What size is that radiator?
  Ken Welter

The rad is a Scirocco drag race built by Griffin.  I
bought it
from
Summit.    It is a double pass design.  The core is 13 x
18 x
2.5 =
585 cu in.  Overall is 13 x 22.   Jerry

May we ask how much this radiator cost, and what horsepower
you
expect it to
cool!!!

Thanks, Mike

The rad's cu.in are its plus and its thickness is the
negative.  I
am
hoping to cool 220 hp regardless of outside temp and throttle
setting
but only time will tell.  Inlet size, duct shape, and plenum
wedge
shape are all optimum according to what Paul has proposed thus

far.

The louvers looks like they could suck the chrome off a trailer
ball.
So I got my fingers crossed.   I bought the rad a year ago for
around
$200.00. It has since been chopped  up so many times, I am
welding
patches to the  patches.   If I were buying it again, I might
pay

a

little more to Griffin directly to have the mounting studs and
the
pipe fittings welded on.  While they were at it they could
leave
off
the filler neck.  The one thing I really like about this rad is
that
it is only 13 inches wide by 22 inches long overall.   It fits
under
the rotary like it was built for it.  Jerry

   I thought that Griffin was a glued radiator so I have steered
away
from them and have been buying Northern radiators as they are
welded.

  Ken Welter

Griffin is first welded and then epoxied.  Other  companies such as
C &
R make Scirocco style rads as  well and do not use epoxy.   Jerry

Thank you, Jerry for your info regarding radiators. I am at the point
of
planning one at this time. You mentioned that if you had to do it
ovekr
again, you'd have the pipe fittings already installed, and no filler
neck.
Does that mean no expansion tank area as well?  Thanks in advance for
your
reply.  Paul Conner, SQ2000 building.

I am planning to have an overflow tank tank mounted on the firewall.
Just today I learned of the universal bungs that C & R will be
supplying in the near future.   I may wait for them to come available.
My Griffin is 2.5 inches thick (two 1.25" rows).  C & R uses 1.375 rows
so you could make the rad a little smaller.  A 12" x 18" x 2.75" is 594
cu in and a perfect size to fit under the engine.  Jerry

BTW as an exercise for the reader how much HP does it take to
climb a 1800 pound gross weight  RV4 at 1500 feet per minute not
counting the HP required to over come drag. Show your calculations.

Paul Lamar
 
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