VTEC-E, 12 valves??
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VTEC-E, 12 valves??
Hey, I hear that in the EX trim, it's actually a VTEC-E engine. Which only uses 12 valves when driving at normal RMPs? When it goes into VTEC mode, then it uses 16 valves? true?
(Please don't flame, i know how VTEC works, opening all 16 valves isn't really VTEC, I just want to know if it's true that the car runs with 12 valves until the VTEC kicks in???)
(Please don't flame, i know how VTEC works, opening all 16 valves isn't really VTEC, I just want to know if it's true that the car runs with 12 valves until the VTEC kicks in???)
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EX has real SOHC VTEC. Both intake valves open just as far on both the low cam and high cam, niether is ever closed when the other is opening. Exhaust valve timing is always the same
HX has 1 intake valve until around 2500, then both kick in, then at 4800, both follow the high cam.
The i-VTEC system in the Si, has 1 intake valve following the primary cam, the other follows a secondary (whimpier) profile. At 2300, the second intake valve switches over to the primary cam profile, and that's all you get.
HX has 1 intake valve until around 2500, then both kick in, then at 4800, both follow the high cam.
The i-VTEC system in the Si, has 1 intake valve following the primary cam, the other follows a secondary (whimpier) profile. At 2300, the second intake valve switches over to the primary cam profile, and that's all you get.
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Rep Power: 0 Right from Carpoint.msn.com
Trim Details: The 2003 Honda Civic is available in nine trims: DX, LX, EX and Hybrid 4-door sedans; DX, HX, LX and EX 2-door coupes; Si hatchback. Safety features include dual airbags, available side airbags, child safety locks (sedans only), and an anti-lock brake system (ABS), which is standard on EX and Si trims. A 1.7-liter 115-horsepower engine powers DX and LX trims while the HX coupe receives a 1.7-liter 117-horsepower VTEC-E lean burn power plant. EX trims step up to a 1.7-liter 127-horsepower VTEC-E engine and the new Si sports a 2.0-liter i-VTEC engine producing 160 horsepower. The Civic Hybrid is powered by a combination of a 1.3-liter 4-cylinder engine and high-output brushless electric motor which are operated in parallel using Honda's Integrated Motor Assist (IMA) system. A total of 93 horsepower is generated when both are in operation. All trims feature an AM/FM stereo, intermittent wipers, tinted glass, power steering, front stabilizer bar, and a 60/40 split-folding rear seatback. LX trims add air conditioning, cruise control, a CD player, tachometer, map lights, and power mirrors, windows and door locks. The fuel-thrifty HX features an available Continuously Variable Transmission (CVT) and lightweight alloy wheels. The CVT is also available on the Hybrid, which also features automatic climate control, remote keyless entry, rear spoiler, and 14-inch lightweight alloy wheels. Top-of-the-line EX trims include a power moonroof, 15-inch alloy wheels (coupe), a rear stabilizer bar, and body-color mirrors and door handles. The sporty Si features a close-ratio 5-speed manual transmission mounted rally-style on the dashboard, sport seats, rear spoiler, unique gauges, and 15-inch alloy wheels.
Trim Details: The 2003 Honda Civic is available in nine trims: DX, LX, EX and Hybrid 4-door sedans; DX, HX, LX and EX 2-door coupes; Si hatchback. Safety features include dual airbags, available side airbags, child safety locks (sedans only), and an anti-lock brake system (ABS), which is standard on EX and Si trims. A 1.7-liter 115-horsepower engine powers DX and LX trims while the HX coupe receives a 1.7-liter 117-horsepower VTEC-E lean burn power plant. EX trims step up to a 1.7-liter 127-horsepower VTEC-E engine and the new Si sports a 2.0-liter i-VTEC engine producing 160 horsepower. The Civic Hybrid is powered by a combination of a 1.3-liter 4-cylinder engine and high-output brushless electric motor which are operated in parallel using Honda's Integrated Motor Assist (IMA) system. A total of 93 horsepower is generated when both are in operation. All trims feature an AM/FM stereo, intermittent wipers, tinted glass, power steering, front stabilizer bar, and a 60/40 split-folding rear seatback. LX trims add air conditioning, cruise control, a CD player, tachometer, map lights, and power mirrors, windows and door locks. The fuel-thrifty HX features an available Continuously Variable Transmission (CVT) and lightweight alloy wheels. The CVT is also available on the Hybrid, which also features automatic climate control, remote keyless entry, rear spoiler, and 14-inch lightweight alloy wheels. Top-of-the-line EX trims include a power moonroof, 15-inch alloy wheels (coupe), a rear stabilizer bar, and body-color mirrors and door handles. The sporty Si features a close-ratio 5-speed manual transmission mounted rally-style on the dashboard, sport seats, rear spoiler, unique gauges, and 15-inch alloy wheels.
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Rep Power: 0 This is weird...I loged onto Honda.com here's what they say..
Every family needs an overachiever, and the EX Coupe is the Civic's top standout. With a high-performance 1.7-liter, 127-hp VTEC® engine and 15-inch wheels and tires, the Civic EX Coupe is near the top of its class. Take the LX and add to that a power moonroof with tilt feature, an AM/FM/CD audio system with 6 speakers, an anti-lock braking system (ABS) and a driver's seat with manual seat height adjustment, and there's no doubt the Civic EX goes above and beyond the call of duty.
I think Honda.com would know more than carpoint
Every family needs an overachiever, and the EX Coupe is the Civic's top standout. With a high-performance 1.7-liter, 127-hp VTEC® engine and 15-inch wheels and tires, the Civic EX Coupe is near the top of its class. Take the LX and add to that a power moonroof with tilt feature, an AM/FM/CD audio system with 6 speakers, an anti-lock braking system (ABS) and a driver's seat with manual seat height adjustment, and there's no doubt the Civic EX goes above and beyond the call of duty.
I think Honda.com would know more than carpoint
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Quote
[hr]Originally posted by: Flash31
Right from Carpoint.msn.com
Trim Details: The 2003 Honda Civic is available in nine trims: DX, LX, EX and Hybrid 4-door sedans; DX, HX, LX and EX 2-door coupes; Si hatchback. Safety features include dual airbags, available side airbags, child safety locks (sedans only), and an anti-lock brake system (ABS), which is standard on EX and Si trims. A 1.7-liter 115-horsepower engine powers DX and LX trims while the HX coupe receives a 1.7-liter 117-horsepower VTEC-E lean burn power plant. EX trims step up to a 1.7-liter 127-horsepower VTEC-E engine and the new Si sports a 2.0-liter i-VTEC engine producing 160 horsepower. The Civic Hybrid is powered by a combination of a 1.3-liter 4-cylinder engine and high-output brushless electric motor which are operated in parallel using Honda's Integrated Motor Assist (IMA) system. A total of 93 horsepower is generated when both are in operation. All trims feature an AM/FM stereo, intermittent wipers, tinted glass, power steering, front stabilizer bar, and a 60/40 split-folding rear seatback. LX trims add air conditioning, cruise control, a CD player, tachometer, map lights, and power mirrors, windows and door locks. The fuel-thrifty HX features an available Continuously Variable Transmission (CVT) and lightweight alloy wheels. The CVT is also available on the Hybrid, which also features automatic climate control, remote keyless entry, rear spoiler, and 14-inch lightweight alloy wheels. Top-of-the-line EX trims include a power moonroof, 15-inch alloy wheels (coupe), a rear stabilizer bar, and body-color mirrors and door handles. The sporty Si features a close-ratio 5-speed manual transmission mounted rally-style on the dashboard, sport seats, rear spoiler, unique gauges, and 15-inch alloy wheels.[hr]
[hr]Originally posted by: Flash31
Right from Carpoint.msn.com
Trim Details: The 2003 Honda Civic is available in nine trims: DX, LX, EX and Hybrid 4-door sedans; DX, HX, LX and EX 2-door coupes; Si hatchback. Safety features include dual airbags, available side airbags, child safety locks (sedans only), and an anti-lock brake system (ABS), which is standard on EX and Si trims. A 1.7-liter 115-horsepower engine powers DX and LX trims while the HX coupe receives a 1.7-liter 117-horsepower VTEC-E lean burn power plant. EX trims step up to a 1.7-liter 127-horsepower VTEC-E engine and the new Si sports a 2.0-liter i-VTEC engine producing 160 horsepower. The Civic Hybrid is powered by a combination of a 1.3-liter 4-cylinder engine and high-output brushless electric motor which are operated in parallel using Honda's Integrated Motor Assist (IMA) system. A total of 93 horsepower is generated when both are in operation. All trims feature an AM/FM stereo, intermittent wipers, tinted glass, power steering, front stabilizer bar, and a 60/40 split-folding rear seatback. LX trims add air conditioning, cruise control, a CD player, tachometer, map lights, and power mirrors, windows and door locks. The fuel-thrifty HX features an available Continuously Variable Transmission (CVT) and lightweight alloy wheels. The CVT is also available on the Hybrid, which also features automatic climate control, remote keyless entry, rear spoiler, and 14-inch lightweight alloy wheels. Top-of-the-line EX trims include a power moonroof, 15-inch alloy wheels (coupe), a rear stabilizer bar, and body-color mirrors and door handles. The sporty Si features a close-ratio 5-speed manual transmission mounted rally-style on the dashboard, sport seats, rear spoiler, unique gauges, and 15-inch alloy wheels.[hr]
they finally fixed it after finally realizing how dumb they are.Don't think you can quote something from carpoint like they actually know what they are talking about. trust me... EX has VTEC... NO E!
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Rep Power: 425 I trust Honda figures....Civic Specs
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Rep Power: 312 BTW I think the main difference is the camshaft... I took these specs out of my Helm manual.
EX - D17A2 engine
Intake: primary=38.604mm secondary=32.848mm
Exhaust: 38.784mm
HX - D17A6 engine
Intake: primary=38.427mm secondary=32.193mm
Exhaust: 38.784mm
DX/LX - D17A1 engine
Intake: 35.299mm
Exhaust: 37.281mm
EX - D17A2 engine
Intake: primary=38.604mm secondary=32.848mm
Exhaust: 38.784mm
HX - D17A6 engine
Intake: primary=38.427mm secondary=32.193mm
Exhaust: 38.784mm
DX/LX - D17A1 engine
Intake: 35.299mm
Exhaust: 37.281mm
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From: Fort Worth, Texas, US
Rep Power: 0 I remember in 2001, when my civic was new, Honda advertised the EX as having VTEC-E. This has been posted before, but didn't really get to a definite answer. The final word is when someone takes the engine apart, or contacts honda.......I've been confused for so long![IMG]i/expressions/face-icon-small-smile.gif[/IMG]
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