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Showcase cover image for DO'Brien's 1974 Opel Manta

General Information

Year
- 1974
Make
- Opel
Model
- Manta
Color
- White
Packages
- Rallye
History
- It is a mostly original white 1974 Manta Rallye with a 3 speed automatic. It has had one respray in its original color. It has only ~55,000 miles on it, but compression was at 110, 110, 85, 110, so I pulled the engine and had it completely rebuilt by Bell and Gaines in Modesto, CA. It was bored out to 2 liters, and it has a high compression 1969 head, high compression pistons, new OGTS Shorty header, new Weber carb, etc., etc.,etc. - everything that can be replaced is brand new. That was expensive... Other than the wheels and the broken aftermarket radio and speakers, everything else is original - the whole interior (seats and headliner will soon be redone), sunroof, and it even has the original, albeit somewhat crusty, rubber trunk liner.
It has very little bondo from what I can tell (tiny bit where I think it was dented in the front left fender), and the only trace of rust is in the battery tray, which has been dealt with.

I bought this car as my first project in August/September when I was 17. I had dreamed of owning an Opel ever since I learned about them as a kid.
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I wanted to see what it would look like without the air dam:
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The engine bay is getting a buffing and deep cleaning before the "new" engine is going back in:
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All original red interior, sunroof, white headliner: (Seat covers and headliner will soon be replaced after the car is driving)
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Modifications

Drivetrain
- "Brand new" 2.0 liter, high compression head, high compression pistons, everything that can replaced is brand new.
The engine is still currently out

3 speed automatic transmission
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Interior
- All original, minus the radio + speakers

-Sunroof
-Red seats + door cards
-White headliner
-Rallye Gauges

The seats and headliner will be redone sometime after I get the car driving
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Exterior
- Front Air Dam
It was already on when I got the car, and I am planning on repainting it so it's actually the same color as the car :)

I'm still considering putting the correct Rallye side stripes back on

I ordered a custom black and yellow CA plate. Shouldn't be too much longer before I can pick it up (although you never know with the DMV). It has a very special meaning to me, and is a tribute to my grandfather who never got to see the car.
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Audio
- Random aftermarket radio and custom speakers behind the back seat/under the rear window that don't work. The wiring is butchered. It shouldn't be too hard to fix, though it is not a priority until the car is driving.
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Exhaust
- OGTS Shorty Header, stock exhaust, original Rallye twin pipe
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Wheel and Tire
- 13" Panasports

Comments

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48 Posts
Very nice car!
Thank you! I definitely got lucky finding it. I can tell it was extremely well taken care of for most of its life, at least up until the last owner or two got to it and destroyed the engine ? I'll be posting pictures of the "brand new" 2 liter soon, and the Manta will be back on the road in no time :)
 

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1,021 Posts
Yes It looks nice ,,,good luck w/the rebuild..My brother Doug and I brought Mark Paar's 75 FI Manta to AZ and show it regularly. It gets positive feedback. Our 1.9 also has low compression of 100 on all cylinders. I have purchased one of Charles Goin's 2.6 engines that he expects to be ready in 6 months. That should make it run as good as it looks. Are you going to the Manta 50th in Calif. at the end of April?
 

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Registered
Joined
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48 Posts
Yes It looks nice ,,,good luck w/the rebuild..My brother Doug and I brought Mark Paar's 75 FI Manta to AZ and show it regularly. It gets positive feedback. Our 1.9 also has low compression of 100 on all cylinders. I have purchased one of Charles Goin's 2.6 engines that he expects to be ready in 6 months. That should make it run as good as it looks. Are you going to the Manta 50th in Calif. at the end of April?
I am 100% making it to the 50th Anniversary trip! I'm beyond excited for that :) The engine is being built by Bell and Gaines in Modesto, which was recommended by Gil at OGTS. They just ran it yesterday and wow, it sounds amazing... They're now converting it to electronic ignition and I'll try to pick it up soon. I bet that 2.6 is going to be awesome! Sounds like that car will be fast
 
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