Coheed's Posts

I think for under 400whp the DE and the VVL make about the same power per psi. Once you step up to the larger frame T3, then you start seeing the difference.

If anyone has a VET dyno with a disco ...

I built the super sentra while going to school and working 1 ft and a pt job. 18-20 credits a semester while working 50-60hrs a week. I survived though, and received 3 BS degrees in Automotive, bus...

Just some specs out there.

GT3076r 76mm compressor, 60mm turbine.
HX35 78mm and 60mm turbine
SC6169e (mid sized sc61) 82mm compressor, and 74mm turbine.
The 60-1 has the same 82mm compressor. Can...

Piston speeds on the SR at 8000rpm are getting pretty high. 10000rpm is about 5700fpm. or 1000fpm more than 8500rpm. I wonder how well a turbo vvl handles those rpm. I rev out to 8800rpm now, which...

someone took a screwdriver to the end to open the holes up a little bit lol. But apparently they are pretty good at it because they have all been flowed. right? lol

I would go this route. Keep the runners as long as you can for the best scavenging results and nearly zero loss of response. Ram horn manifolds work great!

The chambered design of the log manifo...

I would only change one thing. No log manifold.

Log manifolds with the VVL dont work out so well. But a quick search and you can find old threads of mine and the woes it brought me. Sigh.

Go ...

Haven't tried the water meth yet. Still changing things up. I think I'll get the GTX35 and if it is too big I'll go GTX3076r.

But if I had a DET I would go with a T2 based turbo and keep the st...

I am thinking a GTX35r in the near future. 200whp by no later than 4400rpm, and 380whp on 10psi. I can dream can't I?

I love the 2860rs, the 2871r is good-but-not-great, as with the 3076r. But the...

My GT3076r has the 60mm turbine and a nice setup behind it. At 4500ft it fails to make over 500whp even on 26psi and race gas. Granted, it has a JWT tune, but the turbo is wheezing out of breath on...

500lb of torque and 5th gear is a no-no on a dynojet. With 500lb tq you have to be making like 600hp+

MY gt3076r loses about 200rpm to a Disco potato. :D

These are bastardized variants. All GT30 based turbos have a 60mm turbine, the T31. If you are getting a 56mm wheel, you are basically getting a GT2871r with a larger compressor wheel, (which garre...

Someone post a dyno chart of a 2871r making 400whp. Thanks.

The 2871 isn't my first choice of turbo. They work ok. But I agree with Kojima on the mismatch. Putting the larger compressor from the G...

I cut that tab off on all my heads. What purpose does it serve on a boosted VE?

Take a cutoff wheel to it.

Our thermostats open at 170*F and the nismo I think is 160*F iirc. Fans kick on at 205-210*F.

Are temps getting over 100*C? Only then would I consider it an issue. But 105*C is where you don't wan...

from previous page.

How much power were they making? What broke? What gear oil?

I only ask these questions because under my measurements the RS6 looks to be stronger in nearly every gear. Shaft flex looks like it i...

ei like the fact that if the ps belt snaps the car will overheat. Because you feel the ps get tough before the car overheats. I bounced the limiter so hard i threw the belt off and boy I am happy I...

Pumps here are only E70. Be careful what you buy. Higher elevations have a higher gasoline content because the higher elevation and cold weather can cause the car to not start.

Pumps often change ...

what is infinity+1?

Answer: eleventybillion!

ya it is there to support the intake manifold. But It has been deemed unnecessary. I remove them.

i dont expect a vvl on stock cams to perform that well on a t25. The vvl hates restriction on the ex side. If you make over 250whp on 8psi i will be surprised.

Check here for a little bit of decent info.
http://store.forcedperformance.net/merchant2/graphics/subaru_oil/Forced%20Performance%20Recommendations%20for%20Motor%20Oil.pdf

Mostly, cost is the biggest issue when utilizing synth oil on breakin. Its pointless to spend all that money on oil that is only in the engine for 500-1000 miles. Mostly, you want the filter to rem...

Ya definitely keep us posted ashton, and thanks for your work and time with this project. We all can appreciate it. :D