So Im thinking I may have rushed teh decision to go VTEC...maybe..maybe not? Damn I dont know!

Im one confused person! The thing is...I will lose ALOT of midrange (3000-6000 RPMs)..I know this for a fact! And Im talking about losing 10+ WHP and 15+ TQ. Once VTEC kicks in at 6000 (around) then the power should start to pass my current..and hopefully gain 25-30 WHP by around 7800 RPMs. So basically, my current setup is more suited for pulling tree stumps out of the ground ...while with the VTEC it will be more of a racer..I mean who the hell races between 3000-6000 RPMs? The only time Ill even be in that range is a bit in 1st gear and for a split second in 2nd gear...3rd gear and up will all fall above 6000 RPMs when I shift.
Also, Ill have 30+ MPG and a stock idle to boot.

The other thought that has crossed my mind would be to port and polish the B20 head and larger intake valves..which would give more midrange (we're talking 160+TQ) and possibly 185-190 PEAK WHP. It would still idle like a bitch and get shitty gas milage though...both of which SUCK.


[Modified by HX_Guy, 7:38 AM 12/17/2001]

 

Are you planning on going with ITR cams? You should still have a decent midrange with your High compression and displacement, not like now but still pretty good.

 

I plan on JUN2/ITR setup or the Skunk2 Stage 1 cams..nothing to wild but Id still like at least 200 WHP.

 

MIDRANGE AIN'T THAT BAD...i'd kill to have that midrange!
gets you to peak hp faster!

 

Hey Hx_guy,

Wow...you're switching to VTEC after all that work on the B20? Man...you're going to miss the torque. Will you be going full B18C/5 or CR-VTEC?

 

CRVTEC man..of course.

 

how would adding a VTEC head make you loose the torque from 3000-6000rpm?

would it be the cam profile of a stock VTEC cam? i would think that you might accually gain a little more low-end torque because the non-VTEC lobes on the VTEC cams arent as agressive and dont need that much air/velocity to make power?......comparing them to your crower 404's. and certianly the VTEC head flows much better than a non-VTEC head.

when i added my crower 403's i noticed a drop in power from idle-3500rpm but after that it was all good........everyone told me it was because of the higher lift of the cams which makes sense.........

?

 

1: i hate to quote from endyn but rpm = ruins peoples motors. r/s ration isnt quite as good as in b16a/b18c.

2: tourque rules

3:"who the hell races between 3000-6000 RPMs?" you do if thats your redline.... speed matters not rpms

4:"VTEC it will be more of a racer" ls1 and lt1 engines dont have high redlines but are definitly race engines and have a power curve more like your engine than that of a vtec counterpart.

and do you really want to rev the crap outa your engine all the time to make power?

unless you sell your head cams and stuff to me stay wit what you got. thats just my biased uneducated opinion

one quick q: whats your cr gonna be with a vtec head, does it normally go up, somethin tells me it does. just cause you got like 11 somethin cr right


[Modified by JCushing, 9:17 PM 12/17/2001]

 

Umm, explain 30mpg with the VTEC cams? My car's stock with VTEC and I've gotten 30mpg maybe two or three times in the 2 yrs I've owned my car. Sure I drive the hell out of it sometimes, but I'm also very conservative somtimes too. I usually get about 22mpg city and 25mpg highway. I don't know where you go the crazy idea of good gas mileage.

 

1) rpm does ruin people's motor's...but hx guy's strengthened internals negates this. also the r/s ratio is insignificantly worse than a b18c1.

2) torque does rule, but so does an extra 25 peak hp.

3) his redline is gonna be 8.4k?...if he makes power up there, he'll be racing up there.

4) his b20 monster isnt an ls1, its a honda...it needs to rev to achieve its max hp potential.

stock idle, +25 peak hp, questionable losses down low...

(go vtec!)

Tom

 

That's why I ask him whether he's going full B18C/5. If he does, he will lose the torque. If he goes CR-VTEC, which he answer afterwards, then he will not.

 

With 178k on your car, 30mph might be out of the ? (depends on the health of the motor)

But a healthy VTEC motor should be able to hit 30mpg no prob. Highway driving.

Tom

 

his engine is in the much more lighter Civic HX....your teg is heavier

 

I can usually scam about 30mpg out of my gsr drivin around town. once going to myrtle beach I had CC on the whole time and pulled 35+ out of it! other than that my average mpg around town is 27-31 depending on how much speeding I do.

 

He will one day, he just wants to toy around with this for now.

 

You guys are really starting to know me too well

 

1: i hate to quote from endyn but rpm = ruins peoples motors. r/s ration isnt quite as good as in b16a/b18c.

That is true, but its not liek now Im revving to 6000. With the non-VTEC Crower cams, I still have to rev to 7800-7900 to get the most out of them, with VTEC Ill probably rev 500 RPMs higher.

2: tourque rules

Yes it does. And it would rule more (in racing) if that torque was more around 6500 then at 4800

3:"who the hell races between 3000-6000 RPMs?" you do if thats your redline.... speed matters not rpms

Agreed. Unfortunately, my redline is not 6000. If I made my peak HP at 6000...Id be happy...but I make my peak power at 7400, therefore have to rev 7800-7900 and when I shift it puts me past all my torque.

4:"VTEC it will be more of a racer" ls1 and lt1 engines dont have high redlines but are definitly race engines and have a power curve more like your engine than that of a vtec counterpart.


True, they dont...but they do make their power earlier so they dont have to rev the **** out of them.

and do you really want to rev the crap outa your engine all the time to make power?

See #1

one quick q: whats your cr gonna be with a vtec head, does it normally go up, somethin tells me it does. just cause you got like 11 somethin cr right

Yes, it will go from 11.4:1 to 11.9:1




[Modified by HX_Guy, 7:08 AM 12/18/2001]

 

The pull of the darkside is strong!!!

Tom

 

Then go buy one...

 

realteggirl is soooooo hot!

 

i know im going to get flamed for this but here goes,

imo vtec isn't all its cracked up to be, i believe it was basicly made to give power with better emmisions. vtec seems to make everything more complicated, also vtec parts are more expensive, i believe most vtec cams are alsmost twice as expensive as non-vtec ones

if you are looking for 200whp, port that head, get skunk2 im, tb, and jdm exaust (i dont remember if you have any of these or not) and you should make that goal easy, honestly thats what i'm shooting for

so imo i would stay with what you got f*#k vtec, do a little more work and you have a kick a$$ non-vtec

 

Well that is true...basically VTEC was invented to have a good idle and good gas milage...whil still being able to have great power and run HUGE cams!
I believe a non-VTEC engine can make just as good of power..with port and polished head, bigger intake valves, an even bigger cams (try and run 12.5mm lift cams in a non-VTEC engine)...but the car will not idle under 3000 RPMs probably.

So for a straight race car..I agree..VTEC isnt needed..but when you want a split personality kind of car..one that gets good gas milage, has a good idle yet can still use 12.5mm cams and make gobs of power..VTEC is the way to go.

 

IF VTEC is so hot, why do 99.9% of all the top dragers disengage their VTECS. Please name one VTEC motor that is running in the 9's? VTECS are for women. Don't do it man, the look those VTEC guys give me after I serve their *** on 5+ carlengths is classic. Your shortblock is awesome, all you need is a good head and some good headers and good computer. Your cams are always gonna idle like ****, but who cares when your at 200whp?

 

Sorry Halo..Ill ahve to disagrree and agree here.


For one..I said the exact same thing..for all out racing (non street driven)..VTEC is NOT needed...I stated that as well.

As for the "Your cams are always gonna idle like ****, but who cares when your at 200whp? "
...I care...I dont know how long youve had your setup..but mine got extremely annoying! the whole car shaking and rattling..all loud and crap...couldnt stand it.
Sure it would be nice to have 200 WHP...but why not have 210+ WHP and have a good idle as well?

 

If your car isnt an all out race car, it might get annoying having an idle that shakes the entire car.

(although i think it might be fun for a little while...)

VTEC gives the best of both worlds, for cars that have to be daily driven

Tom