74 style heat exchangers

[jmeckles]

How do you identify a pair of '74 "style" heat exchangers? How do you test them to make sure that they do not leak? Thanks in advance for any and all help!

[wvicary]

There will be a nine digit part number often starting with 901, your local dealer should be able to cross that number to a production model year. As for testing for leaking I don't know of any effective easy way.

[berny]

The early heat exchangers were handed left and right and had the outlet pipe at the rear round pipe oval 2 bolt flange. The later 74 on ones were not handed the outlet is at the left hand front oval ish pipe with 3 bolt flange, as for leaks if the heat exchanger case looks ok they should be ok they rust from the outside so if they look rough they are! Regards Berny. By the way the part no starts 930.

Edited January 25, 2012 by berny