Don Dunbar wrote:

I have a new Mitsubishi Pagero 2000 model 4x4 which is 5500 lbs loaded

for my trips North.

This week I received a recall to have the radiator replaced.
Today had a close look at the radiator, It is all aluminium with plastic

tanks 28.5 long 19.7 high and 5/8" thick.

This radiator has cooled this 200 hp engine running at 3500 rpm for 14

hour straight in the Northern outback with temperatures around 35C.

On these fishing trips North I tow a Boat and trailer weighting 2500lbs.
This engine puts out 303 Nm at 3500rpm and 292 at 2000 rpm.
I will give this radiator a close inspection after they take it out and

find out what the problem is. If it is only a tank problem I will try and
get hold of it and do some figures on it .

Regards Don

The radiator may be fine, but most folks are a bit leery of plastic tanks,
altho I have
had them work fine for 10-15 years on my older Hondas.  BUT don't think that
because your owner's manual says "200 HP" that your car motor puts out that HP
ever, let alone anything like continuously.  Your 5500 lb 4x4 on a level road at
75 mph is probably using about 50 hp or so.  A typical rotary A/C
installation is
going to be pulling more like 150 hp in TO and climb and 100 or a bit more in
cruise, probably twice what the 4x4 puts out even under "heavy load" conditions.
The radiator may be just wonderful, and the higher speed of the A/C may (with
proper ducting) make it work just great.  Just be aware that "car HP" is
essentially
never actually used.  Typical "heavy duty" load factors are about 25% or less of
rated HP.  Passenger car load factors are in the 10-15% of rated HP in most
cases.

Bill
Long EZ builder & pilot
BSME, MSME
EAA Technical Counselor

 
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