Nissan's version of "Vtec"?

[KAS13715]

I was told Nissan has a V-tec, what motors have it, my CRX has a B16 and when that Variable Valve Timing kicks in at 5 grand, man its a wonderful feeling in the seat and in ur ears.

[SeVa-S13]

None available in america.

[HashiriyaS14]

It's called Neo VVL.

SR20VE has it, along with RB25DET Neo-6.

[CrimsonQ]

G50 has it till 95 if Im right?

[Red coupe]

It's called Neo VVL.

SR20VE has it, along with RB25DET Neo-6.

The later longitudinal SR20DETs had it too no? The ones that came out of later S15s? Though Ive never seen them written as SR20VET so that kind of makes me wonder...I thought thats what the notch in the "notch tops" was from?

[Jesda]

G50 has variable valve timing but not variable lift, if I understand correctly.

[Fiat invented VVT. GM invented VVL.]

[OriginalWheelman]

G50 has variable valve timing but not variable lift, if I understand correctly.

[Fiat invented VVT. GM invented VVL.]

Didn't Fiat invent OHC? I know they were one of the first...

[s0m3th1ngAZ]

ga16de's have a variable exhaust cam i think

[PantherRacer]

The later longitudinal SR20DETs had it too no? The ones that came out of later S15s? Though Ive never seen them written as SR20VET so that kind of makes me wonder...I thought thats what the notch in the "notch tops" was from?

S14 and S15 notchtops.

[Dattebayo]

S14 and S15 "notch"tops had variable timing, not variable lift. Different intake direction and intake head port from S13.

Annoying to work on, too.

[nametakennow]

The QR has a simplified NEO VVL. The late FWD SRs use roller-rockers (variable lift). I suspect S15s also had variable lift. The GTi-R SR20DET has some sort of ridiculous mechanical valvetrain that may have included aspects of VVL, though the specifics of it I'm not certain of.

Only the SR20VE/VET has the "kicks your *** at X rpm" aspect like VTEC. All the other systems are more subtle. However that's not to say that RR SRs like mine don't have a noticeable difference when the variable lift is in effect, it's just not monstrous.

[hsckris]

None available in america.

i think what you mean is none available on 4cyl in america that people readily modify, like say a 240. of course that would ignore the QR.

many many other nissan vehicles have variable valve timing, including my nissan frontier.

[Mr1der]

I was told Nissan has a V-tec, what motors have it, my CRX has a B16 and when that Variable Valve Timing kicks in at 5 grand, man its a wonderful feeling in the seat and in ur ears.

VTEC is a different beast from VVT.

iVTEC has VVT on it however.

VTEC alters the lift of the intake valves instead of retarding or advancing the timing...it offers economy AND decent performance in the same motor. It just doesn't run on the extra cam lobe all the time thus they don't do much until you engage the VTEC.

[USsil80]

the sr20forum guys are making good power adding a turbo to these motor and making close to and over 200whp on just some cam/valve spring changes... some guys putting the head on rwd sr blocks... fun combo IMHO

[Black95s14]

First off its damn valve timing...Not a turbo!! it gains maybe 8 hp tops...but with good ol' Honda torque that translates into.....Loud sounds and no speed

Yes Nissan has it....Called VVTBut we nissan fans understand it and dont go...

Go back to your HonDuh forums

[Mr1der]

no seriously.

VTEC is different from VVT....

please stop saying they're the same.

Toyota also uses a VVT system. They call theirs VVTi

[NSR_s30]

It's called Neo VVL.

SR20VE has it, along with RB25DET Neo-6.

[USsil80]

First off its damn valve timing...Not a turbo!! it gains maybe 8 hp tops...but with good ol' Honda torque that translates into.....Loud sounds and no speed

Yes Nissan has it....Called VVTBut we nissan fans understand it and dont go...

Go back to your HonDuh forums

the sr20ve is a awsome motor.... that makes good power..look around you be suprisied

[OriginalWheelman]

Go back to your HonDuh forums

Stop being a jerk. Perhaps he has never been in a fast car and has no comparison. Perspective is reality, unfoutunately.

The SR16VE had the HP/Displacement record untill the FJ20 (IIRC).

With that said, there is more to life than VTEC. VTEC is to compensate, to find the "happy medium" for a street car. You haver to remeber that Honda is all about efficency. Take a look at the rear bumper of a Nissan and you can tell saving fuel was not one of thier priorites.

[Dattebayo]

The SR16VE had the HP/Displacement record untill the FJ20 (IIRC).

Untill? The SR16 was a later production motor than the FJ20. Dude, FJ's are from the early 80's...

[brisknfade]

I think he meant F20's from S2000's.

[OriginalWheelman]

I think he meant F20's from S2000's.

Yeah sorry.

[Mr1der]

I'm feeling good tonight, so we're not gonna beat you for confusing the greatest 4 cylinder ever with a Honda

[PoorManQ45]

no seriously.

VTEC is different from VVT....

please stop saying they're the same.

Essentially they achieve the same thing.

Increasing valve lift allows more air to flow per a given time. A la VTEC

Increasing the length of time that the valve is open allows more air to flow through per valve opening. A la VVT

Two ways to achive the same thing

[Mr1der]

then you have the creature known as iVTEC where the combine the two....

I believe Ferrari has a weird cam system where the whole cam changes position to alter both exhaust and intake lift and duration...not really sure what the put this on though

[Urabus GodofTraction]

valves? cams?

noobs...

For a productive comment, just decode the acronyms.VTEC: Variable valve Timing and lift Electronic ControlVVT: Variable valve timingNeo VVL: Nissan Ecology Oriented Variable Valve Lift and TimingVVTi: Variable Valve Timing with intelligence

This list goes on. BMW has VANOS, Porsche; VarioCam

Different enough to get around patent laws.
Modified by charlieo at 11:33 PM 12/7/2006

[Mr1der]

don't make me grind out your water jackets and weld them back!

[honda_killer240]

most of the new nissan motors have cvcts (continues veritable valve timing) that from what i under stand does the same thing vtec does only it is always there not at like 4 or 5 grand as vtec is

[nametakennow]

I can't believe I forgot the SR16VE.

Anyway, as far as guys having a lot of luck with turbo'd SR20VEs... I suppose plenty do, but in all honesty, I think I'd rather have a low compression SR with a simpler head (or a GTi-R setup) than a VET. That'd be a very high-stress engine.

[MinisterofDOOM]

For a productive comment, just decode the acronyms.VTEC: Variable valve Timing and lift Electronic ControlVVT: Variable valve timingNeo VVL: Nissan Ecology Oriented Variable Valve Lift and TimingVVTi: Variable Valve Timing with intelligence

This list goes on...

My favorite is MIVEC becuase it's so stupid. Mitsubishi Innovative Valve timing Electronics Control. Yeah. Thanks for telling us it's innovative. We might not have noticed otherwise. At least the other acronyms actually MEAN something; Mitsu's just states the obvious. It sounds like they thought of "MIVEC" and then invented a name to fit the acronym.

Also, Nissan's is CVTCS, not CVCTS.Continuously Variable Valve Timing Control System.As 1der has already stated, CVTCS is not the same as VTEC, since CVTCS doesn't include variable valve LIFT. VTEC does.