I noticed my water pump has residue on the weep hole. I have cleaned it a couple times to notice it more. Never seen a puddle or drip, but the mileage on this pump is unknown. I want to upgrade to an eletric pump anyway. I have done some research and want to know what would be the best electric pump for my application. Car has AC and heat/ driven 45 minutes everyday/ sees temps from 15deg up to 100deg/ already ordered 160deg tstat.

CSR pump: Has to be modified with file/ $183 / 30-37GPM

Meziere 118: Trim the fan shroud/ $216 / 43GPM

Meziere 118HD: Trim the fan shroud/ $270/ 55GPM

What should I pick?

Thanks,
James

 

A few of my buddies have the Meziere 118 and havn't had any problems with them yet. I've seen them on a switch or set up to run when the key is on. I'm planning on running one when i buld my engine

 

I run a CSR type on my car. It is actually the summit brand and it is made by CSR. I drive it very often in the summer. It is setup to run when the engine is on. I have had no problems at all with it. The car runs cooler and stays that way. It is the kit below which is a great deal imo. Comes with everything you need to set it up. And you don't have to run that stupid wp shaft, which means you car run a double roller timing set. Good luck.

http://www.summitracing.com/parts/CMB-12-0013/

 

MEZ HD and weatherpack relay

I've been running a MEZ HD on my dd since March 2006.

I chose the HD since I wanted the highest flow rated pump, if you decide to go EWP ensure you wire it for easy maintenance and watch your guages.





Last week I had my first cooling problem ( Mez did not fail) I used the Painless waterpump wiring harness and relay; however, painless is not a weather pack and the relay finally failed in a hard rain during a thunderstorm.

Once I saw that the car was heating up I pulled over did some quick trouble shooting, jumpered power terminal on the alternator to the fuse on the mez, drove to VATO zone and bought a replacement relay.

Now I have a weather pack wiring harness on order. (my current relay setup looks like the one offered in the Summit kit listed above)


Good luck

Mike

 

onefastmx5:
I've used the CSI (now CSR) pump about 9 years. Also the 160° thermostat and the fan is set to turn on at 180°. I've ordered a Meziere 118HD (55gpm) since I found that the coolant at the rear cylinders (between #7 & 8) runs ~25° hotter than at the front (between #1 & 2). I think the 40% higher flow should reduce the temp difference. Since I had an intermittent relay problem recently, I plan to use 2 relays in parallel.

 

If you go with a standard (vs. a weatherproof) relay, make it highly weather resistant by doing the following:
Socket - silicone the end where the wires go into back of the socket. Put dielectric grease in the terminals where the relay plugs into the socket.
Assembly - After plugging the relay into the socket, wrap electrical tape around the juncture where the socket meets the relay. I use Scotch Super 88, and 33+ is also excellent. It is temp rated -18C to 105C and has excellent adhesion. The up side is that if the relay fails, it can be found at any auto parts store and replaced for ~5-$8.
I have the Meziere 118, no problems so far.

 

I have the HD version of the Meziere pump and have had zero issues to date after several years. Before this I had the CSI pump (now CSR) and had an issue and decided to switch away from them due to their customer service (actually the lack of customer service). I run a 160 thermostat and I rarely see temps above 170, in the summer in Fl with the AC on.....

 

118 HD here. About to fill coolant up for first time soon.

 

Put an CSI water pump on my car about 5 years ago. I've driven the car probably 10k miles since then. I've had no problems with it. Car rarely sees temps above 170. Only in the Florida summer does it hit 180.

With the water pump off I suggest putting an RTV seal around your opti as well...

 

Been running my CSR pump for 6 years now, over 70k miles. Works great, dont know about the grinding you speak of Keeps things pretty cool in the southwest.

-Dustin-

 

This may sound stupid but I am not even running the realy kit. With my kit you get a small harness that plugs into the pump itself. I am just using that harness to run the pump. I have it grounded on the driver side frame rail and wired into the ignition. I have had no problems with this. I may order a weatherpack relay harness and redo the wiring the proper way.

 

I really recommend using a relay with a motor that draws as much as these do. While it'll work the way the way described above, you'll get less than full voltage to the pump much of the time and the current draw could overheat the stock wiring.

Relays aren't expensive and they are easy to wire...you don't need a Painless wiring kit to do it.

 

NightShadeZ28:
Depending on where in the ignition circuit that you have the waterpump feed wired in, if there's a pump problem you could take out the ignition fuse ... engine off, no power steering, one shot at good braking. Use the ignition circuit to provide control power for a relay to the waterpump. The parts stores usually have 30amp rated relays for $5-$6. (run the power wiring from the red junction box by the battery and put a fuse on the supply too)

 

I only have a switch. Working good for years. Just throwing that out there.

-Dustin-

 

I have the Meziere 118. Its been in my car for years with Zero problems and it is a daily driven car from approx. April-November.

FYI - make sure you seal off the weep-hole well before final installation of the EWP (use JB-Weld or something in addition to a freeze plug).