meziereHD water pump question
Thread Starter
Racer
Joined: May 2012
Posts: 363
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From: Peabody MA
meziereHD water pump question
My LT1's water pump is leaking so I think it may be time to replace it with an electric one, which is something I've been wanting to do for awhile anyways. From what I've read on here they are overall better than the OEM pump.
My question is, does the pump come with all of the necessary things to complete the project? Freeze plug, wires, relays, etc? Anything else I need to buy?
My car is a 1992 so it has the one-year water pump I believe. It also has 109,000 miles, but the water pump and opti were replaced at 85,000 miles. No signs of the opti failing yet, but I am wondering why the water pump hasn't even made it 25,000 miles. Maybe it was a cheap one? Idk.
This is the one: http://www.jegs.com/i/Meziere/680/WP...15#moreDetails
My question is, does the pump come with all of the necessary things to complete the project? Freeze plug, wires, relays, etc? Anything else I need to buy?
My car is a 1992 so it has the one-year water pump I believe. It also has 109,000 miles, but the water pump and opti were replaced at 85,000 miles. No signs of the opti failing yet, but I am wondering why the water pump hasn't even made it 25,000 miles. Maybe it was a cheap one? Idk.
This is the one: http://www.jegs.com/i/Meziere/680/WP...15#moreDetails
Race Director
Joined: Jan 2002
Posts: 12,264
Likes: 88
From: O'Fallon Missouri
No, you'll ned to buy a quality electrical relay, wire, and a freeze plug for the timing cover. The TC freeze plug will only be needed if you are going to remove the waterpump drive, which I would recommend.
Race Director
Joined: Sep 2001
Posts: 14,685
Likes: 753
From: NEwhere Ohio
My LT1's water pump is leaking so I think it may be time to replace it with an electric one, which is something I've been wanting to do for awhile anyways. From what I've read on here they are overall better than the OEM pump.
This is the one: http://www.jegs.com/i/Meziere/680/WP...15#moreDetails
This is the one: http://www.jegs.com/i/Meziere/680/WP...15#moreDetails
The OEM pump flows more from about 3500 RPM up, than the Meizere water pump.
The reason why it works for most people is because most people here dont road race the car. They drag race or tool around on highways. Its ok for short bursts.
The way to make the Meizere HD pump cool better than the stock system is to replace the stock radiator with an (expensive and heavier) Dewitts, etc.. radiator. Then the more efficient heat transfer seems to mitigate the reduced high RPM cooling of the electric water pump. In that case, there are people here road racing with that combo and it seems to work.
Elsewise, expect higher temps then the stock..
Also, if you do this mod, Ive heard its best to hack off the weatherpack connector and direct solder the wires. Ive heard horror stories of someone getting a pump with a loose weatherpack connector.
You probably want some kind of alarm rigged into the cabin too to let you know if the water pump (its wiring, or relay) have failed.
good luck!
Drifting
Joined: Aug 2009
Posts: 1,978
Likes: 244
I have the MezHD pump on my 1994.
Prior to the electric I used a 160 thermostat and typically saw consistent temps up into the 220s.
With the electric I ran consistently under 200.
Now electric + 3 row aluminum radiator it runs in the 170s. Regardless of indefinite idling w/ac on, street driving or heavy wot. Stays in the 170s.
To each his own, but it's worked well for me. I would definetly disagree with the above statement indicating it will run higher temps than stock. Is that from experience or speculation? Its not my experience. The Mez pump comes with a freeze plug for the water pump drive.
Go with the HD pump if you decide to get it.
Prior to the electric I used a 160 thermostat and typically saw consistent temps up into the 220s.
With the electric I ran consistently under 200.
Now electric + 3 row aluminum radiator it runs in the 170s. Regardless of indefinite idling w/ac on, street driving or heavy wot. Stays in the 170s.
To each his own, but it's worked well for me. I would definetly disagree with the above statement indicating it will run higher temps than stock. Is that from experience or speculation? Its not my experience. The Mez pump comes with a freeze plug for the water pump drive.
Go with the HD pump if you decide to get it.
Last edited by jmgtp; Sep 4, 2012 at 12:30 PM.
Thread Starter
Racer
Joined: May 2012
Posts: 363
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From: Peabody MA
Thanks for the advice guys, turns out my water pump somehow became loose, I tightened all of the bolts that hold it on a full turn and it stopped the leak. I still plan on getting a Meziere HD in the future though, I don't road race so I'm sure it will be fine for me.
Race Director
Joined: Sep 2001
Posts: 14,685
Likes: 753
From: NEwhere Ohio
I have the MezHD pump on my 1994.
Prior to the electric I used a 160 thermostat and typically saw consistent temps up into the 220s.
With the electric I ran consistently under 200.
Now electric + 3 row aluminum radiator it runs in the 170s. Regardless of indefinite idling w/ac on, street driving or heavy wot. Stays in the 170s.
To each his own, but it's worked well for me. I would definetly disagree with the above statement indicating it will run higher temps than stock. Is that from experience or speculation? Its not my experience. The Mez pump comes with a freeze plug for the water pump drive.
Go with the HD pump if you decide to get it.
Prior to the electric I used a 160 thermostat and typically saw consistent temps up into the 220s.
With the electric I ran consistently under 200.
Now electric + 3 row aluminum radiator it runs in the 170s. Regardless of indefinite idling w/ac on, street driving or heavy wot. Stays in the 170s.
To each his own, but it's worked well for me. I would definetly disagree with the above statement indicating it will run higher temps than stock. Is that from experience or speculation? Its not my experience. The Mez pump comes with a freeze plug for the water pump drive.
Go with the HD pump if you decide to get it.
I definitely agree, go hd pump if you go electric.
You have an upgraded radiator, so you are gonna have good results.
Cruising
Joined: Jul 2011
Posts: 13
Likes: 0
If you want to use a relay in the wiring system (I suggest you do) that will need to be purchase separately. Meziere’s has a relay kit if you want to purchase from them. The pump should come with everything you need to install it.
A few things to think about before installing a WP118 water pump.
Some refurbished or aftermarket stock pump housings will come with a larger then stock hole where the freeze plug is installed. So you may need to source a larger size freeze plug from a local parts store if this is the case.
The WP118 will not come with the factory inspection cover gasket. If you are careful when you disassemble your factory pump you should be able to reuse the gasket, if you need a new gasket you will need to get one from your local dealer. I would check ahead of time to make sure they have one in stock. Part # 10128329
Do not use too much silicon sealant when installing to pump. If the sealant gets on or under the impellor during the install it will glue the impellor to the pump. The electric motor cannot overcome this and it will burn up your electric motor.
Remember all Meziere water pumps come with a 2 year warranty.
A few things to think about before installing a WP118 water pump.
Some refurbished or aftermarket stock pump housings will come with a larger then stock hole where the freeze plug is installed. So you may need to source a larger size freeze plug from a local parts store if this is the case.
The WP118 will not come with the factory inspection cover gasket. If you are careful when you disassemble your factory pump you should be able to reuse the gasket, if you need a new gasket you will need to get one from your local dealer. I would check ahead of time to make sure they have one in stock. Part # 10128329
Do not use too much silicon sealant when installing to pump. If the sealant gets on or under the impellor during the install it will glue the impellor to the pump. The electric motor cannot overcome this and it will burn up your electric motor.
Remember all Meziere water pumps come with a 2 year warranty.
Race Director
Joined: Apr 2000
Posts: 15,344
Likes: 4,009
From: Texas
The factory water pump housing / inspection cover uses an o-ring. There is Zero need to use any RTV or other types of sealer.
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Instructor
Joined: Mar 2012
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From: NH
Anyone know how to rig up an alarm for these? I have one installed by a PO and I am not really happy with the wiring job. Going to get the wire/relay kit from Meziere and redo the wiring and it would be nice to throw an alarm in while I am at it
Race Director
Joined: Jan 2002
Posts: 12,264
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From: O'Fallon Missouri