Thread: VET Cams

I wish someone here had some kind of data on the big lobe to see what the difference is. That looks like a healthy bump in duration. It makes you wonder why Nissan would even spend the time to make the lobe different. I will do this: Dyno the new manifold with the VET cams, then switch the intake cam and dyno again to see any gains if any. It would be crazy if this combo netted good power all the way around, because I have both grinds here.

The weird part is that I have thought about doing a hybrid cam swap in this motor for a while now, this seems like a sign from god lol.

yeah you read my part wrong

i said i assume the high lobe for the vet cams are the same high lobe as on the 20v cams. ie. 180 deg 11.3mm lift or whatever it is. The reason being that nissan just would have changed the programing on their cnc cam cutter for the low lobe and just not finish of the whole rocker arm set up its the most cost effective way for them. However this is just my speculation, just like miko speculated that the high lobes are not ment to be used, they are just some profile that never existed.

what i am saying is if you ran the vet intake cam with the 20v high lobe (which i am speculating is on the 20vet cams) then of course you might loose power as the cams are not ment for each other. Therefore i am saying he cant just speculate that the high lobes are some "not ment to be used profile" because he boy switched them and lost power.

Look all I said was the VET cam is not designed to be used.

It was tested by Clark Steppler at JWT and lost power when they switched the exhaust cam to the high lobe and that is with VET cams on the intake and the exhaust.

So no speculation on my part.

Now, all I said was if I was going to turbo a SR20VE I would run 20V cams.

You read it 100% right.

Ah, but that's not just for the exhaust cam, is it? I found the same results when I changed from both VE cams to both VET cams - flow decreased in the 4000-6000rpm range. VE in & VET ex gave better results than either.

Hence my question about the size of the VET exhaust cam's high lobe - with that variable known, we could well find a better intake cam to match it than a 20VE; and possibly a good start point for cam timing.




It doesn't appear that anyone who has, is willing to share the info. I might swap my exhaust cam out and get Kelford or Franklin to measure it up.




Why thankyou

More-faster,

I am not talking about a SR20VE cam, I am talking about a SR20VE 20V cam.

Also, you were running the low lobe on the exhaust side when did this test, So when you went to the standard VE cam which is bigger than the VET intake cam, you of course will make more HP.

The VET Ex high lobe was not designed to be used it will lose HP when switche to the high side.

As we know the SR20VE cam which is about = to a JWT S4 cam is a great cam to be used, guys here in Miami clear 500 WHP between 20-24 PSI of boost.

Ive got a pair of Genuine VET cams here.

IM happy to send them away to get some publicised numbers on them.


The duration on the VET exhaust high cam looks extremely long. Too long for my personal liking of cams that ive seen. The ramprate by eye is huge, almost a complete drop, and if the rocker ratio still reflects this sort of valve behaviour - to me from my background of learning it wouldnt help with exhaust gas flow to keep the turbo spooling properly. It would be very on/off.

But as they say - assuming makes an arse out of you and me.

I still can't wait to see it. I don't notice a difference when I switch the ex cam. I don't notice a drop in power or a gain. The dyno will measure better than me. Def get some data if you can please. Then post the data here so we can make sense of this mystery.

Well if you have the VET cams and have switched them already all you need now is some cash to waste, put it on the dyno and switch over the exhaust cam.

The we will know.

My bad I see what you were saying, I didn't realise duration would be so large on vet ex high lobe.