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Twin Turbo EG33 Build - cozykat
This a thread where I can try to document my build with information, images (stored on photobucket), and cost.
The plan: rebuild eg33 - lowering compression to 9:1 and going with forged internals, run standalone ecu (hydra), add twin turbos (something like two T2560), and update exhaust. ----------------------------------------------------- Initially, I was rebuilding my engine because I thought the engine was experiencing rod bearing failure. Once we started taking my engine apart, Shaun noticed that my flex plate had a thin V-shaped crack in the center (noticeable when directly pushing on it). So we think this is most likely the reason for the horrible noise @ 4000rpm instead of bearing failure. 4 reasons I decided to continue with the rebuild: 1. my engine was already out on a stand 2. we weren't 100% sure that the flex plate was problem or just a coincidence and I didn't want to swap engines again only to immediately need to swap for a 3rd time. 3. Shaun's '92, 90k engine runs significantly better than my '93 150k engine in my car which told me my car could run better even with a simple rebuild. 4. the excitement of the rebuild had already got a hold of me. ----------------------------------------------------- Engine Rebuild Projected Costs (your prices may vary): ----------------------------------------------------- Swapping engines (~$230 - Fluids, Gaskets, hoses, clamps) Subaru Gasket Kit ($250.00) Eagle-H Rods ($465.00) Crankshaft ACL Bearings ($200.00) CP 9:1 Forged Pistons w/ pins and rings ($948.00 / $1896 for Shaun and I together) ARP Studs (long/short) ($320.00) Outlaw Phenolic Spacers ($115.00) GrimSpeed Ported Exhaust ($280.00) Cometic Head Gasket Set ($190.00) Hydra + wideband (optional) (~$TBA) STI injector set (550cc) ($360) Cams (~$600) - still to do Walbro Fuel Pump 255lph ($84) Custom Exhaust (~$TBA) Machine work: Total w/ misc parts ($870) Stock Crank - Polish/Balance (~$70.00) Stock EG33 Block - Bore to 98mm ($140.00) Heads - Resurfaced/Check Align Bore ($170.00) Intake/Exhaust Valve Seals (~$105.60) Valve Job($150)/Replace Valve Guides($50) Balance Engine (with pistons, rods, crank) ($150.00) ----------------------------------------------------- Current Status: ----------------------------------------------------- 2009.01.17.SA/SU: So far, Shaun (YourConfused), Matt and I have removed my engine and swapped in Shaun's spare from his 92 (so I can still drive my SVX while her heart is being worked on). Swap cost: ~$230 to replace fluids, hoses that broke due to age, etc. 2009.03.14.SA: We've have torn the engine down and are waiting for a slot to open up at the machine shop (3 week waiting period). Cost: blood, sweat, and cursing 2009.10.09: Got my block back from Duffin Engine Service machine shop. yay! Looks great, except the block isn't as clean as I wanted it so I'm taking it to get soda blasted when I get some free time and $. lots of time passed... 2014.2.18.TU: I'm back at it.. Picked up STeeL25T's Hydra, cleaned up long block, hard lines, and coated with motor paint (fuel resistant,etc) Cleaned and assembly restarted long block assembly complete more to follow...
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Marisa '93 LSL Anniversary Edition - 02/93 - 150,998 Daily Driver - Forged EG33 (long block), 6MT swap, and re-upholstered interior '92 Pearl - 100k Side restoration project Locker | Old Locker | Shutterfly | ReadingIX | Facebook | Instagram Last edited by cozykat; 08-15-2018 at 05:22 PM. |
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Re: Twin Turbo EG33 Build - cozykat
Go for it!!!
*subscribed*
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Chris 92 Ebony Mica LS-L "A Rolling Restoration": 223,250 KM - Sleeping 2007 STi 6MT, Stance GR+ coilovers, PWR Rad, JDM hood badge, svxfiles 6000K HIDs, JDM Clear Corners, $15/15 min mod, $20/20 min mod, Energy Swaybar Bushings, Hella Supertones horns, Gold STi BBS rims, Group A lightweight crank pulley, A/C system removed, Custom header-back exhaust, Hybrid carbon/metal rear sway bar, restored headlights with CCFL halos 2008 Subaru Legacy Spec B - Diamond Grey Metallic - Sold 2020 Ram 1500 Longhorn - Red Pearl |
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Re: Twin Turbo EG33 Build - cozykat
Why not go to something a little more boost friendly like an 8 or 8.5 tops?
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Re: Twin Turbo EG33 Build - cozykat
All sounds very good to me, right down to your turbo choice. You're going a similar route to me. I'm doing the same thing except with m24 garrett turbos and my own engine management with an svx maf stuck on the inlet of each turbo and an hks or hks knock off foam filter on each maf. Water injection, no intercooler.
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Re: Twin Turbo EG33 Build - cozykat
Sounds great hopefully this idea will come to life. Two thumbs up.
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Re: Twin Turbo EG33 Build - cozykat
sounds like a dream, be sure to post exhaust routing pictures!!!!
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2000 Impreza RS-EG33 1995 Impreza L-ej22 1992 SVX LSI- gutted and scrapped |
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Re: Twin Turbo EG33 Build - cozykat
With compression numbers and turbo sizes like that, I'm guessing you're aiming more at a nice driveable torque curve than crazy peak power numbers?
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Chris 92 Ebony Mica LS-L "A Rolling Restoration": 223,250 KM - Sleeping 2007 STi 6MT, Stance GR+ coilovers, PWR Rad, JDM hood badge, svxfiles 6000K HIDs, JDM Clear Corners, $15/15 min mod, $20/20 min mod, Energy Swaybar Bushings, Hella Supertones horns, Gold STi BBS rims, Group A lightweight crank pulley, A/C system removed, Custom header-back exhaust, Hybrid carbon/metal rear sway bar, restored headlights with CCFL halos 2008 Subaru Legacy Spec B - Diamond Grey Metallic - Sold 2020 Ram 1500 Longhorn - Red Pearl |
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Re: Twin Turbo EG33 Build - cozykat
Good luck. watching this thread closely
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1992 NZDM SVX Maroonish Red/Black ( 1st car ive owned with an cd player ) Has been retired 1989 Vortex 6 Maroon 1983 RX Silver Grey 1973 1400 GSR Yelo 2 Door Coupe awaiting Restoration |
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Re: Twin Turbo EG33 Build - cozykat
Quote:
Quote:
I am considering meth injection but am holding off that decision until I am actually in the process of the turbo. Will you also be installing a tank that includes a level sensor, or installing a water pressure gauge? Yup, I don't plan on ever making this a track/race car just use as daily driver. My goal is to hit maybe 300whp if I make a little +/-, I don't mind.
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Marisa '93 LSL Anniversary Edition - 02/93 - 150,998 Daily Driver - Forged EG33 (long block), 6MT swap, and re-upholstered interior '92 Pearl - 100k Side restoration project Locker | Old Locker | Shutterfly | ReadingIX | Facebook | Instagram Last edited by cozykat; 03-18-2009 at 10:55 AM. |
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Re: Twin Turbo EG33 Build - cozykat
i'm driving around on 8.5 compression na right now. It's not so bad. You can feel comfortable going that low if you want. It will certainly give you more cushion to not need charge cooling as much.
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Re: Twin Turbo EG33 Build - cozykat
I think your turbo choice is good. The installation will be much cleaner this way than trying to fit a bigger turbo or turbos in. I think your car will actually end up being twice the car that a less realistic build would end up producing.
I think you'll find by the time you get to needing to purchase engine management you'll be able to feel comfortable getting a retune of the oe engine management from me instead of the hydra. |
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Re: Twin Turbo EG33 Build - cozykat
Thanks LAN for your confidence. This build is scary for me as I don't have prior build experience - more learning as I go so I'm trying to make careful decisions.
As I understand your EM systems, they are piggy-back? So far, I think the Hydra is my best choice not just because its proven that it will communicate well with the SVX but also believe it provides the most tuning options that I know of in a stand-alone system - "end all be all" as some STI guys call it. Having an engineering background makes me want to know the status and have the ability to control the ECU. I think the Hydra will satisfy that. The price is heavy but I take comfort in knowing my STI friends don't get it any cheaper.
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Marisa '93 LSL Anniversary Edition - 02/93 - 150,998 Daily Driver - Forged EG33 (long block), 6MT swap, and re-upholstered interior '92 Pearl - 100k Side restoration project Locker | Old Locker | Shutterfly | ReadingIX | Facebook | Instagram |
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Re: Twin Turbo EG33 Build - cozykat
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With your standalone, you'll be able to ramp up ignition timing for low RPM/off boost driving with the low compression, which mostly makes up for it. |
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Re: Twin Turbo EG33 Build - cozykat
The hydra replaces the oe ecu. It's an after market ecu. It's supposed to be a good one.
What I do is change the tuning in the oe ecu. It's not a piggy back. A piggy back is what they call something that fiddles with the signals going into and out of the ecu to modify what the ecu does. I don't make one of those. My memory adaptors are just a means of putting modified firmware into the oe ecu. The reason to get the hydra is because it's designed to let you do your own tuning. The reson to get a retune of the oe engine management from me is because you want me to do it for you so you don't have to do your own tuning. I'm going to guess I'll have my turbo system done before you'll have yours done so you'll be able to see the results of mine before you have to shell out any $$ for any engine management no matter which route you go. Speaking of coinciding projects, it sounds like we will both have the same flanges. You can get the turbo flanges ready made off ebay and you can get the eg33 exhaust flanges from smallcar but I'm going to cut some eg33 exhast flanges out of stainless flat bar and not profile the sides and cut a turbine inlet flange with extra material left on the top so I can weld it's edge to the edge of the exhaust manifold flange. I can cut you a set too if you want. This will stop the exhaust system from putting too much stress on the exhaust manifold tubing when the engine torques and hopefully prevent any cracks. |
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Re: Twin Turbo EG33 Build - cozykat
Marisa,
Best of luck with your build! Who's pistons are you going with? (CP?) -Bill
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Retired NASA Rocket Scientist Most famous NASA "Child" - OSIRIS-REx delivered samples from asteroid BENNU to Earth in Sept. 2023 Center Network Member #989 '92 Fully caged, 5 speed, waiting for its fully built EG33 '92 "Test Mule", 4:44 Auto, JDM 4:44 Rear Diff with Mech LSD, Tuned headers, Full one-off suspension '92(?) Laguna, 6 spd and other stuff (still at OT's place) My Locker |
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