Oil Pump Differences

[subytech]

Yes I have serched and couldn't find anything. Does anyone know the physical differences between na and turbo oil pumps? When I did my T-belt and water pump I went to reseal the oil pump and found the housing had cracked in the lower left hand bolt hole, not knowing any better I replaced it with an na pump we had laying around. So I guess my real question is if I change out the na spring and releaf valve from the na pump and replace them with the turbo pump bits does that turn it into a turbo pump?

[Matt Monson]

The NA pump is probably a 9mm pump while the turbo one is definitely a 10mm pump. If you pull the covers and look on the upper edge of the pump it will be cast into the body of the pump.

If your car is stock or mostly stock, it shouldn' matter. If it's modded a fair bit you might consider getting a new WRX pump. It's a 10mm pump as well...

[Arctic Assassian]

You can get the 11mm pump from the 08 sti for the same price... I have them instock at work. I can get em for 135 bucks.

[subytech]

Thanks for the info I just orderd an 06 WRX pump ($95). The na pump has been working fine for the last year but i just orderd stuff to make a front mount and I'm planing on upping the boost so i figure that the pump should be up to snuff.