|
|
This shot shows the front of the car. You can see the modified front
valance allowing more air to the front mounted Starion intercooler. The
stock valance openings have been modified to allow as much fresh air to the
intercooler as possible. The new edges match the stock 510 front valance
outlines and have a stock appearing folded edge. To the right of the
intercooler is the opening for the fresh air intake. When the front bumper
is installed this hole almost disappears, but it still allows for cool,
fresh air to enter the intake.
|
|
|
A closer shot of the Starion intercooler. The Starion core measures
16x10x3 inches and is one of the largest OEM intercoolers that I have found.
The tubing feeding the intercooler is 2 1/4" 6061 aluminum with mandrel
bends. As you can see the valance needs to be painted, and the bodywork
finished. The inconsistent edge is an optical illusion; the red primer is
breaking through the stock paint.
|
|
|
This shot clearly shows the width of the Starion intercooler. The
intercooler sits behind the valance, and the radiator has been moved back
three inches from where it originally sat. We wanted to keep the intercooler
as low as possible so we would not block the radiator too much. With the
radiator moved back, the sides of the radiator box have two holes to allow
the intake and output tubes for the intercooler to enter and exit.
|
|
|
This shot shows the opening for the fresh air box. The box itself
measures approximately 7x7x8" and has a large K&N air filter installed in
it. The air filter is removable by removing the top of the box inside the
engine compartment. When the front bumper is installed just the lower 3/4"
is visible. The box is totally sealed except for the front opening (and a
few holes to allow any water to escape.) Once moving, the trapped air has
nowhere to go but into the intake. When the engine is running at WOT the
amount of airflow into this box is amazing. If you hold your hand near the
edge you can feel it being pulled into the air box. I held a piece of paper
near the edge while the car was running at it sucked it into the box. We
have decided to build a screen to prevent this from becoming a leaf trap!
|
|
|
The backside of the fresh air box. This is installed in the inner fender
and has just enough room to allow for tire clearance. The box is flush with
bottom of the valance. The shock reservoir has been relocated here to keep
it away from the heat of the turbo charger.
|
|
|
Overall shot of the turbo side of the engine compartment. The upper
intake tube dominates the engine compartment so I need to decide just how to
finish it. I am not sure if I should polish it, anodize it, or powder coat
it. Since we did use aluminum tubing everywhere possible, I don't want to
hide it under powder coating. The HKS sequential blow off valve is attached
to the intake pipe. In the lower left side of the photo you can see the
rubber elbow that attaches to the air flow meter and the housing for the
turbo itself. The headers are mild steel for now, we will replace them with
stainless later.
|
|
|
This shows what a tight fit everything is on the driver's side of the
engine compartment! You can see the upper intake tube, with the HKS SBOV,
and the header below it. The tube with the orange hoses is the one that
feeds the intercooler, and the silver one above it is the fresh air intake.
Below all that is the motor mount that has to snake its way through all that
tubing! Tight, tight, tight!
|
|
|
This shot shows the radiator box, electric fan, fresh air intake tubing,
and the modified upper radiator filler neck. As you can see, the radiator
has been moved back three inches from its former location. This allows the
plumbing for the intercooler to go around the wide Volkswagen VR-6 radiator.
The frame for the radiator box is just 3/8" tubing with aluminum sides. The
top cover (which has not been made yet) will be made from aluminum or
perhaps carbon fiber. It will be removable to allow the intercooler tubing
to be removed. The upper filler neck was turned so it faced 90°. This
allowed for a more conventional radiator hose. The lower radiator hose
(black) is a hard line to cross the alternator belt without fear of it rubbing.
|
|
|
The passenger side headers. Since we did not want to rebuild the
firewall, (the heater was already modified and worked great), we decided to
run the crossover pipe in front of the engine, right before the steering
rack. But that decision also created lots of work that had to be done so the
header pipe would clear all the other parts that need to share the engine
compartment. The alternator had to be moved up out of the way so the header
pipe could slide underneath. The header pipe is wrapped from the collector
all around to the other side to keep heat off of the alternator and
alternator belt as much as possible. We will probably build heat shields for
the alternator to extend its life as much as possible.
|