I can answer one of these, having just installed a Meziere 55 gpm pump. Whether i'm sitting at idle, driving in the city, or tooling down the interstate, the indicated water temperatures stay in the 170's. I haven't been to the track yet with this ewp, but I expect that even if temps briefly spike into the 180's, they'll be back down to low 170's by the time I reach the staging lanes. YMMV.

 

Thanks, my only real concern now is it's longevity. While I don't go large distances, my fear is not having water circulation....more than likely one will going on the car anyways.

 

If you're concerned about it, you could always carry a spare with you on long trips. Once you've done the conversion, it's a pretty simple job to swap one electric pump out for another.

EDIT: Wait, are we talking LT1 or L98? I'm not sure if the L98 electric water pump reuses the factory housing like the LT1 does or not. So, the simple job comment may only apply to LT1 water pumps. After the initial conversion.

 

Hi,

Got a question or 2 regarding the replacement of the std WP with the electric unit.

0000 What does the new serp belt path look like ?

0000 Is the electric WP a good idea for a daily all around driver ?

Thanks,

Don

 

Hi Don.

The new serp belt path looks remarkably like the old path. In fact, it's identical. That's because the stock water pumps aren't driven by the belt, they're driven off the camshaft. Therefore, replacing them by an electric pump has no effect on the belt path.

As to whether they're good for a daily driver, I'd say it depends. One advantage with an electric pump is that the water flow rate is independent of engine RPM. If your daily drive involves lots of sitting still in traffic, especially during hot summer months, then an electric pump can provide significantly better cooling. On the other hand, at highway speeds, the flow rate with an electric pump might be less than with the stock pump, depending on which electric pump you get. When I had a Meziere 35 GPM pump, my engine ran a little warmer on the highway than it did stock; with the beefier 55 GPM pump, that's no longer true. YMMV.

 

Thank you for the quick reply. I should have mentioned that I have the L98. My error. Thanks for the info.

Regards,

Don

 

what is the part number for the 55gpm meziere pump? only ones i can find on jegs for my 92 are the 35-40. so i had bought the WP118. Is that a good and suffiecent pump?

 

This is the one I bought. Has the heavy duty motor.

http://www.jegs.com/i/Meziere/680/WP118HD/10002/-1

 

i bought the non HD version of that one. Both discriptions claim to be only 35-40 GPM.

 

How many people think:
GM engineers are morons because designed engine temp. is too high. It is too high because i feel it should be lower. ?

 

However, the manufacturer ....has the 118HD listed as 55gpm

http://www.meziere.com/searchresult.aspx

Meziere Product Part Search



Electric water pump, fits GM LT-1, 55GPM, heavy duty motor, black

 

GM engineers aren't morons at all. They properly executed a design project on the LT1 engine, in that it met the design specifications of a 300 HP engine that achieved ~28 gpm on the highway and met current vehicle emission standards. That explains the standard 2.59 gear ratio in the A4 and the running engine temperatures above 200*.

However, they didn't design an engine to run the quarter mile in bracket racing. Those of us who choose to bracket race in our Corvettes have made two important observations:

1. The best quarter mile times are achieved by running the engine fairly cool, around 170*. This is explained by the reverse-flow cooling and the way the computer controls the spark advance. At WOT, the computer advances the timing until knock is detected, then backs off a smidgen. This maximizes the available horsepower, and since cooler cylinder heads are less prone to predetonation, more advance is possible. More advance = more horsepower. Cooler engine = more HP.

2. A corollary of observation #1 is that in order to achieve consistent quarter mile times, critical to success in bracket racing, it is critical to start each run down the track at a consistent engine temperture.

Using an electric water pump and a low-temperature thermostat allows bracket racers to get the most out of our Corvettes. No, GM engineers aren't morons, but neither are many of us who enjoy drag racing our Corvettes.

 

got it thanks.