VTEC...i-VTEC?? - Page 3

BigT · 02-05-2008, 01:28 PM

Quote:

Originally Posted by mitsukaiSI

vtec only on the intake came is for the ep3 thats a large part of why it sucked so much ass i dont think our vtec is only on intake cam

Right, sorry. I was thinking of the K20A3 vs the K20Z3.

mitsukaiSI · 02-05-2008, 02:11 PM

Quote:

Originally Posted by BigT

Right, sorry. I was thinking of the K20A3 vs the K20Z3.

its ok . . . i was wrong guys you are right

sorry i was confused about the lobe . . . forgot that it was one lobe per valve per camshaft . . . for somerason i was picturing vtec on the end of end of the three lobe cam deal like first and scond lobe then vtec lobe instead of how it is reg lobe vtec lobe then reg lobe again

***blacksi2007*** · 02-05-2008, 02:16 PM

Quote:

Originally Posted by Si Speed 317

i-vtec. Do you?

got that vinal on my beater!

El Sì · 02-05-2008, 09:15 PM

its all good. we're all here to learn and share info!

Tronixx · 02-06-2008, 12:09 AM

Here's a question I've been wondering about...the EP3 is widely bashed yet the 99-00 Si is celebrated. Both came with 160HP. The 99-00 had VTEC and the EP3 i-VTEC. So if both had the same power, how could one car possibly outperform the other by a wide margin? Basically, it seems like the VTEC configuration on the EP3 was garbage but why would Honda come out with a new Si that was that much worse than the previous one? Was the B16 just a more capable motor than the K20a3? Or do people just bash the car because of the way it looked?

On that note, and maybe this is where this argument for the old VTEC motors come from. The B18 for the Integra GSR was incredible, it seemed like those cars pulled every bit as hard as our new Si's do but maybe it was just me. They didn't seem to have the quirkiness of the new Si motor either, felt like a tad more low-end power, and the car wasn't all "bucky" when the engine was cold after startup.

bizzybearfigiblue · 02-06-2008, 12:28 AM

i'm glad that everyone came to an understanding with how this works...

Quote:

Originally Posted by Tronixx

Here's a question I've been wondering about...the EP3 is widely bashed yet the 99-00 Si is celebrated. Both came with 160HP. The 99-00 had VTEC and the EP3 i-VTEC. So if both had the same power, how could one car possibly outperform the other by a wide margin? Basically, it seems like the VTEC configuration on the EP3 was garbage but why would Honda come out with a new Si that was that much worse than the previous one? Was the B16 just a more capable motor than the K20a3? Or do people just bash the car because of the way it looked?

On that note, and maybe this is where this argument for the old VTEC motors come from. The B18 for the Integra GSR was incredible, it seemed like those cars pulled every bit as hard as our new Si's do but maybe it was just me. They didn't seem to have the quirkiness of the new Si motor either, felt like a tad more low-end power, and the car wasn't all "bucky" when the engine was cold after startup.

the B16A2 Si had a redline of 8,200rpms while the K20A3 had a redline of 6,850rpms...

not to mention the weight of the 99-00 Si which was just about 2,600lbs stock... vs the 02-05 Si with a weight of 2,744lbs stock...

i personally think they made the EP3 so crappy b/c the release of the RSX that same year... since Acura is the higher brand it needs the better motor... and at the time of release they didn't have that many variants of the K20... so they decided to give the EP3 the crappy one... but it still had vtec to make up for some loss in power and have some appeal to the market... otherwise that car would've never sold...

now they were in the process of getting rid of the RSX which is why the 6thgen Si got the good K20Z3 in it...

07k20z3ftw · 02-06-2008, 09:05 AM

well you see one has a I on the sticker and one doesnt...so obviously an extra letter has to make it better...

wbb1211 · 02-06-2008, 09:17 AM

So why is the new Accord V6 with the automatic I-VTEC and the V6 Accord Coupe with the 6 speed MT just VTEC. Honda said it was for higher preformance through the entire RPM range.

bizzybearfigiblue · 02-06-2008, 12:52 PM

Quote:

Originally Posted by wbb1211

So why is the new Accord V6 with the automatic I-VTEC and the V6 Accord Coupe with the 6 speed MT just VTEC. Honda said it was for higher preformance through the entire RPM range.

i would like to answer this... but i have no clue what ur asking...

wbb1211 · 02-07-2008, 09:42 AM

I was just trying to find out that if the I-VTEC is better than the VTEC then why does Honda use the I-VTEC on the 2008 Accords with the V6 and automatic trans and the VTEC for the 2008 Accords with the V6 and 6 speed manual trans.

wbb1211 · 02-07-2008, 08:14 PM

??? I was just curious about this I asked on the 8th Accord site and never got any remarks there as well.

Firestrife · 02-07-2008, 08:21 PM

i-vtec in the V6 accords is different I just means that it has Variable Cylinder Management Honda has weird naming issues.

wbb1211 · 02-07-2008, 08:39 PM

well also the Accord V6 is SOHC and the SI is DOHC did I get that right? I thought my SI when I had it had 2 cams and my Accord that I have now only has 1. I want a V6 just like the engine I had in my SI! A 4.0L V6! would that be cool? I was old school with the V8, I was way impressed with what Honda did with this 8th gen SI! I never in my live have ever had a car like that. I am 37 now and it just put me over the limit and out of control. I had to let go of it while I am ticket free and still alive. I have had several fast cars but never had one like my SI that I wanted to push to the limit every time I got in it. My accord is cool but still miss it! Now that I don't have it hope all don't mind that I still hang here.

chugiboi · 02-07-2008, 11:15 PM

Quote:

Originally Posted by wbb1211

I was just trying to find out that if the I-VTEC is better than the VTEC then why does Honda use the I-VTEC on the 2008 Accords with the V6 and automatic trans and the VTEC for the 2008 Accords with the V6 and 6 speed manual trans.

from what i notice so far was that the new accord I4 k24 motor has i-vtec, but the v6 one only has vtec, not i-vtec. strange how honda does that, unless i-vtec was only meant for I4, not v6. i'm not sure myself either.

wbb1211 · 02-11-2008, 12:15 PM

Quote:

Originally Posted by chugiboi

from what i notice so far was that the new accord I4 k24 motor has i-vtec, but the v6 one only has vtec, not i-vtec. strange how honda does that, unless i-vtec was only meant for I4, not v6. i'm not sure myself either.

The Accord Coupe with V6 and 6 speed MT is just a vtec set up. All the rest of the V6 accords are i-vtec with VCM.

20civic07 · 02-11-2008, 12:45 PM

vtec > ivtec for performance, ivtec > vtec for gas savings

bizzybearfigiblue · 02-11-2008, 01:30 PM

Quote:

Originally Posted by 20civic07

vtec > ivtec for performance, ivtec > vtec for gas savings

where did u read that?? it's not true... they both have an aggressive form of vtec and an economy form of vtec...

sum1 already mentioned b4 that iVtec has continuous variable camshaft phasing... which simply means it can adjust the timing... vtec motors can't adjust timing automatically...

VCM on the Accord w/iVtec just means that the engine can shut off a number of cylinders... the manual can't do that b/c it's manual and if part of the motor is shut down and u down shift, u can damage something... that's y the auto has iVtec w/VCM and the manual has regular vtec w/o VCM...

wbb1211 · 02-11-2008, 02:34 PM

I would guess that the Accord and the si don't quite work or function quite the same. This sort of threw me for a loop when I looked at the Accords. It is hard to find a Coupe whith the V6 and 6speed. So I had to make up my mind fast. I thought they all had the VCM and i-vtec. I didn't know that the V6 6speed coupe was different. I also heard it as a different intake as well.

bizzybearfigiblue · 02-11-2008, 02:49 PM

i don't know about the intake... but they are different... it's still the same as previous years... the 6spd doesn't have iVtec w/VCM it just has regular vtec... i just confirmed that with a friend that just bought one...

mikaelo13 · 02-11-2008, 04:11 PM

02-06-2008, 09:05 AM	#47 (permalink)
07k20z3ftw Senior Member Join Date: Jul 2007 Location: Outside of Orlando, Florida Posts: 1,442 Mitch iTrader: 0 / 0%	well you see one has a I on the sticker and one doesnt...so obviously an extra letter has to make it better... Last edited by 07k20z3ftw; 02-06-2008 at 09:12 AM.

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02-05-2008, 09:15 PM	#44 (permalink)
El Sì Senior Member Join Date: Oct 2007 Location: Lost in union county Age: 25 Posts: 371 Lawrence iTrader: 1 / 100%	its all good. we're all here to learn and share info!

02-06-2008, 12:09 AM	#45 (permalink)
Tronixx Senior Member Join Date: Oct 2007 Posts: 201 iTrader: 0 / 0%	Here's a question I've been wondering about...the EP3 is widely bashed yet the 99-00 Si is celebrated. Both came with 160HP. The 99-00 had VTEC and the EP3 i-VTEC. So if both had the same power, how could one car possibly outperform the other by a wide margin? Basically, it seems like the VTEC configuration on the EP3 was garbage but why would Honda come out with a new Si that was that much worse than the previous one? Was the B16 just a more capable motor than the K20a3? Or do people just bash the car because of the way it looked? On that note, and maybe this is where this argument for the old VTEC motors come from. The B18 for the Integra GSR was incredible, it seemed like those cars pulled every bit as hard as our new Si's do but maybe it was just me. They didn't seem to have the quirkiness of the new Si motor either, felt like a tad more low-end power, and the car wasn't all "bucky" when the engine was cold after startup.

02-06-2008, 09:17 AM	#48 (permalink)
wbb1211 Senior Member Join Date: Aug 2006 Age: 37 Posts: 277 iTrader: 0 / 0%	So why is the new Accord V6 with the automatic I-VTEC and the V6 Accord Coupe with the 6 speed MT just VTEC. Honda said it was for higher preformance through the entire RPM range.

02-07-2008, 09:42 AM	#50 (permalink)
wbb1211 Senior Member Join Date: Aug 2006 Age: 37 Posts: 277 iTrader: 0 / 0%	I was just trying to find out that if the I-VTEC is better than the VTEC then why does Honda use the I-VTEC on the 2008 Accords with the V6 and automatic trans and the VTEC for the 2008 Accords with the V6 and 6 speed manual trans.

02-07-2008, 08:14 PM	#51 (permalink)
wbb1211 Senior Member Join Date: Aug 2006 Age: 37 Posts: 277 iTrader: 0 / 0%	??? I was just curious about this I asked on the 8th Accord site and never got any remarks there as well.

02-07-2008, 08:21 PM	#52 (permalink)
Firestrife Senior Member Join Date: May 2007 Location: Gainesville, FL Age: 20 Posts: 3,491 Keenan iTrader: 9 / 100%	i-vtec in the V6 accords is different I just means that it has Variable Cylinder Management Honda has weird naming issues.

02-07-2008, 08:39 PM	#53 (permalink)
wbb1211 Senior Member Join Date: Aug 2006 Age: 37 Posts: 277 iTrader: 0 / 0%	well also the Accord V6 is SOHC and the SI is DOHC did I get that right? I thought my SI when I had it had 2 cams and my Accord that I have now only has 1. I want a V6 just like the engine I had in my SI! A 4.0L V6! would that be cool? I was old school with the V8, I was way impressed with what Honda did with this 8th gen SI! I never in my live have ever had a car like that. I am 37 now and it just put me over the limit and out of control. I had to let go of it while I am ticket free and still alive. I have had several fast cars but never had one like my SI that I wanted to push to the limit every time I got in it. My accord is cool but still miss it! Now that I don't have it hope all don't mind that I still hang here.

02-11-2008, 12:45 PM	#56 (permalink)
20civic07 Senior Member Join Date: Mar 2007 Posts: 1,733 iTrader: 18 / 100%	vtec > ivtec for performance, ivtec > vtec for gas savings

02-11-2008, 02:34 PM	#58 (permalink)
wbb1211 Senior Member Join Date: Aug 2006 Age: 37 Posts: 277 iTrader: 0 / 0%	I would guess that the Accord and the si don't quite work or function quite the same. This sort of threw me for a loop when I looked at the Accords. It is hard to find a Coupe whith the V6 and 6speed. So I had to make up my mind fast. I thought they all had the VCM and i-vtec. I didn't know that the V6 6speed coupe was different. I also heard it as a different intake as well.

02-11-2008, 02:49 PM	#59 (permalink)
bizzybearfigiblue Senior Member Member Join Date: Apr 2006 Posts: 18,279 iTrader: 4 / 100%	i don't know about the intake... but they are different... it's still the same as previous years... the 6spd doesn't have iVtec w/VCM it just has regular vtec... i just confirmed that with a friend that just bought one...

02-11-2008, 04:11 PM	#60 (permalink)
mikaelo13 Senior Member Join Date: Dec 2007 Location: los angeles, cali Posts: 2,159 mike iTrader: 0 / 0%