Warlocks Daily: 08 LGT Spec B Engine Rebuild

[Warlock]

I will finish posting details as soon as I get a free minute at work.

Hello All, this is my 2008 Legacy GT Spec B. I bought it with a low compression motor back in December, it ran but I knew it wasnt long for this world. Luckly, I had quite a bit of spare parts laying around from building my drag car, a 2012 WRX. I had a 2005 LGT laying around that became the doner of several parts such as the heads (its the Red LGt in the photos below, it will also be getting built soon).

Heres the specs on the parts:

2004 Forester XT block honed 10 over

Manley Forged Pistons, stock compression

STi rods w/ ARP Rod bolts

King Race Bearings

Brand new STi Crank

Perrin lightweight pulley

2005 LGT heads

OEM Gasket set, oil pump, Gates racing Timing and water kit

ARP 2000 head studs

Brian Crower dual valve springs, valves. retainers, seats, keepers, ect

GSC bronze valve guides

Stock LGT intake manifold

Torque Solutions TGV deletes

Grimmspeed TGV spacers

Cobb intake (came with red car)

FP Red turbo, ported, with 10CM hot side, internally gated

FP inlet pipe (expensive!)

ID1000 injectors

Perrin fuel rails

Aeromotive Fuel Pressure Regulator

Grimmspeed EBCS

Stock exhaust manifold and up-pipe from 2008 LGT motor

Generic catless downpipe 3"

Stock catback, nice and quiet

ETS black Intercooler piping

ETS 3.5" intercooler, anodized black

GFB electronic blowoff valve

Mishimoto Radiator, slim fans, and rad hoses

ACT Heavy Duty 6-Puck Disc Clutch Kit

New OEM power steering pump & AC Compressor

Generic catch can

Braided turbo oil and AVCS lines

DW300C Fuel pump

 

Mods:

Complete PCV system delete, all routed to catch can

Air pump removed due to 2005 heads

Intake air box delete to make room for intercooler pipes

custom ran fuel lines

Sti turbo side pieces to match an sti style turbo to an LGT intake manifold - THANK YOU ETS!!!!!!!

 

Software:

Open source via Tactrix

-15psi on intelligent with smooth throttle

-23psi sport with normal throttle (still tuning this area)

-29psi on Sport sharp with very aggressive throttle (still tuning this area)

-tinywrx flat foot shift / launch control patch

 

Visual:

Redline tuning hood rods

18X8.5 ENKEI TUNING TX5 PLAT GREY wheels with Nitto NT05 97W Tires 245/40/R18 for summer use

Raceland Coilovers

Drilled and slotted rotors

Edited October 8, 2019 by Warlock
update info

[Warlock]

additional photos

[Cjtorres10]

Looks great!!

[Kazsmir]

Which Aeromotive FPR did you go with?

[Warlock]

Sorry for the delay,

I used the computer model 13105

https://aeromotiveinc.com/product/compact-efi-regulator/

[Warlock]

So just as an update, I ran into several issues with this build. First, i installed the cam caps wrong and tightened them too much, constantly had timing over advanced errors AND oil leaking into timing case. After fixing that issue and doing timing all over again, my timing tensioner bolt snapped and I hopped timing while driving on the highway..... AMAZINGLY NO DAMAGE!! So, new timing belt kit and shes back up and running...... and after about 3500 miles or so, the brand new oil pump seized while I was on the highway and very quickly spun a bearing.... ugh, oh well, cant cry over spilled milk.

So, it sat for about 3 months and them I got back at it. Wanted to save time and just went out and bought an IAG closed dock short block and got about to doing some other upgrades while I was in there.

I got the IAG oil pickup and windage tray addon along with a killer b oil pan. I feel better knowing the pan is better baffled and has more capacity than stock. Brand new ARP stud kit. New clutch kit while I was at it too. IAG unequal length headers heat wrapped. Added a Perrin oil cooler into the mix as well (I plan to start road coursing the car next season, not so much drag racing). Got a Optima yellow top battery and relocated the battery to the trunk directly behind the rear seat. New slim radiator fan kit from mishimoto with hoses and such. I had an issue where the motor was rocking last time and occasionally the alternator would hit the upper radiator hose, so this time I did full torque solution mounts along with tranny mount. So we drop all this in, and we discover an oil leak from the rear main seal, my fault..... ugh, motor comes back out. Oil leak fixed, also found a coolant leak from the hose that goes to the throttle body so replaced that. Also got an RCM high grip timing tensioner this time, I dont want any more headaches at 8k rpm.

On the outside, i finally mounted my new wheels with Nitto NT05 tires (8.5 inch wide by 18 wheel) and dialed in the Raceland coilover kit. Got rid of the factory chrome front grill and replaced it with a JDM front grill (i always though calling something JDM was for street cred, but I actually waited like 4 weeks for this thing to clear customs from Japan.....so yeah, JDM?). My buddy was able to get the grill to mash up with a USDM bumper which was a headache.

 

So, anyway, I will try to get some pics up in the next few days.

Upcoming mods:

Grimmspeed master cylinder brace

Wilwood front brakes (ordered, waiting for delivery)

Whiteline full suspension kit (ordered, vendor says whiteline wont ship for a while...)

 

Oh, also forgot, running on wastegate pressure on the FP red, aka entire wastegate map is 0 with a max of 0, and I am just about maxing out my MAF sensor. So I can custom rigging up a 3.5" MAF housing and hopefully that will give me some room to start turning the turbo up. I really, really, really dont want to go speed density as I like to tune this myself on the street, not on a dyno.

Edited September 13, 2020 by Warlock

[Warlock]

 

 

 

 

Edited September 13, 2020 by Warlock