v-tec Vs. vvti
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Scion Evolution
Joined: Dec 2004
Posts: 99
From: The Neon Jungle Las Vegas
vtec wins. not only that the honda motors run higher oil compression if i remember correctly which is the reson why the blocks basically last forever and reason why ppl drop turbos
im with the 4g63 crowd always been a fan since the evo6. my 4g64 died on me (i'm never gonna go below 2.4l ever now
)
im with the 4g63 crowd always been a fan since the evo6. my 4g64 died on me (i'm never gonna go below 2.4l ever now
)
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Joined: May 2005
Posts: 1,726
Forget about compression for the moment and would someone explain why comparable i-VTEC is superior to VVT-i? I'm talking about the economy i-VTEC found on the K20A3 and not the i-VTEC with the high lift lobe.
The "problem" with the 2AZ and most recent Toyota engines is that they weren't designed from the ground up for sport. The tC uses its sheer size advantage and short gearing to account for all its "sportiness." Other than that design difference, why is VVT-i worse than VTEC?
The "problem" with the 2AZ and most recent Toyota engines is that they weren't designed from the ground up for sport. The tC uses its sheer size advantage and short gearing to account for all its "sportiness." Other than that design difference, why is VVT-i worse than VTEC?
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Scion Evolution
Joined: Dec 2004
Posts: 99
From: The Neon Jungle Las Vegas
Originally Posted by kungpaosamuraiii
Forget about compression for the moment and would someone explain why comparable i-VTEC is superior to VVT-i? I'm talking about the economy i-VTEC found on the K20A3 and not the i-VTEC with the high lift lobe.
the ivtec not only uses valve timing for intake and exhaust mostly on higher revs. it also adjusts the camposition(retard or advance) (VTC), which is why you cant forget about oilcompression honda depends on this plus it helps them rev higher.
Originally Posted by kungpaosamuraiii
The "problem" with the 2AZ and most recent Toyota engines is that they weren't designed from the ground up for sport. The tC uses its sheer size advantage and short gearing to account for all its "sportiness." Other than that design difference, why is VVT-i worse than VTEC?
vtec uses higher revs high lift valves for power. in the long run better and better if the driver can keep at highrpms
its not worse to say but vtec is older technology compared to vvti; honda has addedon and improved on there vtec (ie i-vtec)
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Joined: Sep 2004
Posts: 1,344
From: Queens, NY
Originally Posted by know_fun
i think the ivtec k20a3 "without the high lift lobe" runs 12valves and the other 4valves runs halfassed until needed this vtec is just for fueleconomy and should be compared (seriously how are u gonna pick this to compare to us). someone correct me on this one i'm not 100% sure
the ivtec not only uses valve timing for intake and exhaust mostly on higher revs. it also adjusts the camposition(retard or advance) (VTC), which is why you cant forget about oilcompression honda depends on this plus it helps them rev higher.
the ivtec not only uses valve timing for intake and exhaust mostly on higher revs. it also adjusts the camposition(retard or advance) (VTC), which is why you cant forget about oilcompression honda depends on this plus it helps them rev higher.
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