Doughnuts gasket alternatives.
#1
Senior Newbie Member
Thread Starter
Doughnuts gasket alternatives.
I recently purchased a new RB system . The only part im.missing is doughnut gasket 1757-40-356 . It is NLA and I don't have one on my current set up. I purchased a used 79 system but the guy who sold it to me lost / threw out that part .
Does any one know of an alternative or how they solved the issue ?
Does any one know of an alternative or how they solved the issue ?
#2
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if you know the inner diameter you could probably find one that works. Hondas use these more than Mazda
#7
Slow Car Fast
I believe that exhaust is a 2.5" od. I looked up 2.5" od doughnut exhaust gasket on Google and lots of stuff came up. You can measure the flange on the exhaust to see what one would fit. Just use a tape measure. As said lots are listed as Honda and even Subaru parts.
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#8
Happy Rotoring!
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Many of the exhaust gasket's are NLA now. This one is an all metal donut that shouldn't really wear out. Here's a pic with dimensions to find one similar. Or, if you know someone with a lathe, they could turn one pretty easily. The hard one to find is the rubber donut where the air pipe connects to the muffler. (2090-40-508A)
#9
Senior Newbie Member
Thread Starter
Many of the exhaust gasket's are NLA now. This one is an all metal donut that shouldn't really wear out. Here's a pic with dimensions to find one similar. Or, if you know someone with a lathe, they could turn one pretty easily. The hard one to find is the rubber donut where the air pipe connects to the muffler. (2090-40-508A)
I can have one made now with those specs .
Thanks Banzai .
#10
Out In the Barn
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Check out this PDF
2.265 is about 2 1/4"
1.6" is 1 3/5th
https://www.walkerexhaust.com/conten...%20Flanges.pdf
2.265 is about 2 1/4"
1.6" is 1 3/5th
https://www.walkerexhaust.com/conten...%20Flanges.pdf
Last edited by KansasCityREPU; 05-19-23 at 11:48 AM.
#11
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