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#11 | |
![]() ![]() Join Date: Aug 2009
Location: South Dakota/California
Posts: 3,794
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When you say PS pulley has run out......you mean the pulley is not on the shaft perpendicular? That happens sometimes but does the pulley have any play when you pull and push on it? If not.....having a bit of run out just means the pulley was not pressed on the shaft perpendicular. I think my Aluminum PS pulleys have a bit of run out also but no issues.
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Left Clickable links ![]() -Solutions- LT5 Modifications/Rebuild Tricks Low Mileage ZR-1 Restoration 1990 Corvette (L98) Modifications LT5 Eliminated Systems LT5 Added Systems LT5/ZR-1 Fluids 1995 LT5 SPECIFIC TOP END REBUILD TRICKS Last edited by Dynomite; 07-20-2017 at 10:04 AM. |
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#12 | |
![]() Join Date: Jul 2013
Location: Central Iowa
Posts: 190
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Will plan to get a new PS pulley on order shortly too.
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[CENTER][SIZE=4][COLOR=red]1990 ZR-1 Red / Red[/COLOR][/SIZE][/CENTER] |
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#13 | |
![]() Join Date: Jul 2013
Location: Central Iowa
Posts: 190
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I found grinding marks on the underside of the TBH last night, so I will trim and reinstall the alt. OK, I think you are understanding what I'm trying to say. I bet you are correct, it may not be on perpendicular. There is no play when I push and pull. It seems solid like it should be.
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[CENTER][SIZE=4][COLOR=red]1990 ZR-1 Red / Red[/COLOR][/SIZE][/CENTER] |
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#14 |
![]() Join Date: Jul 2013
Location: Central Iowa
Posts: 190
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Well that was fun!! Guess what!? All mechanical parts are good. Whistling / squealing noise behind the alternator was a small plenum leak.
Kudos to Marc H. for some awesome telephone support to help diagnose. He really has a great mind for isolating and getting to the root of problems. This morning we thought the alt was rubbing on the underside of the throttle body extension but found after a few simple checks this wasn't the case. Anyway, its "fixed" for now with some high temp aluminum thermal barrier material I was using on my '68 for the firewall.
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[CENTER][SIZE=4][COLOR=red]1990 ZR-1 Red / Red[/COLOR][/SIZE][/CENTER] |
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#15 |
Join Date: Aug 2016
Location: Spring Hill, FL
Posts: 127
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I had a squeal in mine , it was the clutch bearing in the compressor . It actually came apart and cut of the snout off the compressor at the snap ring and they don't sell the front piece of the compressor by itself , so you have to get an entire compressor or find a core !
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Tags |
alternator, water pump |
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