whats the diff between the 250HP & 290HP?
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Joined: Feb 2001
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From: California
From the 98 on the Lexus cars came with the VVti engines.Which means Variable Valve Timing Intelligence i think.Make more power thru out the power band,with the intellegence.Power it more greater in the 290hp enignes.
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Joined: Sep 2001
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From: Florida
Originally posted by edogg
From the 98 on the Lexus cars came with the VVti engines.Which means Variable Valve Timing Intelligence i think.Make more power thru out the power band,with the intellegence.Power it more greater in the 290hp enignes.
From the 98 on the Lexus cars came with the VVti engines.Which means Variable Valve Timing Intelligence i think.Make more power thru out the power band,with the intellegence.Power it more greater in the 290hp enignes.
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Joined: Jul 2001
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From: atlanta
also the 290hp is achieved at 6100rpm , yet the older ones achieve 250hp at like 5600rpm
the 260hp sc400's do it at 5400rpm
i noticed the specs for the SC400 1998 and up are identical to the Jaguar XK8's specs. the same hp at the same rpm, the same torque at the same rpm!
the 260hp sc400's do it at 5400rpm
i noticed the specs for the SC400 1998 and up are identical to the Jaguar XK8's specs. the same hp at the same rpm, the same torque at the same rpm!
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Joined: Jun 2001
Posts: 1,135
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From: Seattle
I'd heard that the difference was from different cams/headwork,which raised the torque peak by nearly 1,000 rpm.This change then made less power at the bottom,more at the top than the older cars.The newer,4 speed auto trans allowed the cars not have to lug around like the older,3 speed autos would if you were to tune/mod the engine the same way.
I just want a six speed so I can go nuts with polishing the heads and intake,and maybe get some cams ground.Now that the U.S. cam grinders are getting a little more hip to the 4-valve,import engines,it's a little easier to get those parts than before.
I just want a six speed so I can go nuts with polishing the heads and intake,and maybe get some cams ground.Now that the U.S. cam grinders are getting a little more hip to the 4-valve,import engines,it's a little easier to get those parts than before.
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redfusion
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Jun 25, 2003 05:24 AM
