School me on electric water pumps.

Quote:

---

At what point, should an electric pump be considered?
Is it an HP or RPM question. Too much of either making it more prone to throw belts?

How about when there will be an alternator in the mix as well? Alt will have a micro switch that shuts it off under full throttle.

I've looked at the Meziere, Moroso and Summit electric pumps that just bolt in place of the stock-type unit.
Are these constant duty pumps that will live on street driving as well?

An electric pump will make pulley alignment easier given the new motor plate and alternator. Just have to align the alt to the crank if I were to go electric pump.

Just wondering if they hold up to constant duty driving to local cruises, etc., or if they're designed to just work for 1/4 mi bursts.

---

I know of alot of guys running them on their street
rods(I do also), they flow plenty for the street.
Most likely your pulley's have a alignment issue
to pitch the belt unless its a SUPER long belt. I
have been running a alt belt turning 8000+ rpm and
never pitched it. Look at the alignment when the belt
is tight... also take the belt and lay it on a flat
surface, if its bowed up its a alignment issue

Quote:

---

Mancini Racing has pulley spacers if that is what you want. They sell a 0.375 thick spacer for the crank pulley to match the 0.375 thick motor plates.

---

Quote:

---

here my meziere, works great

---

Quote:

---

You must have the wrong set of pulleys then. Might be easier to just buy the correct pulley's and then you only need the one .375 spacer and it will all line up.

---

You're right. Offset on my pulley is 1.5". Correct should be 2". I "think" the balancer is a little thinner than stock (maybe .100") so that plays in as well.

It was previously set up with .250" plate, .850" crank pulley spacer and 1.5" offset pulley. That "should" have put the crank pulley .100" out past the w/p pulley but it didn't, they were aligned. That's what leads me to think the balancer is a little thinner.

I may very well just get the electic water pump, correct crank pulley and then just set up the new alternator to align with the crank pulley, wherever it ends up.

Quote:

---

---

Summit has their own pumps now too. Sport440 i have one of the summit pumps on my car. which if you take the summit sticker off is a CVR pump. MY old 65 plymouth with my old 440 used to run 10.80 in the 1000 ft. All i did was add 1.6 roller rockers and add a moroso electric water pump drive. After thoses changes i ran back to back 10.40 in the 1000 foot.Here is a pick of the summit water pump. Mopar65

Quote:

---

Let me ask this, How much of a weight gain is there over the old cast iron water pump, compared to the all new self contained electric units sold through CSR/meziere unit? Besides the 10-15 hp gains.

---

The meziere pump for a BB is 7# The aluminum MP WP housing and pump with moroso motor is 14.5#

The stock WP housing and pump weighs 21# add pullys and 1.5# Moroso motor and your looking at 23 to 24#

So your looking at a 15# + minimum difference between a Meziere and a stock steel housing,pump and moroso motor.

Info from "sport440".

Quote:

---

As far as the pumps motors continuous duty, Meziere claims 2000 hours.

And as comparison Summit claims 10,000 hours.

---