Turbo GT

[californiagting]

After 3 years I have finally got my fuel injected inter cooled turbo on the road. Those who said there is not enough room under the GT hood are wrong. Of course you have to be willing to design and fabricate your own manifolds. The turbo is out of a Saab as is the inter cooler. The EFI is sold by Weber Red Line.
Roger Wilson built the motor with a 1/2 inch stroke, Venollia pistons, and Crower long rods. He also used his ported and polished big valve head with Isky cam and roller rockers fixed by GTJIM. What started out as a cheep junkyard turbo project snowballed into a no budget marathon. I have CAD files on the manifolds if anyone is interested.

[Mike Preble]

WOW!!! Drool!!!

Mike

P.S. Welcome to the site.

[opelwasp]

So I take it this is not a cold weather car, I don't see a heater. What is the turbo lag like? What was the estimated cost? The CAD files would be great to see.

If you have the time, a write up with play by play pictures would be great.

[rrossjr]

Originally Posted by californiagting After 3 years I have finally got my fuel injected inter cooled turbo on the road...

WOW is right. Nicely done! I've see other turbos on 1.9s (I actually owned one for a while) but mostly on carbs. What kind of boost are you seeing with the Saab setup?
Ron in Indy

[californiagting]

You are right the heater is not hooked up. In Southern California the only problem you have with an old Opel is that the car is too hot inside. I put double 1/4 inch foam with foil backing just to lower the heat inside the car. I also built heat shields for both the exhaust manifold and the intake because a turbo makes so much heat. The heater is still there if I want it but I want to air condition the car before I heat it. The temperature a home today is 68 F.
The waste gate is set for 6 lbs. right now but I hope to raise it to 10 lbs.

[jeff denton]

More like a Double Wow, I think.
Nice work!
Hey, no fair, how come I didn't get a "Power by Roger Wilson" sticker?
That's gotta be a collector's item now, ya know.

[RallyBob]

Glad you got it running and shared some photos. Roger had spoken to me for a long time about this project and I was hoping to see it some day!

Bob

[californiagting]

The Saab turbo is a Garret t-25 model. It is designed for street cars not drag cars. The boost is maxed out at 6 lbs. at 1500 RPM. Needless to say there is NO turbo lag. I told Roger I wanted a torque monster so thats what I got. It pulls like crazy from 2000 to 5300 RPM after that the turbo restricts air and the engine goes flat. I put the sticker on the valve cover because this is supposed to be Roger's last motor for anyone other than himself.

[azopelnut]

Congrats Ralph

[jeffnomad]

Hey how many horses are pushin out that thing?

[lezliewk]

I have to agree with above.WOW.That looks great

[garrymc]

What are you using for ignition? I dont' see a dizzy...

[californiagting]

Thanks for your comments. The Red Line ECU can use the stock Opel 2.4 crank pulley. It is completely programmable so you can advance or retard ignition by mapping RPM, Boost, throttle position, or air temp. I do not know what the horsepower is but I hope to dyno it soon. I have a picture of the exhaust with turbo. No cutting required but I did remove the air filter mount.

[wrench459]

Originally Posted by californiagting Thanks for your comments. The Red Line ECU can use the stock Opel 2.4 crank pulley. It is completely programmable so you can advance or retard ignition by mapping RPM, Boost, throttle position, or air temp. I do not know what the horsepower is but I hope to dyno it soon. I have a picture of the exhaust with turbo. No cutting required but I did remove the air filter mount.

Nice work very nice.
What if I can come close to the real numbers without the help of a dyno.
Humm might be a good test of the software.

[Gumby]

Originally Posted by californiagting I have CAD files on the manifolds if anyone is interested.

I am interested. Can you post them on the forums so everyone can access them?

[Koff]

I am also interested in the Cad files

[californiagting]

If you want to see what the manifold will look like just print out the drawing and tape it together. I made the manifold out of 3 X 2 x 1/8 wall tubing. I taped the pattern to the tubing and cut it out with a 4 1/2 inch angle grinder. Strictly low tech equipment. The flanges were cut on a laser cutter at a local sheet metal shop. A little bending and welding and half the turbo project is done.
I have changed the turbo to a ball bearing T-28. It is much larger but still fits. I had to lose the heat shield. Also I added a Saab waste gate controller so my computer can control the amount of boost before the waste gate opens. I now limit myself to 15 lbs.

[californiagting]

Now for the intake manifold. Again I recommend cutting and taping a print out first. The intake manifold is a lot more involved. I took my design to the laser cutter and he decided that he would cut it out of stainless steel. I can not weld stainless so he welded it for me. Only charged $100. The injector bungs I bought from simple digital. I used a throttle body from a Chevy. It uses a 2 bolt mount. If I did it again I would find a 4 bolt throttle body. I changed to a fuel rail system just to clean things up. The lines from the manifold are for the brake booster and assorted devices.