Heck yes, maybe/hopefully bigger in A/R though

Scorke

 

Bigger than a 1.1? You so crazy Scorke

 

On a twin scroll bigger=better unless it's insanely large.

Scorke

 

Geoff owns all...LOL

 

Sorry for the long wait, here is the 30R dyno plot, stock 4G63 with some small revolver 264s and our twinscroll kit. stock intake manifold, stock tb, stock headports, almost everything is stock on this setup



not yet, but they are working on them. They just released some turbos to compete with the 42R, i know the 35R and 40R are coming next.

tell them!! they love hearing from enthusiasts.

 

I take it this is a pump fuel chart?

Also, can you give a brief configuration sketch of the 600hp S14 you mention in your signature?

 

thanks for the 30R dyno plot. any way we could see the non twinscroll dyno plot for comparison? Is this the 3071 or 3076? what was your max boost? can't wait to see the rest of you testing on the bigger turbos with the necessary supporting mods to make the most of these turbos!

 

happen to have a MIVEC equipped motor you plan on testing?

holy cow, i just noticed that graph has the stock TB on it. to clarify, that had the stock cat on it as well?

 

The previous dyno was with a stock turbo + 10.5 hotside and O2 housing. That made a best of 338 with the same cam gear settings, both on 93 pump @ 22psi.

Ivey told me he couldn't believe the spool and I have to agree. The throttle response is amazing and the car just comes alive on part throttle. We didn't do a reace gas pull because I ahven't decided if I would use C16 or meth and didn't want to waste Sean's time.

So far the benefits are:
The car feels so responsive, a dyno just can't tell the story
much more midrange pull
a ton more top end, even on pump
The car sounds sick at idle, every stop light gets people looking.
It feels really different on decel, the engine braking is less than half of what it was with the stock turbo. (Geoff should include brake pads)
Makes much better use of the 5 speed gearing
Great DD or street car setup.

 

Could whomever has the file, post up the gear ratio on that dyno pull? Was it done in third or fourth gear? Also, what kind/size of intercooler was on the car?

I'll post my observations after those questions are answered.

 

I understand that this is your twinscroll kit Geoff, but the twinscroll turbo is not the only thing contributing to the spool here right? I would figure the back door piping which decreased overall lengths in charge pipes have quite a bit to do with it as well or maybe im wrong

 

Peak torque at 4800 rpm?

That sounds to me like your typical GT30 number.

Should we see any improvement on moving the power band down the rpm range with a twin scroll because based on that dyno I don't really see it.

 

Why are people so excited by this curve? Can't we achieve similar results with a stock 9 turbo + alk (a little less HP), but more tq from 3 - 5K?

 

If this was a typical third gear pull on a dynojet with 94 degree temps, the spool-up is DEFINITELY, WAY faster than average. However, if it is a fourth gear pull, there is nothing here to brag about. Also, if the stock intercooler was used, it would enhance initial spool up but hinder peak numbers. The peak numbers here on 93 octane are not very impressive, but from the look of the graph, the tune is conservative and smooth. There may have been a lot of power left on the table. So, the jury is still out. We need more 411....

 

First, this graph looks really conservative to me. Usually, with zero smoothing, you'd see a rougher graph on pump gas if it was tuned aggressively. I think there is more left on the table.

This kit would crush-destroy-humiliate a stock turboed 9. On race gas, this kit would make 500+whp, that is a hundred more than a 9 on race gas.

Edit: just saw you said "+alky." In that case, you are about right, but the top end of the 30R would still dominate a stock 9 turbo at higher rpms. Don't get me wrong, I love stock 9 turbos.

Anyway, without evidence/info of the gear used in that pull, we don't have the info we need to pass judgement.