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GSi Turbo Project

Forced induction, NA tunning, exhaust, just performance

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GSi Turbo Project

Postby PrecisionBoost » Fri Apr 10, 2009 9:58 pm

Here is a break down of project GSi Turbo .... 1989 Passport Optima

Most of the original work was done by the original owner GSiTurbo with my assistance.
I started to inject cash into the project in October 2007 and purchased the car shortly afterwards.
Since then I've sorted out the main electrical problems, installed a new turbo and converted it to an externally wastegated system.
Thus far I've done a "road" tune and still have it set at 10PSI of boost.

- Professional built T20SED block by company that builds race engines.
- 86.50mm oversize bore
- Wiseco ceramic coated forged pistons 8.8:1
- Toga steel connecting rods
- ARP main studs
- ARP ProWave 2000 conrod bolts
- ARP flywheel bolts
- Lemans 2.0 flywheel
- Aluminum Under Drive pulley
- All components balanced and blueprinted
- T20SED cylinder head
- Z20LET OEM MLS Cylinder head gasket
- full port, polish and blueprint
- new valves and guides
- uprated dual valve springs from QED
- adjustable cam gears from QED
- Bored out throttle body assembly
- Blitz style blow off valve
- Nissan S13 style intercooler
- 2.5" Stainless intake/intercooler plumbing
- Zena Racing Silicone hoses
- ATP / Garrett GT3071R ball bearing turbo.
- 4" Compressor inlet with anti-surge porting
- External wastegate T3 style exhaust housing
- External wastegate screamer pipe
- AEM air filter
- Fuel Pressure gauge with electronic sender
- Analog fuel pressure gauge in engine bay
- Astra VXR fuel pressure regulator
- Walbro 255LPH fuel pump
- 48 lb/hr ( 504 CC ) Accel Injectors
- Greddy E0-1 boost controller
- Greddy Boost Sensor
- Greddy E-Manage Blue piggy back
- Synapse Engineering Missing link boost check valve
- Stock T20SED MAP sensor
- Heavily modified Nissan S13 turbo manifold
- Synapse Engineering Synchronic Wastegate with 42mm adapter
- Crank case catch tank with filter
- Oil cooler with oil filter adapter plate
- AFCO aluminum multipass drag racing radiator
- 10" low profile radiator fan
- Custom 1.5" stainless coolant tubes
- Custom 3" exhaust
- Stainless Borla performance muffler
- Thermal exhaust wrap
- 17" Kosei K1 Racing alloy rims ( 16.7 lbs )
- 205/40-17 Avon ZZ-1 tires
- Sparco Strut brace
- 288mm Vectra front disks and calipers
- 256mm Opel Kadett E GSi rear axle with disk brakes and factory sway bar
- Daewoo Lanos KYB GR2 rear Shocks
- Daewoo Lanos KYB GR2 front strut inserts
- 30mm front and 20mm Rear lowering springs
- Astra GSE F20 gearbox
- 6 Puck Ceramic race clutch
- 1200lb pressure plate
- Short Shifter with Isotta knob and leather cover
- Isotta hand brake handle and leather cover
- Isotta steering wheel
- Oil Pressure gauge with electronic sender
- Boost Gauge
- EGR Gauge with thermocouple in exhaust Manifold
- Innovate LC-1 Wideband
- Bad Boy Bonnet Extensions
- Sunbird GT Turbo hood vents
- Astra MK2 Digital Dash conversion
- OPC spark plug cover and oil cap
- MCR rally Fiberglass Astra MK2 GTE front bumper
- Opel Kadett E rear bumper
- Huthman tuning rear valence
- PLR design side skirts
- Modified Rear hatch ( Astra GTE style )
- Aftermarket Clear rear indicator lights
- Opel Kadett E Halogen Headlamps/bulbs
- Daewoo Nexia rear window quarter panels
- Rear head rests added
- Astra MK2 GTE power window switches and motors
- Aftermarket sport mirrors
- Energizer Battery
- Custom wiring harness
- One level cooler Spark Plugs
- Factory ignition coils
- Compustar alarm/starter
- Turbo timer
1994 Opel Calibra 4X4 turbo ( C20LET 2.0L 16V Turbo )
2002 Daewoo Lanos
2011 Mitsubishi Lancer Raliart --- SOLD! :)
1989 Passport Optima GSi (Astra MK2 ) --- SOLD! :(
1990 Passport Optima GSi (Astra MK2 ) ---SCRAP! :(
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Re: GSi Turbo Project

Postby PrecisionBoost » Fri Jul 12, 2013 4:05 am

SOLD to a good owner, who will give it the attention it needs or else I will have to severely beat him to an inch of his life :shock:
1994 Opel Calibra 4X4 turbo ( C20LET 2.0L 16V Turbo )
2002 Daewoo Lanos
2011 Mitsubishi Lancer Raliart --- SOLD! :)
1989 Passport Optima GSi (Astra MK2 ) --- SOLD! :(
1990 Passport Optima GSi (Astra MK2 ) ---SCRAP! :(
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Location: Edmonton, Alberta, Canada

Re: GSi Turbo Project

Postby Efrain A. » Mon Jul 29, 2013 7:50 pm

:cry: :cry: :cry: :cry:

You better make him post here!
'88 Pontiac Lemans GTE - 2.0 16v XE - fully programable ECU, Custom made intake manifold and other bits.
146.6WHP/135lb.ft - 14.81@94mph
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Efrain A.
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Location: Dominican Republic

Re: GSi Turbo Project

Postby PrecisionBoost » Wed Jul 31, 2013 4:34 pm

Efrain A. wrote::cry: :cry: :cry: :cry:
You better make him post here!


Originally it was going to the fellow with the "Funbird" project, but after discussions about priorities I eventually sold it to his good friend, who also helps with the funbird project
viewtopic.php?f=15&t=14548

MSP6 is the person who will be doing a significant portion of the work ( I will help as well ) so I imagine he will be posting pictures and posting information.

The car is up and running with a C20GET and a custom manifold I originally made for the Funbird and it pulls very nicely throughout the powerband at 10-12psi of boost.


In the end they will continue on with the car, taking care of it and making it fast again.

I simply lack the time to put into the car at the moment and given the choice between focusing my limted time on the GSi or my Calibra, the Calibra won.

I still have a Pontiac Lemans chassis completely stripped and awaiting a full roll cage.

I still have a low mileage Lanos ( my original car that brought me to this site ) which I bought back from the person I sold it to many years ago.


At the end of the day, the GSi will get the time and money it needs to get it back out on the road and I will be moving back to using my Calibra as my daily driver once I sell my Golf TDI

I only listed a few of my vehicles on my signature, in reality I am just finally now getting down to a point where I have less than 10 vehicles.

My daily drivers also include a 2010 Mercedes R350 diesel, a 2010 Golf TDI diesel, a 2005 Chev 2500HD diesel truck and a 1994 RHD Japanese mini truck.


I'm sure the car is going into good hands, they know how rare it is in North America ( since this is the rare Passport Optima ) and I'm sure they will give the project what it needs to become a fast nimble car again.

I also have an agreement that I have first rights of repurchase if they decide to sell it in the future.
1994 Opel Calibra 4X4 turbo ( C20LET 2.0L 16V Turbo )
2002 Daewoo Lanos
2011 Mitsubishi Lancer Raliart --- SOLD! :)
1989 Passport Optima GSi (Astra MK2 ) --- SOLD! :(
1990 Passport Optima GSi (Astra MK2 ) ---SCRAP! :(
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PrecisionBoost
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Posts: 4382
Joined: Thu Jun 19, 2003 5:59 am
Location: Edmonton, Alberta, Canada


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