Power steering delete

[Larryfishes53]

Thanks to discussions in this and other forums, and some learning curves on my own (3 steps forward 2 back, etc.) I am close to installing my motor by this weekend. For this post I wanted to say thanks for the power steering pump delete and much shorter belt advice. Works slick. But after purchasing the suggested belt (AutoZone 650 K6) I had to find a bit longer belt also purchased at AutoZone… 665 K6. My car is an 05 but the engine is an 07 and the AC pump is somewhat different. Not sure if that was the difference on my car but the new belt works.

 

[07 Boss]

Just worried about the belt wrap around that H2O pump.

 

[Juice]

Just worried about the belt wrap around that H2O pump.

An idler pully to the left of the WP with a longer belt would solve that.

 

[Dino Dino Bambino]

An idler pulley to the left of the WP with a longer belt would solve that.

Just worried about the belt wrap around that H2O pump.

Agree. The easiest solution is to reinstall a grooved idler pulley and route a longer belt (Gates K060870) around it.

 

[07 Boss]

Or you can go Electric H2O pump and then belt wrap is not an issue.

 

[Larryfishes53]

Now y’all got me thinking. I’ll try this and if it doesn’t workl I’ll go with the other pulley/belt configuration. Researching electric water pump. Thanks!

 

[07 Boss]

Now y’all got me thinking. I’ll try this and if it doesn’t workl I’ll go with the other pulley/belt configuration. Researching electric water pump. Thanks!

Yeah, an electric pump uses just a dummy pully so it doesn't matter if it actually spins or not. There are advantages to an electric pump. One, no parasitic loss from pumping the coolant around freeing up a few extra ponies. And when you're idling in traffic with no air flowing is when you need the rest of your cooling system to work more efficiently. At idle your mechanical H2O pump is pumping the least volume of water when you need the most. An electric pump will pump the max volume at all times regardless of engine speed. I have actually seen my temp gauge go down while sitting in the staging lanes. If you do go to the track you can also turn the pump and fan on while the engine is off and minimize cool down times from over an hour to literally about 15 minutes. You do need to bring an external battery or power source but you can do back to back runs without any heat soak. Anyways I don't think there are any downsides to running an electric pump, only some advantages. To me, it's a no brainer and have been running electric pumps on most of my race cars builds. Plus if your belt ever breaks you can still get around as long as your battery holds out without overheating. It has saved me in the past and have driven home 12 miles with no belt.

 

[Juice]

Yeah, an electric pump uses just a dummy pully so it doesn't matter if it actually spins or not. There are advantages to an electric pump. One, no parasitic loss from pumping the coolant around freeing up a few extra ponies. And when you're idling in traffic with no air flowing is when you need the rest of your cooling system to work more efficiently. At idle your mechanical H2O pump is pumping the least volume of water when you need the most. An electric pump will pump the max volume at all times regardless of engine speed. I have actually seen my temp gauge go down while sitting in the staging lanes. If you do go to the track you can also turn the pump and fan on while the engine is off and minimize cool down times from over an hour to literally about 15 minutes. You do need to bring an external battery or power source but you can do back to back runs without any heat soak. Anyways I don't think there are any downsides to running an electric pump, only some advantages. To me, it's a no brainer and have been running electric pumps on most of my race cars builds. Plus if your belt ever breaks you can still get around as long as your battery holds out without overheating. It has saved me in the past and have driven home 12 miles with no belt.

Agree 100% on electric WP advantages.
I wont run one. I prefer simplicity and reliability of a mech WP.

 

[Autokyrios]

I want to put in an electric water pump (Meziere) but I can't find how it flows compared to the Edlebrock pump I currently have. Electric has advantages over mechanical at idle, but what about when moving? If at higher RPM the mechanical pump is outstripping the electrical pump, that's an issue. Unfortunately I haven't been able to find flow ratings for the stock or Edlebrock mechanical pumps to compare with what Meziere is stating.

 

[07 Boss]

I want to put in an electric water pump (Meziere) but I can't find how it flows compared to the Edlebrock pump I currently have. Electric has advantages over mechanical at idle, but what about when moving? If at higher RPM the mechanical pump is outstripping the electrical pump, that's an issue. Unfortunately I haven't been able to find flow ratings for the stock or Edlebrock mechanical pumps to compare with what Meziere is stating.

I don't know where to find that info, I only have anecdotal info for you. Even at highway speeds though your not really into high rpm's and I'm pretty sure the electric still outflows the mechanical until you really get that thing cranking. And at speed you don't need as much capacity as the air flow of the radiator greatly improves the efficiency of the overall system. I have been using them for decades and never had an issue with cooling any of my motors. Now there are some failures of the dummy pulley but the pump keeps spinning when that happens. I live in the high Mojave Dessert and run almost 500 rwhp with a whipple. Temperatures reach 120 in the summer and even with my AC on max, in traffic, the temperature gauge never fluctuates. It has never even gotten to halfway on the gauge. So I don't have any flow numbers but I run beat my car like a red headed step child in extreme conditions without any issues.

 

[lwarrior1016]

I routed my belt just like this whenever I did the EPAS rack swap on my 07. It was done in feb of 24. I daily drive it, and have had zero issues with the water pump. A few weeks ago I pulled the engine out to reseal it and do a timing job. Kept the same water pump and belt on it, still have no issues.

 

[Dino Dino Bambino]

I want to put in an electric water pump (Meziere) but I can't find how it flows compared to the Edlebrock pump I currently have. Electric has advantages over mechanical at idle, but what about when moving? If at higher RPM the mechanical pump is outstripping the electrical pump, that's an issue. Unfortunately I haven't been able to find flow ratings for the stock or Edelbrock mechanical pumps to compare with what Meziere is stating.

The Meziere EWP flows a constant 55 gallons per minute whereas the coolant flow from a mechanical water pump increases with rpm. A mechanical pump only begins to outflow the EWP above 3250rpm with standard size pulleys and above 4400rpm with a 26% underdrive.
You could get the best of both worlds (better low rpm cooling AND reduced parasitic HP losses) by combining a Meziere EWP with a Steeda underdrive crank pulley. The latter will reduce parasitic losses from other belt-driven accessories such as the alternator, PS pump, and AC compressor.
An EWP won't cause any high rpm cooling problems as long as the engine isn't at sustained high rpm for long periods e.g. endurance racing. If you spend a lot of time in stop-go traffic, you'll definitely feel the benefits of an EWP. Keep in mind that with an expected lifespan of 3000 hours, your average speed in mixed driving would have to be at least 35mph if it's to outlast the 100+k miles of a mechanical pump.
Here's some additional info. you might find useful:

Engine Parasitic Drag

 

[Autokyrios]

That's kind of what I'm thinking...the electric pump doesn't sound like it will push more (or any-more) than a mechanical pump when it's needed (not going easy). I'm more worried about keeping things cool when I'm on long highway runs or at the track than sitting at a drivethrough, and I don't drag race like I used to so don't care about pit cooling.

As for UDPs, ran those for a while, ended up ditching them. Gains were negligible, and they under-drive the alternator which causes electrical issues. More an issue when I ran a stock-capacity alternator than the 200A I run now, but still screwed with the voltages. Had to up my idle RPM and low speed to boost the alternator speed to compensate and keep a steady voltage, and eventually I ditched the setup.