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04-28-2020
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#1 |
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Join Date: Apr 2020
Location: Liberty Hill Texas
Posts: 5
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Rear main puking oil?
Wouldn’t you know it. I’ve had the car all of three days. I’ve noticed if I run the car fairly hard I’m seeing oil on my drive way. Looks like the rear main area. Normal driving and nothing shows. Any ideas? 2011 ZR1.
Picture for attention it’s not that big. |
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04-29-2020
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#2 |
 Join Date: Jun 2015
Location: Texas
Posts: 530
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Re: Rear main puking oil?
Are you sure its not coming from up above and tracking down? There some oil leak areas like one of the header bolts that goes into an oil gallery, or the back of a cam cover. When I got mine I had a similar leak, and retorquing the oil pan bolts cured it for the past few years. The tech solutions part of this forum discusses most of the common oil leak areas. There is also Crossed Flags Performance in Magnolia/Tomball, Steve and his crew can fix you up in any case.
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04-29-2020
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#3 |
 Join Date: Jun 2005
Location: CenCoast California
Posts: 899
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Re: Rear main puking oil?
My '19 had a defective rear main seal which was replaced under warranty.
If the rear main is bad, there will be oil weeping from the part line between the clutch housing and the block. It's unusual for one-piece rear seals to leak, but it happens.
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Hib Halverson Technical Writer former owner 95 VIN 0140 current owner 19 VIN 1878 |
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04-29-2020
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#4 |
 
Join Date: Apr 2007
Location: Northern VA
Posts: 2,661
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Re: Rear main puking oil?
Reminds me of my old high school buddy’s 650 Triumph Bonneville.
He claimed it was just marking its territory. Sent from my iPhone using ZR-1 Net Registry
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Phil Wasinger 1994 Torch Red ZR-1 WAZOO Member George Braml Intake |
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04-29-2020
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#5 |
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Join Date: Apr 2007
Location: Northern VA
Posts: 2,661
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Re: Rear main puking oil?
Probably sometime leaking up in the valley making it way down the drain tube.
Sent from my iPhone using ZR-1 Net Registry
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Phil Wasinger 1994 Torch Red ZR-1 WAZOO Member George Braml Intake |
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04-29-2020
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#6 | |
Join Date: Nov 2016
Location: Southlake, TX
Posts: 592
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Re: Rear main puking oil?
Quote:
No issues since
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Bill Schroeder Texas Proud! 1991 Corvette ZR1 #1388 2015 Challenger Scat Pack Shaker 
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04-29-2020
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#7 |
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Join Date: Apr 2007
Location: Northern VA
Posts: 2,661
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Re: Rear main puking oil?
I’m with Hib. Unusual to see one piece rear main seal leak that bad.
Sent from my iPhone using ZR-1 Net Registry
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Phil Wasinger 1994 Torch Red ZR-1 WAZOO Member George Braml Intake |
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04-30-2020
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#8 |
Join Date: Oct 2004
Location: Folsom CA
Posts: 1,655
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Re: Rear main puking oil?
I think he's got the wrong forum, the airdam on the pic looks to be a C6 not a C4.
His signature might be a clue too..... 'Crabs
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TomC '90ZR1 #792 Honorary Pirate [B]If it ain't FUN, you're doing something terribly WRONG. [/B] |
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04-30-2020
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#9 | |
Join Date: Dec 2003
Location: Arcadia,OK
Posts: 3,394
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Re: Rear main puking oil?
Quote:
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Jerry Downey JERRYS LT5 GASKETS & PARTS http://www.jerrysgaskets.com 1994 ZR-1, Black/Black, Lingenfelter Aerobody, 416cu in, 3.91 gears, coil-over susp, Brembo brakes, etc. 2016 Black-Red, 3LT-Z51 Auto 8-speed. |
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04-30-2020
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#10 |
Join Date: Jun 2006
Location: Sparks, NV
Posts: 2,852
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Re: Rear main puking oil?
All ZR1s are welcome here. I’m thinking maybe we should establish separate C6 and C7 ZR1 sections here on the forum. Thoughts?
H 
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90'ZR-1 #1461 Red/Black Ported Intake, Degreed Cams, OBX Headers & Exhaust, Fidanza FW, Secondary Delete, Custom tune, C6 GS Wheels. Sold 08 C6 Z51 Crystal Red Metallic Sold Vararam Intake, Tune, Sold 05 C6 Z51 Red/Black Sold 90'ZR-1 #1723 Black/Gray Sold but not forgotten 91' Z51 L98 White Vert. My First, you always remember your first. Sold. |
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