 ? 75-76 heat exchangers, I think mine tested good |
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| rfinegan |
 Oct 14 2015, 05:57 PM
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#1
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Senior Member  Group: Members Posts: 973 Joined: 8-February 13 From: NC Member No.: 15,499 Region Association: MidAtlantic Region 
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Today I was installing my Triad muffler to my 75 stock exhaust to hook up the heating system for the season and I am getting exhaust fumes in the cabin. I think i have a cracked pipe or leak. Looking for a pair of exchangers from a 75 or 76. I have the other pipes in good working order. If you have one, let me know which side. I will update with detail one I determine which one is failing or both..
best -Robert |
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| TheCabinetmaker |
Oct 14 2015, 06:00 PM
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I drive my car everyday Group: Members Posts: 8,300 Joined: 8-May 03 From: Tulsa, Ok. Member No.: 666 |
Have several good pair. Cheap.
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| hencar |
Oct 14 2015, 06:26 PM
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Member Group: Members Posts: 73 Joined: 30-May 06 From: Little Rock, Arkansas Member No.: 6,097 |
Pm sent on a set of stock 75 -75 stainless steel heat exchangers.
Henry |
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| bdstone914 |
Oct 14 2015, 08:49 PM
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bdstone914 Group: Members Posts: 4,517 Joined: 8-November 03 From: Riverside CA Member No.: 1,319 |
QUOTE(hencar @ Oct 14 2015, 05:26 PM)  Pm sent on a set of stock 75 -75 stainless steel heat exchangers. Henry Stock heat exchangers are not stainless. They are a coated steel. Bruce |
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| rhodyguy |
Oct 15 2015, 11:34 AM
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Chimp Sanctuary NW. Check it out. Group: Members Posts: 22,076 Joined: 2-March 03 From: Orion's Bell. The BELL! Member No.: 378 Region Association: Galt's Gulch |
Right. They only appear to be stainless steel.
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| rfinegan |
Oct 15 2015, 02:21 PM
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#6
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Senior Member Group: Members Posts: 973 Joined: 8-February 13 From: NC Member No.: 15,499 Region Association: MidAtlantic Region
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Thanks All
I think mine are still good. Here is how i tested. Turned the heat on High! it get very hot inside /windows up. I had each on my sons hold a shop rug over the exhaust tips (dual tips)I put a few revs to the engine about 1500 and poured 2 cycle oil down the left carb and looked for smoke inside car and around HE, repeated for right side. Lots of smoke behind and under the car but none inside. A crack surely should have filled the inside of the car with smoke. Lots of great offers from members, just unclear if I need them at this point. Thanks again to everyone who responded. My car runs rich and I must be getting un burn fuel smell via fresh air inlets and unsealed engine compartment. |
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| malcolm2 |
Oct 15 2015, 06:38 PM
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Advanced Member Group: Members Posts: 2,745 Joined: 31-May 11 From: Nashville Member No.: 13,139 Region Association: South East States
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that seems like a good test for the leak, but not so good for the engine. Just a test, right? anyway, It would seem that someone would have a way to test them. I do know the SS ones have thinner pipe walls, so they are the ones that crack. Have not heard of a late pipe cracking.
If I was to test I might remove the pipe, plug one end and toss a smoke bomb in the the other. plug that end and see if any smoke comes out of the HE seam. Short of taking the HE tin off, not sure. Good luck. BTW: if you need or want some crappy late pipes, I have 3 sets under my house. Clark |
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| 914ltd |
Oct 15 2015, 07:53 PM
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#8
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Member Group: Members Posts: 239 Joined: 18-April 03 From: Peoria, IL Member No.: 581 Region Association: None
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I have yet to see a crack in original heat exchangers, any type or year 914 or 911/912. I suppose if the outer shell had been patched enough times or collision damage were a factor it's possible. The SSI's at least 914's are known to crack. Brad |
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