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Old 01-14-2009, 03:53 PM   #14 (permalink)
3rdgencivic
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Join Date: Jul 2008
Location: North Georgia
Posts: 7

Rusty - '87 Honda Civic Si
90 day: 34.64 mpg (US)

Big Heavy Pig - '91 Acura Integra GS
90 day: 32.88 mpg (US)
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Funny, a buddy and I discussed doing this with the civic (the one in my avatar) when a busted timing belt resulted in crashed valves a couple months ago. I located a motor at NAD in Atlanta for ~$500. Obviously the Civic wouldn't have the aerodynamic advantages of the CRX, but the D15A1 is a bit of a gas hog compared to the carb'd motors. As the car is my DD, I ditched the idea in favor of "cheap & easy."

As far as fitment, space should be of no concern. There are plenty of guys running massive turbo B-series motors in these cars. The usual suspects would apply for mounting issues, but a case of beer and a welder can yield free solid motor mounts in an afternoon. Driveshafts would be the big pain, but I've seen guys dirt-track on half CRX/half (whatever the donor motor is) shafts welded together.

Swap the wiring harness and make sure fuel delivery is adequate, and voila, you've got hypermiling, fuel injected goodness. As Daveedo pointed out, it might be a lot of work to go through to get similar gas mileage to the HF, but the advantage of not having to deal with 80 gazillion 20-year-old vacuum lines, combined with the fact that pre-88 Honda motors aren't showing up on containers anymore, might be worth it. The sheer "cool" factor is pretty high too, IMO.
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