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Rusty, here is a photo of my GM core mounts. There is an aluminum angle
welded top and bottom to core. A strip of that red rubber (1/8") baffling
stuff is clamped between the angle welded to the core and the matching angle
(the one with two lightening holes in it) on the mounting post (you can
barely see the white top of the mounting post). The matching angle on the
mounting post is bolted on (so I could make small adjustments to the angle
of the core as needed for the final fit). Does the rubber help? Don't
really know. But, I had another set of cores that sprung leaks - but
whether due to any vibration or just the heavy fittings cantelevered off the
radiator (which is what I suspect caused the leaks), in any case now have
180 hours on this set up with no leaks.
You can see the edge of the red rubber strip on the right core. I used
hinge around the front sides of the core to hold the plenum to the core.
The top and bottom of this hinge box is actually small aluminum angle that
is held by two long screws (top and bottom) to the welded angles top and
bottom, hinges are only on the sides. I can pull the hinge pins and remove
the plenum easily. Also, very little air leaking (if any)due to the fact
the plenums are held tightly to the core and I line the interface with some
weatherstrip foam.
This is an old photo when I was trying exit ducts - turns out in my case
they hurt more than helped and are no longer mounted.
Hope this helps.
Ed
Ed Anderson
RV-6A N494BW Rotary Powered
Matthews, NC
eanderson@carolina.rr.com
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