metro turbo engine fitted with supercharger
Turbo Mini Forums

Today I bought a basket case with a 1275 engine in it after getting it home i check out the engine number and it showed that it was a turbo engine, so i took off the rocker box and checked the valves and found it is defiantly a turbo head so I can only assume that it is a turbo engine converted to NA. as I don't have the turbo, manifolds and other bits i was thinking of bolting on an m45 i have kicking around the workshop. can anyone tell me if they have done this? also is there any way I can check to see if the dizzy is for a turbo engine? and lastly what boost level to run at safely with a standard engine as I don't want to spend any real money on it as its only a temporary engine while I build up my 16v engine.

Stuart.

Even the Turbo compression of 9.4-1 will be to high for all but the lowest boost using an M45. You could take some material out the chambers to drop it to something more sensible. Also the Turbo dizzy will be nowhere near for your application unfortunately.

Phil.

WWW.TURBO-MINI.COM

Yeh, seems like a waste of time to me, you might be able to run it at something like 5psi with a NA style dizzy retarded quite a bit but i dont think it would work very well.

Depending on what's left of the turbo setup, it'd probably be easier to slap a turbo on.

In the 13's at last!.. Just

1994 Mini Mayfair, 1330, Mspd Ph2 cam, Benross turbo head, 9:1, GT1752, TT Intercooler, MegaJolt, BMW M3 leather seats.

As I said earlier this engine is only going to be in temporary so I don't want to waste time and money on it. As for the dizzy all I wanted to know is there a way of telling if it was for a turbo application or is it a dizzy for a N/A? Setting up the dizzy is not a problem on a supercharged engine for me. I'm curious to know why the downer on superchargers? I know they don't have the efficiency of the turbo but if you have a power figure in mind and you can achieve this with a mechanical blower why not as there will be no lag?

Nothing wrong with using a supercharger and if you've got a sensible power figure in mind, I'm sure it will work ok. The Turbo dizzy is identifiable by it's part number, which I can't remember off the top if my head.
The M45 is very inefficient compared to a decent turbo. Hence recommending a lower compression ratio for the supercharger over a turbo.

Phil.

WWW.TURBO-MINI.COM

I can see sorting the belt drive being more hassle than is worth it, but if its a chuck together afair... slap 2 headgaskets on there?

Ok, thank you all for your responses, I think I just need to do this and find out how well it works.

Stuart.

Read the turbo engine myths thread. The turbo engines were not that special. You'd be better sticking it on ebay where they go for decent money rather than trying to melt it with an SC.

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

www.twin-turbo.co.uk

we ran 2 he gaskets on johns engine with no problems ,until he hit 15 psi lol.

i would lock out the dizzy timing to be fixed ,eg take the springs off and weld the mechanism to its stop ,then try 20 to 25 degrees and see what doesnt knock ,


on 10 psi from the blower it should be a hoot .

i think at amd they were running those eatons up to 20 psi and making 240 odd bhp ,so they do work .

regards
robert.

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM

Thanks Robert you've been most helpful.

Stuart.