Thread: VVL vs. T25 question

I have experience with this. A stock cam b13 or nx with a t25 setup on 8psi on a basic tune will barely creep away from a stock cam VE once you hit past 100mph. Other than that, its almost side by side. N1 cam VE, all over for the turbo car.

Now s4's in the turbo b13 or nx. All over for the VE even with n1 cams. It wont matter. The ve would have to have quite a bit more bolt ons to even come close and even then a t25 setup on 8-10 psi with s4's will trap 110 in the 1/4. At least mine did. Not many ve's doing that. So top end the turbo car will walk away.

Ive got a vid of me running my buddies nx when I had my stock cam VE in my car. I had a passenger in my car and he was by himself so our cars at that point were almost identical in weight. Once i hit 4th he started to creep away and put a car on me decently quick. His was a t25 setup, calum basic, 8psi of boost, jdm motor.

A stock cam basic VE should trap around 100-102mph. A simple basic t25 setup in a b13 should trap around 100-104mph dependant on weight. N1 cam VE should be trapping in the 102-105mph range dependant on weight.

10 years ago vvl motors were harder to come by not as many in the junk yard yet. prices came down even more when the 240 crowd started doing vvl head swaps. I can pick up a motor for half of what one cost 10 years ago.

The one with more area under the [power] curve between any approximately 2.5k rpm spread will win an acceleration contest. That would more than likely be the T25 setup.

I always said a T25 car will kill a 2liter VE car. I still believe they can. Gio is one of the guys who showed what a T25 can do. He is probably the only guy making that much whp/wtq. The rest of the T25 crowd is scared to push past 10psi because they read it was not safe.

We used to run around open boost on the baby turbos. No they didn't pop and no we didn't melt pistons. Till they start cranking the boost, I think my VE would smack up more than a few T25 cars.

Bes, im sure your car would smack up on many basic turbo b13's. S4 cams though and its all over for you. lol.

I wasnt afraid to turn my t25 setup to the max, which is why I melted pistons. They didnt like 19psi spikes from a t25 and holding 14-15psi. Not with s4 cams anyways. Optimal boost was about 12psi with s4's. Plenty of power, safe, and reliable.

The question as proposed was a basic bolt-on VE versus a typical T25 setup, which is why I'm giving the nod to the T25.

Yeah exactly. The t25 will out run the ve. But in an autox I would say the ve might have a little edge, the t25 might almost have a little too much tq

You would brother, I am 100% positive of it.

Everyone is throwing in oh but cams on a T25, sure that is fine and grand but the topic that I was led to believe is this....

Stock internal VE engine vs Stock internal T25 DE engine.



For autocross, that depends on the gearing and the track. For drag racing, that depends on other attributes that only the numbers can really prove. (Thank you, cory, and others for that information)

Breather mods are the same on both cars, stock cams on a DE (which suck, they are small and run out of breath compared to a VE one the big cams open up, the turbo car is toast for that minimal amount of time)

How about some guys take the time and read this entire post over on Gnet.

http://www.g20.net/forum/showthread.php?t=86386

Stock ves do not trap over 100mph. Stock de w t25 does! End of thread.

I had to push 212whp w my ve to trap 106-7mph. My t25 set up w stock boost and tmic went 108mph.......

Stock ves do not trap over 100mph. Stock de w t25 does! End of thread.

I had to push 212whp w my ve to trap 106-7mph. My t25 set up w stock boost and tmic went 108mph.......