VTEC engagement on RSX-S

RSXSLVR79 · Post by **RSXSLVR79** » Sun Sep 23, 2007 5:30 am

What RPM's does VTEC engage on a K20Z2? I reved my motor to about 6k and didn't hear VTEC-is it quiet?

My VTEC engagement on my H22A is 5k and that is LOUD!

daesleeper · Post by **daesleeper** » Sun Sep 23, 2007 6:19 am

5200-5400ish?

b18-mike · Post by **b18-mike** » Sun Sep 23, 2007 7:24 am

vtec only engages on one of the cams, and it is throttle sensitive.. only activates at a certain percentage of throttle... cant remember exactly the percentage...

Silver Knight · Post by **Silver Knight** » Sun Sep 23, 2007 4:21 pm

RSXSLVR79;68929 wrote:What RPM's does VTEC engage on a K20Z2? I reved my motor to about 6k and didn't hear VTEC-is it quiet?

My VTEC engagement on my H22A is 5k and that is LOUD!

the difference between i-VTEC and VTEC is that i-VTEC has a really smooth crossover so its not going to be as noticeable as the regular VTEC crossover that your used to hearing in the B or H series. The K series motors have roller rockers added to their valvetrain and just like stated before, the intake cam only has two lobes, one small and one large, and there is no VTEC on the exhaust side i believe. so in essence its supposed to have the smooth transitional crossover of a D series but perform just like a B. The K series motors are the only motors that have the best of both the D and B series worlds! :w00t2:

and you say you "revved your motor to 6k and didn't hear it." If you are lets say sitting at a light and you rev your motor to lets say 6500 rpms, you will not hear a crossover. the car must be under load in order for it to actually work.

hoped this help Eric.

RSXSLVR79 · Post by **RSXSLVR79** » Sun Sep 23, 2007 4:28 pm

No, i reved up to 6k while driving it, not while stopped. I mean i feal the power, but i just dont hear the vtec.

Spork · Post by **Spork** » Sun Sep 23, 2007 5:31 pm

RSXSLVR79;68969 wrote:I mean i feal the power, but i just dont hear the vtec.

thank you, now look down...

RSX-S HOTTIE · Post by **RSX-S HOTTIE** » Sun Sep 23, 2007 6:13 pm

RSXSLVR79;68969 wrote:No, i reved up to 6k while driving it, not while stopped. I mean i feal the power, but i just dont hear the vtec.

do you have enough oil in your car? just curious.

allex on heather sn

tyler7 · Post by **tyler7** » Sun Sep 23, 2007 10:36 pm

ok, if its an k20a2 then you have vtec on both cams and if you have a k20a3 (base rsx or si) then you only have it on your intake cam. is your rsx stock, if so then just get i/e and you will hear it just fine but either way you should still hear it.

N2HIFI · Post by **N2HIFI** » Sun Sep 23, 2007 10:43 pm

nope you wont hear it because its designs not to be heard, also unless you have a intake you wont hear it because the stock airbox is designed to silence intake noise (where you mainly hear vtec from)

chris

Spork · Post by **Spork** » Sun Sep 23, 2007 11:41 pm

tyler7;69021 wrote:ok, if its an k20a2 then you have vtec on both cams and if you have a k20a3 (base rsx or si) then you only have it on your intake cam. is your rsx stock, if so then just get i/e and you will hear it just fine but either way you should still hear it.

RSXSLVR79;68929 wrote:What RPM's does VTEC engage on a K20Z2? I reved my motor to about 6k and didn't hear VTEC-is it quiet?

My VTEC engagement on my H22A is 5k and that is LOUD!

I hope he doesn't have a K20Z2...