Idea ive had for a wile.... Options

[mandrek]

So here it goes, i have a 95 ST (7afe). that i DD and do auto-x with. i have been looking at doing a few mods to help with reducing paracitic drag off of the week 7A motor, and have come up with a few ideas that i would like to run by u all.

i have read a number of threads on hondas taking the MR2 EPS pump and running the set up as to remove parasitic drag off the motor. now, here is what i have been thinking of doing for a wile now, it should be a pretty simple set-up, but am looking into getting some info on the topic before i make the plung..

currently the PS and the water pumps share a belt on the 7A.

what i have thinking abut doing is adding a small electric motor to that side of the motor and remove those two pumps from pulling off the crank. sorta like this.

E-motor
(o)\
|----\
|-----\
(o)_(o)
^----^
PS-----water

not only would this remove 2 sorces of paracitic drag from the crank, but it would also avoid the water-pump from developing cavitation at high engine RPM's AND allow for the PS to be at full boost almost all the time..

the car is still not a dedecated track car so the on/off full PS boost may not be compleatly nesisary, but still an advantage wile auto-xing.

let me know what u all think.. looking for ALL input good or bad..

This post has been edited by mandrek: Mar 25, 2010 - 7:49 PM

[rave2n]

You will need to upgrade your alt, that is a must.

Umm, side note. 25% eff. loss on the electric motor starting, thats incorrect. Its much less, still viable to look though.

"There is a reason every car manufacturer powers their water pump and other accessories from the engine directly, because there is a 0 percent loss there"

This statement is also quite false. They go with a pulley type system because its cheaper, not because its a bad idea. Its also easier, and a standard that has been used in cars for a long time. Most mechanics are not electrically inclined persay. Saying that there is 0 percent loss from powering the pump and such ..... I think common sense will enlighten that one, I don't need to expand further.

This is a completely viable option, if you have the time to fabricate, and do the MATH correctly. You can make up for the strain on the electrical system. You also need to factor in any mods that you've put on the engine that increase its eff. Also remember to adjust for this change, as your engine runs according to spec, taking this much strain off of it, I can only assume would need adjusting.

I'm also no making assumptions, but I also don't need to title drop to prove my point. I've brainstormed this with many intelligent minds, and it can be done....efficiently. Not to mention...its already being done.

This post has been edited by rave2n: Mar 30, 2010 - 12:53 PM