Trunk Mount Intercooler
For information of the New Refrigerated Air/Water intercooler system, see the new RAWIC page.
Fourteen hundred miles of
testing the engine modifications showed a weakness in the intercooler. The
Greddy intercooler would “heat soak” after one or two runs at high
boost reducing the engines power. Jim looked into several different
solutions discussing this with many IMOC members. He had been fascinated
with the Japanese trunk mounted intercoolers (TMIC) seen in HyperRev, vol.
21. After discussing the engineering with Spearco, IMOC
members, and others he made a decision to start the TMIC winter (Dec. 99)
project. “The easiest way to get a project done is to start collecting
parts. Develop your plan and make it happen. This project has been a lot
of fun. I made templates for all the parts, bought the right tools, and
took my time. Having an excellent fabrication guy, Mark Stewart, really makes things go
smoothly. The results have been outstanding. The car will perform at max
power (limited to 20 PSI) with consistency.”
These photos show different views of the TMIC removed from the car. This unit uses three fans. The top fans are easy to see. The high performance SPAL fan on the bottom can be seen in one of the shots which looks inside the bottom scoop. The fans are switched through a relay and controlled individually with dash mounted switches.
It is designed to work with the Greddy PE muffler. The scoop fits between the "V" shaped muffler cans and exits out the metal grill between the exhaust tips.
On the bottom of the scoop is 2000 degree reflective material to help keep heat out of the intercooler.
The two 2.25" Ceramic coated IC pipes are also shown. There are two more Ceramic coated pipes (not shown) which connect the IC to the trunk wall .
The trunk wall has two custom built connectors installed on the engine side of the trunk firewall. These two sections were made to support the IC pipes when using connector hoses. They were made by taking two 5 inch sections of 2.25" mild steel tube (exhaust tubing). 4" sheet metal plates with 2.3" holes were made to slide half way down these pipe sections and spot welded in place. 2.3" holes were cut in the trunk wall at the proper places andthese were then pop riveted to the engine side of the trunk wall.