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Old 10-18-2020, 11:51 PM   #1 (permalink)
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Black and Green - '98 Honda Civic DX Coupe
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Modify this Geo Metro

Trying to help out my friend Ned Flanders... He loves the efficient practicality of the Geo. However, what modifications should he consider for his Geo to help him in "power-on-demand" situations like this:


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See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.



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Old 10-19-2020, 12:45 PM   #2 (permalink)
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Nitrous oxide injection? Propane flame thrower?
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Old 10-19-2020, 03:28 PM   #3 (permalink)
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Lose the dead weight (kids) and floor it. They move pretty good in the lower gears, not weighing much.
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Old 10-19-2020, 03:38 PM   #4 (permalink)
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Turbocharger.
Or find a bigger geo storm engine.
Nitrous is cool is cool but it has a start sequence. Have to open the bottle, purge the gas from the line (recommended), get the engine above a certain RPM usually 3,000 to 3,600.
You don't want to leave the bottle open, nitrous could seep past the nitrous solenoid and fill the intake with nitrous then the intake on your car blows up because it's full of pure nitrous.
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Last edited by oil pan 4; 10-19-2020 at 03:48 PM..
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Old 10-19-2020, 04:17 PM   #5 (permalink)
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For "on-demand" power, maybe something like Volvo's transient supercharger fitted to its T8 hybrids.
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Old 10-19-2020, 09:31 PM   #6 (permalink)
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It's the same answer as in any car- a manual. If your most powerful stock setup is 79hp, why on Earth would you hide even one of those horses behind an automatic?
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Quote:
Originally Posted by sheepdog44 View Post
Transmission type Efficiency
Manual neutral engine off.100% @MPG <----- Fun Fact.
Manual 1:1 gear ratio .......98%
CVT belt ............................88%
Automatic .........................86%

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Old 10-19-2020, 09:42 PM   #7 (permalink)
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Easiest thing I can think of is put a micro switch some where along the throttle linkage to turn off the A/C.
Oh my switchable cold air and thermostatic intake worked pretty good.
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Old 10-20-2020, 12:34 AM   #8 (permalink)
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The solution I hit on with the Superbeetle was to leave the engine stock and resize the front tires. The [left front-driven] speedometer is ~12% optimistic.

A mechanic that road tested it was really impressed until I told him.
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Old 10-20-2020, 08:20 AM   #9 (permalink)
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Quote:
Originally Posted by Fat Charlie View Post
It's the same answer as in any car- a manual. If your most powerful stock setup is 79hp, why on Earth would you hide even one of those horses behind an automatic?
79 hp = 1.3 L (BIG BLOCK)

55 hp = 1.0 L (little block)


If only I had those 24 extra horses of ground shaking power from the Big Block motor...

Men would envy me, Women would want me, Children would cheer me...

I’d be the Stoplight to Stoplight king of the blacktop .... 🤴





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Old 10-20-2020, 08:52 AM   #10 (permalink)
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