350 groundpounder

iTrader: (5)

Should i go with the meziere 43gpm or 55gpm hd version for a DD lt1. They offer this summit ewp for a good price too.

StealthFormula

iTrader: (35)

For a DD I would just use the stock pump. I would only consider an EWP for a weekend warrior or all out drag car. The slight potential hp gain isn't worth the potential hell one could cause a DD if it fails. Just my .02

350 groundpounder

iTrader: (5)

Car is getting a cam, figured it would take some stress off of the cam and cam bearings. It gets driven about 3 days a week. I would set up a temp warning light also.

BALLSS

I would get the Meziere. IIRC Summit is CSR

FWIW I have had the Meziere HD (55 gpm) on for about 17 years and 90k mi

You can wire up a "light/buzzer" of some form if you want....I find my temp gauge works just fine. I drive in S. Calif. in rush hour traffic, 100+ summer heat and several 600 mi round trip Vegas runs with 11x temps outside

Bought a spare 15 years ago in case it ever died that I keep in trunk. It would take just a few minutes to swap

Catmaigne

iTrader: (6)

Summit isn't CSR, it's CVR. I have one on my Roadmaster without complaints... so far. I got it in a package deal with a ton of other parts that was too good to pass up, otherwise it would have a Meziere.

The old Jegs EWP that was on the car before **** the impeller bearing/seal after 2 years or so. Total junk.

I have a Meziere HD on the Camaro and hope to use it for a long time.

SpeedJunkee

My question, is why not just go get a CSR waterpump? I bought mine direct from the company and it cost like $195 after tax and shipping, which is basically what you'd be paying after Summits handling fee for the Summit brand one, and your still way cheaper than the Mezierre.

350 groundpounder

iTrader: (5)

CSR flow like 35gpm which is fine but the meziere 118hd flows like 50-55gpm.

Catmaigne

iTrader: (6)

Those are both free flow ratings. The HD Meziere installed is more like ~22 GPM. I would only go with the high flow EWPs because of this.
The Summit pump is not CSR though. It is a CVR with a 55 GPM free flow rating.

350 groundpounder

iTrader: (5)

So the summit pump technically flows as good as the meziere hd? Im leaning towards the meziere.

Catmaigne

iTrader: (6)

Allegedly

SS RRR

iTrader: (2)

Eh, lots of testimony on how the Meiziere has been on cars for more than 10 years without issue.

Nah. Because it's driven off the axis of the cam there's really no load on the bearings.

sweetbmxrider

iTrader: (13)

lt1-xjs

The CSR is good, on my second in like 13 years. Mine actually says CSI on it.

SpeedJunkee

I would not concern yourself so much with the GPM. Either will be MORE than enough for nearly any setup you could dream of. I would worry more about the quality, then for me personally the price.

Both will flow more than you need. Both are reliable. One costs a lot more than the other. That's my .02

BALLSS

The HD Meziere (55 GPM) is about 3/8" longer than the regular one...if space is a issue. IIRC some on F-bodys have to trim a small amount of fan shroud to clear it which is no big deal

just use a good relay & fuse to wire it up

SS RRR

iTrader: (2)

That has to be done regardless if it's the standard or HD, but yes, no big deal.

smitty2919

What?? How is a EWP failing any more of an issue than a mechanical one?

PLENTY of people have DD and race with a EWP. I am one of those.

Griffin radiator
Meziere HD EWP (red LED wired in to warn when WP is not spinning)
160* thermostat
SLP manual fan switch

Can sit in grid at autocross on a 80+ degree day and drop coolant temps 10* in 10min with KOEO.

BALLSS

well I have not had a mechanical WP last anywhere near 90k mi and after 17 years of DD, multi state car cruises the EWP is still going. Will it fail at some point, sure. Just like any other WP failure I will notice my temp gauge rising and pull over. Fortunately a EWP replacement will only take minutes on the side of the road with a EWP (if you have a spare).

SS RRR

iTrader: (2)

Never thought of this, but it is truth beyond words. My factory stock mechanical went bad at 4 years/ ~50K miles. Can't imagine how long Chinese rebuilds last...

Catmaigne

iTrader: (6)

The china pumps are total garbage. One of the hose barbs was super loose and poorly siliconed into the water pump housing on a friends car. Just so happened to pop off as I was driving it.