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Old 10-07-2013, 05:31 PM   #7 (permalink)
cbaber
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Lean and Mean - '98 Honda Civic HX
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Quote:
Originally Posted by Mystery_man View Post
Use a phone to reply, so will be a tad all over the place. The trans that is in the car is a stock 90 cable dx. I have a 95 dx with quaffee diff already installed. Would that work better for now till I can invest more into the car?

Onto the flywheel. It would free up weight and make the engine more efficient in turn improve mpg as well as make hp that would make it easier to move around my toy car?

These are all parts that I have not that I intend on purchasing.

Would multi point efi be more efficient than the stock dual point?

I am kind of thinking as I am posting. I am geared towards power and speed. I don't think it differs all that much.

Body mods I will do some research on, but think I know the direction. Should work in same ways as road racing just without the parts that cause drag.

I have a full shop at my disposal, so the sky is the limit.
Ahh ok that makes it interesting. The 88-91 Civics had cable clutch systems, and 92+ have hydraulic systems. Therefore you couldn't put the 95 transmission on the 1990 Civic unless you converted the car to a hydraulic setup. Not to worry, the 1990 DX transmission is fine. The DX/LX trim levels of all Civics generally had higher gearing than the EX/Si trims, so those are preferred. However, certain MPG-oriented Honda's had even taller gearing, such as the CRX HF, Civic VX/CX, and Civic HX. Since you have a cable tranny, try to find a CRX HF transmission to swap in. It would be a direct bolt-in, and its geared tall for fuel economy. If you had a hydraulic setup, the 1992-1995 Civic VX/CX transmission is the best choice.

Lighter flywheels don't have a big impact on fuel economy. They are not parasitic like power steering. Flywheels store energy. Racers like them because they allow the engine to rev faster. They don't actually increase HP a significant amount. Switching to a lighter flywheel in a street car just makes it harder to drive. You would need to rev higher to take off. You would have trouble lugging around at 1200 RPM. Overall, you take away an essential part of hypermiling, which is driving at the lowest RPM possible. This is a hot topic here, mostly because the Honda Civic VX came with a lighter flywheel from the factory, but I have seen no proof that a lighter flywheel improves fuel economy.

MPFI is better than DPFI. Plenty of people sell the parts needed to do the swap. It would probably yield more power and better fuel economy.

Sell those 17's ASAP. Big wheels with low profile tires are bad for more than just fuel economy. Steelies are fine, and cheap. If you want to spend money and make the car look better, try finding a set of Civic VX or Civic HX wheels. They are factory alloys that are lightweight. Pair the smaller wheels with a set of low rolling resistance tires and you're set.
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1998 Honda Civic HX - My Project Thread

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