Page 1 of 1
Oil Pump question! EJ22 vs. EJ22T
Posted: Tue Jul 28, 2009 6:49 pm
by hotdogpimp
Is there a difference in oil pumps for the ej22 NA and the ej22t? Can I upgrade to a newer model of oil pump or are they all the same. For instance, does a 02 wrx oil pump work with the ej22t block?
I broke the pump near the top left mounting tab. I JB welded it in place while im looking for replacement.
Posted: Tue Jul 28, 2009 7:23 pm
by PhyrraM
All oil pumps will work with all blocks.
The EJ22T has the relief valve shimmed from the factory for increased pressure when cold or @ high RPM.
Posted: Tue Jul 28, 2009 7:59 pm
by SLODRIVE
I believe the turbo/WRX oil pumps also have wider gears, with the gear width corresponding to the number cast into the housing. Wider gears mean higher volume.
Posted: Thu Jul 30, 2009 2:36 pm
by Matt Monson
The Ej22e NA pump is a 9mm pump.
The Ej22T turbo pump is a 10mm pump. While it is shimmed a little more aggressively than the current WRX 10mm pump, getting a standard USDM WRX pump would be fine.
You could also get an 11mm STi pump if you wanted. As was mentioned they all bolt up.
If you want just a standard Ej22t pump I've got one that is a good used pump. PM me for price and details...