chewed up also not so bad though thanks
https://cimg0.ibsrv.net/gimg/www.che...462ef4d46a.jpg

Huh. If it were a chevy small block I would say the distributor gear is mismatched to the cam. Chevy used at least 3 different materials for their distributor gears over the years, Bronze, Steel and a composite gear and if you didn't use the appropriate gear for the camshaft you were installing, one or other would eat itself up. My other thought would be that the camshaft has excessive end play causing the cam gear to move away from and closer to the distributor gear. Lastly, you don't say but did the engine quit running and was the distributor hold-down clamp loose or missing when you went to pull the distributor. I guess all this is to say we need more information about what happened to cause you to look at the distributor..

Happy Jeepin'
TexasTaz

OK this is What happen it’s a 4.0 stroker motor from a 1993 Jeep Cherokee and put in my Comanche is on the beach Marvin two wheel drive In the deep s sand up and down the beach I went Then I hit a small bump and that’s when everything shut down kind of like a bad coil so I tried everything to do with ignition everything seem to be fine so I decided to pull the distributor that’s what I found so I put a new distributor in ran fine then I shut it off then I will run to restart it and it would not start so I pull the distributor out in the gearing looked normal but not as bad so that’s what happen with the closet and do you need what I need to do to fix it other than just replace the cam I don’t know flush the motors of shavings and would not

https://cimg5.ibsrv.net/gimg/www.che...bb1b94d5c5.jpg

Here we go again with amazing grammar and lack of punctuation. Not trying to be an a$$hole here, but there shouldn't be a difference between talking to someone in person and typing, or writing, something to read.
Like a lot of us have said before, quality help and answers from other members requires understandable posts with distinguishable sentences and complete thoughts....

Talk to text never works the way you think it should. If we want to use that function on our phones, proof reading before submitting goes a long way.

Comanche
 

Okey this is What happen.

it’s a 4.0 stroker motor from a 1993 Jeep Cherokee. I put in my Comanche. I was on the beach Getting on it (Spinning tires)I was in two wheel drive In the deep s sand up and down the beach I went. (Ran the piss out of it for about 2hours) Then I hit a small bump and that’s when everything shut down. kind of like a bad coil. I tried everything to do with ignition to fix it. Every thing seamed to be fine. So I pull the distributor that’s what I found (photo) so I put a new distributor in. It ran fine until I shut it off. Tried to restart and it would not start so I pull the distributor out in the gearing looked worn but not as bad. so that’s what happen. What. Would cause that I am in process of replacing cam. Thanks

https://cimg6.ibsrv.net/gimg/www.che...36466b8e8.jpeg
https://cimg0.ibsrv.net/gimg/www.che...4c68d6663.jpeg
https://cimg2.ibsrv.net/gimg/www.che...36d750386.jpeg

So what’s my grade now
 

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Still not good enough for you? were you just being a troll with nothing good to say?good for you Just being the grammar police I see . How cool is that. Thanks for looking out

Unfortunately it is true...the really experienced guys that can help you simply will not be bothered to read something unless it is easy for them

Having said that, there was a recent thread about chewed dizzy gears, but I cant remember what the ultimate resolution was in that case

Searching the archives for "damaged distributor gear" will probably yield some reults

If you hang in here, someone will be able to give more detailed advice & opinions

I wouldnt be happy if my cam & dizzy was chewed up either

how many miles on the engine ?

I got it used from a Jeep that crashed in to a barn and sat on it side for months

i was not looking for help I probably have more experience than most people on here. I was just wondering why it happened. I know How to fix it That’s no big whoop. Thanks again

Now that I'm reading this....... Sorry I don't spend ALL my time here policing grammar. And a lot of people DO agree with me and my earlier comments.

But................. It sounds to me like there may be some play between the cam and distributor gears. Distributor (or cam) may not be in securely and when your hitting bumps at high RPM's it is moving around and not getting a good bite with the gear teeth.
Does the distributor seem loose at all when it's installed? If not, then since your replacing the cam, obviously look at the bearings and all of its anchor points too.

Do you have mechanical experience, or theory of operation experience? Anyone take nuts and bolts off a vehicle and replace them. But knowing how the stuff works is a different story.

You can't blame a salty retired vet for not expecting less than damn near perfect results from something as simple as typing.



"He has a right to criticize, who has a heart to help"
- Abraham Lincoln

my misunderstanding..as an experienced service technician, my approach was to identify the failed parts..and the cause, then replace them

There is people on this forum who have vast experience with these exact engines,and this forum history, so they would have some insight

Chewing dizzy gears and camlobes is a known problem with these engines..usually on high mileage units....or shortly after they had been worked upon

I didn't want to make things worse by laughing. There's always the guy that "knows more" and has to advertise it. Even if it is true, someone with 4 posts doesn't get the respect that may be deserved until it's proven.

I totally agree. There are some great folks on this forum who dedicate their time to help folks they don't even know. Quite a few in this thread.

And, they offer GREAT advice along with exhibiting infinite patience with newbies.

So, if you can't deal with punctuation and grammar out of respect for their time and contributions to YOUR Jeep issue, go somewhere else.
Simple. You need them way more than they need you.............

Think of how many other people they coulda helped in the time they spent dealing with your pissy attitude.

I'm thinking you should check the oil pump drive shaft to see if one of the drive ears is broken off, allowing the distributor shaft to flex every 1/2 turn and not allowing the gear to stay fully engaged with the cam gear. Pulling the cam is not an easy thing to do with the engine in the frame. It's as long as the engine and there isn't enough clearance to pull it out without pulling almost the entire front grillwork and jacking the engine up enough to clear the frame.

That is, of course, if you're still there Jed.

Maybe he is waiting on a response from the MJ section.... XJ guys are poopy heads..

Now that he has been officially hazed and initiated into the forum, we are trying to help.... but still no love.