roy4matra
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Posts: 1224

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« on: June 18, 2025, 10:23:41 am » |
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Hello all, as you know the Murena 2.2 was originally fitted with the standard Tagora 2.2 engine with no performance modifications at all, and as such was not very powerful as a consequence. The main problem was a very mild camshaft profile, which was reasonable for a heavy 4 or 5 seater saloon car, but definitely not ideal for a light mid-engined sports car!
At that time Holbay were a well known excellent engine tuning company that tended to support Rootes (and later Chrysler Europe) cars and I'm sure most of us older owners remember the fast 998cc Imps and Rapier H120 (Holbay 120 horse power) fast Rootes road cars as well as in circuit racing it was often the Holbay tuned FF and F3 cars that were the best. So it was Holbay that produced a re-profiled fast road cam for the Type 180 engine that is in the Murena 2.2, and this gave it some much more suitable performance, without any other modifications necessary. This re-profile was called the Tornado or the 58C profile. Unfortunately as you know, Holbay no longer exist.
However, I have contacted Piper Cams who made the brand new 3777 high performance cams for a few of us a few years ago, to see if they would re-profile some standard cams at a much lower cost, with a similar fast road profile to those Tornado cams, and they are willing to do that.
So if any of you Murena 2.2 owners still have an original 2.2 Murena cam in good condition, and would like to increase your Murena's performance for less than half what it would cost to buy something like an 'S' cam, and also not requiring any other costly alterations, now is the time! If they do several cams at the same time they only have to set up their equipment once and so they can offer a slightly reduced cost. Obviously if the cam is still in the engine in the car, you will have to remove the cylinder head to remove the cam, and you will need to refurbish the rocker arm pads too, so there will be some additional costs, but the re-profiling will be in the region of £250 or less and therefore a lot lower than the normal cost of a better cam from the usual European Matra suppliers such as Politecnic, Carjoy, etc.
I currently have 4 standard cams which I will be taking when we are ready, so if anyone else wishes to join us, then let me know as soon as possible please.
Roy
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