Engine oil filter used upstream of electric oil pump

[ReillyRacing]

Hello everyone,

I am developing a manual transmission cooler kit for a specific application. The transmission does not have any internal mechanical pump for an external cooler, so an external electric pump will be used.

I would like to filter the fluid BEFORE it goes through the pump, both for the pump's sake and the transmissions. For ease of serviceability, i would like to use a [high quality] spin-on oil filter (probably the smallest one I can find, such as from a motorcycle). I do not want to use the inline-style filters as i am pretty sure you have to remove oil lines and completely uninstall it to take it apart & clean it.

I am researching what the downsides / risks are associated with PULLING oil through a filter rather than PUSHING it through.

Some considerations:

- The manual transmission fluid used is a 90 weight gear oil, which, when up to temperature, is essentially the same viscosity as 30 weight motor oil.
- The electric pump with be on a temperature switch, so it will not turn on until the oil is at / above normal operating temp.
- The filter and pump will both sit below the fill line of the gearbox, so they will always be full of oil when the pump turns on
- The electric pump pushes a low volume of fluid (compared to an engine oil pump), approximately 1.0gpm

So I'm looking for:
-Specific data on what happens when you PULL oil through a filter instead of PUSH it.
-Any other suggestions for an inline filter that is easily serviced without taking the whole thing apart.

 

[ARCOgraphite]

deleted

 

[tcp71]

How about a metal can, 3/8" nipple magnefine transmission filter. Should do fine regardless of pull/push configuration.

https://magnefinefilters.com/

 

[Ride_Red]

Most pumps are rated to deliver pressure.
You will need to make sure whatever pump you purchase is rated for suction and self-prime.

 

[CT8]

A PH8a sized filter base kit would be a good size and the simplest design would be a Differential cooler kit.

 

[Mightymouse]

Interesting,
Probably best to go with a hydraulic filter that has high pore density.

 

[ZeeOSix]

Originally Posted by Ride_Red
Most pumps are rated to deliver pressure.
You will need to make sure whatever pump you purchase is rated for suction and self-prime.


I'd suggest setting up a simple bench test to see how the pump performs while sucking gear oil at temp.

 

[ReillyRacing]

Good idea.

The pump I'm considering using is designed to be an electric turbo oil scavenge pump, so I think I'm on the right path