ok is there a difference involving fitting between the oil cooler or radiator..thanx i also noticed in my cuzzins turbo the he only has a filler neck for the radiator up above the thermostat. could i also use that as a way to fill mine if i get a radiator that doesnt have a filler directly on it???

 

This is difficult to understand, speaking of american version cars, the s4 and s5 verts vary slightly. Both are n/a, fittment of oil cooler and radiator should be similar.



I don't think you can run the turbo water pump housing on an n/a engine, the bolt patterns don't match up, someone can clear this up as I'm not 100 % positive. There is, however, a difference between s4 and s5 water pump housings and pumps, again, the bolt patterns vary.

 

He's just wondering about the necks and drains and mounts on the radiator and oil cooler.

 

haha thanx venom..that is what i meant lol

 

no prob lol

 

ok, s5 has the wierd neck on the radiator with the radiator cap.



there are a bunch of different s4 setups.



early: no cap on the radiator, cap is on the thermostat neck, overflow is by the leading coil.



middle: still no cap on the radiator, over flow moved to in front of radiator.



late: pressure cap on the radiator, fill cap on the thermostat neck.



there is also a now rare bulliten setup where the pressure cap is on the over flow, the thermostat neck gets a filler cap and the water level sensor has the over flow tube in it.



it is possible to mix and match, so you can end up with no radiator caps, or 3 of them etc



the only difference between the water pumps is that the turbo has an extra water line for the turbo.

 

wow i think i have the rare one with the pressure cap on the overflow. doesnt matter anymore since mine is bent and dead

no rareness for me anymore. better start collecting pokemon cards.