88' E30 IX

[jc43089]

Yep, I didn't have access to a lathe so I took it all the way with the brake cylinder hone, it just takes forever, the problem is the stones plug up from the bearing material very quickly.  Once the stones were broken in the left a very nice finish though and then I wrapped a strip of scotch brite around the hone and used the drill to polish it evenly.  Keep everything oiled and the finish should turn out good.  Worst case is try it again, the bearing is less than 10 bucks.

[TehRaydarlover]

Yeah I planned on getting two of each just in case. I was thinking I could probably do it at MSOE's machine shop and maybe have one of the techs help me with the machining. While I'm there I also need to machine the intermediate shaft itself to clear a 89.6 stroke crankshaft. Do you remember about how much you had to take off for it to fit?

[jc43089]

I just did a stock rebuild on a 2.5 so I didn't have to do any machining to the shaft.

[TehRaydarlover]

Sorry that was out of order meant the bearing. How undersized was the bearing?

[jc43089]

Oh, if I remember right about 10 to 12 thousandths.

[TehRaydarlover]

Alright sounds good, thanks!

[industrialsized]

if you get me the bearing and the exact dimension you want i can throw it on an id grinder at work

[jc43089]

industrialsized said:

if you get me the bearing and the exact dimension you want i can throw it on an id grinder at work

This would be interesting to see how well it works, the bearing material is so soft that it might gum it up.  It clogged the stones of the brake cylinder hone in seconds even with lots of oil.

[TehRaydarlover]

The first machining would be just to get it close. When you press the bearing in its going to change the inner diameter a little. With the bearing pressed in use the brake cylinder hone to get it within tolerance. To do it right you need to machine it with the the bearing pressed into the block. I might try and press it in and use the cnc machine here at school.