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
OPEL

1974 A Series Opel MantaFeatured

My 1974 A Series Opel Manta. Its been a long project and it still has a way to go before it looks like it use to back in the day. Now running a 2.0l+ CIH engine on full Webber Alpha engine management. Everything is custom made or adapted, from the full 2.5″ stainless steel exhaust, Wilwood racing calipers, Cosworth rear calipers, Hydraulic clutch, Chevey S10 clutch kit and lots more.. Read on for full details of the rebuild and hopefull one day pictures of her out on the road!

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Cobra Le Mans Reclining Sport Seat fitted to Opel manta A Series
Interior

OOH, New Seats!

Although the Cobra Dayton seats were super comfortable and did everything I needed, I decided it was time for a change and something a little different, so I want for something a little bit more old school! Sticking with Cobra’s I went with the Cobra Le Mans Reclining Sport Seat. These again are super comfortable but a bit slimmer, they don’t have the harness slots but have headrests so I can slide the belts through these and keep the same sort of feel it just looks a bit more old school ford now 🙂 Being a slimmer seat it gives…

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Interior

Getting ready for the new seats!!

The new seats arrived yesterday, so it was time to give the interior a little bit of love before I put the seats in. So I totally stripped the interior and gave it a good clean and hover and then started adding everything back in, nice new mats fitted as well!. Tomorrow its time to fit the rearview mirror, door handles, chrome trim around the inside lock and then the new seats and back in with the seatbelts. That will be the interior all finished! After that its paint!!

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Interior, Lights

Some goodies from Opel GT Source!

Now we are all up and running with the Opel its time to finish the interior off and then start to work on the body. I did the interior a long time ago so it does not need too much doing but I did find some nice new parts on the Opel GT Source site that I just had to have! New door handles and a nice new rearview mirror arrived last week along with some NEW rear split lenses that they have started to have remanufactured! so these will go perfectly with the new set of inner lights that…

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CIH Engine

First Oil & Filter Change

So it was time for the first Oil & Filter change today – 58043 miles on the clock (I don’t think that is the original mileage 🙂 Filled her up with Vavoline VR1 20w – 50 oil and some of the COMP CAMS Break-in additive as recommended by the engine builder. Now we can have a bit of full power mode to see how she goes and then hopefully later in the year if we don’t enter another lockdown i might be able to get up to Northampton Motorsport for a final full power run and tune-up, fingers crossed!!

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CIH Engine

All run in, time for an oil change!!

I have been running about in the Opel these last few months on any trip I can (to get the shopping, click and collect etc..) to get enough miles on her so everything is all run in and now I can change the break-in oil for some proper stuff. I’m going with the Valvoline VR1 Racing 20W-50 and some zinc additive to protect the cam. I will also be giving everything a check over just to check nothing has worked loose or moved while I have been running about.

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Suspension

Suspension update

I fitted Knoi adjustable shock to the car but can’t remember how long they have been on there so it was time to fit some new ones. I managed to find them on Amazon and the rear ones were in stock so i bought a pair of those and the fronts are on back order so I’m waiting for these to become available. I fitted the rears today and I’m leaving them as the default setting to see how the ride is and then i will adjust from there if needed as I’m not sure what the current ones are…

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CIH Engine

Fitting Mesh Filters to Alpha Throttle Body Poly Trumpets

Thought i would post this in case anyone else is looking for a way to fit Fitting Mesh Filters to Alpha Throttle Bodies that have the Poly Trumpets when there is not enough to fit a full filter box. I have the Alpha throttle bodies with the poly trumpets                 and don’t have the space to fit a full box air filter and i have been scratching my head as to how to fit some mesh filters and came up with this cunning plan 🙂 I bought some Webcon Mesh Filters to suit…

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engine bay

Lockdown 3 – Snagging list

As i have a bit of time on my hands and it looks like Boris will be giving me until at least March off! I thought it was a good time to work through me snagging list! So i will update this post as i work through them. JOB 1 As it was a nice sunny dry day today and i didn’t have much else on i decided to fit the spare heater box. I had already cleaned it up ready to go and was just waiting for a bit of decent weather. The box is now all fitted and…

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1974 Modified Opel Manta A Series
OPEL

We’re back on the road!!

Finally, after a long few months of getting the exhaust all sorted out, we are finally on the road. It was a beautiful sunny morning on the south coast, so it was time for a few last tweaks and checks and then it was time to head of for a shakedown. Everything ran fine, the temp was good, oil pressure reading ok and the steering was fine, the exhaust didn’t seem to knock, so all good :-). The brakes need a bit of bedding in and adjusting but that was expected. Time to check over and tighten up anything that…

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