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Old 12-18-2017, 06:57 PM   #1
iB00st
Scooby Newbie
 
Member#: 407667
Join Date: Dec 2014
Location: Seattle, WA
Default 2007 Subaru STI GTX35r E66/92 473whp/404whp

Location: HMS Tualatin, OR
Ambient Temp: 40 degrees


Car: 2007 Subaru STI
Dyno Info: Mustang
Transmission: 2007 STI 6 speed
Gear: 4th
Peak HP at RPM: 473.9 @ 6839RPM
Peak Torque at RPM: 410.6 @ 4936
Target Boost: 24psi E66, 22 for pump 92
Fuel: E66, and Chevron 92 pump


Tuned by Steve Hamann

Engine/Power Modifications:
Motor:
EJ257 shortblock bored to 100mm
100mm CP Pistons 8.2:1
Cosworth Rods
ACL Race bearings
D25 WRX Heads (Stock ports)
Kelford R-199-B Cams
Supertech dual springs and retainers
Ferrea Valves
Perrin rotated downpipe/uppipe
Garrett GTX3582r .82
Perrin EL Header
Perrin Core FMIC
HKS Bov
Tial 44mm wastegate
All custom fabricated intercooler piping
Custom fabricated dump tube of wastegate
Cobb SS 3" CAT-BACK EXHAUST

Fuel System:
Cobb Flex fuel
Id1300x injectors
Aeromotive FPR, Fuel Rails
walbro 450's Hardwired
size braided stainless steel -8 AN lines for delivery and return.
size -6 AN lines in the engine bay.

(Made 523whp on 30pst but started leaning out on top. Need bigger fuel system)

Driveline Modifications:
2007 sti six speed, South Bend Stage 3 clutch.

Suspension Modifications:
BC coilovers.










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Old 12-18-2017, 08:21 PM   #2
user1029
Scooby Specialist
 
Member#: 57064
Join Date: Mar 2004
Vehicle:
2008 STi IAG built
HTA86 E85 Kel272s Cos IM

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Dude wat, all that (bigger fuel lines too?!?!) and 1300cc

Time for radium surge tank with two walbro 450s and 2000cc injectors shooting for 40psi 700whp
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Old 12-19-2017, 08:16 PM   #3
BRipper
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Member#: 417473
Join Date: Mar 2015
Location: CA
Vehicle:
2005 STI perrin 30r
.82 hs / 450whp [email protected]

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I want this turbo, I ran out at 455/465 on a mustang. an old gt30, 1300 injectors & hardwired walbro 460, whatever is at the pump e85
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Old 12-20-2017, 01:13 AM   #4
my_sti_1
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Member#: 86713
Join Date: May 2005
Location: Yay AREA, SF
Vehicle:
04 STi SUPER99 C16
Java Black Pearl

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Quote:
Originally Posted by BRipper View Post
I want this turbo, I ran out at 455/465 on a mustang. an old gt30, 1300 injectors & hardwired walbro 460, whatever is at the pump e85
i bought this turbo brand new and now decided to use something else. message me if you want it.
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Old 12-20-2017, 01:15 AM   #5
my_sti_1
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Member#: 86713
Join Date: May 2005
Location: Yay AREA, SF
Vehicle:
04 STi SUPER99 C16
Java Black Pearl

Default

this must be a blast to drive. you should get a front turbo mount kit to help with spool.

nice results..
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Old 12-20-2017, 01:25 AM   #6
aldanavaldez
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Member#: 380981
Join Date: Feb 2014
Chapter/Region: SCIC
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Quote:
Originally Posted by my_sti_1 View Post
this must be a blast to drive. you should get a front turbo mount kit to help with spool.



nice results..


Who makes the front mount turbo kit? I saw that killer b had something like that where the turbo kit moves the turbo to the front of the engine low on the passenger side. I checked their website, but I donít know if you have to piece a kit together, if they custom fabricate the exhaust manifolds, or what the deal is. From the pictures it looked like the kit was for the 2005 and older Imprezas.
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Old 12-20-2017, 01:32 AM   #7
my_sti_1
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Member#: 86713
Join Date: May 2005
Location: Yay AREA, SF
Vehicle:
04 STi SUPER99 C16
Java Black Pearl

Default

Quote:
Originally Posted by aldanavaldez View Post
Who makes the front mount turbo kit? I saw that killer b had something like that where the turbo kit moves the turbo to the front of the engine low on the passenger side. I checked their website, but I donít know if you have to piece a kit together, if they custom fabricate the exhaust manifolds, or what the deal is. From the pictures it looked like the kit was for the 2005 and older Imprezas.
https://forums.nasioc.com/forums/member.php?u=91074

this is his work. he is the best.

https://forums.nasioc.com/forums/sho....php?t=2680323
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Old 12-23-2017, 11:30 PM   #8
iB00st
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Member#: 407667
Join Date: Dec 2014
Location: Seattle, WA
Default

Need some opinions please. Blown headgasket or lifting heads??

Built EJ257
Bored out 100mm
Arp2000 headstuds
Oem head gaskets

Yesterday I did some 4th and 5th gear pulls (27psi) and my coolant pushed out the overflow tank. Today I flushed my coolant and burped the system. The car idled for good 30-45 min and did not overheat. Went up to 205*, fans turn on and goes down to 185*. Normal driving staying off the boost temps are 180-189. As soon as I start doing a pull my coolant starts pushing out the overflow tank but car does not overheat. Just got dyno tuned last week on E85 made 473whp. When I was putting heads onto the short block I torqued the arp studs 30,60,90lbs and the 2 middles one to 95lbs. I DID NOT torque them down again after that. Which is why Iím thinking maybe Iím just lifting the heads???

Drove the car off boost on break in map for 1700 miles. Got tuned and put on only 800-900 miles so far. Now it started pushing the coolant out.

So what do you guys think, headgasket or lifting heads?
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Old 12-25-2017, 12:52 PM   #9
PDXREALTOR
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Member#: 468393
Join Date: May 2017
Location: PDX OREGON
Vehicle:
2017 STI

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Subbed for outcome.

Did HMS build the block? I thought I read where you torqued the head studs so that would indicate no, but just wanted to verify.

Last edited by PDXREALTOR; 12-25-2017 at 04:04 PM.
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Old 12-25-2017, 02:04 PM   #10
subbi7
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Member#: 241967
Join Date: Mar 2010
Vehicle:
02 wrx

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Did you resurface the block ?
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Old 12-26-2017, 03:08 PM   #11
iB00st
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Member#: 407667
Join Date: Dec 2014
Location: Seattle, WA
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Quote:
Originally Posted by subbi7 View Post
Did you resurface the block ?
Yes, block and heads were fresh from the machine shop when assembled.
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Old 12-26-2017, 03:09 PM   #12
iB00st
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Member#: 407667
Join Date: Dec 2014
Location: Seattle, WA
Default

Quote:
Originally Posted by PDXREALTOR View Post
Subbed for outcome.

Did HMS build the block? I thought I read where you torqued the head studs so that would indicate no, but just wanted to verify.
No, they just did the tune. I torqued the heads myself.
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Old 12-26-2017, 03:25 PM   #13
PDXREALTOR
Scooby Newbie
 
Member#: 468393
Join Date: May 2017
Location: PDX OREGON
Vehicle:
2017 STI

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Quote:
Originally Posted by iB00st View Post
No, they just did the tune. I torqued the heads myself.
Gotcha. Sorry I can't offer more help. Good luck with your situation man..
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Old 12-29-2017, 03:54 PM   #14
Dr. octagon
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Member#: 171127
Join Date: Feb 2008
Chapter/Region: MAIC
Vehicle:
2005 Subaru
PSM

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Throw that radiator cap in the trash
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