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Built EJ25, Xona Rotor 7164, Plazmaman Water to Air

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26K views 78 replies 9 participants last post by  CEEBEE  
#1 · (Edited)
Hey guys thought I would do a quick build thread for my urban grey Hawkeye. Started out with basic bolt on's vf34, PW top mount, 3" Turbo XS and a flash tune which was super fun and managed a 12.8@109mph. The car stayed that way till it's journey of 2 engine builds as below...enjoy!


BUILD 1

Car: 2007 WRX
Tuner: Justin @ JW Automotive
Dyno Info: Mainline Dyno
Transmission: 6 Speed Long Ratio
Gear: 4rd
Peak HP: Dyno 502whp
Target Boost: 27 psi tapering to 25
Fuel: Pump E85

Engine:
EJ257 closed deck 14mm. head studs
99.75 CP pistons
Manley H Tuff rods with ARP bolts
ACL race bearings
BC 272 cams
Ported heads, 1mm oversize supertech valves, double valve springs
Killer B pickup and baffle
Plazmaman custom 1000hp water to air intercooler
3bar MAP Sensor
Grimmspeed ECBS
TGV's deleted, 3mm phenolic spacers
Cosworth air pump delete kit
Roger Clarke rotated kit up /down pipe, Garrett Gtx3076r .82 hot side Tial 44mm EWG @ 1 bar springs, EWG Rerouted to DP
ID1300cc injectors
Walbro 460 fuel pump Hard Wired in tank, Aftermarket Industries Surge tank with 1000hp Holley dominator pump, Aeromotive fuel rail kit w/ FAST regulator
Jim Berry Race Clutch

IMG 2793 zpsmcwwpzwu
59113
 
#17 ·
Awesome!

Very similar to what I would like in my next build - though there is a good chance I will end-up in a VA body.

Interesting parts we don't see :)

Curious, what is your long ratio (from) ?
 
owns 2020 Subaru STI
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#19 ·
Car stayed this way for 2 years/10,00km and was awesome to drive...until it started pushing coolant :cry: We had doubts about head gasket/head surface integrity from the first time we put coolant in it and it leaked between head and head gasket.Once the heads were off we could see the machining was so poor it had left an imprinted pattern on the gasket itself. At this point we decided to pull the whole motor down and check everything...wasn't pretty so it was decided to start again with a new block and full rebuild of the heads. I was devastated :( Not interested in talking about who built it as that's in the past and it benefits no one.

59141
 
#20 · (Edited)
BUILD 2

Dyno Info: Dynapack Hub
Transmission: 6 Speed Long Ratio
Gear: 4rd
Peak HP: Dyno 592whp
Target Boost: 28 psi
Fuel: Pump E85

Engine
EJ257 closed deck
99.75 Wiseco AP pistons
Argo I Beam rods with ARP bolts
ACL race bearings
Ported heads, new valve seats
Billet 288 custom cams
1mm oversize supertech valves (inconel ex), Kelford beehive springs
ARP 1/2 inch head studs
Killer B sump, pickup and baffle,
Plazmaman custom 1000hp water to air intercooler
Cosworth inlet mainfold
Tial QR BOV
5bar MAP Sensor
Grimmspeed ECBS
TGV's deleted, 3mm phenolic spacers
Cosworth air pump delete kit
Killer B overflow/washer bottle
Mishimoto x line radiator
25 row oil cooler

Turbo
Xona Rotor 7164 1.03 hot side (.86 initially see following story)
Fab Lab rotated kit up / 3.5" down pipe, Tial 44mm EWG @ 1 bar springs, EWG Rerouted to DP
Turbosmart turbo oil pressure control

Fuel System
ID1700cc injectors, Walbro 460 fuel pump Hard Wired in tank, Aftermarket Industries Surge tank with 1000hp Holley dominator pump
Aeromotive fuel rail kit w/ FAST regulator

Sensors
Oil pressure/temp
Fuel pressure
Intake temp
CAN wideband
Emap

59142
 
#22 ·
Initially had the .86 rear housing with the 7164 and while it made ok numbers it was lazy. After installing a back pressure sensor in the up pipe it was clear the turbo was experiencing choke flow. A 1.03 Tial rear housing was ordered as well as a 3.5" dump pipe was fabricated...And what a difference it made! Like a different car to drive :p. Low rpm and transition onto boost is great and the thing just pulls hard on boost:cool:

Graph below is .86 rear 3" dump pipe std inlet manifold vs 1.03 rear, 3.5" dump pipe and Cosworth inlet manifold....same boost

59143
 
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