TAC Tech => Mechanical => Topic started by: pozarcar on January 31, 2024, 09:32:56 PM
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I'm refreshing the exhaust on my 78 T/A. I have new manifold gaskets. What (if any) gaskets go in the Y pipe connections to the manifolds, and between the square flanges at either end of the catalytic converter? Thanks.
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No gaskets in those areas if still original style.
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Interesting. I remember by 79 301 car using a fiber ring with silver paste on it. But not sure if other models us it.
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Might be model specific or brand of exhaust etc. Some joints use that cone ring also but still no gasket. I had a quick look at some exhaust diagrams, only a few, they show gaskets elsewhere if they exist but none in these locations, so I added that since no one else was replying. Aftermarket or stock replacements may be different, a seal probably doesn't hurt either, if it has trouble...sealing.
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Service Manual states that due to the ball seal type sleeves and slotted-joins that the need for gaskets are eliminated from the factory system. Sealing paste may be used if needed. Lots of diagrams, drag it out for a look.
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I have a low mileage original Y pipe in my attic. I'll check it today as I must be remembering wrong as I swear I bought a gasket for that spot but my memory is fading.....
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Appreciate all the thoughts guys.
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Yup, I am losing it.... There were no provisions for gaskets on the exhaust I had in the attic.