pilot bushing vs pilot bearing

[pepecat]

it is not a horspower issue at all from what I understand. It is a wear issue and once that bronze bushing gives up the ghost, you will do damage to the input shaft and here a rattle or chatter while engaging clutch, and at full disengage (in gear) from the input shaft/cluch disk. do yourself a favor and machine the flywheel out and put a bearing in there for cheap insurance unless you plan on having your transmission out regularly and can replace the bushing every time.

 

[dpuckett]

It is time in the near future for a new transmission and clutch. I plan to get the rebuild kit from Standard Transmission and I have a spare, like new clutch that will go in. My question is, why did the early ones have a pilot bushing and the newer ones go with a pilot bearing? Which one would be better? I have access to good, cost effective machine shop labor, so machining out the flywheel is no problem- I'm getting it turned while I'm at it.



Daniel

 

[zstroken]

I would look at the bearings that south bend is using in their new flywheels and see if your flywheel could be machined to accept that one.

 

[JLEONARD]

 Which one would be better

Will a bearing will be better than a bushing... . yes. The real question is does it really matter in our application?

I'd venture to guess probably not... but if you can get the flywheel machined out for one go for it.

Jay

 

[Sri Ram]

The real question is does it really matter in our application?

I put in a bearing from Quad 4x4 when I did my clutch a couple of months ago. But, I'm unclear as to the advantage. Jay, can you elaborate?

 

[JLEONARD]

There is less friction with a bearing than with a bushing. Less friction is a good thing. Will we notice a horsepower change or a mileage increase? I doubt it.

The shaft to bore clearance will be less with a bearing. That means potentially less shaft runout..... that might mean less internal transmission wear????



This second one is a good question for our resident "Getrag Go to Guy" James. So, Mr McPherson... ... ..... I know you're thinking about this... please put in your nickle's worth.



Thanks.

 

[RonA]

My transmission was starting to get very hard to put into gear after idling at a light. I replaced my clutch and machined out the bushing hole to accept a ball bearing. It has helped the problem. I don't have to scramble to get it into gear any more. This is a pretty common thing for the 6 speeds. The slight bit of extra drag makes it hard to get into gear.



Ron