1974 A Series Opel Manta Blog

The Opel Project blog has been setup to record the rebuild of my 1974 A Series Opel Manta.
OPEL
1974 A Series Opel Manta Blog
Brakes, Interior

FOOT DOWN, LETS GO!

Now the winter has finally passed and the nights are longer is full speed and back on the project again 🙂 While i wait for the crank to come back i have a few other things to keep me busy! Today i had a full day on the Opel and as the weather was nice and dry i managed to get quite a lot done. When i removed the engine and box to give that the check over i noticed that the torque tube doughnut looked like it had a crack, and on further investigation noticed it was totally shot! so…

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OPEL

Spring Time = Opel Time

So now the bad weather is out of the way and its getting warmer its time to get moving on the car again. I have a new plan of attack to try and get her finished this year! The crank is at the engine shop and needs a slight grind which i think was down to the problems starting her up and getting the oil pumping as a few of the bearing did have wear that looked like they had been short of oil. So hopefully in a couple of weeks, the crank will be back and i can get…

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OPEL

1974 A Series Opel MantaFeatured

My 1974 A Series Opel Manta. It’s been a long project and there are still a few little modifications I want to do in the future,. Now running a 2.0l+ CIH engine on full OMEX 600 engine management with Webcon throttle bodies. Everything is custom-made or adapted, from the full 2.5″ stainless steel exhaust, Wilwood racing callipers, Cosworth rear callipers, Hydraulic clutch, Chevy S10 clutch kit and lots more.. Read on for full details of the rebuild and hopefully one-day pictures of her out on the road in Germany!

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Clutch

Hydraulic clutch

So lots to do and this weekend its time to get started again. So along with a clean up of bits im looking to get the hydraulic clutch started. I have it setup as a little mock up and need to secure a few bits and get testing.

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CIH Engine

Engine out

Ok, it’s been a while since i posted and also since i did much to the old A series! Life kind of gets in the way far too often!! So as i decided to fit the S10 clutch and new flywheel i decided it was time to fix a couple of bits i was not happy about and as i like to do things big style! it was engine and box out. So i now have the box and engine completely out, the front suspension and part of the exhaust. So things to fix: Manifold – drill out holes as they…

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CIH Engine

Opel Manta running full Webcon Alpha system

Just a quick little pic of the engine before it drop it and the box out to add the new S10 clutch and flywheel and to sort out a few little bits and get the hydraulic clutch setup, then its back in and time to run her up and see what to do about tuning her up properly.

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Wilwood 4 pot calipers fitted to Opel Manta A Series
Brakes

Finishing the brakes

So i now have all the parts needed to finish off the front brakes. Got the last couple of goodridge fittings needed to connect to the Wilwood callipers and got a couple of spacers to space the calliper out the 3mm to get it centrally aligned with the disc. This was a better option as the other one was to have 3mm machined off of the custom adaptors. So a quick test fit tonight and then all i need to do is get some thread lock and cut the brake hose to length and fit it all up. A little job for…

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Opel Manta A series Chevy S10 clutch and flywheel kit
Clutch

An early Christmas prezzie

So a little early Christmas prezzie for me and the last set of bits i need to complete the A series. So after Christmas its time to get back on the build. A big thanks to Nick in the Opel club for bringing the parts over and to Gil at Opel GT Source for sorting out the delivery. So i now have a chevy S10 clutch kit and matched Monza flywheel for the A all the way from Opel GT Source. This will handle all the power from the engine no problem as the clutch cover is a 6 bolt…

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