anyone? i am curious if they noticed any gains.

well seeing as how they prolly take 1 hp to drive this would be a rather useless mod considering and electric water pump draws about 15 amps...you'd be supplying that thru the alternator(which will pull HP away)....this in the end loses more HP then it gains...plus there is no reason to switch to a electric if the mechanical works fine....if it's not borken don't fix it right??

jeremy

Plus electric water pumps are not designed to be driven on the street for continuous use. there service life is pretty short and if it does short out on you a couple things. 1) you are screwed untill you order another one and get it and 2) they aren;t exactly cheap.

Eric

It sounds like a pretty cool idea though!:D

they say right on the package for DRAG Race use only...very short lifespans compared to a mechanical.

jeremy

The stock w/p runs off the timig belt, It would be very difficult to eliminate it, unless someone makes a bolt-on idler pulley kit.

You could modify the stock one. Like cutting off the impellers on the pump.

someone makes this kit for honda drag cars....i forget the name of the company but i have see it done.

jeremy

i didn't know they had short life spans.
i thought this would be good to get a few couple horse's, when you have done pretty much everything else.
thanks for the info.

Originally posted by cvcsmkr
i didn't know they had short life spans.
i thought this would be good to get a few couple horse's, when you have done pretty much everything else.
thanks for the info.

this is a good idea on old cars where the water pumps just sucked up HP...but on today's belt driven pump spin freely and really eat no HP doing it.

Jeremy

Originally posted by HndaTch627
this is a good idea on old cars where the water pumps just sucked up HP...but on today's belt driven pump spin freely and really eat no HP doing it.

The pump still uses HP. (It takes power to make stuff move, in this case water.) Still, as mentioned above, I'm sure the mechanical pump uses less power than an electric pump would cause in alternator load. An electric pump would only make sense if you had a drag car and ran with the alternator disconnected.

Originally posted by AllWheelDrift


The pump still uses HP. (It takes power to make stuff move, in this case water.) Still, as mentioned above, I'm sure the mechanical pump uses less power than an electric pump would cause in alternator load. An electric pump would only make sense if you had a drag car and ran with the alternator disconnected.

IIRC the honda kit saved only 2 or 3 HP @ the flywheel....and cost about $500

Jeremy

$500......thats it!
just kidding.
ok, so i guess the electric water pump idea was shot to hell!
thanks for the replys

I'd like to expand on cvcsmkr's question a little...what about electric power steering? Would the gains be more substantial than an electric w/p? What about the alternator load?

the new civic si had electric power steering. i just read that in the new scc yesterday. i'm betting it requires a pretty beefy alternator.

There are some older Subarus that had electric power steering pumps. Alot of the rally car guys use them! Sounds like a good idea to me!! It doesn't have to run all the time, just while turning!

there are NO pumps on the electric systems...they use a VERY high power motor in the power steering rack for low speed manuverability and then rely soley on driver input at speed. oh yeah might i add that this system is EXTREMELY pricey...why are you intent on saving 1 hp @ the motor?? get a set of volk wheels that weigh nothing and lighten your rotating mass.

sorry just venting...

Jeremy

i agree with hndatch.
if it will cost a ton of money for going with electric steering or pump. i would rather save weight in wheels and body. that would probably a lot cheaper. you can save .1 on your 1/4 mile for every 100 lbs. so with that info i know 4 hp wont gain .1 on the 1/4 mile.
but if their are some scooby owners out there and have done absolutely everthing else and have more money to waste, then go ahead with the electric accesories.

i have heard of cars getting 10 hp @ wheels from removing smog pump and going to electric waterpump. (as an example)

so if its true that our accessories are very effiecient then its not worth looking into.

Originally posted by cvcsmkr
i have heard of cars getting 10 hp @ wheels from removing smog pump and going to electric waterpump. (as an example)

so if its true that our accessories are very effiecient then its not worth looking into.

yeah on OLDER vehicles....the modern day smog pumps are actually routed to a point where they make HP rather then costing it. and our cars don't suffer the power steering problems like GM's and Fords.

Jeremy

The new Honda Civic SI has an electric power steering pump. That's what I read anyway!

Originally posted by LVSUBARU
The new Honda Civic SI has an electric power steering pump. That's what I read anyway!

you are mistaken...it has an electric power steering rack...there is no pump...the S2000 and insight already have this on them...nothing new.

jeremy

So it's steer by wire? Is there still a mechanical linkage from the steering shaft to the rack? Benz is useing this set up on there new models I heard.

no the linkage is all still there but it uses a revolution sensor on the input gear to determine how much assit is needed....there's just no power steering pump/fluid/lines.

jeremy

Well if you are intent on this electric power steering rack then here you go. You "MAY" be able to frankenstein a electric rack from an older Subaru XT-6 onto there but I don't know if it would fit or not. Also finding one would be difficult as it was an option that was not too popular ( Hence no longer being used) also the eleectrical's on that thing are a friggin nightmare ( trust me I just did one last week)

Wrong. Toyota MR2s use an electric pump and a standard rack. http://www.driveev.com/jeepev/convpgs/psteer.php

Wrong. Toyota MR2s use an electric pump and a standard rack. http://www.driveev.com/jeepev/convpgs/psteer.phpyou just bumped a 5 year old thread....congrats

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