My Original CT-26 Turbo - Performance Coated
Sold to "Cool Larry" Anderson :-)

The purpose of this page was to simply show the large amount of care I take when doing anything on the car. I passed along some of this passion along to Larry when he decided to purchase my original turbo. I replaced mine with the HKS Sport Turbo, so I was willing to help him do anything he wanted to with this project. This page shows the various components and treatments taken to optimize their thermal properties as well as make them virtually impervious to corrosion.
(Click any graphic for a much larger view)

Click to see CT-26 Compressor Housing - Large Here a picture of the Toyota CT-26 Turbo Compressor Housing. Since there are no true benefits to be gained thermally be coating this side of the turbo with a ceramic-based coating, I decided to have it bead blasted down to the beautiful raw aluminum color and then clear coated. This is the finished product...
This is the CT-26 Exhaust Housing which houses the integral wastegate assembly. It is made of a very heavy steel to be able to deal with all the heat which is shot through here at nearly sonic speeds. This is where 90% of the turbo's weight lies. This was coated with a ceramic gray satin turbo header coating. It can withstand over 2000oF and will lower underhood temperatures noticeably. Click to see CT-26 Exhaust Housing - Large
Click to see CT-26 Wastegate Actuator - Large This is the wastegate actuator of the turbo. It opens the wastegate flap (which can be seen in the previous picture) whenever a vaccum is sensed by the connection to the throttle body. The wastegate's function is to reroute exhaust gases around the turbo to prevent them from being used to create boost. If the wastegate is improperly sized for this task, it can lead to something known as boost creep, which is common in Diamond Star Motor cars once a downpipe is installed. Boost creep does exactly what it sounds like. Since the wastegate setup cannot get rid of enough exhaust gas, the boost will creep up and can cause dangerously high levels of boost and possible detonation. In a DSM, this can usually be rectified by using a dump tube. The Supras have never had such a problem. This was coated with the same coating as the exhaust housing to keep heat out of it and increase it's durability. It's an example of my constant quest towards perfection :-).
Here's a quick shot of the coolant pipe which supplies the turbo's watercooled housing with coolant straight off the main water pump housing. This was ceramic coated as well to keep the heat absorption rate from the nearby exhaust manifold at low levels. Click to see CT-26 Coolant Pipe - Large
Click to see CT-26 Components - Large This final picture shows just about all the components included in the turbo setup. The only thing not shown is the oil return pipe. Going clockwise from the top left we have the exhaust housing and wastegate actuator; the compressor housing; the elbow pipe (which holds the O2 sensor); various brackets, seals, nuts and bolts (all of which were coated too :-); the CT-26 impeller cartridge, and the coolant pipe.

Larry plans on putting in a new cartridge into this housing to alter the turbo characteristics in a hope to gain more overall flow. Another option would be to use a modified CT-26 wheel as well as possibly clipping the impellers. Clipping gains you a slight increase in low-end response, but at the expense of losing top-end flow. But it's all in his hands now. I wish him luck...


Created: 12/13/97 by C. Jensen
Last Updated: 12/13/97

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