Thread: Cams for Ve-t

I am posting this for a friend. I have tried to search for answer, but not having much luck.

The car is a 93 nx with a ve. We have added a t25 running 6lbs boost Meth injection, jwt ve-t program. 2.5in vrs exhaust

Dynoed the car couple of weeks ago put down 210whp 198tq

Since then we have redone the charge pipes to clean them up. Reducing the amount of couplers. No major changes though.

He wants to add n1 cams thinking that it will help the car make more power without adding more boost. Is this correct? Or is it a waste of money?

Thanks

With a T-25 tell him to keep the 2.0 cams. They will perform the best.

n1's will not work with that small of a turbo. the stock cams will be best suited for a t25. 20v's may also work well if you can find a set.

210 is low for that setup what were the afr's like and how much water/meth was being added. at 6psi you should not need any.

the 2.0 cams work great ...thier might be more hidding in the exhaust , n/a ve guys run 3"

Okay stock cams it is.
I agree. The power did seem a little low. I was guessing the low-mid 230's at least. The meth is a brand new AEM kit with its lowest jetting. We also had 5 gallons of 100 octane race gas. (we just had a really bad tank of 93) Timing was @19 afr stayed below 12:1

I don't mean to be rude, but I hear a lot of opinion with no truth in testing in this thread. Is there anyone here who has even documented any dyno results between cams besides myself and JP?

On that small of a turbo, the VET cams will work the best. Hands down. I know from direct experience the 2.0ve vs the vet cams. The 2.0ve cams work best with 400+whp turbos. The vet will work best under high backpressure situations: ie, log manifolds, restirctive exhaust housings, turbos, etc.

The 1.6L cams have yet to be tested and documented in a drop-in on a mid frame turbo car. But don't worry, I'll be testing them soon too.

On any turbo in a T2 flange, the VET cams will prevent reversion and make a ton more power. I made almost 100whp on my old setup by DROPPING in the VET cams. Once I went tubular I gained about 25lbft of torque going to the 2.0 cams. HP measurements on the motor were skewed from some engine issues, but the tq increase shows that the 2.0ve cams will perform better on the tubular manifold.

The 80* overlap the N1 cams have will not make any power over what your friend is at now. He is likely experiencing reversion issues, or just a setup that needs massaging.

Defenetly agree , I was jut thinking the VE-T cams might be hard to come by , and he already had the 20ve ones .....

Thank you for the replys. Coheed, I appreciate your candor. Aaron is willing to try something new. We could test them if you have some input for what you are looking for?

He asks what about cam gears on the stock VE cams or n1 and cam gears to get rid of the reversion or does that not work?

If thats just a really bad path and I dont want to go there.. Where would one look for ve-t cams?

You need to get the overlap down to under 30* if running a small T25 or T28. The smaller exhaust valves from the VE will also slow the flow of exhaust gas, making reversion even more pronounced. This is why the VE loves big turbos.

The cam gears would need to take out about 50* from the N1 cams. This is not going to work.

Best bet, get the biggest lift, lowest duration cams you can find. The smaller turbo will spool faster, the power will be more broad, and the car will run great. If your friend is serious about getting VET cams, I have a set. You can PM me from there.

I really think that unless he is shooting for over 400whp, the VET cams are going to be the best choice for that car. What are some other details on the setup? Also, does he notice a drop in power when switching the cams? Or does he gain power? How about switching the intake only? If that seems to help power, then reversion is an issue that will have to be addressed.