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Old 01-08-2019, 06:44 AM   #1
79powerwagon
 
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He351 hotpipe seal

Does anyone know if there is a readily available copper or graphite seal to fit an he351cw exhaust outlet flange?

My hotpipe consists of a 351 flange that was cut off of a bad exhaust housing, had some warp in it after welded, got it fairly flat on a disc sander, tried high temp rtv/foil and still have a bit of a leak.
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1979 Dodge Warlock W150 Ppump 12v/518
 
Old 01-08-2019, 07:15 AM   #2
gwhammy

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If you have any water jet guys around they can cut one easily.
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95,twd,rc,sb,351-ht60 twins,160modded, 09 f350 12 valve,
 
Old 01-08-2019, 08:46 AM   #3
crackerman

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There is an old thread, you may have to look for it, I think someone has used an egr gasket from a class 8 Cummins.
 
Old 01-08-2019, 08:53 AM   #4
79powerwagon
 
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Quote:
Originally Posted by crackerman View Post
There is an old thread, you may have to look for it, I think someone has used an egr gasket from a class 8 Cummins.
I saw that but it was a little fuzzy as to what the gasket actually fits.

Cummins # 3684359
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1979 Dodge Warlock W150 Ppump 12v/518
 
Old 01-08-2019, 05:01 PM   #5
79powerwagon
 
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Got measurements for the cummins seal. Roughly 4.5” od / 4” id so it will work for the he351.
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1979 Dodge Warlock W150 Ppump 12v/518
 
Old 01-08-2019, 06:43 PM   #6
79powerwagon
 
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Picked one up and with a little trimming works perfectly.
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1979 Dodge Warlock W150 Ppump 12v/518
 
Old 01-08-2019, 09:58 PM   #7
crackerman

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Nice
 
Old 01-09-2019, 01:37 AM   #8
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How thick is it? Is it like a grafoil style gasket?
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'98 3500 2wd, 24v, 5 spd, p-pumped
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Old 01-09-2019, 06:22 AM   #9
79powerwagon
 
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.054” yes its grafoil style with a steel inlay. Has a bit of a conical shape but it still works. I did have to pry my hotpipe back a bit to get it to fit between the flanges.

Any tips for sealing V-band in twins? - Page 2 - Competition Diesel.Com - Bringing The BEST Together
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1979 Dodge Warlock W150 Ppump 12v/518
 
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