tempest411

Hello,

I need to replace the crankshaft girdle alignment sleeve in my block as it was damaged by the shop that did my machine work (or their associates that did the Nikasil plating). It's Porsche pt# 928 101 195 03. If this were an iron block I'd just crush it inward until the fit was loose enough that it fell out. In an aluminum block I'd think there's a real risk of cracking the block. If you've done this, how did you go about it? JB Weld an eye bolt in it and use a slide hammer? Dremel it? I'd appreciate your suggestions.

Thank you,

Rick

chrsvo

Give it lots of heat, the alu will expand more and ease extraction. Then use a bearing puller.

You could also cut it with an open end saw blade but it’s nearly impossible not to cut into the „hub“ surface.

tempest411

I got queasy blasting it with a propane torch, and ended up cutting it out with a Dremel. I did put a very small mark down the length of the bushing, but it shouldn't cause any issues as there's no seal formed by it. I'll probably end up making my own replacement as I'm unable to find anything close enough to work,

951and944S

Performance Developments should have them.
They offer a service of multi doweling the crank/girdle.
Check their webstite for the server and substitute 'Taylor@' , he should be able to help you out.

IIRC Lindsey might have a similar machine shop option, try them too.

T

951and944S

BTW, who did your Nikasil, Millennium Technologies...?

T

tempest411

I sent the block to 928 Motorsport/U.S. Chrome. The bores look good (though I haven't measured them yet).

Carl Fausett

We machine an aluminum bar to be the exact ID of the alignment bushing, then tap it in. Then heat the area around the sleeve with a torch, and you can clamp on the outer sleeve pretty hard now without damage.
I'm sorry if the block arrived with that buggered up. Now you can clamp on it direct and heat the area - you should be able to worry it back n' forth till it slides out. .

951and944S

Seems that the dowel should have been removed before the block was even sent.

It's ferrous.

T

tempest411

I was told small stuff like that didn't need to come out. It wasn't effected by the plating process at all. It was dented somehow. I tried to massage it back to shape, but quickly discovered that wasn't going to work. I have it out now. I just need to come up with a replacement. I actually got a 15mm stainless tube from McMaster Carr, but the OD is about. 0005" less than what you'd want for the right fit. So close, but so far away!

GPA951s

After everything is set into place Toss the oil pump housing in the front to make sure the front of the girdle is flat and true with the block, then lock the girdle down It makes a nice Guide when assembling..

tempest411

Thank you for the suggestion on a source for dowel pin. Lindsay has plans to make them some day, but it's not high up on the list at the moments. Performance Development has been getting them from the dealer, but it's been a while, and they are NLA now.

951and944S

Lemme see if I can get one out easily.

If so, I'll send you one.

I have a half dozen blocks torn down in various stages of preparation for race builds.

Going on a road trip Fri-Sun out of state to look at some property so it might be early next week if I can't pull it off before tomorrow.

T

951and944S

BTW - to save me the trouble, what's the part #....?

Jon Shuerich at NOLA Sport used to be a parts manager for Crescent City, he's a parts hound and might be able to find some left undiscovered.

[edit] - 928 101 195 03

T

951and944S

Same as 928,

http://www.einmaligparts.com/Fitting...0_p_97143.html

tempest411

Thank you, I appreciate it. But won't that leave you in need of one for your block when you want to build it up?


Yes, that's it!