Don't know what pressure a heater core is designed to hold, but guessing
it's under 40psi. If you have a way to monitor the water pressure, you could
hook up a hose to one end of the heater core and plug the other.
Another alternate method would be to use an air compressor with a pressure
regulator. Bring it up to 30psi (or whatever is right), and brush soapy
water over the core. If there's a leak, you'll get air bubbles. This is a
great way to find those tiny leaks.
A cheap way would be to run longer hoses from engine to heater core sitting
on ground. Might need to add water to make up for the longer hoses. If it
leaks, it won't be inside the car.
Let us know what you try and what works.
` ___ '
Pete - (O o) -
----------------------ooO--(_)--Ooo---------
Lake Forest Park, WA
1966 1600 (SPL311-00799)
-----Original Message-----
From: owner-datsun-roadsters@autox.team.net
[mailto:owner-datsun-roadsters@autox.team.net] On Behalf Of John F Sandhoff
Sent: Monday, June 27, 2005 12:06 PM
To: datsun-roadsters@autox.team.net
Subject: testing a heater core
Is there a good way to test a heater core (out of vehicle) for leaks? I have
a couple of cores that I'm not sure of, and I'd like to rebuild my heater
with one that won't get my feet wet :-)
Local shops want about 40 bucks to test, which gets especially painful if I
have them test multiple cores. I'm especially concerned about finding tiny
leaks that would drip ever so slowly.
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