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Vehicle Owner

Member ID: rblair01

Location: Colorado Springs, Colorado

Vehicle Info

1991 Geo Storm

Bragging Rights

  • 1/4 Mile15.49 sec @ 88 mph
  • Top Speed159 mph
  • HP250
  • Weight2282 lbs
  • SPL4 dB

Major Upgrades

  • extrude-honed
  • port and polish
  • nitrous
  • turbo
  • engine swap
  • bore-increase

Ratings

    • Currently 4.5/5 Stars.
    • Currently 4/5 Stars.
    • Currently 4/5 Stars.
    • Currently 4/5 Stars.

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Last updated: Nov 14, 2008

Hits: 78,681

Robie’s Geo Storm:
“Colorado Storm”

  • Currently 4.5/5 Stars.
59 guestbook comments

The SOHC engine is a nice little engine, but like most things with me, I needed something with a little more power. SO. . .I bought an Isuzu Impulse RS that was completely rusted out. The engine was totally trashed, turbo blown(the shaft was broken in 2 spots) and the compression was a joke.
One thing to do from there, Rebuild time!

rblair01's 1991 Geo Storm Colorado Springs, CO Customized with Custom Transmission, Hankook Tires, Custom Strut Bars, Custom Brakes, Custom Engine Comps., Custom Exhaust, Custom Header, Custom Intake, Custom Springs, Haltech Perf. Chip, Eagle Alloys Wheels, KYB Shocks, Custom Ignition, G-Tech Engine Electronics, OBX Gauges - 20

The Cylinder walls were etched with rust and needed to be bored out. I search high and low, but could not find Stock overbore pistons...Isuzu, Lotus, nobody had a set. That meant that I had to go Custom. I got a set of Forged pistons from Ross Racing Pistons made for $600: 9.35:1CR flat top with valve reliefs, .030" Overbore, Ross Racing Molly rings ($75), 4340 Chrome Moly Tapered Pins($22each), Reinforced pin bridge($27 extra)

rblair01's 1991 Geo Storm Colorado Springs, CO Customized with Custom Transmission, Hankook Tires, Custom Strut Bars, Custom Brakes, Custom Engine Comps., Custom Exhaust, Custom Header, Custom Intake, Custom Springs, Haltech Perf. Chip, Eagle Alloys Wheels, KYB Shocks, Custom Ignition, G-Tech Engine Electronics, OBX Gauges - 21

Since the turbo was scrap metal, I needed a replacement. I found out that the 1989 Ford Thunderbird Turbocoupe used the same center cartridge as the Impulse RS, but has a larger compressor wheel. (IHI RHB5) So I found one, rebuilt it, and ceramic coated the compressor housing/center cartridge/exhaust shield/turbine blades.

rblair01's 1991 Geo Storm Colorado Springs, CO Customized with Custom Transmission, Hankook Tires, Custom Strut Bars, Custom Brakes, Custom Engine Comps., Custom Exhaust, Custom Header, Custom Intake, Custom Springs, Haltech Perf. Chip, Eagle Alloys Wheels, KYB Shocks, Custom Ignition, G-Tech Engine Electronics, OBX Gauges - 22

I also ceramic coated the exhaust manifold and O2 sensor housing

rblair01's 1991 Geo Storm Colorado Springs, CO Customized with Custom Transmission, Hankook Tires, Custom Strut Bars, Custom Brakes, Custom Engine Comps., Custom Exhaust, Custom Header, Custom Intake, Custom Springs, Haltech Perf. Chip, Eagle Alloys Wheels, KYB Shocks, Custom Ignition, G-Tech Engine Electronics, OBX Gauges - 23

After the head got a 3 angle valve job, I ported the intake and Exhaust, opened them up to match the gaskets- an extra 2mm per port

rblair01's 1991 Geo Storm Colorado Springs, CO Customized with Custom Transmission, Hankook Tires, Custom Strut Bars, Custom Brakes, Custom Engine Comps., Custom Exhaust, Custom Header, Custom Intake, Custom Springs, Haltech Perf. Chip, Eagle Alloys Wheels, KYB Shocks, Custom Ignition, G-Tech Engine Electronics, OBX Gauges - 24

I couldn't stop there, so I ported the turbine housing, wastegate, exhaust manifold, secondaries, and intake plenum.

rblair01's 1991 Geo Storm Colorado Springs, CO Customized with Custom Transmission, Hankook Tires, Custom Strut Bars, Custom Brakes, Custom Engine Comps., Custom Exhaust, Custom Header, Custom Intake, Custom Springs, Haltech Perf. Chip, Eagle Alloys Wheels, KYB Shocks, Custom Ignition, G-Tech Engine Electronics, OBX Gauges - 25

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Vehicle Owner

Member ID: rblair01

Location: Colorado Springs, Colorado