MaxFix in Slacks creek have
fitted a very, very healthy 13B into a Mazda RX2 & in conjunction with
the owner, gave us a plan to work to.
Unfortunately, we were all
a little too enthusiastic & the unit was a little tall.
We fabricated a shorter oil
cooler, but made it wider so it would still dissipate the oil
temperature needed, as can be seen in the second pic.
Note the air deflector
channels on the inlet/outlet pipes. These really distribute the intake
charge nearly evenly through the core, making a big difference to the
efficiency rate of the core. The size, shape & angles are very
important, & that's all I'm saying!!
I know I'm harping, but we
do try real hard with every job & are really proud of our workmanship.
For it's size, this is the
most efficient intercooler we've made, flows gang busters & more
importantly, across most of the core.
Note the triangulation of
both the intercooler & radiator tanks, helps flow heaps.
Hang on Andrew
Unfortunately, in the
Queensland summer heat, our modular unit pulled enough heat out of the
intercooler, but not enough out of the Radiator for Andrews liking. This
was when he was stuck in traffic or working out at Queensland Raceway.
As you can see the radiator is absolute max & there was not enough room
for a larger fan, so the only answer was an auxiliary radiator.
We used the heater pipes to
rout the water through the radiator, so there is no need for an extra
pump. This knocked an average 7 deg. c out of the engine water
temperature. The reason for using the heater pipes is that the pump
sucks water from the engine outlet, which is the hottest water, cools it
before entering the engine again. It is far easier too cool 96 deg.
water than 74deg. water - if this radiator pulled water from the