Group A Metro Turbo
Turbo Mini Forums

I want to find out more about these engines - the head gaskets can be purchased anywhere - but i wanted to know more about the cars - especially all aspects of the engine and ancilaries

There is lots of different opinions on what these engines actually where. Some say they had hybrid turbos, some say not. I know they had undercrown cooling, as I have seen one of there blocks. This alone makes me think that there were running pretty hight boost (around 20psi???)

I know the gear set was different too, they had a much longer 1st and 2nd gear due to the fact they had rolling starts. They also had some kind of baffaling in the gearbox casing. Seen no photo's of these, but know someone who use to have a pair.

Any one else know any facts on these?

Team Racing

Now this has bugged me for years... What is a hybrid turbo??

I take it group A metro turbs are not raced anymore?

my understanding of a hybrid is that it is stronger than a standard turbo, they use different turbine wheels dont they?? and i think they have 360degree bearings and can handle higher boost pressures, im sure someone will correct me lol

A-series power! 1972|1310|T3 turbo|Omega pistons|Cantre main strap|Orange clutch diaphragm|AP race plate|Comp pressure plate|Lightened steel flywheel|13-row oil cooler|Vernier duplex timing gear|Phase 2 Piper cam|Green air filter|Hi boost carb needle/spring|2"Stainless exhaust|3"Play mini stainless rear box|Jack Knight s/c 4spd gearbox|Jack Knight s/c drop gears|Silicon coolant hoses|Lumenition HT leads|GAZ lowered height shocks all round|Steel flip-front|Rear safety devices cage|Group 5 arches|6x12 deep dish Minilites|Surf blue/Old english white|

generally speaking its the internals from a bigger turbo in the casing of the smaller turbo.. so it can flow higher powers but have less lag.

I was told by a reliable source that they used a standard T3, apart from a 360 thrust bearing. This was from an ex Howley employee who actually built and raced the engines.
They did indeed have undercrown cooling, forged pistons, billet centre main strap, forged rods, crank etc etc
As you can imagine when these engines were pushing out close to 220hp these where full race items !

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