Paul,
I've been looking for anti-collapse hose for my radiator return, but have
been unable.
my solution is to insert aluminum flex hose inside my radiator return hose.
it's 1/8 inch smaller than the inside diameter of my radiator hose.
I'll make sure the ends do not chaff the inside of the radiator hose.

http://www.mcmaster.com/#54995k17/=2jag5g

Do you see any potential pitfalls here?

Brian Trubee

That looks like a better solution  than the corrugated stuff Chuck Dunlap
used. Smoother inside.


Paul Lamar


Hey - that looks exactly like what I was wishing for on our install as well.

We (like Chuck I suspect) are using the corrugated rubber hose lines in
order to get a 90-degree curve.  I have always thought the corrugated hose
is not doing good things for coolant flow.  Our attempts to use the silicon
hose have always failed because it collapses in the bend.  I'll be very
interested to hear how well this works.

How do you plan on eliminating end chafing?

Mark (Rocky Mtn High)