Oops, I already emailed Brise on Sunday saying I could find an original to use as a pattern. Luckily they have not answered yet!
The original S sets the carburettors higher and the left one (Cyl 1 & 2) is moved closer to the other one. It also moves the thermostat housing further back and to the right.
Now I need to find one...
Cheers,
JL.
Anyone wanting a replica of the Prep 142/S inlet manifold has no need to try.
I already have a few new inlet manifolds for two twin 40 side-draught carburettors, Dell'Orto would be the best for a road car, but Weber second, and Solex probably last choice unless you are after originality - but then the manifolds I can supply are not original anyway. They are cheaper as they are not cast alloy but made from flanges machined and then alloy tubes welded across for the passages. However, they also incorporate the extension coolant housing which you need, like the original, and all for a lower price than those sold previously. (see photos)
This car was a only being set up last week-end and isn't complete yet, but you can see we are using 15mm trumpets on the inlet side, and hopefully there will be an air box eventually to take the air intake lower so it is cool and not from the very top which is much too hot.
If you look at the first photo showing the extension jacket, you can also see the 'S' dipstick tube which is different to the standard 2.2 tube, and you either need that or modify the original. Depending on where you got the twin side-draught carbs. they may also need new throttle brackets to join the two as the carbs. are closer together compared to say those on a Lotus or Jensen and their linkage will be too wide.
Underneath there also needs to be a different throttle cable bracket, so making your own proper twin side-draught carb. setup is not so straight forward as you might think. I only have a few inlet manifolds at the moment although we can probably get more made if there was a demand. I don't have the other parts!
Contact me if you are interested and want to know more. (
roy@matraclub.org.uk)
As for the coolant header tank float level, that is an easy modification which is described in my technical article on the cooling system and suggested mods. that you can download from my website. I have it on my car and it works well.
Roy
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