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Old 12-28-2011, 04:49 AM   #1
kellygnsd
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2007 2.34LR, EFR7670
LINK G4 hybrid STi

Default Kellygnsd's EFR 7670 build

Since the engine in my '07 STi decided to **** itself recently and the 7670 TS IWG housings have been shipping slowly I've decided to go forward with my STi build. The engine that's going in the car is a hybrid engine from my old WRX that I lost in a fire. Back when I ran it ran it put down 375 whp on airboy @21psi on 91 CA octane. Here's the current build list:

Engine
EJ257 w/ 100mm Wisecos, 8.5:1 CR
Stock STi rods
ACL rod and main bearings
Killer B oil pickup
Cosworth oil baffle
P&L modified oil pump
Cosworth timing belt guide
Fluidampr
Okada Plasma direct coils
Crawford AOS V2

Heads
DPR ported S20 heads
Cosworth 272 non-AVCS cams
+1 mm intake and exhaust valves
Supertech valvetrain 8K rpm limit

Fuel, Air, & Cooling
FIC 1180 cc injectors
Aeromotive fuel rails and regulator w/ custom lines
DW 300 fuel pump
Marren Injection fuel pressure damper
TGV deletes
PnP intake manifold
Grimmspeed PnP throttle body
Koyo Radiator
Mishimoto radiator shroud w/fans
FSR Motorsports FMIC w/ Garrett core
Turbo and Misc. stuff
Full Race twin scroll EFR 7670 turbo kit
ACT 6-puck sprung disk/HD pressure plate
Greddy EVO2 catback exhaust
Innovate LC-1 Wide-band
Link G4 extreme standalone EMS logging
  1. turbo rpm
  2. oil temp
  3. oil pressure
  4. fuel pressure
  5. FMIC inlet temp
  6. Whatever else

I'll be pulling the old engine in the next couple of days and wiring up the Link and the external sensors and hope to have everything done in about 3 weeks or so but considering I still have no turbo there is no real rush. I'll throw some pics up soon and keep this thread updated as everything comes together. If this setup is half as fun as my old ATP30R setup we will have a winner. Stay tuned for more





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Last edited by kellygnsd; 01-29-2013 at 02:26 PM.
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Old 12-28-2011, 06:44 AM   #2
vicious_fishes
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you're going to snap your rods.
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Old 12-28-2011, 08:04 AM   #3
No Limit Motorsport
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Quote:
Originally Posted by vicious_fishes View Post
you're going to snap your rods.
+1 Gorgeous setup though, should be fun until it lets go
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Old 12-28-2011, 09:14 AM   #4
kellygnsd
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LINK G4 hybrid STi

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That's what I was afraid of and will be the reason I don't go balls out until I get an MPS long rod motor.
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Old 12-28-2011, 10:09 AM   #5
vicious_fishes
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why not just get it right from the beginning? i.e pour all the money you did into this into that? you'd get the MP engine much faster then?

alternatively just spend the small amount of cash more on some new rods, it's an insiginificant amount compared to what else you've clearly put into this...
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Old 12-28-2011, 10:48 AM   #6
kellygnsd
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LINK G4 hybrid STi

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This was a back up motor that was basically just a holdover from my last car. The only thing I'm worried about is the bottom end but I think it will hold ~450whp while I get a proper STi motor built.

If the stock motor hadn't failed I wouldn't be in any hurry to get it on the road but this at least gives me time to get the ECU sorted out before i drop a GOOD motor in. If everything wasn't already together I would have considered adding rods but this engine has been an assembled long block in waiting for over a year.

The heads on this motor are really the only thing I care about and the only thing I really want to save. If I get good results on this trial run I may use the non-AVCS heads again in the STi since I'm not really looking forward to shelling out the dough for another set of fully built heads.
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Old 12-28-2011, 11:22 AM   #7
No Limit Motorsport
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Makes sense. Losing a rod and having the piston smack the head would suck. Sounds like you know what you are doing.
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Old 12-28-2011, 12:51 PM   #8
NW2TONE
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its a 100mm bore anyway.. i wouldnt push it any farther than stock sti rod power for that reason as well.

you gonna go with our 2.5 +2 engine or 2.34 +2
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Old 12-28-2011, 02:10 PM   #9
kellygnsd
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LINK G4 hybrid STi

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Quote:
Originally Posted by NW2TONE View Post
its a 100mm bore anyway.. i wouldnt push it any farther than stock sti rod power for that reason as well.

you gonna go with our 2.5 +2 engine or 2.34 +2
I agree. My dream engine would be a sleeved 2.34 long rod motor. Does he offer +2 and +4mm rods.
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Old 12-29-2011, 12:27 AM   #10
NW2TONE
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unde your hood makin
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Quote:
Originally Posted by kellygnsd View Post
I agree. My dream engine would be a sleeved 2.34 long rod motor. Does he offer +2 and +4mm rods.
yeah we do. The +4s are custom order and take longer than custom pistons too get.
Dominic currently has a sleeved big bore +3.5mm longer rod in his rs with s20 cnc'd heads and gigantic cams. but were pulling those off to go with avcs heads with 199-b intake and a 276 i think exhaust
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Old 12-29-2011, 04:47 PM   #11
kellygnsd
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LINK G4 hybrid STi

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Does Dom prefer new blocks over used for his builds?? Once I get the STi engine out of the car I wanted to tear it down and get to rebuilding it.
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Old 12-29-2011, 05:24 PM   #12
EtoS
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Quote:
Originally Posted by kellygnsd View Post
Does Dom prefer new blocks over used for his builds?? Once I get the STi engine out of the car I wanted to tear it down and get to rebuilding it.
New blocks unless it's getting sleeved.
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Old 12-29-2011, 10:25 PM   #13
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then there are those of us that had to go oversized pistons with a bore because they marked the wall :/
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Old 01-06-2012, 05:58 PM   #14
armyssoldierboy
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In for results.
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Old 01-07-2012, 11:13 AM   #15
kellygnsd
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LINK G4 hybrid STi

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I got the old engine out this week and transferred everything over to the new engine. Should have time to drop the new engine in this weekend but I still need to wire up the Link and test out all the I/O.




Last edited by kellygnsd; 01-21-2012 at 06:39 PM.
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Old 01-08-2012, 01:39 PM   #16
Layvon
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annnd subscribed. I was about to ridicule 100mm wisecos also, but then I read the thread. I'll be interested to see how you and bariga turn out. I'm in the process of getting a 7670 on the road too. Just got my heads, now paying for fuel setup then onto short block.

Can you PM me some info on the link G4 once you get it going? That is my last obstacle to figure out, which EM to go with.

Good luck, and in for results also!
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Old 01-08-2012, 06:22 PM   #17
Bariga
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what does the Link going to do with

oil temp
oil pressure
fuel pressure
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Old 01-08-2012, 07:12 PM   #18
kellygnsd
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LINK G4 hybrid STi

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Quote:
Originally Posted by Bariga View Post
what does the Link going to do with

oil temp
oil pressure
fuel pressure
Mostly for logging purposes so I know exactly what went wrong when **** does go wrong but I'm also playing with the idea of a a lower redline and/or shutdowns for low oil pressure and temp and a alternate fuel map when fuel pressure delta drops.
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Old 01-11-2012, 08:36 AM   #19
kellygnsd
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LINK G4 hybrid STi

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Got the engine in last night


Last edited by kellygnsd; 01-21-2012 at 06:40 PM.
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Old 01-11-2012, 10:22 AM   #20
CatfaceType-R
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I'm jelly, it's screaming for an upgraded throttle body and a ac delete in that pic . Good luck and keep up the good work.
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Old 01-11-2012, 10:43 PM   #21
stu
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im pretty sure your stock rods will be fine at this power level. i ran 486 whp for over 5 years beat on it pretty good and the stock rods were fine.
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Old 01-14-2012, 11:43 AM   #22
kellygnsd
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2007 2.34LR, EFR7670
LINK G4 hybrid STi

Default

Installed the DW 300 fuel pump, new fuel filter and this last night


The adapter harness fits under the plate where the stock ECU used to be


The ECU mounts to the back of the glove box enclosure


This week I'll get the pressure, temp, and speed sensors wired up then get to installing the FMIC.

Also, since the dealer said they couldn't just sell me the WRX length coil boots seperate and I would have to buy complete coils at $120 a pop I picked up a set of Okada plasma direct coils for $375 brand new. Maybe I'll do some back to back coil testing if I ever get the right boots for my STi coils.

Last edited by kellygnsd; 01-21-2012 at 06:42 PM.
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Old 01-14-2012, 12:41 PM   #23
-Nic-
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Am I the only one that worries about unbalanced flow between cylinders when people rotate the throttle body like that? Or is it inconsequential at part throttle?
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Old 01-14-2012, 01:01 PM   #24
kellygnsd
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LINK G4 hybrid STi

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Quote:
Originally Posted by -Nic- View Post
Am I the only one that worries about unbalanced flow between cylinders when people rotate the throttle body like that? Or is it inconsequential at part throttle?
I guess we'll have to see. I have an EGT bung on each side so when I get that setup I may be able to tell if flow is somewhat even between runners.
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Old 01-15-2012, 12:16 AM   #25
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Nice!

Any details on the Link?

Where'd you get it, how much $, how much splicing is required with the adapter?
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