SSI heat exchanger warning |
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SSI heat exchanger warning |
914ltd |
Oct 6 2011, 06:34 AM
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#1
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Member Group: Members Posts: 239 Joined: 18-April 03 From: Peoria, IL Member No.: 581 Region Association: None |
I posted this last year, heating season is here again. These are big cracks, a tiny one you would not be able to hear would still be dangerous. These are not accident damaged. If you have a set on your car, grab the carbon monoxide detector from home and take a ride with the heat on and windows rolled up. There is a detector used in small aircraft also available. The last photo is how we now test for leaks using air pressure. Brad
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barefoot |
Sep 26 2015, 07:01 AM
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#2
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Senior Member Group: Members Posts: 1,282 Joined: 19-March 13 From: Charleston SC Member No.: 15,673 Region Association: South East States |
I just checked my 1.7/1.8 SSI's and neither the tubes or the shields are magnetic which means the are 300 series SS, probably 304 one of the least expensive grades and should be good good choices. The 300 series are called 18-8 grades which is 18% Ni and 8% Chrome with most of the balance Iron.
The magnetic grades are 400 series and are just 12% Chrome balance mostly Iron. These grades can be hardened by heat treat so that's what hunting knives are made from. BTW I pressure tested mine are are OK. Barefoot |
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