Kraton Can you help me diagnose my Kraton?

[EbbTide]

Hey guys, my 3rd outing with the Kraton and something broke. Didn’t jump, crash or bash it. Was doing speed runs and it started making this awful noise and going in and out of drive. I thought it was a pinion slipping or spur blew out but both look good. Thanks for helping a newb! I’m slowly learning fellas.

 

[TraverseCity420]

I'd say you may need to pull one or all of your diffs off and check for broken teeth? Sure don't sound good tho.

 

[Rrr184]

Probably middle diff

 

[TraverseCity420]

Probably middle diff

That was my first inclination as well, But I figure go for the easy ones first lol

 

[EbbTide]

Ok I’ll look for a YouTube how to on how to do that. Thank you

 

[bicketybam]

I'm guessing rear diff. You could see the rear center dogbone turning and the rear wheels not. Start with that rear diff.

 

[Lazy Bushman]

Sounds like Centre Diff to me. Mine makes a similar noise when I manually push it back or forth across my work bench but it isn't noticeable under power like yours

 

[bicketybam]

Go to 25 seconds and watch the rear dogbone spin.

 

[Lazy Bushman]

Go to 25 seconds and watch the rear dogbone spin.

I will. Trust your judgement better than mine.....I'm still working this stuff out...cheers

 

[EbbTide]

Thanks fellas. I’ll just start with the rear work my way forward. Watching how to vids now.

 

[TraverseCity420]

Keep us posted, we all learn this way

 

[Lazy Bushman]

Keep us posted, we all learn this way

Agreed, i’d Be keen to know too

 

[Notorious J]

Check the hubs. I remember another poster mention a similar problem. Ended up being the little cross pin broke inside the hub. Power getting there, but axle was just spinning inside the hub.

 

[blackgoat04]

looked like the front tires were throwing a little dirt, but not the rears. I'm guessing rear diff

 

[Crash]

I know you checked it but it sounds like a pinion gear.

 

[Jimbobjr]

You may be able to pin point the problem on the bench. Put the car up on a box or something to get the wheels off the ground. Hold one rear wheel and spin the other by hand. This should transfer to the front wheels. Do each rear and then the fronts. They all should feel about the same if everything is good.

 

[EbbTide]

Thank you for your guidance on where to start guys. I started at the rear and this is what I found so far. I blew out the rear left bearing. I’m still messing with it, just wanted to update what I found so far. My triage area.

 

[Notorious J]

Bulk head a pinion look ok. How are the teeth on the ring gear? Not sure how long you ran it like that, but might be a little too much wear to just slap a new bearing on.

 

[EbbTide]

Bulk head a pinion look ok. How are the teeth on the ring gear? Not sure how long you ran it like that, but might be a little too much wear to just slap a new bearing on.

Ran it less then 50 sec just for the video. When I was doing the speed run I heard it and shut her Down. That’s as far as I got into the tear down. I have a new rear rebuild kit and some fast eddies that I just ordered.

 

[TraverseCity420]

good job getting in there and figuring it out!

Keep going!