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| Performance Articles How to get more performance from your Opel. |
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#1 (permalink) |
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Opeler
Join Date: Nov 2004
Location: southern California
Posts: 18
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Unanswered: Turbo GT
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. |
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#3 (permalink) |
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Non Civilian
Join Date: Mar 2003
Location: Between Chico and Sac, CA
Posts: 1,591
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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.
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Arguing online is the same as racing in the Special Olympics; no matter who wins, you're both still retarded. |
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#5 (permalink) |
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Opeler
Join Date: Nov 2004
Location: southern California
Posts: 18
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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. |
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#6 (permalink) |
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former opel racer
Join Date: Nov 2002
Location: near some glaciers
Posts: 2,863
Real Name: Jeff "Oh-Oh" Denton
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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.
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No Opels were harmed in the filming of this movie. However two Mustangs, a Pinto, and a Capri were hospitalized. One Mustang was euthanized the next morning. |
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#7 (permalink) |
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Project 1450 supporter...
Join Date: Mar 2002
Location: Pleasant Valley, CT
Posts: 7,436
Real Name: Bob Legere
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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 |
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#8 (permalink) |
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Opeler
Join Date: Nov 2004
Location: southern California
Posts: 18
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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.
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#9 (permalink) |
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Member
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Congrats Ralph
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Paul "azopelnut" Heebink 1956 Studebaker Power Hawk 259 V8 1970 GT 12A-Rotary 5-speed 1972 GT 2.0, 5-speed 1973 (2) GTs, both 1.9 4-speed 1973 Ascona 4-door 1.9 4-speed A/C 1974 Manta, 1.9 Auto A/C 1975 Sportwagon 1.9 FI 4-speed A/C 1975 Fiat X19 |
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#13 (permalink) |
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Opeler
Join Date: Nov 2004
Location: southern California
Posts: 18
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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.
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#14 (permalink) | |
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1000 Post Club
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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. Last edited by wrench459; 05-16-2008 at 11:58 PM. |
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#17 (permalink) |
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Opeler
Join Date: Nov 2004
Location: southern California
Posts: 18
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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. Last edited by californiagting; 08-07-2008 at 02:47 PM. |
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#18 (permalink) |
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Opeler
Join Date: Nov 2004
Location: southern California
Posts: 18
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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.
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