05-01-2020 | #11 |
Join Date: Aug 2004
Location: Spring Grove ,Pa.
Posts: 256
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Re: Transmission whine
My first 91 ZR1 had 4.10 gears and it was quiet. Now as to that stupid Valet key you should by pass it so you have full power all the time. Marc Haibeck recommends driving with the key in full power all the time. You can get carbon build up on the secondary valves as they are not getting fuel over them. He also recommends that you drive so you can have the secondary system open and working. Read this and other articles at ZR1 Specialist . Lots of good info.
http://zr1specialist.com/HAT%20Web/a...econdaries.pdf
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91 Turquoise Metallic Haibeck 525 #0134 |
05-02-2020 | #12 |
Join Date: Apr 2019
Location: Supply NC
Posts: 124
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Re: Transmission whine
Good morning, update on possible differential noise. I changed the fluid last night, used Mobile synthetic for limited slip, just got done driving her 15 miles or so and it quieted down about 80% I'd say. Still some noise but I think that may be the tranny. The old oil was nasty. Used a hand pump from Harbor Freight, worked well.
Also I was having a blue smoke issue with engine hot, I suspected MM oil that was put in the cylinders for storage had seeped into exhaust. I removed the complete exhaust system and happy to report no smoke at all now. I stood the exhaust up tail pipes down against the wall and oil is draining out. Next I decided to test secondaries, got the car nice and hot, switched valet to full power, from a roll it stumbled a bit the first time so I tried again and it seemed to work well, ran her up to 6500 rpm, and it felt good and sounded awesome. Thanks for all the help, I still have lots to do but have made much progress thanks to you guys, time to go drive this bad boy. |
05-02-2020 | #13 | |
Join Date: Apr 2007
Location: Lake Bluff, IL
Posts: 2,080
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Re: Transmission whine
Quote:
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2016 Long Beach Red Z06 #10281 "POPS Z" 1995 Polo Green #409 "WARP TEN"--Haibeck 350/510 package, 4.10s, Hurst, Stock Exhaust with QTP Cutouts --Sold but still running strong 1993 Quasar Blue #161 "HIL KING" --Sold but still running strong, now with more than 120,000 miles 1967 Marlboro Maroon/Saddle Corvette Coupe 300 hp/4-spd --Sold a long time ago ZR-1 Net Registry Founding Member #95 NCM Lifetime Member Favorite Quote--Attributed to Mickey Thompson: "Too Much Horsepower is Almost Enough" |
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