Thread: Think I went with too big of a turbo...

Old vid.
Jose's Dyno run - YouTube

Amen!!!

I would love to see the dyno graphs, the only thing I would ask for is the specs of the setup. Non of the I don't believe it BS. I believe you guys are making big numbers (even as shown in the video below), I'm just trying to see what the secret is.

I need to get a passenger to hold the camera while I drive. Also I need to stop being lazy and hook up the Beltronix accelerometer and find a straight road.



Impressive numbers and a great vid!

That is pretty good power. Log manifold making decent numbers. But I made pretty similar numbers on my log manifold with a smaller turbo.

He's got a 60-1, which we made 421whp on 13psi up here with VVL on a tubular with a .63 housing. It has a big turbine, which I believe is the biggest factor to consider when using a log manifold. the 60-1 is good for nearly 100whp more on the same boost as my 30r.

In the posts for that video, RB even stated that the log was killing the power. Manny ran a similar size turbo and 2psi more boost, made 60whp more. Just food for thought.

I don't mean to be confrontational, really. But I see some numbers thrown around that just don't add up. My friend with an S2000 with full-race setup on a 35r made high 300s on 12-14psi. I don't see a log manifold making high 300s. But you guys are right, there are a lot of different things to consider.

He made peak power @ 7200 on stock VE cams. JWT ecu with a AFC on it. It's a old vid.

SR20VE+T on the Dyno - YouTube

That is more of what I expect on the setup. Notice how torque just keeps dropping. I'm using a much larger turbo, but see the same thing with the SR16 cams. They need a much larger turbo to breathe. 270whp abouts. And a big dip after 5k where I am guessing the VVL switched?

I remember seeing those videos years ago, actually was the first one to post asking questions about it. Not sure of the whole setup, but I am guessing those 1.6 cams made there way onto the 60-1 setup as well.

here's a link
http://www.youtube.com/watch?v=VjGb_D6yiEY

This was on VET cams and 15psi (13psi sea level)

I broke link on purpose because of the STI pull on the freeway.

Do you remember what was the VVL engagement point?

No it's been too long. could have been 5k or 4k.

Did a run with the Beltronics FX2 Accelerometer, a few forum members I know from Mexico use these since they don't have access to a 1/4 miles track. Reading reviews of it, they seem fairly accurate too, but as always take with a grain of salt.

First the specs of the car:
Car Weight: ~3250lbs (with driver and tools/turbo weight)
Cd: 0.30
CdA: 6.43 (this number encompasses frontal area and drag (Cd))

This was with a pretty bad launch and wheel hp as usual in first gear.
Approx WHP: 220 @ 61mph (which is around 7k RPM)
0-60: 6.38sec
1/8: 9.83sec / 75mph

I have never had luck getting the 1/4 mile times, simply because it's hard to do that without breaking the speed limit.