Alan C.

Dan,

You are a patient person to have stayed with the marque after owing a 77.

A few quick answers.

I used the oil temp gauge in the car to judge temperatures.

The water temperature gauge is useless hence the comment 'imagine that'.

The kit I purchased is the Tiptronic kit. Note: I believe Suncoast includes the optional fender liners.

On the weight issue I'll take the additional thermal capacity of a third radiator over the weight savings. I can always put 3 gallons less fuel in the car.

I'm happy with the lower oil temps. The last two air cooled cars I tracked were an RSA and a 993. I installed a second oil cooler on both.

Alan C.

Porsche uses an oil to water cooler for cooling the oil. Therefore, if the volume of water and the cooling surface is increased the capacity to cool the oil will also be increased. If the two were not connected it wouldn't have as much of an impact.

Adam Conrad

How much did it cost you? Anyone DIY?

Doc GTO

Ah, in that case, ok.

808c2s

Check with forum member "Verde". He installed himself the 3rd radiator.

Alan C.

Heres a link to a discussion on installing a third radiator. Check post #10 for links to the bumper removal and radiator install.

http://www.6speedonline.com/forums/9...-welcomed.html

Rob Heath

So after driving a 991 in the Porsche Road Show event yesterday my interest in getting a 997.2 has increased a lot... a car with 24 years of better engineering than what I am driving and will cost a lot less than a new 991 car...

https://www.porscheworldroadshowusa.com/

A friend said that he thought that the 997.2 got a 3rd radiator in 2011 and that earlier 997.2 could upgrade to this option. Searched and found this link about installing a 3rd radiator.

A couple of questions (remember I'm an air cooled guy):

Are we talking about a radiator that has liquid coolant, cooling the oil or a 3rd oil cooler radiator?

Since I would want to do DE in the 997.2 in CO where it gets pretty hot on the summer is it a good idea to either get a 2011 997.2 or just think of planning to install the 3rd radiator for any 2009 + 997.2?

Was 3rd radiator part of the standard 2011 997.2 package?

Thanks!

slicky rick

Alan it seems you have a 997.2 and your saying you put on the tiptronic kit. So are you saying the kit to fit the pre 09 911 will fit the 997.2's. i ask because the 3rd rad designed for the 997.2 is so. MUch more expensive than the kit for the 997.1. Hope you can share.

Gibbo

Hi there

Installed a 3rd radiator in my 997.1 S manual a year ago, noticed similar kind of improvement, peak temps much lower, only a good move for these engines and at sub $200 its well worth it.

USMC_DS1

+1, previously my operating temp would start out at 225F once the engine was warmed up but then it would rise past 250F depending on outside ambient temp and aggressive driving. After the 3rd radiator was installed the engine temp has been starting out at 210F once warmed up and would only clime towards 225-250 with some aggressive driving under that hot TX heat... but not more as it did previously. A worthy MOD to keep these engines running cooler.

Edgy01

Just keep in mind that the third cooler in the center is a cheaper manufacture than the one found in the GT3 cars. Part numbers are different.

USMC_DS1

Yes... but doesn't the C2S have plenty of parts not used on the GT3 and vs-verse like engine, suspension, etc. Should we be using the GT3 radiator instead? does it fit a C2S? I figure using the Porsche supplied optioned kit should be sufficient and it seems to do the job... but I'm always open to insight.

Edgy01

Personally, I would probably go with the GT3 cooler but I suspect it is not a simple form fit function replacement (knowing Porsche as I do). There may be adaptation needed to make it work.

Suns_PSD

There are several products out there that I have tested that you can just add to your coolant and it can dramatically lower temps.

The one I like has the word 'Radiator' in the name but I forget the actual name. It's a 2 word name and both start w/ the letter 'R'.

Anyways, I have a rather expensive aftermarket radiator sitting in my garage that I had intended to use but now w/ the addition of 'Radiator RXXXXX' I don't feel it's necessary. The car also warms up and cools down way faster.

I'd recommend products like this for those that just do occasional track days. Only about $20 for a treatment as well so the cost savings is substantial.

cello

Resurrecting an old thread. 997.2 S.

Can someone please explain one thing to me re the install - It appears the 3rd rad sits flush to the aluminum plate under the bumper support.

How does one get airflow thru and past the rad and where does it vent to? Since the installs in these posts do not show install of a gt3 front bumper (with the top vent), I assume the air vents to the bottom. However, the undercarriage panels are flush (ie without a gap or area for venting from the front bumper as the original design is solid - no air can pass thru - to direct airflow into the side intakes where the oem rads sit).

I searched and read the posts (and other threads in same) but there is no mention of the above...

Can someone that has actually installed the kit advise, please?

Also, can someone please provide a link to the kit or part numbers that have worked?

Thanks!!