Third / Center Radiator Install
#17
Burning Brakes
#18
Rennlist Member
Thread Starter
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);
#19
Would it be worth getting a GT3 front bumper so it can exit from the top?
#20
Burning Brakes
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.
#21
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Thread Starter
#22
Rennlist Member
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?
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?
#23
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);
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?
#24
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?
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?
#25
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.
#26
On the 997, there were pre-determined cut-outs on the lower portion of the bumper cover for adding ventilation with the third radiator. You just took a Stanley knife and followed the imprints for the rectangular cut-outs. Not sure if the 991 has these already in place from the factory.
#27
Rennlist Member
Thread Starter
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?
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?
#28
On the 997, there were pre-determined cut-outs on the lower portion of the bumper cover for adding ventilation with the third radiator. You just took a Stanley knife and followed the imprints for the rectangular cut-outs. Not sure if the 991 has these already in place from the factory.
#29
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Thread Starter
#30
Rennlist Member
Thread Starter
I do not think so. From the factory, those cars headed towards a warm climate that have a center radiator do not otherwise differentiate from one that does not.