Contour Enthusiasts Group Archives Forums Modifications Forced Induction 3L turbo project...Pictures! Dial up warn.

I have the SF kit and it sits on top of the trans like warmonger's his was the first set of pipes ever made, IIRC.

I should have pics up soon. The guys that took them are hopeless though so don't hold your breath!

Power won't be compromised too much by the distance the turbo is mounted, but spool time can be affected because the exhaust temp is lower by the time it hits the turbo. However, spool-up on the SF kit is so fast with the T-28 that it isn't an issue. The turbo might run cooler than the ones right off the manifolds, so that could be a blessing for the intake temperatures. Power seems to be good as the approximate position of the SF kit is roughly the same place as mine.

Tom

Tom,
Not sure how to say this. But I just now saw this post and pics of your car. And it is almost exactly what I plan to do to mine and look like. So as you an imagine. I really really like your ride.

I wanna be like you when I grow up...

Compressing the air is only one source of intake charge heat.
Do you think heat conduction from the exhuast housing running 1000 C isn't going to conduct through the all metal housing to the ~80-100 C aluminum compressor housing? What about the turbine shaft? Those are two prime areas for extra heat to enter the intake charge through convection and conduction. Then there is friction added to the air from the compressor wheel which results from vigorously circulating the air.
Underhood temperatures are going to raise anyway since the turbo is under the hood. My statement that it may not heat the intake charge as much results from the logic that the exhaust has more time to cool down before it gets to the turbo so the turbine and housing will be cooler. Therefore the temperature difference between the exhaust and intake will be lower and the rate of heat transfer should be lower.

warmonger

Well, I'm finallly going to give an update and some new pictures. I have the pipe fabrication complete now except for a mounting tab on the down-pipe. I am going to have it bolt onto the rear motor mount so the piping is solidly connected to the engine.

The pictures I have show how the main header piping is routed, the turbo, the down-pipe and the wastegate. I put all the pieces together to show how they assemble.
The next step will be bolting them in. I am not thrilled about that because some of the nuts are in such tight positions that I will be wrenching for an hour on just one of them I'm sure.
After installing this piping all that remains is the intake side and of course all the little extras like hoses and stuff. Don't talk too much smack about the welding since I did it all myself and I'm getting better. Some of the welds are nice and some are ugly but all the joints are good on the inside of the pipes so no sweat. They're all covered with header wrap now anyway (not shown in the pictures) so anyone looking at the piping wont see them anyway.
If you are familiar with the underside of the car you can tell from the pics that I ran my exhaust under the drivers side of the trans and I shaped it to follow the contours of the subframe and trans. As soon as it clears the trans there is a 3-bolt flange that connects it to a flex-pipe, which in turn goes into the main cat and another 3-bolt flange, and then on to the rest of the exhaust. This was done for easy serviceability. It's taken me a month, but I have only been able to work on it 4-6 hours a week on saturdays becuase of my job and the hours that the shop is open. Hopefully I'll drive it home next weekend where I can finish the intake at my leisure.
Well, what do you think?

warmonger

That looks really good....looks really clean and well done! What's the dia. of your D/P?