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As popular cars became faster relative to legal limits and fuel costs became more important, particularly after the 1973 oil crisis, the use of five-speed gearboxes became more common in mass-market cars. These had a direct (1:1) fourth gear with an overdrive fifth gear, replacing the need for the separate overdrive gearbox. [1]
Although not strictly a part of classic torque converter design, many automotive converters include a lock-up clutch to improve cruising power transmission efficiency and reduce heat. The application of the clutch locks the turbine to the impeller, causing all power transmission to be mechanical, thus eliminating losses associated with fluid drive.
Additionally, the 3RZ-FE uses the same family of Toyota W-series transmissions as the fuel injected Hilux, so older Hilux W56 transmissions may be used with the new 3RZ-FE by using the W59 bellhousing. The 3RZ-FE flywheel and clutch components are fully compatible making this a great replacement engine for old Toyota Hilux engines.
Based upon the size of the clutch or brake, the speed and the inertia, wear rates will differ. For example, a machine that was running at 500 rpm with a clutch and is now sped up to 1000 rpm would have its wear rate significantly increased because the amount of energy required to start the same amount of inertia is a lot higher at the higher speed.
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Another late retirement was the EMKA BMW. Having finally done the clutch replacement, that cost an hour, the car stopped at Mulsanne corner after an oil leak drained the motor with less than two hours to go. [38] This left the works Porsches running 1-2-3, coincidentally in that numerical order, and that is how they finished without further ...
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