Water pump flow rate

[aldive]

Anyone know the flow rate for the stock SOHC water pump?

Thanks ....

 

[JDraper]

I don't have a # for that, but my Meziere water pump for my 4.6 DOHC flows at 55 gpm, which is more than sufficient.

On edit, just for more info, bot Meziere's electric water pump for big block street applications and their standard 5.0 electric water pumps flow 35 gpm

 

[aldive]

Thanks Jeff. I am wondering what the stock mechanical water pump ( on the SOHC 4l ) flows.

 

[aldive]

bump

 

[gijoecam]

Al, the flow rate on the stock engine driven pump will vary with engine RPM, just like the stock fan airflow rate varies.

Now, there *may* be a stock flow rate at a particular RPM, but I have no clue what that might be... let me see if I can dig something up at work tomorrow.

-Joe

 

[aldive]

Al, the flow rate on the stock engine driven pump will vary with engine RPM, just like the stock fan airflow rate varies.

Now, there *may* be a stock flow rate at a particular RPM, but I have no clue what that might be... let me see if I can dig something up at work tomorrow.

-Joe

Thanks, Joe; appreciate it.

 

[gijoecam]

Searched today... no luck. Sorry... I tried. It just appears that there are too many variables that determine flowrate... you can stick the same pump on two different vehicles and they'll move different amounts of water because the pump is only one part of the whole system.

My best guess would be to find one that'll keep a small block cool, and guesstimate it'll move enough water to keep your SOHC cool. Wish I could be more specific.

-Joe

 

[CDW6212R]

I have read about high flowing aftermarket water pumps many times over the years. The numbers I read way back when were much lower than these electric pumps advertsise. The older pumps have cavitation issues, resistance due to that, etc. and high flowing units were well under the 35 number that seems to be common on the electric units. They should work very very well.