Disable Power steering - Fuelly Forums

Android Users - Coming Soon! - Migrating from aCar 4.8 to 5.0

Reply
 
Thread Tools Display Modes
 
Old 10-28-2007, 04:45 AM   #1
Registered Member
 
brucepick's Avatar
 
Join Date: Feb 2007
Posts: 722
Country: United States
Location: Connecticut
Disable Power steering

I'm considering removing the belt that runs the power steering.
It also runs the a/c which hasn't worked for many years.

A/C compressor is clutch-driven; I'd suppose there are slight losses in spinning the clutch even when not engaged. However bigger losses in running the p/s pump constantly.

Any thoughts or comments?
Steering is lighter now with 46 psi in front and 44 rear. So it might be reasonable to drive with p/s disabled.
__________________

__________________
Currently getting +/- 50 mpg in fall weather. EPA is 31/39 so not too shabby. WAI, fuel cutoff switch, full belly pan, smooth wheel covers.

Now driving '97 Civic HX; tires ~ 50 psi. '89 Volvo 240 = semi-retired.
brucepick is offline   Reply With Quote
Old 10-28-2007, 06:14 AM   #2
Registered Member
 
Join Date: Apr 2007
Posts: 336
Country: United States
i took the ps and ac off in my civic, its not that hard. my ac also didnt work so i just took off the belt and the compressor (save pounds) and the power steering, take off the belt and put a manual steering rack on it, and plug the 2 holes that the power steering fluid goes to.

my mpg wasnt really that noticable, but the car certainly has more power as its freed up power
__________________

civic94 is offline   Reply With Quote
Old 10-28-2007, 09:17 AM   #3
Registered Member
 
kickflipjr's Avatar
 
Join Date: Sep 2005
Posts: 933
Country: United States
I think someone did a test on removing ac/ps belts. It showed a slight increase in mpg 1-2. I will find it, just wait a sec...


Here:

http://www.gassavers.org/showthread....power+steering

According to these tests AC drag is worse then PS drag.
__________________
2008 EPA adjusted:


Distance traveled by bicycle in 2007= 1,830ish miles
Average commute speed=25mph (yes, that's in a car)
kickflipjr is offline   Reply With Quote
Old 10-28-2007, 09:22 AM   #4
*shrug*
 
Join Date: Sep 2005
Posts: 6,195
Country: United States
I think dyno tests usually show it as a couple of spare horsepower. I really like that my car never came with power steering, boo yah.

Is there a chance you can swap in a manual steering rack?
SVOboy is offline   Reply With Quote
Old 10-28-2007, 06:08 PM   #5
Registered Member
 
brucepick's Avatar
 
Join Date: Feb 2007
Posts: 722
Country: United States
Location: Connecticut
My concerns are really about risk of damage to the rack from lube not circulating or to the crank pulley which is a harmonic damper, with a middle rubber ring. Any comments on those?

Yeah, could swap in a manual rack. Last used in the '79 model year so probably getting a bit scarce. Plus time and money are at a premium.

However it's SO easy to remove the belt that I'm tempted. A box cutter will do the job if I don't care about keeping the belt. Or I hear one can remove the belt using a screwdriver between belt + pulley, and breaker bar on the crank bolt to rotate the crank.

This afternoon I tested steering the car with engine off, while rolling forward from a stop on a gentle incline. Easily done. And of course at higher speeds should be even easier. However I suspect much more difficult if I bleed out 10-15 psi tire air to get back to pre-hypermiling status.

I'm currently swapping synthetic ATF into the p/s system. Old Volvo's p/s runs on ATF, any type is fine. One or two more empty/fills of reservoir should do it.
__________________
Currently getting +/- 50 mpg in fall weather. EPA is 31/39 so not too shabby. WAI, fuel cutoff switch, full belly pan, smooth wheel covers.

Now driving '97 Civic HX; tires ~ 50 psi. '89 Volvo 240 = semi-retired.
brucepick is offline   Reply With Quote
Old 10-28-2007, 06:13 PM   #6
Registered Member
 
brucepick's Avatar
 
Join Date: Feb 2007
Posts: 722
Country: United States
Location: Connecticut
Quote:
Originally Posted by SVOboy View Post
I think dyno tests usually show it as a couple of spare horsepower. I really like that my car never came with power steering, boo yah...
I like that a lot. I think dyno wouldn't show any mpg info because it reads hp.
BUT what you do with that power is your choice. Use it to go faster and mpg stays the same. Let up on the gas a bit and drive with same speed and acceleration as before, that way mpg should go up. With hp freed from driving the accessories, it's available to move the car, so at any given moment you actually demand slightly less total hp of the engine.

Not too different from aero mods that way. Anything that's a load on the engine - if you can reduce it or remove it, can be a gain in FE.
__________________

__________________
Currently getting +/- 50 mpg in fall weather. EPA is 31/39 so not too shabby. WAI, fuel cutoff switch, full belly pan, smooth wheel covers.

Now driving '97 Civic HX; tires ~ 50 psi. '89 Volvo 240 = semi-retired.
brucepick is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Looks like the price you entered for a litre of gas is unrealistic. winstona Fuelly Web Support and Community News 6 05-12-2013 11:26 AM
Over 100 Gallons twbhd04 Fuelly Web Support and Community News 14 06-20-2011 09:09 AM
inventor of the ScanGauge MetroMPG Hypermiling 25 02-21-2007 06:56 PM
Electric bikes banned in Chinese city to make room for cars MetroMPG Electric and Solar powered 4 11-24-2006 08:29 AM
Awesome, awesome, awesome: recumbent "tri-brid" - human/electric/sail MetroMPG Electric and Solar powered 4 11-03-2006 04:02 AM

Powered by vBadvanced CMPS v3.2.3


All times are GMT -8. The time now is 11:52 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.