to all, manual transmission input shaft tip eaten by roller bearing fix

here is how to fix it when your manual transmission input shaft tip is eaten by roller bearing, go buy a dorman 690-035 clutch pilot bushing. This part is a step down late 50's turboglide adapter that I have used for years as a fix for this problem. Ran out of my stock of them and had to refind the number, It saves having to replace or weld up and turn the input shaft. thought I would share it with all.

When marrying my nv3500 and GM crate motor together, the engine installation kit came with both a bearing and a bushing. Because my old motor had a bushing, I went with the bushing (previous one lasted 165K miles). Any idea why they'd provide both? There were no instructions related to that part of the install. Just curious.

1owner1990 said:

When marrying my nv3500 and GM crate motor together, the engine installation kit came with both a bearing and a bushing. Because my old motor had a bushing, I went with the bushing (previous one lasted 165K miles). Any idea why they'd provide both? There were no instructions related to that part of the install. Just curious.

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I dont know, but I would rather deal with the softer brass bushing than the hardened steel of the roller bearing. first, the roller bearing will eat the tip of your input shaft where the input shaft will wear out the brass bushing without damaging the tip. Second, you can easily drill out the brass without too much damage to the crank, whereas with the hardened steel of the roller bearing, you are going to end up drilling into the softer cast cranks. The third is that you cant hydraulicly press out the roller bearing like you can the brass bushing. (This is done by mixing axle grease and dirt into a paste, pushing it into the pilot bearing hole, then using a heavy hammer (for short swing due to cramped quarters) and an old input shaft or other same size rod to push the bearing out (May require repeated stuffings of paste). Simply put, I will never install a needle roller bearing in a crankshaft again. (one part verses however many individual parts are in a needle bearing, and it only takes one to fail and screw up your ride.).

dwragon said:

The third is that you cant hydraulicly press out the roller bearing like you can the brass bushing. (This is done by mixing axle grease and dirt into a paste, pushing it into the pilot bearing hole, then using a heavy hammer (for short swing due to cramped quarters) and an old input shaft or other same size rod to push the bearing out (May require repeated stuffings of paste). Simply put, I will never install a needle roller bearing in a crankshaft again. (one part verses however many individual parts are in a needle bearing, and it only takes one to fail and screw up your ride.).

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You can also use the very simple, effective, and inexpensive Lisle tool made for this purpose. Grease gun and a few minutes of work. About $12 well-spent..



Richard

someotherguy said:

You can also use the very simple, effective, and inexpensive Lisle tool made for this purpose. Grease gun and a few minutes of work. About $12 well-spent..

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Richard

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Neat, never knew that existed, I will keep it in mind, but knowing my luck I would buy it, put it in a safe place, and whoever cleans out all my crap when I die would not know what it was and throw it in the trash. :whoknows:

dwragon said:

Neat, never knew that existed, I will keep it in mind, but knowing my luck I would buy it, put it in a safe place, and whoever cleans out all my crap when I die would not know what it was and throw it in the trash. :whoknows:

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I stole the grease fitting off it a few months ago to repair the wrecker on a busy night. It'll be years before I ever need it again, if ever, but guaranteed that will be long enough I'll have forgotten the fitting is missing.

Richard