so is this wore out or what

[furydan]

Here is a picture of my input shaft from my 833 4 speed.. Is the step supposed to be there? Is this thing no good anymore? I am in the process of swapping motors and had no trouble with the trans. Just checking that this is ok.
Dan

 

[furydan]

ANYBODY GOT A COMMENT???? I guess I'll just put it back in the car and not worry about it.

 

[67Dart273]

OK so you posted this question at 4AM on the west coast and are chompin' at the bit for an answer at only 9:30AM, a time when many of the younger guys are at work?

Chill out buddy. But don't run that as is. That shaft is seriously worn out.

 

[dano]

What is the OD? Was there a pilot bearing in the end of the crank? I wouldn't run it without verifying it is correct. Looking at Brewers input shaft I'd have to say something is wrong here. Output shaft bearing bad?

http://www.brewersperformance.com/products.asp?cat=261

 

[RedFish]

If the nose of it is worn enough to let the shaft wobble about the front seal and bearing in the trans would fail. I dont think you have a problem there.

 

[67Dart273]

Any Mopar shaft I've ever seen did NOT have steps in grooves on the pilot area of the shaft.

 

[Purple Haze]

Looks like it was turned down for a smaller id pilot brg, check the ID of the pilot brg against the OD of the shaft should be real close. But that grove doesn't look good to me.

 

[RedFish]

I dont know what could have worn a groove in it either. If it fits run it.

 

[pishta]

Someone could have in fact turned it down to fit a pilot bearing. Does the finish/OD look flat across the entire nose of that to the groove? I dont think it would wear past the width of the pilot bearing, ie on the tip of the nose.

 

[chignikred]

Please use correct terminology in this discussion.
The STEP looks clearly machined, and I agree with idea that is was machined to fit an incorrect pilot bushing. Check dims, and reuse if clearances are correct with existing bushing / crank. Or replicate in a new crank with a new incorrect id bushing.

The GROOVE is a mopars 'code' for the 3.09 gear ratio, is no 'problem'.

red

 

[furydan]

Well it turns out that the thicker portion of the shaft fit the input BEARING I used in the torque converter register. I had to have the BEARING turned down to fit the smaller register hole of my 1965 273 crankshaft. The crank was not drilled for the 4 speed BUSHING, but was deep enough so that I didn't have to cut the trans input shaft.
Motor is all together now and I put it in the car last night. Now just need to hook it all up.
I agree that the input shaft looks like it was machined for a different bushing, but that seems like a lot more work than just getting the correct bushing to start with. I was told this trans was rebuilt about 3 years ago. Maybe that is when the machining took place.
Sorry about the crappy cell phone pic............