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Old 06-30-2010, 08:46 PM   #376
rexblake
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Quote:
Originally Posted by 06rexwagon View Post
Same built engine as the last turbo. Only changes were the turbo kit and an 86mm KSTech CAI. Still stock ecu.
The engine is:
05 EJ257
CP 8.2:1 pistons, coated, 99.5mm
Eagle rods
ACL bearings
balanced and polished crank
GSC 272 cams
BC springs and retainers
stock valves
Are you running 31psi on the an open block? No reliability issues or worries?
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Old 06-30-2010, 09:23 PM   #377
Full-Race Geoff
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Quote:
Originally Posted by MartinSTi05 View Post
I had my piston domes, combustion chambers, valve faces and exhaust ports ceramic coated to raise thermal efficiency. I purposely used an exhaust cam with a longer than normal (for subarus) duration because I figured a larger T4 housing along with the reduction in cross talk accompanying twinscroll would allow me to eake out more VE.
your thoughts on the camshaft are absolutely on-point, and something i often stress to our customers but few ever take advantage of. The complete seperation between interfering cylinders means you can run a much more aggressive camshaft, mildly aggressive N/A profiles seem to work the best in my experience.

The coatings are smart and certainly have their place. I do wonder what the end result is if you just threw a 2.5L crank back in your car with all those other items?


Quote:
Originally Posted by MartinSTi05 View Post
P.S. I am looking to shed some weight from my car, care to sell me an AL exhaust?
check out the latest issue of modified magazine, youll see why the aluminum exhaust is risky to run... it works for a short life, but must be replaced. i ran mine for over 10 dyno sessions and 8 track days, it failed during the main event and caused an under-car powersteering line to burst and catch fire. we got the fire out before any damage, but it was scary!

video here:
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Old 07-01-2010, 09:12 AM   #378
MartinSTi05
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I am quite aware of rge risks of an Al exhaust, lol I brought it up as a counterpoint to your crank comment, lol...
Quote:
Originally Posted by Full-Race Geoff View Post
your thoughts on the camshaft are absolutely on-point, and something i often stress to our customers but few ever take advantage of. The complete seperation between interfering cylinders means you can run a much more aggressive camshaft, mildly aggressive N/A profiles seem to work the best in my experience.

The coatings are smart and certainly have their place. I do wonder what the end result is if you just threw a 2.5L crank back in your car with all those other items?




check out the latest issue of modified magazine, youll see why the aluminum exhaust is risky to run... it works for a short life, but must be replaced. i ran mine for over 10 dyno sessions and 8 track days, it failed during the main event and caused an under-car powersteering line to burst and catch fire. we got the fire out before any damage, but it was scary!

video here: YouTube- Full-Race R14 (240SX Skyline Conversion) Catches Fire @ 2010 Tuner Shootout
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Old 07-01-2010, 11:33 AM   #379
Full-Race Geoff
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ohhhh i got served!!
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Old 07-01-2010, 03:04 PM   #380
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Quote:
Originally Posted by Full-Race Geoff View Post
Is the flatter torque curve of this graph attributed to better flowing heads?

Quote:
Originally Posted by 06rexwagon View Post
Same built engine as the last turbo. Only changes were the turbo kit and an 86mm KSTech CAI. Still stock ecu.
The engine is:
05 EJ257
CP 8.2:1 pistons, coated, 99.5mm
Eagle rods
ACL bearings
balanced and polished crank
GSC 272 cams
BC springs and retainers
stock valves
Can you provide some details of your fuel set-up?

Last edited by frogmonk; 07-01-2010 at 03:09 PM.
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Old 07-01-2010, 04:13 PM   #381
06rexwagon
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Quote:
Originally Posted by rexblake View Post
Are you running 31psi on the an open block? No reliability issues or worries?
Yes, it's a stock case. I don't run 31 daily, but have done a bunch of pulls at that psi. I typically keep it around 25-26 for DD.
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Old 07-01-2010, 04:14 PM   #382
06rexwagon
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Quote:
Originally Posted by frogmonk View Post
Is the flatter torque curve of this graph attributed to better flowing heads?



Can you provide some details of your fuel set-up?
Walbro in tank through -6 AN feeding Bosch 044 inline, -6 AN to AP rails, 1200cc injectors, returning through Aeromotive adjustable FPR. Stock return line.
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Old 07-01-2010, 04:25 PM   #383
Full-Race Geoff
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i personally prefer the stock blocks and stock sleeves... they run cooler and dont have the possibility of a sleeve shifting and busting the head gasket. for a drag car or dedicated high boost build its a no-brainer sleeves are mandatory. for a street car stock sleeve works, assuming the turbokit and tune are on-point
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Old 07-01-2010, 07:50 PM   #384
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what gear was the car in for the new dyno graph, 06rex?

I often see the "full boost by x rpm" comment, but I never understand it. Doesn't gear ratio greatly affect what this rpm number would be? And, if a person says their car hits full boost by x rpm point...and that data was gathered in the same gear as a pull with a dyno graph....wouldn't said rpm point be ~ peak torque?

I like the t3 BW s200 stuff for power in the 500's, btw.
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Old 07-01-2010, 08:11 PM   #385
Full-Race Geoff
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yeah the s200 and s200sx are great turbos
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Old 07-01-2010, 10:05 PM   #386
06rexwagon
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Quote:
Originally Posted by garagedefeat View Post
what gear was the car in for the new dyno graph, 06rex?

I often see the "full boost by x rpm" comment, but I never understand it. Doesn't gear ratio greatly affect what this rpm number would be? And, if a person says their car hits full boost by x rpm point...and that data was gathered in the same gear as a pull with a dyno graph....wouldn't said rpm point be ~ peak torque?

I like the t3 BW s200 stuff for power in the 500's, btw.
4th gear on USDM 05 STi gearbox.
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Old 07-02-2010, 11:57 AM   #387
06rexwagon
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Old 07-02-2010, 12:11 PM   #388
Full-Race Geoff
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nice vid - i heard that builder/tuner knows what he's doing
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Old 07-02-2010, 07:04 PM   #389
TDagen
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Nice setup cam!!! Gonna get that beast to the track?! You should run a log through airboy I bet it will show better spool up ! Sick sick sick!
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Old 07-02-2010, 10:15 PM   #390
06rexwagon
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I hooked up a new Zeitronix Ethanol content analyzer and the stuff in my tank is E78. E85 may actually make a little more power.
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Old 07-03-2010, 05:11 AM   #391
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Quote:
Originally Posted by 06rexwagon View Post
I hooked up a new Zeitronix Ethanol content analyzer and the stuff in my tank is E78..
Cool! Is that one less expensive then the OEM GM flexi-fuel (ethanol) sensor?

Edit: I see its just the display, the sensor used is also the GM-sensor ;-)
My stand-alone ecu (DTA) compensates automatically for a lesser ethanol content, so I think I'll go look for that sensor anyways.

Tnx,
Walter

Last edited by Beetspeed; 07-03-2010 at 07:47 AM.
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Old 07-03-2010, 05:28 PM   #392
ASU
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Got new numbers for the little S259 on pump at 21psi 430 whp and on pump + meth at 25psi we got 520whp. I will post the logs as soon as I recieve them via email.
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Old 07-03-2010, 05:32 PM   #393
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It was actualy 529 Dyno at 1.0 correction. Add 60whp to get to Dynojet numbers. Tuned out smooth John. Lots of power left but 110hp gain for meth injection and pump 91. Its tuned for high speed runs in germany It makes power all the way to 7500-8000 now with the big intake. 1000CC injectors and race fuel, and 30 psi, I believe I can get 600. Your car is sick man.. Just sick!!!!

Clark
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Old 07-03-2010, 05:49 PM   #394
ASU
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Quote:
Originally Posted by Clark Turner View Post
It was actualy 529 Dyno at 1.0 correction. Add 60whp to get to Dynojet numbers. Tuned out smooth John. Lots of power left but 110hp gain for meth injection and pump 91. Its tuned for high speed runs in germany It makes power all the way to 7500-8000 now with the big intake. 1000CC injectors and race fuel, and 30 psi, I believe I can get 600. Your car is sick man.. Just sick!!!!

Clark

Thanks Master Clark, brilliant just brilliant, Im sure that fixing the leaking Perrin header helped a little bit too, looks to me like the little turbo that could
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Old 07-03-2010, 06:08 PM   #395
Clark Turner
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That turbo is actualy pretty big. I was comparing charts to the 4088 and yours. Its in that same ball park...

C
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Old 07-03-2010, 06:11 PM   #396
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Originally Posted by Clark Turner View Post
That turbo is actualy pretty big. I was comparing charts to the 4088 and yours. Its in that same ball park...

C
So you think the 62lb rating they give it, is underestimated?
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Old 07-03-2010, 06:14 PM   #397
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62 is a big turbo On this hot motor, It will do that easy!

C
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Old 07-03-2010, 11:28 PM   #398
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post some logs people, please
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Old 07-05-2010, 12:07 PM   #399
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Same built engine as the last turbo. Only changes were the turbo kit and an 86mm KSTech CAI. Still stock ecu.
Cam, what voltage did you hit at 600whp? That 86mm MAF should be close to maxing out. We have done a few 89+mm rotated intakes for people really pushing the envelope on the stock ECU.
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Old 07-05-2010, 01:06 PM   #400
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Quote:
Originally Posted by 06rexwagon View Post
Yes, it's a stock case. I don't run 31 daily, but have done a bunch of pulls at that psi. I typically keep it around 25-26 for DD.
Good to know, I keep mine about the same. Of course I'm not running nearly as much air as you are. I might crank the boost back up to 28psi for daily use.
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