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Old 06-16-2003, 11:22 AM
boboh1 boboh1 is offline
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Just got back my 67 GTO from the shop. They rebuilt the engine and transmission, but I now have what appears to be an oil leak from the rear main seal. How can this be with only 100 miles on the rebuild? The place that did it is pretty crappy and I am going to have to fight with them to fix this and other things as well. If it doesn't work out, I will post a warning in the BBB section.

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Old 06-16-2003, 11:22 AM
boboh1 boboh1 is offline
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Just got back my 67 GTO from the shop. They rebuilt the engine and transmission, but I now have what appears to be an oil leak from the rear main seal. How can this be with only 100 miles on the rebuild? The place that did it is pretty crappy and I am going to have to fight with them to fix this and other things as well. If it doesn't work out, I will post a warning in the BBB section.

  #3  
Old 06-18-2003, 06:21 PM
Robby D Robby D is offline
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Two things-

Did they use a rope seal? Shame on them if they did; the BOP viton seal is the way to go, even at 35 bucks, it beats pulling the engine again.

Check to make sure it isn't the trans leaking (only if you have a manual, red fluid is hard to confuse with oil).

  #4  
Old 06-22-2003, 06:36 PM
goatang goatang is offline
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common problem-I also blew a finger size hole out of a new rebuilt engine. A "rag seal" was used and it is not good. Viton is only way to go and so easy to install. There are dozens of posts in archives on this subject. It is cheap fix except for all the work pulling engine again. Live and Learn. Best wishes and HAPPY MOTORING

  #5  
Old 06-24-2003, 01:01 PM
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schlitzman schlitzman is offline
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I had the same problem. What I thought was a leaky seal turned out to be loose bolts on the oil sump. Carefully snug the bolts in an opposing design. Don't forget the one underneath the starter. This stopped my leak permanently. Also, avoid synthetic oils--- they'll always find a way out.

Good Luck!

  #6  
Old 06-24-2003, 01:32 PM
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SupergasDil SupergasDil is offline
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I had a leaky rear main on my last 455 too. So last ditch effort before pulling the engine I dropped my pan, got the old seal out, sprayed carb cleaner in the groove to clean it, loaded the new viton seal with silicone on the back, a little oil on the lip and slid her up around and let her sit over night. Said a prayer and fired the next day. No leak. BOP Viton, the only way to go.

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  #7  
Old 06-24-2003, 02:43 PM
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Skip Fix Skip Fix is offline
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Mine was a leaky 3 "tit" pan seal.

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1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever!
1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand
1965 GTO 4 barrel 3 speed project
2004 GTO Pulse Red stock motor computer tune [email protected]
1964 Impala SS 409/470ci 600 HP stroker project
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1964 Corvette Coupe 327 4 speed
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