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Member 911 Anonymous
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Opinion on my 186,000 mile bearing wear
If I may, Can you Master Re-builder share some input on my bearings and journal, please
        Finger Nail Tested the Journal, no Grooves or Blue Burn Marks. The IMS bearing appears to be gritty but shaft is smooth. TIA, Jim
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'85 Carrera Targa Factory Marble Grey/Black * Turbo Tail * 930 Steering Wheel* Sport Seats * 17" Fuchs (r) * 3.4 * 964 Cams * 915 * LSD * Factory SS * Turbo Tie Rods * Bilsteins * Euro Pre-Muff * SW Chip on 4K DME * NGK * Sienes GSK * Targa Body Brace PCA/POC Last edited by DRACO A5OG; 12-20-2016 at 10:38 PM.. |
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12-20-2016, 05:50 PM
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Registered
Join Date: May 2004
Location: Boulder, Colorado
Posts: 7,275
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Looks fantastic for 186K miles. Is that copper showing on part of the front IMS bearing? Is it the same on both sides? Due to the chains tugging the shaft sideways all those miles?
How are the thrust faces of the #1? |
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12-20-2016, 09:45 PM
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Member 911 Anonymous
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Thanks Master Walt,
Yes, that is copper showing thru, again glad I split the case to address the bearings.      The other half is showing more copper at the 2nd IMS bearing, pretty deep too.
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'85 Carrera Targa Factory Marble Grey/Black * Turbo Tail * 930 Steering Wheel* Sport Seats * 17" Fuchs (r) * 3.4 * 964 Cams * 915 * LSD * Factory SS * Turbo Tie Rods * Bilsteins * Euro Pre-Muff * SW Chip on 4K DME * NGK * Sienes GSK * Targa Body Brace PCA/POC |
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12-20-2016, 10:33 PM
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Slippery Slope Expert
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From what I've seen and read IMS bearing wear like that is pretty much the norm.
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12-21-2016, 04:32 AM
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Member 911 Anonymous
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...and the rods, rough measured and eye balled the Wrist Pin Bushings, all centered and both rod bearings and bushings on all seem to be within spec, remarkable. I will have shop verify and re-bush the wrist pin bushings.
All Rod bearings are worn, are all marked Porsche Part# 930-147-00 Main thrust bearing inner is definitely worn down :-(, measured below spec.    Taking journal for inspection, polishing and Snout Repair 
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'85 Carrera Targa Factory Marble Grey/Black * Turbo Tail * 930 Steering Wheel* Sport Seats * 17" Fuchs (r) * 3.4 * 964 Cams * 915 * LSD * Factory SS * Turbo Tie Rods * Bilsteins * Euro Pre-Muff * SW Chip on 4K DME * NGK * Sienes GSK * Targa Body Brace PCA/POC |
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12-21-2016, 01:17 PM
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Marble Grey
