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Main crankshaft bearings still an issue - NLA?

 
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AlexJ  



Joined: 07 Mar 2019
Posts: 7
Location: Madeira Island - Portugal

PostPosted: Thu Mar 07, 2019 6:02 am    Post subject: Main crankshaft bearings still an issue - NLA? Reply with quote

Hi all,
I have noticed through this board reading that over the times to get a main bearing crankshaft set has been difficult (STD) or almost impossible.
Is this issue sorted?
Are they available now?
If anyone knows any source, please inform.
Thanks in advance for any help.
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AlexJ  



Joined: 07 Mar 2019
Posts: 7
Location: Madeira Island - Portugal

PostPosted: Thu Mar 07, 2019 6:10 am    Post subject: Reply with quote

I forgot to say that the car in this case is a 924 Turbo from 81.
I have read so,ethereal that there are two bearing versions for this car.
Internal diameter 60 mm and 64mm.
Earlier cars have 60 mm crank diameter and latter cars have 64mm.
My car’s crankcase has 64 mm crank diameter...

Can anyone confirm this information?
I believe the bearings for the 64 mm are easier to find?
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Fifty50Plus  



Joined: 28 Feb 2008
Posts: 1353
Location: Washington DC area

PostPosted: Thu Mar 07, 2019 8:51 am    Post subject: Reply with quote

Just measured a couple cranks, turbo and NA. Both 64mm mains. I believe only the 76/77 early cars had the 60 mm crank. Either way, first turbos were later cranks (64 mm). BTW turbo and NA cranks are identical except for the location of the input shaft bearing. Totally swapable.
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AlexJ  



Joined: 07 Mar 2019
Posts: 7
Location: Madeira Island - Portugal

PostPosted: Thu Mar 07, 2019 10:05 am    Post subject: Reply with quote

Thanks for your explanation !
I have seen many adds at the ebay (glyco sets for example), but they are indicated for engines 85 - up... 2.5 engines and further...
Sorry my ignorance but, do these 2.5 engines have a different crank?
or.. is it the same block???!!
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MikeJinCO  



Joined: 08 Jun 2010
Posts: 1227
Location: Maysville, Colorado

PostPosted: Thu Mar 07, 2019 10:24 am    Post subject: Reply with quote

Yes, the 2.5 924S motor is a Porsche motor from the 944, a completely different motor. I doubt there are any interchangeable parts. EBS Racing had the last known supply of 924 main bearings.
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Goldwolf  



Joined: 25 Jun 2017
Posts: 264
Location: Athens,GA

PostPosted: Thu Mar 07, 2019 10:33 am    Post subject: Reply with quote

I need some, but engine guy can machine the crank and use the oversize, which are easier to get.

I called EBS about 10 days ago and they had a new run being checked for quality, then sending the order to make them. They said about month after the order they would have them.

I need check in on the progress.
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nickthompson  



Joined: 26 Mar 2013
Posts: 873
Location: Central Georgia

PostPosted: Thu Mar 07, 2019 11:31 am    Post subject: Reply with quote

They are available in Europe. One of the guys on the 924 owners group in Facebook posted a link to a place that had them.
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Goldwolf  



Joined: 25 Jun 2017
Posts: 264
Location: Athens,GA

PostPosted: Thu Mar 07, 2019 1:35 pm    Post subject: Reply with quote

I could find only one link but it doesn't seem helpful. If you can find it please share.
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AlexJ  



Joined: 07 Mar 2019
Posts: 7
Location: Madeira Island - Portugal

PostPosted: Thu Mar 07, 2019 2:39 pm    Post subject: Reply with quote

nickthompson wrote:
They are available in Europe. One of the guys on the 924 owners group in Facebook posted a link to a place that had them.


Thanks for that!
I have been watching all their posts but couldn’t found it...
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AlexJ  



Joined: 07 Mar 2019
Posts: 7
Location: Madeira Island - Portugal

PostPosted: Thu Mar 07, 2019 2:39 pm    Post subject: Reply with quote

Goldwolf wrote:
I need some, but engine guy can machine the crank and use the oversize, which are easier to get.

I called EBS about 10 days ago and they had a new run being checked for quality, then sending the order to make them. They said about month after the order they would have them.

I need check in on the progress.


Alreadycontacted them... 8-12 weeks until they are done... can’t wait that long!
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Carrera RSR  



Joined: 08 Jan 2010
Posts: 2309
Location: Somerset, UK

PostPosted: Thu Mar 07, 2019 7:52 pm    Post subject: Reply with quote

Limited availability via Karl/colonel @ 924ownersclub in UK or Mittelmotor in DE
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Then www.924board.org/viewtopic.php?t=31252
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924RACR  



Joined: 29 Jul 2001
Posts: 8794
Location: Royal Oak, MI, USA

PostPosted: Thu Mar 07, 2019 10:54 pm    Post subject: Reply with quote

Goldwolf wrote:
I called EBS about 10 days ago and they had a new run being checked for quality, then sending the order to make them. They said about month after the order they would have them.


That's wonderful news... I ought to hit them up and get on the list for some...
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Kenodog  



Joined: 25 Jun 2003
Posts: 2645
Location: Vancouver,B.C.

PostPosted: Fri Mar 08, 2019 3:57 am    Post subject: Reply with quote

I would wait the 8-10 weeks and get them from EBS. Mittlemotor prices are just zooming around the realm of insane.





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AlexJ  



Joined: 07 Mar 2019
Posts: 7
Location: Madeira Island - Portugal

PostPosted: Fri Mar 08, 2019 11:27 pm    Post subject: Reply with quote

Carrera RSR wrote:
Limited availability via Karl/colonel @ 924ownersclub in UK or Mittelmotor in DE


Thanks for that but I couldn’t find any of those names on the owners club web page.
Do you have any contact to these people?
Thanks in advance for any help.
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Mike9311  



Joined: 14 Dec 2004
Posts: 1678
Location: Chicago-ish

PostPosted: Sat Mar 09, 2019 2:22 am    Post subject: Reply with quote

Ok, I am going to let out a tease...Been holding this one close to my chest for a while now

I have a solution in the works. A solution that should give us bearings for a long time with many size options

Sorry for being so vague but I want to make sure it goes as planned and is tested...I guess now I should accelerate this project too

the teaser pic. Top Left: OEM / Bottom Right: My solution (high quality source)


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