then someone else suggested that the rack replacement was the way to go.
I'm wondering how much of a pain this would be. I mean, I know I can replace the steering rack. That isn't too difficult. I'm wondering though if I will notice any mpg gains from going to non-power steering. Any thoughts? What type of improvement would anyone expect to see by removing PS? If it yielded 2 mpg I'd do it in a heartbeat.
The mpg gains are in the extra free power. You could say the same thing in two ways: "killing power steering means less drag on the engine, freeing up more power" or "killing power steering allows the engine to do less work 100% of the time, resulting in greater mpgs." I think most people just cut the lines to it and leave it in there.
What type of improvement would anyone expect to see by removing PS? If it yielded 2 mpg I'd do it in a heartbeat.
if it were summer i'd go borrow my mom's car (camry) and do a quick scangauge test for you . (the firefly is manual steering.)
alas, it's -15C (5F) and snowing lightly at the moment and i'm not inclined to be outside tinkering on the car.
if i had to guess, i'd say it would be a few percent difference. clearly it's enough of a difference that manufacturers have shifted from "always on" hydraulic power steering pumps, to speed-sensitive variable hydraulic pumps (my 89 accord had this) to electrically driven pumps.
If you do decide to remove your power steering pump Matt, I would recommend one of two things - replacing the rack, or installing a lubrication kit.
A few issues back in Honda-Tuning they showed an install of one of these kits. Pretty much, it's a fluid reservoir and some lines to keep power steering fluid around the rack. Granted it isn't being pumped through the rack, but it needn't be, as the pumping action is what gives the power assist. If you're not wanting to change the rack and are interested in this option, I'd be happy to dig though my archives and find the info for you.
If you go the route of replacing the rack, there are a few things. Try to mark the steering column u-joint before unbolting it, or you may spend some time trying to get your steering wheel straight after installing the new rack. You'll need to attempt to get the other rack close to the same position before you install it. You will still probably need to tweak it some. Second thing is to get an alignment immediately after you install the new rack! Other than that, it's easy - unbolt the steering u-joint, drop the exhaust downpipe and shift linkage, pop loose the steering ball joints, remove four bolts, and fish it out from under your car.
I'm assuming you're doing this on your ED3? I'm considering fully rebuilding my non-power steering rack on my ED6 very soon.