 DIY to leak test heat exchangers with water and air, So you don't suffocate someone with exhaust fumes.... |
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| SpecialInt |
 Feb 4 2014, 07:22 PM
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#1
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Newbie  Group: Members Posts: 6 Joined: 3-December 13 From: Maryland Member No.: 16,722 Region Association: None  |
I have some SS heat exchangers for sale and someone asked if I had tested them for leaks. I had not. A few people chimed in with some procedures to test them. Thought I would document my test so anyone selling a set could easily check for leaks.
Needed. 1 valve stem. Long for alloy wheels. 1 one x six or similar 6 bolt 12 washers 6 nuts Some gasket material/ pond liner/ vinyl or similar You can get rubber plugs from Home Depot or make the with the items below. Home made plugs 4 lg fender washers 4 med fender washer smaller than exhaust tube at head. 4 small rubber washers 4 lg o rings 3 bolts/nuts Some basic tools. Cut some gasket material to fit the muffler end of the exchangers. Place it against the flange and mark the holes. Punch out the holes Place the 1x6 against the exchanger flanges. Mark the holes Drill the holes where marked Bolt the exchangers to the wood Fill the exchangers with water. Make sure you lift the head ends up where you fill the so they are full or close to full of water. Insert the plugs. If you made some like I did you will need an air gun to tighten them since you can't hold the nut. Insert the plug made with the valve stem. Lay them flat on the floor. Use about 20 PSI at the valve stem. The flanges started leaking at the gaskets but the heated air ducts showed no signs of leakage Attached thumbnail(s)  
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| McMark |
Feb 6 2014, 08:31 PM
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
I don't think the sitting water is a great test. The surface tension of water will keep it from wicking out of some hairline fractures. I think a pressure test is needed.
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| SpecialInt |
Feb 7 2014, 09:53 PM
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#3
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Newbie Group: Members Posts: 6 Joined: 3-December 13 From: Maryland Member No.: 16,722 Region Association: None |
To be fair to those who deserve credit (as Jim Kelly pointed out) this was not my idea.
It was brought to my attention by the person whom ultimately purchased them in the form of a question concerning whether I had tested them. I replied with a request for a procedure, and as the result of several responses, came up with the above method. Thanks for the dawn of the 914 Clean Air Act! |
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Posts in this topic
SpecialInt DIY to leak test heat exchangers with water and air Feb 4 2014, 07:22 PM
SpecialInt
I have some SS heat exchangers for sale and someo... Feb 4 2014, 07:24 PM SpecialInt More pics Feb 4 2014, 07:27 PM SpecialInt More Feb 4 2014, 07:30 PM SpecialInt More Feb 4 2014, 07:31 PM jimkelly :bump:
certainly more than one way to skin a cat... Feb 5 2014, 09:39 AM RFoulds I bought these because of how thorough he tested t... Feb 6 2014, 05:23 PM r_towle Amazing idea, not something I would have gone thro... Feb 6 2014, 06:29 PM barefoot I did a simpler test, corked the outlet ends with... Feb 6 2014, 07:48 PM Cap'n Krusty I've worked on literally hundreds, maybe even ... Feb 7 2014, 11:36 PM
930cabman
I've worked on literally hundreds, maybe even... Dec 12 2021, 05:15 PM Mark Henry Holy necro thread batman! :blink:
I use a c... Dec 12 2021, 07:08 PM |
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