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

I can definitely vouch for Nates vog manifold VET. One of the forums best tuners and one of the fastest street cars of it's time.

Stock VE with a super 60. I'm sure Supercowboy and others were there for the dyno too. It was so long ago I don't remember who else was there that day.

since everyone is doubting the log manifold on a ve my brother and i will be coming out with a 30r on a log manifold and prove all the doubters wrong

wake up and smell the coffee people it will work and it will work damn well

jamie fire up the dyno its time to make power

if one knows a tube will work alot better than log dont matter how good you could get the log to probably work , why go log? unless you have time and money to waste, what you should do is set up a test , install a tubular setup and dyno it , then put in your log setup and see if you could better the tubular power.

The log was Ultra lame when we was using it , when tube was installed , then it felt like we actually had a ve head.

What's funny is I could insert JWT ecu everywhere you said "log" and have a similar argument...

There is no forumal for right or wrong. What works for a particular power goal, works. Let's just leave it alone. I'll have a bin for you this evening Vadim, sorry I just been over my head with intake testing.

Didn't see your post. That is a different car, It's a VE+T, SR20DET bottom end and VE head with SR16 cams,550cc injectors, Z32 maf and a disco potato. The other car ran stock 2.0 cams.

Thank you..... I think that Vadim will make the power he is looking for with his setup if you get him a bin to start with and he gets it on the dyno from there.
Drew

I may end up selling my GT30r for something bigger, but I sill believe the GT30 can make power. I still would love to see other's results. I think the SR16 cams are too big for the GT30r, so I am going to throw my SR20ve cams back in this year and see what happens on the dyno. I found this on honda-tech this morning...
s2000 +60WHP from log to mase manifold 501whp e85 - Honda-Tech

Guy switches from a rev-hard log manifold (which is a better design than protech) and goes tubular and makes 60whp more. Why? Flow characteristics of the log manifold and the factory cams. Here is the rev-hard manifold
s2000 f22c 00-09 f20c ap2 rev-hard t3 turbo manifold | eBay

Now the tubular he went to will work better than the log because of the overlap on the cams. You can plot backpressure on my manifold and see that every 1000rpm is 1-2psi of backpressure from the turbo housing. And as the backpressure rises, the torque falls. My VET cams showed a completely flat torque curve on lower boost levels. Switching to tubular made for big increases in torque in the mid-range showing VE was rising over the VET/log setup. But as the backpressure builds the power drops.

I would def suggest if anyone uses a log on stock cams that they use a larger turbine housing like the .82 or even 1.06. The engine will at least be able to breath a lot better. But the difference of the .63 and .82 housing on a T31 turbine is pretty large. About 50-60whp large. Perhaps that is why my turbo has always failed to reach my goals. The .63 is really only good for 450whp... MrSlappy tried to tell me that.

The .82 he also said would be good to 500whp efficiently but could make more power. But just changing the housing on the log manifold would be a big difference, as well as not using the protech "redesign" manifold. A regular log will do better, I guarantee that.

I followed a lot of Snickers/Mrslappy's advice when they gave it. With the exception of the SR16 cams, which I figured might actually work on the twinscroll 30r. Making 400whp on 16psi is awesome, but making 480 on 26psi isn't. One day, I'll find the right setup to get everything working together and will make 500whp.

Giving a bin tune... sweet. That is some progress. Hopefully a little tuning perhaps can make better power.

I would hardly call that rev hard manifold a log manifold.

Right, it is considered a log manifold in the honda world. A lot of people seem to think a "short runner" is the same. But still, 50-60whp gain from that to a tubular on a 50-trim turbo is pretty impressive.

I would like to know the specs on the super-60 turbo used with the log manifold car. There are a ton of variants of that turbo ranging from 300-500hp. The super 60 still has a larger turbine in relation to the compressor, compared to GT series turbos, which lowers backpressure.