electric water pump questions

G

Greenemachine

Registered
ok I have looked for this info and also asked joe but he hasn't gotten back to me yet. I am wondering if this upgrade is good on a daily driver. I want the extra power it adds, however I am not sure how realiable they are when it comes down to the use every day. umm if anyone can tell me some facts about them.
 
RE: electric water pump questions

There's no free lunch.The power that turns the waterpump will come from the alternator instead of directly from the crankshaft.With the many reports of alternator failures,I went through three myself,I wouldn't put any more stress on the alternator than I had to.
 
RE: electric water pump questions

It'll run off the battery if the alternator dies anyway. Put in a good alternator and it'll last you a lot longer than a cheap rebuilt one. Make sure you have a fully charged battery when you install the alt or it will kill the alt a lot faster, if not immediately.

You should gain a few hp with an electric water pump and see a noticeable decrease in 1/4 mile time. Not a huge difference, but a noticeable one.
 
RE: electric water pump questions

I know it will run off the alt and i have a cobra alt as well. plus I have a yellow top optima batt. I plan on getting an upgraded alt someday but for now this will have to do. how about my origional question as to realiablity with a daily driver? are electric water pumps more for just the track? and I would like to get headers instead however funds do not allow me to get that for xmas.
 
RE: electric water pump questions

Here's my take, yeah there's no 'free' lunch but you don't need to be a glutton either!

The belt driven water pump is wasting HP at higher RPM's beyond what the cooling system requires. The electric pump is a constant speed and therefore constant load. The mechanical driven pump requires more HP with more rpms, period. The difference at any rpm is the HP gain at that rpm.

I plan on installing one this winter or in the spring so perhaps I'll have some personal experience to pass along at a later date. In preparation for it though I have a new hi-performance alternator and a new dry-cell Odyessey battery.

IMHO if you have a problem with the electric pump it will be the charging system. My rebuilt alternator was only supplying 20 amps at idle. The new 160 amp alternator from PA-Performance is advertised to be 80 amps at idle. I measured 50+ amps output at idle with everything on the Mark VIII(including the cooling fan on max). So I still have some overhead available for the additional load of the electric water pump. I would not recommend you get the electric pump until you upgrade the charging system. I guarantee if you only have 20-30 amps available at idle, you will be discharging the battery at idle. If you have a yellow top Optima, it will help, but it too will be depleted sooner than you think.
 
RE: electric water pump questions

after said that sceond pist bout the alt, i was thinking of getting a 130 amp but dam they have 160 now that would be a great add on
 
RE: electric water pump questions

yea I know the marks draw lots of power. and my stereo doesn't help too much, neither does the trans cooler fan. however I have a 160 amp alt and if i have like $250 to spend I will get a much higher amp alt. I rarely turn up my stereo around town, only on the hwy so no idle there and i have 4.10's so my rpms are usually between 2,500 and 3,000 rpm. so yea I'll let everyone know how it goes, this is now my new christmas present.. :)

ok so next question I know to get the meziere pump for the 4.6. goes for $334. what else do I need? what kind-of instalation kit should I get? and I'll probally ask how to wire it when I get the damn thing or maybe not.
 
RE: electric water pump questions

go to summit or jegs and get a painless wiring kit for electric water pumps is the easiest thing. Works good for me.

BTW I was looking at getting an optima battery for my car. Which one did you go with since they don't make the same series as what fits in the mark. (Group 65) DId you have to do something to mount it?
 
RE: electric water pump questions

umm i don'thave the batt mounted but it doesn't move in my car. i have a 0 gauge wire that runs next to it and a huge fuse cover. sorry i couldn't help ya out on that 1
 
RE: electric water pump questions

I have a Meziere pump. I only have about 1000 miles on it. I also have an Intercooler pump 10amps, a T-Rex fuel pump, MSD DIS4 and a PA Performance high output Alternator and I havent had a problem at idle or a cooling problem. There are also some other electronic gauges and wide band o2 sensor.
Keith
93 BLACK
93 MAROON
Only use the brakes to stop and get gas.
 
RE: electric water pump questions

I have the meziere also. I have run it for 6 months/3000 miles no problems so far. Works great.

Keith did you get the 160 amp from Pa also? MIne came from a dealer on Ebay and just don't feel safe with it.
 
RE: electric water pump questions

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I have the meziere also. I have run it for 6 months/3000 miles no problems so far. Works great.Keith did you get the 160 amp from Pa also? MIne came from a dealer on Ebay and just don't feel safe with it.
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did you notice a difference? any track results?
 
RE: electric water pump questions

Good Question

Sounds like a good idea. Please let me know much horse power would it free up? How much would the pump cost? How long is pump expected to last? Would the new electric pump max out you charging system when the lights and AC was on? How would you reroute the belt?

Let me know what you find out.

Thanks
Phillip

aka okiephillip@yahoo.com

Q has anyone put an MSD ignition on a 95 mark Vlll?
 
RE: electric water pump questions

Welcome! :)

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Please let me know much horse power would it free up?
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My best guess would be about 10 HP, good enough for a little under a tenth in the 1/4 mile. Most noticeable in the upper rpms.

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How much would the pump cost?
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http://store.summitracing.com/partd...400027+4294908331+4294838996+115&autoview=sku

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Would the new electric pump max out you charging system when the lights and AC was on?
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If it was marginal.

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How would you reroute the belt?
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It uses the same belt as it has an idler pulley the same diameter as the stock water pump pulley.
 
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