VTEC in all cars?
01-05-2004, 08:04 PM
#11
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Originally posted by PHiZ
zetec/ecotec neither of them are variable valve timing correct?
BMW has MOTEC.
-PHiZ
zetec/ecotec neither of them are variable valve timing correct?
BMW has MOTEC.
-PHiZ
01-06-2004, 12:43 AM
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Re: VTEC in all cars?
Originally posted by Fly Rice
my brother who drives an audi claims that the vtec system in the hondas and acuras is nothing special and that about 95% of all cars have this tech. just want to know why the honda VTEC is so special
my brother who drives an audi claims that the vtec system in the hondas and acuras is nothing special and that about 95% of all cars have this tech. just want to know why the honda VTEC is so special
Actually VTEC in the B series engines is less advanced than some of the newer variants of variable valve timing like VVT-i or the SVT Focus's timing. VTEC can only change between two cam profiles, but the newer versions can change timing as well. i-VTEC can change timing as well, but's not nearly as widespread as B series VTEC. Honda just did a really job marketing VTEC in its car, and they do make one heck of an engine, of which VTEC is just one piece.
01-06-2004, 11:54 AM
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Re: Re: VTEC in all cars?
Originally posted by Kestrel
Once upon a time VTEC was unique in the car industry, but your brother is right, a lot of cars do have some form of variable valve timing, especially luxury cars or more performance oriented sport compacts (Celica, WRX, SVT Focus etc.). A lot of companies don't give variable valve timing a name or market it.
Actually VTEC in the B series engines is less advanced than some of the newer variants of variable valve timing like VVT-i or the SVT Focus's timing. VTEC can only change between two cam profiles, but the newer versions can change timing as well. i-VTEC can change timing as well, but's not nearly as widespread as B series VTEC. Honda just did a really job marketing VTEC in its car, and they do make one heck of an engine, of which VTEC is just one piece.
Once upon a time VTEC was unique in the car industry, but your brother is right, a lot of cars do have some form of variable valve timing, especially luxury cars or more performance oriented sport compacts (Celica, WRX, SVT Focus etc.). A lot of companies don't give variable valve timing a name or market it.
Actually VTEC in the B series engines is less advanced than some of the newer variants of variable valve timing like VVT-i or the SVT Focus's timing. VTEC can only change between two cam profiles, but the newer versions can change timing as well. i-VTEC can change timing as well, but's not nearly as widespread as B series VTEC. Honda just did a really job marketing VTEC in its car, and they do make one heck of an engine, of which VTEC is just one piece.
-PHiZ
01-06-2004, 08:07 PM
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Originally posted by Technodigifreak
good point BUT, in the newest camry's, avalon's and lexus' use an i-vvt engine
and btw the s2000 creates 120hp/l, that is before the lattest itteration with a 2.2l engine, which has even more horsepower
good point BUT, in the newest camry's, avalon's and lexus' use an i-vvt engine
and btw the s2000 creates 120hp/l, that is before the lattest itteration with a 2.2l engine, which has even more horsepower
yea true but it also guzzles gas like a V8 but i am in NO WAY saying that a friggen celica is better than the S2000....though i must say i used to have a 1991 GT-S....which was sweet.
and the new s2000s still have 240 hp
01-06-2004, 11:12 PM
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Originally posted by PHiZ
zetec/ecotec neither of them are variable valve timing correct?
BMW has MOTEC.
-PHiZ
zetec/ecotec neither of them are variable valve timing correct?
BMW has MOTEC.
-PHiZ
BWM has Vanos.
MOTEC makes race electronics.
01-07-2004, 08:08 PM
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Originally posted by qtiger
The new ecotecs have variable valve timing.
BWM has Vanos.
MOTEC makes race electronics.
The new ecotecs have variable valve timing.
BWM has Vanos.
MOTEC makes race electronics.
-PHiZ
01-09-2004, 07:07 PM
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Re: Re: Re: VTEC in all cars?
Originally posted by PHiZ
I know the VVTL-I has variable valve lift and variable valve timing. I don't know about infinitely variable timing though.
-PHiZ
I know the VVTL-I has variable valve lift and variable valve timing. I don't know about infinitely variable timing though.
-PHiZ
FYI, toyota introduced their first VVT-i engine in 91 with the 4A-GE 20 valve engine. the fifth valve actuated at a certian engine speed too. gee whiz