Thanks Major.Hi John,
I assume you mean a pump drive motor. Hydraulic motor typically refers to a device using hydraulic fluid flow to produce a mechanical output.
Contrary to what was told you on the other thread, main (lift) pump motors from fork trucks can be as powerful, or even more so, than traction motors. It depends on the type of lift truck. Just because the pump motor is rated on a low time-on duty cycle doesn't mean it won't run continuously, at a lower power output. And they are often fan cooled.
The pump motor from a forklift may be suitable for an EV conversion. Typically they are unidirectional, so be sure rotation direction is correct for you. Switching rotation requires internal modification. And typically the motor will have an internal splined shaft making a coupling for a car very difficult.
The one I am looking at is on Ebay now, it is rated as continuous and has plenty of cooling from the picture it seems to have a fan and an open cover over the brushes, it still has the pump attached so presumably I could use parts of the pump to fabricate a flange of some sort, maybe weld a plate into it...