The M cars , (and derivatives)
The M series was produced between 1972 - 1979.
The M-series used a new chassis designed by Mike Bigland, the biggest differences compared to the old chassis where that both round and square steel tubing was used. The chassis was also from the beginning designed so that it should be possible to use different engines just by welding in the engine mountings but without making any other changes.
Common for the M-series cars is:
Three different engines where used in various states of tune, the cars where named after the engine used.
- Independant fully adjustable suspension front and rear using unequal length A-arms, this type of suspension is used on most racing cars for closed circuit racing. Unequal length A-arms suspension can be built so that camber changes are minimised thereby optimising road holding. Also the suspension on the M-series is fully adjustable, both on the front and rear it is possible to adjust camber and toe.
The biggest disadvantage with this type of suspension is that it takes up a lot of room and it is therefore not used on any normal cars, (The M-series cars have no rear seats as the rear suspension take up all room behind the front seats).
- GRP unstressed body, (doesn't rust but can crack). The body is fully separate from the chassis.
- Back bone frame type chassis made of round and square steel tubing
- 50/50 weight distribution
- Low weight and high power
- Cramped and noisy, (almost no insulation against road or engine noise)
- Almost no ventilation, (there are vents for letting air in but no vents for letting air out.
- No rear hatch, all luggage has to be handled through the doors and stored behind the seats.
- Brakes are from Triumph TR6, front brakes are discs 10.875" and rear brakes are drums 9" x 1.75". The brake system is only good enough if well looked after.
- The cooling system is marginal at best, have to be improved especially if the engine is tuned.
- 1600M, Ford Escort Mexico, (tuned Ford Kent crossflow four cylinder OHV engine, 85 BHP)
- 2500M, Triumph TR6, (straight six engine 106 BHP)
- 3000M, (Ford Essex V6 as used in Granada and Capri, 142 BHP)
- 3000M BV, (customer request only, tuned Ford Essex V6, ~170BHP)
- 3000M Turbo, (Turbo charged Ford Essex V6, 230 BHP)
In 1976 an open car was designed based on the ordinary M-series, with the same chassis and the same engines as 3000M and 3000M Turbo.
During a long time TVR had been criticised for bad access when storing luggage, as the M cars doesn't have a rear hatch all luggage has to be handled through the doors and lifted over the seats. 1977 came the Taimar that was a M type car but with opening hatchback, otherwise these cars are the same as the ordinary M.
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Created on ... december 12, 2000