Machine crankshaft

[zeke]

So i finally had some time to split the block after finding that i had some crank walk and the thrust bearing is pretty chewed up on one side. I was thinking about just having the crank turned and polished and going with oversized bearings. I called a couple of machine shops where I live and one said they could do it but it would be about 4 weeks before they could get to it, the other shop said that you cannot machine the thrust journal. Now im not sure what shop to believe maybe the second shop just doesn't want to mess with it for whatever reason or it really cannot be done. The crank isn't gouged but its not 100 percent smooth either, if i run my fingernail across it I can feel the slightest little grooves. Has anyone here had their crankshaft turned or should I just try to find another crank?

[mike-tracy]

I know some people have had their cranks ground and gone with oversize bearings. In my experience, you can get a good used crank needing only a polish for less than grinding your current one.

[zeke]

Yeah I found a couple of sites for cheap cranks but not sure if they are new or remans

http://www.nopi.com/dsp_part_detail_16. ... nvid=61379

http://www.cleggengine.com/90-96-subaru ... t-kit.html

These are the two im looking at right now

[mike-tracy]

If I had to guess the first one is new, and second one is used. I've personally never used a new crank, just kept bringing my machine shop used cranks till one that only needed a Polish was found ha ha. Never had an issue.

[PhyrraM]

There is nothing wrong with a properly machined undersize crank, as long as proper bearings are available. Weigh the cost of machining vs. the cost of a good crank. Also, be aware that your choice of bearing brand/type might not be available in all oversizes.

[zeke]

I would like to go with acl race bearings I think I'm sold on the first crank the machine shop that can take care of my crank is booked for at least 4 weeks maybe more.

[jamal]

I've heard that maybe the oversized bearings have a thicker thrust surface, but it is not mentioned in the acl or king catalogs for the actual ej22 bearings.

[mike-tracy]

I've heard that maybe the oversized bearings have a thicker thrust surface, but it is not mentioned in the acl or king catalogs for the actual ej22 bearings.

A mo-betta approach would be to have the case halves ground to accept the phase 2 style crank. The guy wants to get his car up and running without a 1 month wait at the machine shop though.

[PhyrraM]

By far the fastest way would be to obtain a good phase 1 75mm stroke crank (EJ18, EJ20, EJ22).

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[RoughDiamond]

Most shops are not equipped to machine crankshafts, let alone a Subaru cranks. Since the crank is identical across the board for 1.8. 2.0 (phase 1), and 2.2 (phase 1), a good used one is almost guaranteed cheaper.

And about the thrust bearing, I was doing a bit of research, and it turns out you can use a phase 2 set of bearings in a phase 1 IF the thrust face is machined. King bearings uses a different part number for #5 main (the main with the thrust for phase 2 stuff), but if placed in position 3 (like our engines), it's 0.5mm thicker overall. And WAY more available than the phase 1 bearing set.