garfunkle

Can you add some addition information about bleeding and refilling the coolant?

Valvefloat991

Wonder if that has any aerodynamic effect. Air entering the nose and exiting on the bottom would tend to increase lift on the nose.

awrryan

You're obviously going to lose coolant during this process, I just filled it up with coolant, drove it, and refilled when the engine cooled. Not sure that's the exact correct method. There may be other diys on this issue somewhere. I tried to minimize coolant loss by not removing the coolant cap from under the hood (think of allowing liquid to accumulate in a straw and blocking the opening on top with your finger: The liquid won't fall out of the straw);

4 Point 0

I was thinking the same thing. I know the caymans when they do it exit from the bottom.

Would it be worth getting a GT3 front bumper so it can exit from the top?

Valvefloat991

Seems like the GT3 design would be aerodynamically superior. But without knowing the precise differences, it's hard to know if the change is worth it.t.

awrryan

PCA1983

For me, the question of when to do it is foremost. I added the X51 PowerKit and from what I read, center radiator is not needed. I live in FL in Winter and in IL in Summer, and do not see any need for center radiator yet.
But when I go for a tune, I'm aware some go larger intercoolers, some go IPD larger plenums, and some go for the 3rd radiator - or some combo of these.
My dilemma is - What/which should be done when adding a tune to a GTS or S with X51 PowerKit?

garfunkle

I ma ignorant to this process.... so I'm asking to learn.... but don't you have to purge it to get the air out or is that not a thing?

spdracerut

Unless you are doing track days with extended time at WOT, it's unlikely you'll need the center radiator. Easiest thing to do is datalog your oil temperatures. I'd consider the radiator if your oil temps start exceeding 250F.

spdracerut

On all of the cars I've worked on, there's typically a bleed valve at a high location in the system. But even after doing a bleed procedure, there's still always air in the system. I've found it always takes some driving with high rpms to get the water pump really going and push out the air bubbles. Your coolant level will drop in the reservoir bottle, so keep an eye on it and keep on topping it off until it stops dropping after hard driving.

hagfish2

awrryan

Tampa991

This was my question regarding this install...does the radiator kit come with a new bumper insert or do you cut out where the shroud joins the bumper cover?

awrryan

awrryan