Transaxle oil cooler pumps Options

[pcar916]

How many of you are using gear pumps instead of diaphragm types and what filter element (micron) sizes are you using?

[pcar916]

Ok, since I haven't seen an answer to this noisy-pump issue....

Considering how loud even rotary pumps are in a car with most or all of the sound deadening removed, I'd bet the pump is just fine. Every one of the diaphragm pumps I've used (some in fuel applications) is the same way.

I'd run it and listen for anything that changes. If I'm right about that car's usage you aren't running it more than two hours at a time, which is the Tilton time limit they state as the outside (per a Tilton vendor I talked to while deciding on a pump). On that point.

If anyone can point to documentation about that I'd like to actually see it in writing. Preferably tied to operating-temperature limits.

Have you learned anything different?

[moggy]

Ok, since I haven't seen an answer to this noisy-pump issue....

Considering how loud even rotary pumps are in a car with most or all of the sound deadening removed, I'd bet the pump is just fine. Every one of the diaphragm pumps I've used (some in fuel applications) is the same way.

I'd run it and listen for anything that changes. If I'm right about that car's usage you aren't running it more than two hours at a time, which is the Tilton time limit they state as the outside (per a Tilton vendor I talked to while deciding on a pump). On that point.

If anyone can point to documentation about that I'd like to actually see it in writing. Preferably tied to operating-temperature limits.

Have you learned anything different?

This has been a REALLY useful thread guys. Thanks.

I am just about to go down this route of cooler and spray bars on my gearbox after experiencing the same problems mentioned in this post, I.e. difficult shifting once the box starts to get real hot and now the synchro for second is needing replacement. I have the same causes - spirited driving (IMG:style_emoticons/default/happy11.gif) with lots of shifting due to the nature of rallying and the shorter gears (4th is now my 5th), powerful engine, Guard LSD, and to make matters a lot worse.... A skid plate. That last part basically stops any decent air flow cooling the box down and worse... Keeps the heat from the exhaust reflected back up (IMG:style_emoticons/default/blink.gif) cooking the gearbox.

Anyway.... My concern is regarding the choice of pump to go for. The Tilton says it should only be used For intermittent use, I think it was mentioned here, no more than 2 hours constant use. I was wondering if the RB Racing pump has the same limitation? 2 hours constant use is sorta ok but longer would be a lot better with my application. My plan is (was) to wire it up to the fuel pump 12v supply so it comes on with the ignition.

[pcar916]

I was wondering if the RB Racing pump has the same limitation? 2 hours constant use is sorta ok but longer would be a lot better with my application

The RB Racing pump is constant-duty so run it until the cows come home. It's interesting that Mocal now sells the RB Racing pump for about $25 more than RB does directly.