supernova1400

whens does vtec kick in on a D16Y8 sohc vtec motor?

makaveli284

You should be able to feel it, or atleast tell by engine sound. Its at around 4500rpm. Feel Free To Correct Me If I'm Wrong.

eg6ajk

VTEC depends on throttle position (= load) - so it varies but anywhere from 4800-5300rpm (lower for WOT and higher for cruising)

Neptune

Wrong. Not flaming but in a SOHC engine you cnnot tell at all when vtec kicks in. there is no difference in engine sound or g force. Pretty much you an only tell by how fast the rpms fly up.

MikeMAN

wrong.get a CAI or remove the stock airbox from ur intake. u WILL hear the sound

(neptune, I assume u have a bone stock car )


[Modified by MikeMAN, 10:46 AM 3/4/2003]

WongFeihung

Wrong. Not flaming but in a SOHC engine you cnnot tell at all when vtec kicks in. there is no difference in engine sound or g force. Pretty much you an only tell by how fast the rpms fly up.[/QUOTE]

you sure? Cause, i know you cannot feel vtec in a sohc engine, but I do hear a difference in the sound.

blackex187

4400 rpm , you can't hear or feel a difference, but if you watch the tach you can see a slight change. why does it matter though

WongFeihung

yea, honestly it doesnt matter lol. vtec in a sohc....

HondaPartsHero

you can hear and slightly feel vtec in a Sohc Vtec engine. I have found using my fields vtec controller on my Z6 i can hear it a lot better when i move it higher in the RPM band(its really loud at 6000+ rpms). And i can really hear it in 1st, 3rd and 4th (never hit it in 5th). I have mine at 5000, but i believe the Y8 P2P ecu hits it at 5200, but i could be wrong. btw not to knock anyone but the sohc vtec engines are very capable of making power, they just get kicked around because i wouldn't want an N/A sohc vtec (bolt on's only) in a coupe i would want to swap in a b series because of the torque needed to move the weight of a coupe. In comparison for the money i could spend on putting a b16a in my car, i could put the same money into my Z6 and make it smoke a b series swap without even using forced induction or nitrous. just my .02


[Modified by yebabee, 9:03 AM 3/4/2003]

nsxmatt

My wifes 00 Civic ex has a very noticeable vtec crossover sound around 5300 rpm or so. All she has is a intake.

makaveli284

hahaha yea some say u can n some say you cant. But me, i think i do feel it, and i can definitly hear it. . . mite b cuz dats da only thing i look forward to hahaha

tek_civic

well i could hear it when it was stock as a little high pitched whistle but since i got all my mods(i/h/e, testpipe, gutted) i chouldn't hear the whirr anymore so i put in a vtec activation light that is hooked up to the vtec solonoid so it turns on when vtec kicks in, pretty handy for learning your engine and tranny.