Not entirely sure how to add pictures so I've added an album in the photo gallery, could you let me know your thoughts?https://passionford.com/forum/album.php?albumid=2772My My next project is a front mounted 2 pass intercooler, however all though my knoledge of intercoolers is pretty good, my understanding of car tuning pales in comparisson to some of you guys, so i would like to ask a couple of things.1/ Would there be any point in installing a FMIC on a standard tuned series 2 RS?2/ If so what performance increase am i likely to see?3/ by the looks of it, the radiator cooling fan would have to be removed to accomidate the FMIC, is this recommended?Thanks in advance

 

Well done for doing it chap, but it has to be said. What was wrong with the standard one? The OEM copper core radiator is very good. I ran it on my S2 at 350bhp and wouldn't have swapped out for an Alloy rad even if someone had given it to me. If it ain't broke, don't fix it!!

 

Funny you should say that, as it was actually broke lol, had a pin hole leak which was drawing air in and causing the header tank to overflow

 

Cooling systems don't draw air in, they force water out as they run about 1 bar of pressure when up to temperature.

 

When up to temperature yes, but when the thermostat is closed the water in the rad is static, in affect the rad was constantly de airating every time the thermostat opened.

 

Your rad was holed and basicaly leaking then.....

The header tank was only overflowing because of an airlock caused by water leaking out of the cooling system at low temperature.

The terms you used were not clear as you usually notice a puddle under the car rather than air in the cooling system. Air is displaced by the water and can only return back into the system if there is a coolant leak allowing air to return to where there was once water.

Are you sure you don't have an underlying problem like a head gasket failure?