Exhaust Flange Gasket

Mopar Exhaust Systems

  1. live4theking

    live4theking Old Man with a Hat

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    What are you guys using for a gasket between the exhaust manifold and the exhaust pipe at the flange. It seems every time I turn around either the bolts are loose or I'm having an issue with a leaking gasket.

    When I've had to replace the gasket I've just gotten the ones that are available at the local parts store for a few bucks.
     
  2. HWYCRZR

    HWYCRZR Senior Member FCBO Gold Member

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    I ha found an expensive one (compared to the $2.00 parts store version). It bid double thickness. It requires a light torque and so far hasn’t burned through like the last two. I have the info somewhere I will find it.
     
  3. HWYCRZR

    HWYCRZR Senior Member FCBO Gold Member

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    Here it is. REMFLEX Graphite.
    So far so good after 2,000 miles. My other ones didn’t last 1,000 miles before burning up.
    image.jpg image.jpg
     
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  4. live4theking

    live4theking Old Man with a Hat

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    Thanks Marty. The 2-1/2" variety is available from summit RFL-8070.
     
  5. 73Coupe

    73Coupe Senior Member

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    What bolts are you using?

    I have found that the originals work best....they expand and contract with temperature at the same rate as the cast iron logs. If stainless or other metal is used, with different expansion rate, this can cause premature gasket failure.
     
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  6. live4theking

    live4theking Old Man with a Hat

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    I believe that they are grade 8 bolts? What were the original bolts?
     
  7. HWYCRZR

    HWYCRZR Senior Member FCBO Gold Member

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  8. 65sporty

    65sporty Old Man with a Hat

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    I have use Remflex header gaskets on a couple of engines and they work great
     
  9. live4theking

    live4theking Old Man with a Hat

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    I finally put these in last night. What a difference. I had no idea how much of an improvement these would be. I expected there was a bit of a leak, but oh my what a difference. It doesn't sound like the same car. I hope they lost well.
     
  10. HWYCRZR

    HWYCRZR Senior Member FCBO Gold Member

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    I have had my Remflex gaskets on now for about 4,000 miles with no issues including a couple of 6-8 hour runs with just shutting down for gas.
     
  11. live4theking

    live4theking Old Man with a Hat

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    That's good to know.

    One of the best things about last night was Aaron(11 yrs) helping out. Courtesy of a power steering leak that keeps everything on the drivers side lubed up he was looking like a grease monkey. I got a good laugh out of it. Remembering my Dad calling me a grease monkey the first time I changed the oil in a car.
     
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  12. 73Coupe

    73Coupe Senior Member

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    I just ordered a set, thanks for the info!

    I had Fel-Pro flange gaskets on there for a couple years and a few thousand miles, one side had just developed a leak.