I'm hoping that the collective brains trust here can assist with a problem of leaking power steering pumps.
A friend has imported an RSi Runx rally car from South Africa which has a modified 4age 20 valve motor in it. The previous owner sent over 2 spare power steering pumps cause they would continually blow seals and they could not work out a solution to the problem.
Is this a problem with Corollas that have the 2ZZ motor (which would also be revving just as high?) If not, then maybe I'll try to get one and see if that will fit on the car.
I'm assuming (just a guess at the moment), that the high revs makes the pump run at too high a pressure and that is what is causing the seals to blow. 10 kms yesterday at an autocross track with revs between 5000 and 7500 was enough to make a pump fail.
Another possible solution might be to get an underdrive pulley machined up to help reduce the pressure (or are they readily available?), or does anyone know if the pressure relief valves in the pumps be modified?
There is a rally in 2 weeks time which we hope to enter the car in, but it will be a short event if it spits the seals from another pump as quickly as it did at the autocross track.
Cheers,
Rob.