The Beast


Trunk Mount Intercooler
(Note:  This IC has now been removed from the Beast and has been replaced by a refrigerated air/water intercooler.  The information has been left on the site to help those of you who need help in building this type of system.  The TMIC continues to be one of the best heat sinks around.  There is no doubt about it, the TMIC works very well.  My reasons for moving to a different system have more to do with R&D and  faster throttle response than any major shortcoming of the TMIC system.  The cost of a good TMIC is around $2200 if you do much of the install.  Good luck.)

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.”

Update: September, 2000
The original trunk mounted intercooler was modified to allow the use of a Greddy PE exhaust system.  The intercooler was raised 2 inches and a custom heat shield and hot air exhaust duct was constructed from aluminum sheet.  A double pusher fan unit was mounted on the top of the IC and a single SPAL puller was attached to the bottom.  This pulls air from the top scoop down through the IC and delivers it out the bottom.  2000 degree heat reflective material is used between the exhaust and the duct work. Separate fan switches operate the fans.

Intercooler 13" x 24" Spearco

ICScoopJimBest.jpg (52583 bytes)
Intercooler Duct and Heat Shield 

TrunkHole.jpg (75822 bytes)
Hole for trunk scoop

TrunkScoop2.jpg (70543 bytes)
Fitting the trunk scoop.
Scoop is a Subaru Impreza Outback part

Making the lower hole for the intercooler Making the lower hole for the intercooler  
Cutting out the trunk bottom. The first cut is always the hardest.
The air powered saw came from Lowe's Hardware ($99)

Making the lower hole for the intercooler
Fitting the intercooler (original photo)
Intercooler has recently been raised 2 inches to allow
room for heat shields and fans on bottom.

Intercooler hose flanges provide support to IC pipes and
a place to attach "bump" hoses

Fabrication/Mark Stewart

Fitting turbo IC pipe

Jim fitting parts at fabrication shop

ICHtShieldBst.jpg (43454 bytes)
The exhaust system, heat shield and
intercooler air exit

IC-WIBest.jpg (47932 bytes)
Intercooler installation (current) 

Trunk scoop mount

Engine compartment
Overall installation

JetHotICTubesBest.jpg (61433 bytes)
Jet Hot coated and polished intercooler pipes

Flanges used to go through the Fire wall


TMIC Photos

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.

      TMIC1.jpg (69167 bytes)TMIC2.jpg (66350 bytes)TMIC3.jpg (70279 bytes)

      TMIC4.jpg (67949 bytes)TMIC5.jpg (76231 bytes)TMIC6.jpg (78359 bytes)

      TMIC9.jpg (87063 bytes)TMIC10.jpg (81984 bytes)TMICPipesBest.jpg (79402 bytes)


Aquamist water injection system - August 2000

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Last revised October 22, 2002.