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#21 | |
![]() Join Date: Feb 2009
Location: Alexandria, Virginia
Posts: 1,469
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![]() Glad we got it fixes for you Yun!! Rich
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1990 Bright Red Coupe #608 380 Stroker, Ported Heads/Intake/Housings/TB Haibeck Secondary Delete Chip / Pete's Cams George Braml Intake / FIC Injectors Coated SW Headers / Corsa Bill Boudreau B/B ZF6 / Viper 4.10 gears Ron Davis Radiator Pioneer AVIC-Z140BH NAV Fikse FM5's 285 / 335 / C6 Brakes WAZOO Member |
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#22 |
![]() Join Date: Aug 2006
Location: McLean, VA
Posts: 3,710
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#23 |
![]() Join Date: Jul 2004
Location: Sudbury, Ontario. Canada
Posts: 1,538
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Yun
Must be that Hulk-like physique you have... you're stomping too hard on the pedal! ![]() Glad you got it fixed! Dave
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1991 #1516 Black/Black davidmkelly.com "Speed is often confused with insight." - Johan Cruijff |
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#24 |
![]() Join Date: Aug 2006
Location: McLean, VA
Posts: 3,710
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#25 |
![]() Join Date: Apr 2007
Location: Northern VA
Posts: 2,650
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Yun,
Glad you're back up running again. A new page in the annuls of ZR-1 part failure experiences. We've heard of clutch forks bending however, this is the first one I recall of breaking. Having personally inspected that fork a few months ago when we changed the DM flywheel out, and given the symptoms, I was confident the TO bearing had parted like Jim's did a while back. I was totally surprised then to see the clean fatigue break across the rivet hole. I meant to give it a closer look, but was there any evidence at the rivet hole that is was starting to break before it totally failed?
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Phil Wasinger 1994 Torch Red ZR-1 WAZOO Member George Braml Intake |
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#26 | |
![]() Join Date: Aug 2006
Location: McLean, VA
Posts: 3,710
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If you recall the pivot stud was chewed up pretty bad when we took it apart the last time. Using clutch w/ chewed up stud could have been putting extra stress on the fork. |
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#27 |
![]() Join Date: Aug 2012
Location: Ellicott City, MD
Posts: 1,656
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Just back from a trip to New Orleans and sorry I missed out on the education. Glad your up and running again.
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Charlie __________ Dredgeguy WAZOO Member 1992 Bright Red/Black ZR1 #246 Dana 4:10 gears Polished LT5 by Haibeck Polished Fikse FM5's with Michelin Pilot Sport 2 Stainless Works headers and cats with Corsa |
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#28 |
![]() Join Date: Apr 2007
Location: Northern VA
Posts: 2,650
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Yun,
In the main break area you see clean white steel. Appears the fracture started at the rivet hole. Is the surface condition in the rivet hole vacinty just as clean or does it look like a small fatigue crack may have developed before the major failure occured?
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Phil Wasinger 1994 Torch Red ZR-1 WAZOO Member George Braml Intake |
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#29 |
![]() Join Date: May 2007
Location: Westminster, Maryland
Posts: 3,687
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I have the failed fork on the WAZOO "trophy" wall. I will inspect it and try to determine if there are any indicators that could be used to inspect forks when access is available. I will let you know.
Jim |
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#30 | |
![]() Join Date: Aug 2006
Location: McLean, VA
Posts: 3,710
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Great to have engineers around... |
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