Thread: Vtec killer vs Aftermarket cams vvl

Yeah, you want to keep the VVL then, as the low/high cam setup is what allows it to idle nicely.

We have used several engine setup with the "VVL killer" cams. We tend to use these more in a higher horsepower, more abuse engines. It completely eliminates the "VVL" lobe in the cams. The specifications on the cams we use cannot be shared unfortunately, but can tell you this much, they can idle like stock. The benefits in the bigger motor applications is that it lightens up the drivetrain, and you dont get the oil pressure drop like with the "VVL"

We r/d these cams and gave Kelford the specs to make them.

We have also recently made a ton of the "shimless" valves for the VE head. This is the way to go to eliminate any shim "spitting" problem also.

link to purchase?

^Thanks for co-signing on what the OP was asking. So the idea was to lighten of the drivetrain for longevity? Did this hurt the low end, but increase top end with this design?

P.S. I just noticed this is in the turbo section. Are you referring to turbo only and would these cams best the Kelford-T's in your opinion?

The idea is to get rid of a heavy, limited valve train.

When that land speed record engine build detailed that, I thought it was a wonderful idea and it still is.

VVL valve train is heavy and without doing the mundane task of clearing every rocker with big cams, doing a delete is a grand idea.

It would not hurt low end anymore than running a single cam profile. But if it lightens the valvetrain, no it will not hurt low end. The question you asked can yield two answers (or more) depending on what answers you are looking for, @MR-4Door-SR20DET

The cam profiles as far as lift and duration dont change. All this is eliminates the center lobe to reduce the mass of rotation. In return, you have a better for response powerband and lighter valvetrain. This also aids in helping reduce oil pressure issues when the VVL is activated. Most dont realize how VVL or VTEC really works . I guess we have Fast and Furious to thank for that one haha..

I know exactly how it works! Hopes and dreams! 36 shifts and 5 minutes later... I do a 10 second 1/4mile pass.

Lol.

Only downside is always running lower oil pressure.

Thats not the only downside. The cams are not designed to have the big lobes on all the time. Plus they will not even stay engaged at idle because the oil pressure is too low. You will hear a constant metalic slapping sound of the rockers slapping the cam lobes because the big lobe pad keeps unlocking. It will also throw shims out in the process, it will idle like complete crap again because of the valve timing and so on.

All normal cams are not meant to run on the high lobe all the time. Its a waste and only negative will result. I know this from personal experience when we first got Calums realtime w/ vvl trigger and there was an issue and it was keeping the vvl on at all times. Took us a minute to figure out why it didnt want to idle and was making that god awful noise under the valve cover and had to pop the cover to put shims back in place that had popped out because of it.

So heed my warning.....dont engage the vvl all the time.