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

it says on the griffin site that they are heli-arc welded.
...Chrissi

That's the tanks. The tubes are furnace brazed.
The epoxy is to help seal the welds.

Is this good, bad or ugly? what is suggested or preferred alternative
and appropriate size for 300 hp?
...Chrissi

300/200 = 1.5 x 525 cubic inches = 787 cubic inches.
This is a wild ass guess. All depends on how well you get the air in
and
out. We don't have enough good systems around to judge.

Paul Lamar

The good thing about the turbo is that you don't have to run the
exhaust underneath the engine.  That frees up a  lot of room for a
monster rad.   When I bought my rad  the opinion on this list was that
at least 500 cu in would be necessary for a N/A engine.   The emphasis
(Paul)  has always been on getting plenty of air through smallish
radiators.  I think that is an aircraft reality.   Same idea for the
oil coolers of course.   If I recall correctly, Ian is flying pretty
well with about 400 cu in total in cheek rads and of course Tracy and
Ed are racking up the hours with cheeks that cannot be breathing
optimally.  So there is reason to think that a 500 cu in rad that has
excellent air flow will be adequate.   If I were starting over today, I
would order a double pass 14 x 18 x2.5 ( 630 cu in)  from C  & R with
1" female pipe fittings or whatever fittings you like.     There will
be room to run the exhaust beside this rad with enough separation for
shielding.   Wider radiators may be difficult to louver, maybe not.
Thinner radiators take up too much space for most installations.
Jerry

Well put Jerry.

Paul Lamar

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