VTEC vs. regular engine
Thread Starter
Member
Joined: Jun 2004
Posts: 62
Likes: 0
From: Rochester, NY
VTEC vs. regular engine
What is the major difference in the regular engine in a '94 accord, and the VTEC other than the variable valve timing? Does a VTEC really make a huge difference?
Change sig? Lose [quote]!
Joined: Jan 2004
Posts: 1,414
Likes: 0
From: Little Rock, AR
It really depends on the car. Accords don't have the more aggressive form of VTEC, we don't have the weaker VTEC-E, but basically the VTEC found on Accords is more based for economy versus performance. When you're talking about a GS-R Integra, S2000, RSX-S, or anything more aimed at the 'sport' market then VTEC matters more.
I eat plastic.
Joined: Dec 2002
Posts: 15,177
Likes: 0
From: Detroit, MI
Meh.
Guy at the track ran a 17.4 as his best time with a 5 speed 94 accord EX (VTEC). I ran a 17.7 best time with an automatic '97 SE (no-vtec).
Both are slow.
It's mainly to keep the engine's power curve smooth. (although you'd only notice it back to back). I don't believe there is a mileage issue between the two (i think the non-vtecs get, maybe, 1 more mpg then the vtecs).
Guy at the track ran a 17.4 as his best time with a 5 speed 94 accord EX (VTEC). I ran a 17.7 best time with an automatic '97 SE (no-vtec).
Both are slow.
It's mainly to keep the engine's power curve smooth. (although you'd only notice it back to back). I don't believe there is a mileage issue between the two (i think the non-vtecs get, maybe, 1 more mpg then the vtecs).
Registered User
Joined: Jul 2004
Posts: 22
Likes: 0
i think red goober is mistaken on one point,
vtec's are designed for superiour milage, having the air pulled into the cylinder on one side instead of the middle produces a swirling motion inside the cylinder to keep the fuel suspended in the air rather then splattering on the cylinder walls where it just burns.
as for difference, some but not huge, but totally right, the honda vtec engine variants are only SOHC, while the acura ones are DOHC or so i have read. in the honda variant its only the intake which is effected with the extra valve while the dohc has 2 for both exhaust and intake --- *i think* i may be mistaken on that one though.
however everything else he said, i'd have to agree with.
its suppost to have on cam profile more for economy and low end torque and the other for high end HP,, tho my friend had a 95 accord vtec automatic, and now he has a 91 stick, and the 91 feels faster.....
vtec's are designed for superiour milage, having the air pulled into the cylinder on one side instead of the middle produces a swirling motion inside the cylinder to keep the fuel suspended in the air rather then splattering on the cylinder walls where it just burns.
as for difference, some but not huge, but totally right, the honda vtec engine variants are only SOHC, while the acura ones are DOHC or so i have read. in the honda variant its only the intake which is effected with the extra valve while the dohc has 2 for both exhaust and intake --- *i think* i may be mistaken on that one though.
however everything else he said, i'd have to agree with.
its suppost to have on cam profile more for economy and low end torque and the other for high end HP,, tho my friend had a 95 accord vtec automatic, and now he has a 91 stick, and the 91 feels faster.....
Registered User
Joined: Jul 2004
Posts: 22
Likes: 0
http://www.edmunds.com/reviews/gener...9/article.html.
might help a little with hp numbers and stuff
might help a little with hp numbers and stuff
"Made to Please"
Joined: Nov 2003
Posts: 391
Likes: 0
From: Philly
Originally Posted by dosmastr
its suppost to have on cam profile more for economy and low end torque and the other for high end HP,, tho my friend had a 95 accord vtec automatic, and now he has a 91 stick, and the 91 feels faster.....
I think that 91 may seem faster to you because it's a manual...
