VTEC is over-rated
Registered User
Joined: Apr 2003
Posts: 161
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Well you are sort of right and sort of wrong.
VTEC isn’t any thing special if you had two 2 liter engines, one with vtec, one without and the engine without it had the same cam grind as the 2nd set of cam lobs on the vtec engine then they’d still make the same power.
Honda uses VTEC for fuel economy period, but that isn’t to say that it is its only use. GM’s DOHC 24 valve Inline 6 uses a VVT system to make 80% of its torque at just 1,800rpms.
The concept of VVT goes well beyond the automotive use back to the days of WW2 when US aircraft manufactures invented a system in 1943 to do this very thing in an attempt to give the big fighter plane engines further range as everyone knew they would eventually have to escort bombers over Berlin and Tokyo.
Honda’s use of the system actually dates back to the 1960s and their class wining GP motorcycles.
VTEC isn’t any thing special if you had two 2 liter engines, one with vtec, one without and the engine without it had the same cam grind as the 2nd set of cam lobs on the vtec engine then they’d still make the same power.
Honda uses VTEC for fuel economy period, but that isn’t to say that it is its only use. GM’s DOHC 24 valve Inline 6 uses a VVT system to make 80% of its torque at just 1,800rpms.
The concept of VVT goes well beyond the automotive use back to the days of WW2 when US aircraft manufactures invented a system in 1943 to do this very thing in an attempt to give the big fighter plane engines further range as everyone knew they would eventually have to escort bombers over Berlin and Tokyo.
Honda’s use of the system actually dates back to the 1960s and their class wining GP motorcycles.