1974 A Series Opel Manta Blog

The Opel Project blog has been setup to record the rebuild of my 1974 A Series Opel Manta.
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1974 A Series Opel Manta Blog
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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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Opel manta A series parts from edelschmiede
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It’s too easy to spend money at edelschmiede

A massive thank you to Thomas at Edelschmiede for locating me a very had to find oil pressure adaptor for the Manta A. I had been searching for ages for one of these and he found a brand new one 🙂               and while is was arranging with Thomas the delivery i had a quick look on his site http://www.edelschmiede.com/shop/ just in case there was anything i needed. What am i talking about, just in case!! £100 later and i had lots of new parts on my list for Thomas to send as well. If…

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OUR NEW HOME

So after a little vacation for the Opel its now back but in our new home. A better garage and a nice flat drive. So it will soon be time to get back working on the Opel. Im planning on having her ready for a proper tune-up in the spring, lets see how we get on 🙂

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Hydraulic clutch fitting on the Opel manta A series

I have always hated the clutch cable crossing over the engine on the a series and wanted to get rid of it and fit a hydraulic clutch, but have found it hard to find any info on someone fitting one. So i did a google and looked at other cars using the wilwood pull cylinder to get some ideas. I decided on an external slave cylinder as its such a pain to drop the 5 speed gearbox on the A if i did have issues. So a plan was hatched. i decided a bracked that bolted to the engine and…

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