So, I think I've decided after putting the 20's on that I'm going to up the power a bit, and get an E-Fan (The Flexalite one from R.E.M., NorCal heat gets bad!) But I've heard mixed reviews about the Cobra R waterpump although it is recommended if you switch from the stock fan. Any comments on this? What exactley is the verdict? Does it hurt you, or help you? Any comments from owners or prospective buyers welcome!

 

there was an article in MM&FF calle parasitic power play
they installed a e-fan and cobra R water pump they claimed the impelller desing was more eficent and moved more water
so it could only help
see if you can find it at their site
hope i helped!

 

I've seen several dyno's of the cobra R pump, and all have shown a loss in power. I'm using the stock pump with an e-fan.

 

If they are more efficient and pump more water, wouldn't you want to slow it down. That way you have even less drag and still pump that same amount of water as the standard pump now. Could just get an electric.

 

do they make one for the mod motors? if so would it fit because of the S/C belt?

 

Yes, Meziere makes an e-pump. I have it. Not cheap though.

 

How's the Meziere? Any gains? Better or worse than the Cobra R? I know it's not cheap...just wondering though..

 

Mine arrived today. Nice billet pulley and CNC'd impeller. Bolts right in the stock location. No need for a different belt because of the idler pulley (which has a huge bearing).

I've heard that the Lightning Dyno's at 11 HP and 22-24 Lb's of torque from this water pump. It also flow 55 GPM. I have no idea what the stock flows but about 1 gallon per second is alot of flow.

Every bit helps.

It'll take me until next weekend until I can start on it. But I'll post some pics then.

 

I'm sure there are some gains in it but I have never done or seen back to back dynos so I dunno. 11/24 sounds a bit high to me though...

 

Not trying to sound like a smart a$$. (Just the facts)

I designed all the "mod motor" OEM pumps. And as long as your not towing anything heavy the cobra pump will work just fine in a 99+ Lightning. You'll get about 3-4 hp at the crank from this swap.

Just ignore any "dyno tests" that companies have done reguarding this swap. There are way to many variables when using a chassie dyno. I've personally conducted the bench tests on just the pumps and these are the facts.

BTW: The electric pump will indeed buy you additional hp. But keep in mind that it is not designed for every driving situation as is the original pump.

As for me on my 2002, I have put in an e-fan and am keeping the stock pump.

Later, WOT

 

For what it's worth RPMoutlet claims 17.1 HP increase over the stock pump, but they claim alot of stuff. I believe the 11 HP increase though.

wydopnthrtl,
I realize that you know alot about these water pumps. But... This Meziere water pump (not all, just this one) is designed specifically for everyday driving. Meziere claims that the pump will last longer with everyday driving vs. strip only use.

 

air1kdf,

17 hp is bogus. The 8 bladed version only maxed out at 14-15hp. And the 7 blade versions don't even consume 12 at worst case.


I've spent years engineering on/in the cooling sytem of modular motors and each vehicle they operate in. And I'm telling you that they DO NOT take into account every driving situation, flow velocities, pressures, vectors (for every square mm of the block, heads, hoses, heater core, rad, ect...) load cycles, & hundrededs of thousands of thermocycles. It would be completely cost prohibitive to do so in the aftermarket realm.

What the've done is what nearly all aftermarket high performance add-ons do. They make an attempt to "cover all bases". They did this by flowing enough to cover the *typical* applications they believe their product will see. What this translates into is less effecient cooling 95% of the time, added load to the electrical system which is was not designed for, and now the FEAD loads and vectors are changed which affect the life of all the other dynamic (spinning) components.

Don't get me wrong, I'm not bashing their product at all. Time will tell how good their product is and any (if any) ill effects it has. Who knows? Maybe their product can operate for 10years and 150k miles just fine?

You just can't believe that because someone says something, that it's always true. Ever hear of "marketing"?


BTW: Anyone wanna buy a bridge? Cheap!

WOT

 

Also, if the electric pump is running while you are making you pass (as I am sure it will be), the power to turn it has just been shifted from direct input from the crank to indirect from the alternator. End result is probably no gain. THe pump does not turn itself and the electricity does not come out of the air. The aalternator will just pull more power from the motor. The only gain will be that you will likely be spinning the pump slower at high rpm, thus some modest power reduction.

The main advantage to electric pumps is that you can run them in the pits to get a very quick cool down between runs.

The above also applies to electric fans. I do not run my fans during the pass down track, only while doing burn-out. I turn fans off as I pull into staging lights and do not turn them back on until I clear finish line. They tow are primarily a way to cool the motor faster between rounds. Changed to the Mustang pump to gain room and cleaner appearance, not HP. Actual Cobra R pump did not fit, it is too short. The pump to use is the Mustang GT or Cobra which does have the anti-cavitation plate on back of the impeller.