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On 2001-08-07 19:26, TRDCelica wrote:
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On 2001-08-07 12:34, AssatC87Bruins wrote:
Here in Finland there is two different Celicas. A base model: Celica VVT-i which has 105 kw=142.8 hp and then there is the better version, the Celica VVTL-i T Sport which has 141 kw=191.76 hp. I'm not sure how much the GT-S has but I don't think it is that much... The T sport DOES NOT mean turbo. Sorry.
Oh and the T Sports I've seen all have a dual tip center exhaust. I don't know if it's a TRD add on..though which they do a lot of here.
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<font size=-1>[ This Message was edited by: AssatC87Bruins on 2001-08-07 12:38 ]</font>
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The GT-S has the 1.8L 2ZZ-GE VVTL-i engine as well, rated at 180hp. The reason your VVTL-i version makes more power is because the timing is advanced due to the higher octane gas available outside of north america.
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There's a second cam, high performance profile that kicks in at high revs in the VVTL-i, resulting in the lift or kick in more horsepower. The second cam works by increasing the overlapping between the intake and exhaust valves, which enables more air to come in and out at high revs.
And the main reason VVTL-i's need higher octane gas is the high compression ratio 11.5:1. Higher octane gas doesn't really relate to higher performance, it's only to avoid or prevent detonation or pre-ignition.
The T-sport still uses the same design of the 2zz-fe (VVTL-i), but with some tweaks in the engine, giving the added 10 horses. I'm guessing they got rid of the high mechanical friction losses (between pistons, cylinder walls, pins) that reduce horsepower by using high performance, low friction parts or materials. Most muscle car tunners use this idealogy to gain performance in their cars to 10+ hourses.
