This is a stock $200 single pass all aluminum Summit Howe racing rad
modified
by Ed Klepeis to a two pass design. The core is 15 inches wide
and 24 inches long 2.25 inches thick. A bit overkill for an NA
engine if you do the ducting right. I will go turbo eventually
so I think I will need the extra core volume.

Ed did a beautiful job modifying this rad from a single pass to a two
pass and reworking the front tank. Ed is a real artist with a
tig welder. Not that two pass is any better or worse than a one pass
rad but a two pass simplifies and shortens the water plumbing.

The rad will be mounted horizontally under the engine with air coming
in on the top below the oil pan and going straight down and out the
bottom of the cowl.
I can adjust the angle slightly down at the front if I need more
cooling
during climb out. In my testing on the Dodge van this core flowed 40%
of forward
velocity with a simple Kays & London wedge shaped diffuser duct.

I had Ed put the input and output as far over to the left as possible
so the water pump plumping length will be minimized. The stock
oil cooler will be mounted along side on the right. If I had it to
do over I would try to find a shorter core than 24 inches. 19 inches
would be
much easier to squeeze into the stock KIS Cruiser cowl.

Paul Lamar

Ed does beautiful work.  I'm going to visit him soon.  Hope some of
that TIG talent wears off on me.

  Two other subjects that are worth quick note.    First, there is a
stainless steel in the 200 series that will handle sustained 2000
degree temps. Technical data will be in my hands tomorrow.  I have been
told it is available in sheet and thin wall tubing. As soon as I know
more, I will let every one know.  It is supposed to perform  similar to
inconel and is much cheaper.  Apparently,  when heated the first time,
a thin oxide is formed which STRONGLY adheres to the surface, giving a
very high level of protection against further corrosion.     Secondly a
very nice Tailwind owned by a good friend and powered by a 180hp 0-360
is achieving 245 mph in smooth air level flight.    It will go faster
but right now that is the self imposed speed limit.
All it needs is a 220 hp PPorted 13B.   Jerry

 
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