Jeff,
I have a similar setup with my radiator. I put a high pressure cap on the radiator and a lower pressure cap on the expansion tank. It works great. No fluid
has ever escaped from the high pressure cap on the radiator.
Bob J. Rogers
Mazda 13B Turbo
Mustang II
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]
On Behalf Of Jeff Whaley
Sent: Tuesday, October 08, 2013 8:35 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Multiple coollant pressure Caps
My original radiator was custom-built and had no filler neck. I bought a new stock radiator that comes with a filler neck and pressure cap. I already have an expansion tank high on the firewall with a filler neck and pressure cap. The
radiator will be mounted under the engine. In this scenario is it acceptable to have 2 pressure caps? I don’t really want the second cap and am considering getting it welded shut - but do I have to? If the lower-mounted pressure cap has the highest pressure
rating I’m thinking it should be okay. Has anyone tried this?
Jeff
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