These are the 2 matching Garret turbo's I bought in early July 2003. These units came from a 5 speed 1988 Thunder bird turbo coupe. These are Garret t-3's .63(turbine,hot) / .60(compressor, cool). I do not feel that my goal of surpassing 480 hp / 520 ft/lb tq will to be hard to attain with a 5-liter motor.
The a/r for these units are as follows: .63(turbine)/.60(compressor). These were perfect. I was going to use .48 turbine's from the ford T-bird's for a faster spool, (~2400 rpm) but then they would be wound out by 5300 rpm or so. The other .63 turbine would spool higher, but would pull to 6000 rpm. I wanted to be able to bring the car into boost around town, at normal speeds, but I did not want it to run out of steam by 5200 rpm. Only the 5 speed cars had the .63 a/r turbine housing, meanwhile the automatics had a .48 a/r housing.
These are the pipes that will be used to connect the turbo's. The outside pipes are for the exhaust. They bolt right over the waste gates. The smaller inside black pipes are for the intake of the compressor and the longer pipes are to link the compressor to the intercooler. I will only be using the ends to bolt up and will be welding all custom fabricated pipes. The exhaust is going to be 3" in diameter and the compressor pipes will be 2.25" leading to the intercooler.
Next will be the Intercooler. I will be using 2 intercooler cores from a 1988 Turbo Coupe. These will be cut apart and welded back together using custom end tanks. These new tanks will be on the top and bottom. The air will flow from top to bottom. It will be 22" wide 12" tall and 3.75" thick with the endtanks. The top will have 2 inlets measuring 2.25" wide with one 3" outlet to the throttle body.
This one of the Turbo Coupe intercooler cores with the endtanks cut off. I used this intercooler because the tubes will run up and down and are very short, 6 inches. Since most of the heat is disapated in the first few inches of the tubes it is better to have an intercooler with more short tubes than fewer longer ones...
These are the heads that will be on the car. They are Trick Flow Twisted Wedge aluminum heads with the 2.02" int valve and 1.60 exhaust valves, 61cc chambers 170cc runners. This will help out with the thermodynamic balance while under boost. I am going to run the thickest head gaskets availible to try and drop my compression to as low as I can get it with stock pistons. Hopefully around 8.8:1, but I think it may only get as low as 9:1. I will post when I find out...
These heads will outflow the stock E7 heads by a long shot. Especially while under 11 to 13 lbs of boost.
This is what the finished product will look like without the car. I found this picture, and I think it shows pretty well how everything fits together.