well, ive wanted to run a electric waterpump for awhile, but i couldnt justify the cost.. esp when all of my waterpumps (including my extra backup ones) work perfectly...


i just came across one so im going to be putting it in.

now i know this belt routing will work, even without the idler pulley. ive run it from the PS pump to the crank before, and it doesnt slip at all.

my setup would be the last two.. from crank, past where the smog was, to the AC, then tensioner, then alt, then PS back to crank. by going around the waterpump area completely, i can stick a elec waterpump there.

 

DUDE 1,

When I first saw the topic line, I though this was another one of those "Radiator for Volkswagen Beetle" type threads. Then I remembered that some electric coolant pumps are simply an electric motor conversion. Then I realized that you might be talking about exactly what you are.

It seems you've already done your homework. I'd vote for the last example, but I'm not certain how/where you would mount that last idler, since the timing cover just isn't that substantial or robust. You'll also want to maintain a reaasonably large diameter on the idler, or you'll have ridiculously high RPMs on it and need a high-precision, partial compliment bearing for it.

 

lol, honestly, i messed up when i did my smog pump delete the first time, and i had it from the alt, to the water pump, to the PS pump, then the crank... and it never slipped. so i dont think it will be a prob.

however, i was thinking... why put the idler there? it would be packed and not wrap much more anyway.... so i came up with this idea:

now the idler isnt to scale, but basicly, its as large as it can get and as low as it can get without the belt hitting the pump or itself.

for mounting, it can use a very simple bracket thats bolted to where the smog pump was.

 

You have deffinately done your HW and you are the first person I have seen to consider this. I have always wanted to do this myself but never got around to figuring it out. Anywhoo, I think you are going to need some sort of idler pully to get more pulley wrap. It seems if the last option you have drawn would be the best but I cannot see that running without any serious slip. Especially once the rpms go up and pump demands increase while cornering and such. What about going with a smog delete pulley and re routing the belt using that?

 

last one as in the seperate pic, or the last one as in the one with the tiny idler in the big first pic? where would you see as a place with the potential for serious slip in the last one? as far as i can see, there is more wrap on the crank and PS pump then stock on the last pic, and the same wrap on the alt and AC (yes im keeping AC)

could you explain what you mean further? possibly with a pic?


ooooh, i did just get another idea based ont he last pic... i'll draw it up..

 

edit: doh. ignore this

 

how about this?


it still has the large idler.

it could be made to retain the same belt im using now or even the stock one..

it has the same PS wrap as stock, more crank wrap, more AC wrap, and you dont have the long streach between the AC and crank that most !airpump belt routings have.

 

I goofed on which one I told you was best. Here is a pic I stole off your first post. I think this will be your best bet but isnce they is hardly anything loading the PS pump I think it will slip especially under hard cornering and high RPM's.

The super presice red arrow shows where i think slip will occour.

 

ooh.... no worries there.


look at the first one at the top of the thread... thats the same wrap as the stock setup

 

What would be the belt part number or length of belt?