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Yella Fella · 24th July 2012, 19:25

Not related to remapping as such, but worth reading about the 1.8 Turbo.

From MG Rover Product Communications Manager. Interesting reading.

Release immediate
October 3, 2002

MG’S SPORTING TAX-BEATER

MG is today (October 3) launching a new 160Ps high-efficiency turbocharged K Series engine to power the MG ZT saloon and ZT-T estate 160 derivatives. The turbocharged and intercooled 1.8-litre K Series engine answers the UK’s demand for a CO2 tax-beating car with a sports appearance and excellent chassis characteristics.

The 1.8T engine replaces the former 160Ps 2.5-litre V6 engine of the ZT 160 and ZT-T 160 models, yet despite offering the same power, provides even greater all-round performance with significantly reduced fuel consumption and a crucially better CO2 rating.

The new 1.8-litre turbocharged versions of the ZT range expands the appeal in both company car and retail sectors, with a CO2 rating of 194 g/km and a Euro III standard combined fuel economy figure of 34.9mpg. These figures compare with 225 g/km and 30.0mpg for the previous 160Ps V6 model. The high efficiency turbo unit delivers worthwhile gains in performance, reducing the 0-60mph time from 8.8secs to 8.5secs, and the fifth gear 50-70mph time from 10.7secs to 9.8secs (similar improvements also apply to the comparable ZT-T estate car versions).

Because the turbo unit has been specifically developed for high torque in the key driving range, with 215Nm available all the way from a mere 2100rpm to over 4500rpm, it has a strong and tireless character, to be enjoyed either on the longest journey or the shortest sprint.

The gearing of the new ZT turbo models has been carefully optimised to combine performance and economy. A final drive ratio of 4.167:1 provides overall gearing of 22.2 mph/1000 rpm in fifth gear, which places it between the gearing of the former ZT160 (23.4mph/1000rpm) and that of the continuing ZT190 (21.0mph/1000rpm).

Many drivers will also enjoy the enhanced responsiveness and agility that the 50 kg lighter power unit adds to the already sporting ZT chassis.

New Generation Turbocharger

The new turbocharged MG ZT models use the latest Garrett GT20 turbocharger with T100 turbine wheel design. This new-generation unit moves away from traditional turbocharger configurations, which until now have been predominantly designed for diesel applications. The T100 is a dedicated petrol engine concept, shaped to work more effectively over the greater speed range of modern petrol engines such as the K Series. In order to retain good off-boost efficiency, a balanced combination of moderate boost pressures and a relatively high compression ratio is used.

The unit incorporates a special cast stainless steel exhaust manifold able to withstand temperatures of around 1000°C, with specially developed pistons and connecting rods, and an uprated oil pump.

Available in showrooms from early October, the new 1.8T models will carry on-the-road pricing from £18,970 for the ZT 160 saloon and £19,580 for the ZT+ 160. The ZT-T 160 estate starts at £19,935 and rises to £20,545 for the ZT-T+ 160.

For further information please contact:

Greg Allport, General Manager PR and Events

24th July 2012, 19:25	#19
Yella Fella Nemo Me Impune Lacessit None at the moment Join Date: Nov 2007 Location: Glasgow's HMP Barlinnie, 'A' Hall, 2nd Flat Posts: 5,192 Thanks: 493 Thanked 1,094 Times in 666 Posts	Not related to remapping as such, but worth reading about the 1.8 Turbo. From MG Rover Product Communications Manager. Interesting reading. Release immediate October 3, 2002 MG’S SPORTING TAX-BEATER MG is today (October 3) launching a new 160Ps high-efficiency turbocharged K Series engine to power the MG ZT saloon and ZT-T estate 160 derivatives. The turbocharged and intercooled 1.8-litre K Series engine answers the UK’s demand for a CO2 tax-beating car with a sports appearance and excellent chassis characteristics. The 1.8T engine replaces the former 160Ps 2.5-litre V6 engine of the ZT 160 and ZT-T 160 models, yet despite offering the same power, provides even greater all-round performance with significantly reduced fuel consumption and a crucially better CO2 rating. The new 1.8-litre turbocharged versions of the ZT range expands the appeal in both company car and retail sectors, with a CO2 rating of 194 g/km and a Euro III standard combined fuel economy figure of 34.9mpg. These figures compare with 225 g/km and 30.0mpg for the previous 160Ps V6 model. The high efficiency turbo unit delivers worthwhile gains in performance, reducing the 0-60mph time from 8.8secs to 8.5secs, and the fifth gear 50-70mph time from 10.7secs to 9.8secs (similar improvements also apply to the comparable ZT-T estate car versions). Because the turbo unit has been specifically developed for high torque in the key driving range, with 215Nm available all the way from a mere 2100rpm to over 4500rpm, it has a strong and tireless character, to be enjoyed either on the longest journey or the shortest sprint. The gearing of the new ZT turbo models has been carefully optimised to combine performance and economy. A final drive ratio of 4.167:1 provides overall gearing of 22.2 mph/1000 rpm in fifth gear, which places it between the gearing of the former ZT160 (23.4mph/1000rpm) and that of the continuing ZT190 (21.0mph/1000rpm). Many drivers will also enjoy the enhanced responsiveness and agility that the 50 kg lighter power unit adds to the already sporting ZT chassis. New Generation Turbocharger The new turbocharged MG ZT models use the latest Garrett GT20 turbocharger with T100 turbine wheel design. This new-generation unit moves away from traditional turbocharger configurations, which until now have been predominantly designed for diesel applications. The T100 is a dedicated petrol engine concept, shaped to work more effectively over the greater speed range of modern petrol engines such as the K Series. In order to retain good off-boost efficiency, a balanced combination of moderate boost pressures and a relatively high compression ratio is used. The unit incorporates a special cast stainless steel exhaust manifold able to withstand temperatures of around 1000°C, with specially developed pistons and connecting rods, and an uprated oil pump. Available in showrooms from early October, the new 1.8T models will carry on-the-road pricing from £18,970 for the ZT 160 saloon and £19,580 for the ZT+ 160. The ZT-T 160 estate starts at £19,935 and rises to £20,545 for the ZT-T+ 160. For further information please contact: Greg Allport, General Manager PR and Events __________________ [SIGPIC][/SIGPIC]