Is the only difference between the 180 and the 225, just tuning......
03-22-2005, 02:42 PM
#3
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to be specific...
http://www.audittcca.com/faq/1051394029
"The higher-output 165-kW (225-hp) engine uses a high compression ratio (8.9:1) for a turbocharged unit. The 1.8-L engine was extensively modified to attain the higher output reliably. The pistons, connecting rods, and big-end bearings were uprated to accommodate the higher combustion pressures. The double-mass flywheel and clutch were modified to match the greater performance. The intake manifold, turbocharger, and exhaust manifold are new.
A Type K04 turbocharger forces air into the combustion chamber via two charge-air intercoolers. Compared to the less powerful 132-kW unit, a modified airflow path, together with a larger air cleaner, ensures that the air reaching the engine has a temperature only about 30¡C higher than ambient. This 80% charge-air intercooler efficiency keeps the engine supplied with an optimum flow of oxygen-rich air. Maximum boost pressure at the intake manifold can reach 200 kPa (29 lb/in2).
The engine's torque curve is impressive, with 280 N*m (207 lb*ft) available from 2200 to 5500 rpm. With it, the TT can accelerate from 0 to 100 km/h (62 mi/h) in 6.4 s and has a top speed in the region of 243 km/h (150 mi/h). Flexibility is also impressive, needing only 11.2 s to accelerate from 60 to 120 km/h (37 to 75 mi/h) in fifth gear. The TT equipped with this engine and quattro all-wheel drive has a total fuel consumption of 9.2 L/100 km, according to the EU 93/116 test.
The "lower-output" 132-kW (180-bhp) engine still manages a specific output of 100 hp/L. It uses a relatively smaller KKK Type K03 turbocharger, its lower moment of inertia allowing the engine to respond more rapidly to accelerator pedal movements. Boost pressure builds more quickly for reduced "turbo lag." Torque at lower engine speeds is aided by optimized throttle-butterfly and boost-pressure settings. Audi says the turbocharger and five valves per cylinder layout work ideally together, since the potential of the turbocharger can be used to the fullest extent by the large total cross-sectional area of the valves in each cylinder.
An even higher compression ratio of 9.5:1 ensures high efficiency and low fuel consumption. According to the EU 93/116 standard, total fuel consumption for the front-wheel-drive version is 8.0 L/100 km. Torque of at least 235 N*m (173 lb*ft) is available from 1950 to 5000 rpm. Front-wheel-drive and quattro TTs equipped with this engine can accelerate from 0 to 100 km/h (62 mi/h) in 7.4 s, while the top speed of front-wheel drive at 228 km/h (142 mi/h) is slightly greater than the 226 km/h (140 mi/h) of the quattro model. In fourth gear, the 132-kW TT Coupe can accelerate from 60 to 120 km/h (37 to 75 mi/h) in 9.8 seconds. "
"The higher-output 165-kW (225-hp) engine uses a high compression ratio (8.9:1) for a turbocharged unit. The 1.8-L engine was extensively modified to attain the higher output reliably. The pistons, connecting rods, and big-end bearings were uprated to accommodate the higher combustion pressures. The double-mass flywheel and clutch were modified to match the greater performance. The intake manifold, turbocharger, and exhaust manifold are new.
A Type K04 turbocharger forces air into the combustion chamber via two charge-air intercoolers. Compared to the less powerful 132-kW unit, a modified airflow path, together with a larger air cleaner, ensures that the air reaching the engine has a temperature only about 30¡C higher than ambient. This 80% charge-air intercooler efficiency keeps the engine supplied with an optimum flow of oxygen-rich air. Maximum boost pressure at the intake manifold can reach 200 kPa (29 lb/in2).
The engine's torque curve is impressive, with 280 N*m (207 lb*ft) available from 2200 to 5500 rpm. With it, the TT can accelerate from 0 to 100 km/h (62 mi/h) in 6.4 s and has a top speed in the region of 243 km/h (150 mi/h). Flexibility is also impressive, needing only 11.2 s to accelerate from 60 to 120 km/h (37 to 75 mi/h) in fifth gear. The TT equipped with this engine and quattro all-wheel drive has a total fuel consumption of 9.2 L/100 km, according to the EU 93/116 test.
The "lower-output" 132-kW (180-bhp) engine still manages a specific output of 100 hp/L. It uses a relatively smaller KKK Type K03 turbocharger, its lower moment of inertia allowing the engine to respond more rapidly to accelerator pedal movements. Boost pressure builds more quickly for reduced "turbo lag." Torque at lower engine speeds is aided by optimized throttle-butterfly and boost-pressure settings. Audi says the turbocharger and five valves per cylinder layout work ideally together, since the potential of the turbocharger can be used to the fullest extent by the large total cross-sectional area of the valves in each cylinder.
An even higher compression ratio of 9.5:1 ensures high efficiency and low fuel consumption. According to the EU 93/116 standard, total fuel consumption for the front-wheel-drive version is 8.0 L/100 km. Torque of at least 235 N*m (173 lb*ft) is available from 1950 to 5000 rpm. Front-wheel-drive and quattro TTs equipped with this engine can accelerate from 0 to 100 km/h (62 mi/h) in 7.4 s, while the top speed of front-wheel drive at 228 km/h (142 mi/h) is slightly greater than the 226 km/h (140 mi/h) of the quattro model. In fourth gear, the 132-kW TT Coupe can accelerate from 60 to 120 km/h (37 to 75 mi/h) in 9.8 seconds. "
03-22-2005, 02:55 PM
#6
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I thought 180s had more to gain from chip, plus you can do easy forced air feed >>>
which I wish I could do. swapping turbo seems like a real hassle, but then I'm just a bolt-on mod type.
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