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Registered
Join Date: Jul 2003
Location: Valencia Pa.
Posts: 8,859
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Oem bearings or Glyco, any difference?
I have heard of some qc issues with Glyco in recent years, any truth to this ? I have also always assumed that when you bought oem, you were getting Glyco in Porsche packaging.
I should have some boxes back from the machinist in the next couple of weeks, so I have to start getting my parts list together. Don't mind spending the extra coin, just want to make sure I am getting what I pay for.
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No left turn un stoned |
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07-06-2011, 05:31 PM
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Join Date: Jul 2008
Location: Baltimore, MD
Posts: 153
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I heard that the rod bearings from aftermarket supplies have had some issues lately as well. I tried to order Factory 2.4 rod bearing shells and Stoddard had 3 half shells and the rest would have had to come from Germany. And the cost would have been almost $400 for just the shells. I could not wait a month for the order to arrive, so I used the aftermarket ones(15 year old stock) that we supposed to be ok. I am no expert, but my machinist is and confirms that there is an issue, either in the composition of the materials, or something else has changed. From what I understand is that under severe racing conditions they just do not hold up.
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2000 VW TDI 224HP/400FT TQ. Pikes Peak World Record Holder 2007 "Fastest Diesel Car" 1973 Porsche 914/6 2.4L Engine rebuild in progress |
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07-06-2011, 05:47 PM
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Schleprock
Join Date: Sep 2000
Location: Frankfort IL USA
Posts: 16,639
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Yep the guys in the know that do this work on a daily basis have confirmed the aftermarket Glyco bearings are notsogood these days. Here's some comments from the experienced when friend cstreit had a problem with his engine.
This bearing... Still crap in my oil?
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Kevin L '86 Carrera "Larry" |
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07-07-2011, 09:25 AM
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GT3 rod bearings ok for 964 crank? WRONG -- see next post
GT3 mains are not -- is that correct? ARE OK -- see next post Any experience with SmartRacing Calico Coated Rod Bearings .... other than they're not cheap.... M
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2015 Panamera Hybrid, 2008 Cayenne Twin Turbo 2001 996 GT2 1999 Spec Boxster, 1996 993 Cabriolet 1992 964 Cabirolet, 1975 911 RSR Replica Race Car Last edited by txhokie4life; 07-07-2011 at 11:32 AM.. |
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07-07-2011, 10:56 AM
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Join Date: Jun 2003
Location: Camarillo, Ca.
Posts: 2,418
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Quote:
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Aaron.  F.S. 1965 Solex engine w carbs/cleanerBurnham Performance https://www.instagram.com/burnhamperformance/ |
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07-07-2011, 11:09 AM
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I had previously used Clevite 77 bearings when rebuilding my friend's 911...but after checking online...I can't seem to find them in Clevite's latest catalog.
I prefer them to any other...because they came with grooves already machined in...and had hardened back shells. They were available in several different styles...some with radiused sides to get better oiling. I have also seen a set with what appears to be a "leaf" style set of grooves in the surface to promote oil dispersion on the journal. Good luck in the rebuild. Bob
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Bob Hutson |
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07-07-2011, 01:27 PM
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Harley
