I dont think it will give you any problems as long as its post o2.

It think with more rev's the upped boost pressure will carry the cams out to 7300+. From the looks of things the boost will keep climbing and so will the HP.

It's F-king shocking how close the VE lbs/min has been to rwhp. anyone wanna see the logs? (you gotta have Hpt folks)

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Speed Is Life

Upload it to sendspace no account needed.

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1993 talon tsi awd - stock on the outside, modded on the inside
2007 solstice gxp - Solo Performance 3" mach exhaust + hiflow cat - dyno sheet

perhaps it wasnt totally worthless on furthur inspection.

Match log title with dyno title

Russ thanks for converting it for everyone!

I was just thinking, Im going to have a look at cold start cam timing. It makes the turbo shriek at 1200rpm.
Perhaps I can emulate the same conditions when warm to improve low speed response in 1st and 2nd.

No Problem BTF! The latest:

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Speed Is Life

So on average were seeing 9.5whp/psi. if it keeps up this way another 10psi will be another 95whp.
No wonder why it behaves so violently at that boost level.

Whats the Biggest crank arm that will fit in this thing? anyone know? 95mm?

It's cold as hell today (and blowing 40+mph gusts.) IM stayin in the CNC shop. To damn cold to go up to the dynoshop.
So I have my Mic's, calipers and digitizer chillin in front of me.
And a sheet that has the dimentions of several Gt28-30 series cartrige flange, heatshield height and their turbine dia/trim/bladeheight.
I also have the BW apart (you cant believe how fun that is).

I beleive I can machine(and weld a ring to) the Turbine housing from the BW to accept a couple different trim garret GT turbos. possibly even the Gt3071-wg with it's 56mm exducer. The OD of the Compressor housing will also be of concern due to the high & tight mounting position of the factory turbine. Im going to call Brother Pete over at DW diesel and see if perhaps we can get the turbine housings from BW and how much$$. it might be an economical way to get the lower case setup going. 3071R-wg's have a 2.75" inlet availible.

Acronym help... What's BW?

Thanks!
Russ

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Speed Is Life

BW= Borg Warner (Factory Turbo Man.)

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It is Cool, Leather, XM, Monsoon and different! :)

IM starting to wonder if wastegate flow should be separated and rejoined furthur downstream.
It just seems from the data that more boost = less wackiness up top. moreboost also = less wastegate flow...

BTF interesting thought about the internal WG...

One thing really gets me though, on a motor like this, we should be seeing much more like 15WHP per PSI on a turbo like that. Something isn't right here. Its either A/F or Cam timing, Unless the head flows like garbage.

Naw,
I never see that kind of return out of motors this small On my dyno..10-15flywheel but not wheel hp. the 9.5whp/psi is pretty stout in fact for a motor that peaks at 6100. If it ran out to say 8K + like the DSM's the number would be higher just from the formula, and due to that psi equating mto greater lbs/min.
rotational hp= (torque x RPM) /5252

This is a dyno plot with WG mod running 12.7 AFR on a Mustang dyno.

No other boost modifiers, you will notice the torque dip at 3100 rpm, this is where the boost fell from 17.5 psig to 14 psig, it held that boost until about 4700 rpm where as it began to build to about 17 psig until about 5200 rpm.

I will see if someone else can post it.

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It is Cool, Leather, XM, Monsoon and different! :)

I can host it if you haven't already found someone to. You can email it to me at:
russ*grayforge#com (replace * with @ and # with .)

Thanks,
Russ

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