How to rev VTEC-E 1.6 up to 7500RPM..?
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How to rev VTEC-E 1.6 up to 7500RPM..?
I've got myself a new 2004 Civic, branded Sport here. We're using 93 octane fuel.
The engines a single overhead cam VTEC-E. Its maniplulating the change of intake valves even for high RPM. It can lit the valves good enough for better intake. But as you know, it cannot change the exhaust valve states. Thus, while approacing the redline, the engine starts to get, somewhat feeling, uhm squeezed. You know what I mean if you know the difference between the DOHC and SOHC VTECs The power starts to drop after 6000rpm at my VTEC-E, untill the 6500RPM redline.
I want to know, if I could change the camshaft and enable high RPM valve motions, along with preserving the actual intake setup, can I gain some power at high RPMS? Most importatly, can I push my 1.6l engine to 7500 RPM limit as DOHC VTECs? What are the differences between a SOHC VTEC and a DOHC VTEC to that DOHCS can rev up to 8000 and SOHCS give up the ghost at 6500..? Will the engine lose too much torque at low RPMS..? VTEC-E is designed for fuel economy in mind... But it does indeed have some power in it to be harrased
To round it all, how can I modify my engine to rev hard up to at least 7500 RPM? Do I need a new fuel pump, oil pump..? What should I need..? If someone can tell me the steps I'll be very grateful
thanx
The engines a single overhead cam VTEC-E. Its maniplulating the change of intake valves even for high RPM. It can lit the valves good enough for better intake. But as you know, it cannot change the exhaust valve states. Thus, while approacing the redline, the engine starts to get, somewhat feeling, uhm squeezed. You know what I mean if you know the difference between the DOHC and SOHC VTECs The power starts to drop after 6000rpm at my VTEC-E, untill the 6500RPM redline.
I want to know, if I could change the camshaft and enable high RPM valve motions, along with preserving the actual intake setup, can I gain some power at high RPMS? Most importatly, can I push my 1.6l engine to 7500 RPM limit as DOHC VTECs? What are the differences between a SOHC VTEC and a DOHC VTEC to that DOHCS can rev up to 8000 and SOHCS give up the ghost at 6500..? Will the engine lose too much torque at low RPMS..? VTEC-E is designed for fuel economy in mind... But it does indeed have some power in it to be harrased
To round it all, how can I modify my engine to rev hard up to at least 7500 RPM? Do I need a new fuel pump, oil pump..? What should I need..? If someone can tell me the steps I'll be very grateful
thanx
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From: Daytona Beach, Florida, US
Rep Power: 351 1. Unless you live outside america you have a D17 hence 1.7L not 1.6L
2. You do not have VTEC-E that was only on certain 1.5L in the mid 90's.
3.To rev to 7500 rpm or anything above the rev limiter u have to modify the ecu. You can do everything to the engine but without doing that its all for nothing.
4. Just get a better engine and dont waste your time.
2. You do not have VTEC-E that was only on certain 1.5L in the mid 90's.
3.To rev to 7500 rpm or anything above the rev limiter u have to modify the ecu. You can do everything to the engine but without doing that its all for nothing.
4. Just get a better engine and dont waste your time.
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Rep Power: 351 Originally posted by mootlif3
According to Hollander Interchange manual, 2001+ is using VTEC-E.
According to Hollander Interchange manual, 2001+ is using VTEC-E.
Because I would rather look it up in the same manual that 99% of the mechanics use to get their information than spend 4-9 hours getting the head off and looking at it. Who pee'd in your Cherios this morning anyways?
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Rep Power: 0 The Engine is D16V1. I know I need to reprogram the ECU, or get myself a new one to increase the rev limiter to cut at 7500. What I wanted to learn is how would this effect the life of the engine. VTECs are made for high revs but is mine included to this trend? And no, I can't get my self a new engine. Thats because its almost half the price of the car to get one here. Out of question already.
I just want to learn if I can make the SOHC run like DOHC. Because it seems the only difference is the exhaust valve between two. dual cams can lift the exhaust valve higher at high rpms, but mine can't and I can feel it just after 5900-6000. How would this affect the engine life? Would it be as reliable as a 160HP VTEC, or will it break down after 20k miles?
I want to upgrade my power from 110->140. That would lower my 0-100 under 9secs, and thats enough for me, enough for a more enjoyable driving experience...
I just want to learn if I can make the SOHC run like DOHC. Because it seems the only difference is the exhaust valve between two. dual cams can lift the exhaust valve higher at high rpms, but mine can't and I can feel it just after 5900-6000. How would this affect the engine life? Would it be as reliable as a 160HP VTEC, or will it break down after 20k miles?
I want to upgrade my power from 110->140. That would lower my 0-100 under 9secs, and thats enough for me, enough for a more enjoyable driving experience...
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Rep Power: 340 ok, first off.. where the hell u live? second, sohc vtec models... ALL SOHC models.. with the exception of the ones with the second bank of pistons/cylinders, are for fuel economy not power
thirdly, you can get it to rev up to 7500rpms just gotta go like 75 and drop it into second gear...
that is all
thirdly, you can get it to rev up to 7500rpms just gotta go like 75 and drop it into second gear...
that is all
ROFL pwn3d
Originally posted by mootlif3
Because I would rather look it up in the same manual that 99% of the mechanics use to get their information than spend 4-9 hours getting the head off and looking at it. Who pee'd in your Cherios this morning anyways?
Because I would rather look it up in the same manual that 99% of the mechanics use to get their information than spend 4-9 hours getting the head off and looking at it. Who pee'd in your Cherios this morning anyways?
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Rep Power: 0 revving our motors that high without doing some internal work will almost definitely cause damage. if you want to rev that high, strengthen your internals before you mod the ECU. also, as you have seen, the max power in a D17 (or D16 in your case) occurs slightly after 6000 rpms. the only advantage to revving it higher is to make sure it would stay in VTEC (and drop to max torque) when you shifted. revving beyond 7000 in an unmodded civic will not gain you any power, and will likely cause damage if you don't know what you are doing.
Originally posted by Spider883
2. You do not have VTEC-E that was only on certain 1.5L in the mid 90's.
2. You do not have VTEC-E that was only on certain 1.5L in the mid 90's.
gokhanasan, i don't think any body undering your Q any more.
Last edited by Yoyoio; Mar 17, 2004 at 06:31 PM.
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Rep Power: 289 im not sure if we have a true VTEC-E. heres from a pervious tread.
http://www.7thgencivic.com/forums/sh...ighlight=vtece
http://www.7thgencivic.com/forums/sh...ighlight=vtece
Last edited by mrchowmein; Mar 17, 2004 at 04:56 PM.
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From: Daytona Beach, Florida, US
Rep Power: 351 damnit people.. dont u remember im the first person here that ported the head and had a custom cam made 2 years ago.. i know what im talking about
Originally posted by zen_master
wtf, so we don't have VTEC-E?
it' on many websites.....1.7L vtec-e....blabla...
e stands for economy as is for our slow vics....
wtf, so we don't have VTEC-E?
it' on many websites.....1.7L vtec-e....blabla...
e stands for economy as is for our slow vics....
i m confused
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Rep Power: 0 We have Vtec-e...And I don't care who had port work done first....Not trying to be a ****, but I know a master mechanic that worked 15 years for Honda and I rather take his word for it instead of someone who thinks he know's everything...
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Rep Power: 351 The orginal Vtec-e was a 3 stage vtec.. from idle to 2500 it would only allow 1 intake vavle to open instead of both to save on gas.. the D17A does not have that.. that is very simple to see if the vavle cover is off bc in the D15's which has vtec-e you can plainly see it working. honda now calls it vtec-e as a term for economical version of vtec not what it was orginaly called.
PS: I am also ASE Certified for your info for the past 2 years
PS: I am also ASE Certified for your info for the past 2 years
Smuggling bananas and mexicans all for one low price...
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damn, you know what why dont we stop arguing. We have Vtec and thats the end of it, who really cares if they tached on an -e to the end of it. They shoulda put an S for Slow as far as im concerned..... Spyder bro lets just let this one go and let the boys argue amogst themselves...
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From: Wilder, Kentucky
Rep Power: 0 If he lives where i think he dose. then i don't for the life of me know why he is asking us. i think that the 1.6L VTEC-E is a JDM / EURO thing. i could be wrong. i'll ask rushi-san in my next cam order.
Originally posted by WannaBFast
you can get it to rev up to 7500rpms just gotta go like 75 and drop it into second gear...
that is all
you can get it to rev up to 7500rpms just gotta go like 75 and drop it into second gear...
that is all
Ohh how sadd dude. Stop picking on noobs. At 75 MPH and dropping into second will surely do some damage and still wont' rev to 7500RPM. The dial might jump up that high from the abrupt down shift but it's still not 7500RPM.
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Rep Power: 398 rofl if the needle goes up to 7500 rpms how the hell do you know its not 7500 rpms rofl lolololol silly boy
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From: Hampton, VA
Rep Power: 0 heh, VTEC-s
s=slow
If ya wanna rev higher, build the internals up with high-quality, ballanced parts. Then do some ECU work to bump the rev limiter.... BAM you can now spin up to 8500 rpm.
I'd get a DOHC engine before putting all that work into one of our SOHC cars. My guess is that you'd run out of power due to restrictive exhaust valve movement (VTEC is intake side only on the D17A2 from what I've read) long before you hit 8500.
Ya may want to do with a more beefy cam while you've got it apart, and make sure you've got some nice strong valve springs, valve float is a beeotch.
s=slow
If ya wanna rev higher, build the internals up with high-quality, ballanced parts. Then do some ECU work to bump the rev limiter.... BAM you can now spin up to 8500 rpm.
I'd get a DOHC engine before putting all that work into one of our SOHC cars. My guess is that you'd run out of power due to restrictive exhaust valve movement (VTEC is intake side only on the D17A2 from what I've read) long before you hit 8500.
Ya may want to do with a more beefy cam while you've got it apart, and make sure you've got some nice strong valve springs, valve float is a beeotch.
Originally posted by TheSmuggler
rofl if the needle goes up to 7500 rpms how the hell do you know its not 7500 rpms rofl lolololol silly boy
rofl if the needle goes up to 7500 rpms how the hell do you know its not 7500 rpms rofl lolololol silly boy
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Rep Power: 0 It isnt VTEC-E it is the same VTEC that is on the 1.7L EX. The D16V1 is what is in my EP2 and VTEC engages at 2500 to 3000 RPM
As far as I can make out VTEC-E was 3 stage an had 2 solenoids, my car (D16V1) has only 1 this makes it 2 stage SOHC VTEC. EX owners will be the same having 1 solenoid.
I think our engine internals will take 7500RPM ok but you will definately need better airflow to give you any power worth going up there for cos they get a bit out of breath above 5500RPM.
D16V1 is really just a de-stroked 1.7L EX engine. Same Inlet Mani, Exhaust Header/Cat setup and head.
As far as I can make out VTEC-E was 3 stage an had 2 solenoids, my car (D16V1) has only 1 this makes it 2 stage SOHC VTEC. EX owners will be the same having 1 solenoid.
I think our engine internals will take 7500RPM ok but you will definately need better airflow to give you any power worth going up there for cos they get a bit out of breath above 5500RPM.
D16V1 is really just a de-stroked 1.7L EX engine. Same Inlet Mani, Exhaust Header/Cat setup and head.
