I put the Centre PWR on with the GT3 front bumper. So whilst I never thought it did much either, reading about others that track and got transmission failure faults and over heating faults, I avoided all that.

I have destroyed 3 sets of front brake rotors due to heat.
I killed the E-Diff.
I have disintegrated brand new OEM pads in 3 x 20min sessions. More cooling isn’t going to hurt my car.

I need to run water/meth as well. Intercoolers are heat soaking badly.

I’ve just ordered a fresh set of Cup2-R.
I now run Endless N35S pads full time. They are fine on the street. 🤣

The OS Giken mechanical diff really calmed the car down.
When you are on the edge, it doesn’t just let go. It gives you such pure feedback, you can balance it on the edge, and if you do step over the line, a small correction brings it back. It really is a joy to drive. It has finally gotten to a point where it is just pure. Everything is working together.
Unlike the early days 🤣

 

Well I ordered the L/R PWR radiators. They are saying 8 weeks. (That sux)

So whilst i am waiting, I wonder if this can be fitted to 991.2?



3 times larger

Looks cool

Asking race mechanic

 

I mean, you might as well rig a water spraying system to it. You always pull a rabbit out the hat.

 

Yeah, still deciding the best way forward on the I/C heat soak.

Water/Meth system is looking most likely.

I’ll have a chat to my mechanic, as I’m getting fresh Cup2-R’s tomorrow.

 

It's a tough one. There's just no decent ambient airflow back there. The OEM I/Cs provide the best ambient air flow but are not large. Larger intercoolers have a higher thermal load capacity but reduce ambient airflow.

I was looking into adding fans to the intercoolers because dyno testing was painfully slow waiting for I/Cs to cool, and we have a badass dyno setup that uses wind tunnel blowers and pushes ~55mph air over the car. We later added rear blowers that force ambient air through the I/C setup and ALL the heat soak problems went away. We could do pull after pull after pull....

FRONT


REAR Blowers. Industrial floor blowers, not Home Depot.


So, I designed a shroud that fit between the I/C and lower air duct. It's made to hold a pretty powerful 6.5" Spal puller fan. I was going to wire them up with an adjustable thermal switch. We went the blower route because we put more than our shop 911 on the dyno, so we never used the setup. I've often wondered if, or how beneficial it would be on a road or track going car. I doubt the setup would fit if you're running I/Cs with a modified lower ambient duct, but if you're running the stock lower duct it should. I've never even test fit the setup aside from the shroud fitting on the I/C and duct, but if you're running the lower duct and willing... I can send you the setup to try. Or you can strap some blowers to your roof. I know that works very well

 

RUF style inlets on the rear quarters, or as @4.0 mentioned before, rear window inlets.

Problem with fans is they block flow, I remember lots of debate about using them in my days as a Noble M12 owner, the intercooler on that got no airflow due to poor aero so people tried all kinds of solutions.

 

Unless you have none to begin with.

IDK if it's going to be better. I suspect it would definitely be better at no-slow speed, because ambient flow<55mph is squat.

The fans I have I believe are 50 amps each. for a small fan, that's a LOT of power/CFM. I recall spending a lot of time trying to source a fan so small AND powerful.

As far as high ambient airflow goes, that would outpace the fan/baffle. Flap valves can be added to the baffle that open where there is excess ambient airflow, and close when the fan turns on. It's fairly common on aftermarket radiator shrouds. This does go back a few years, but there were some calculations done on the cross-sectional areas of the outlet duct and fan shroud to make sure I wasn't adding a choke point to the system. The short of it is, we'll never know until it's tried.

 

What about a GT2 style rear intake. So those scoops would be feeding the Intercoolers rather than the engine.

Because GT’s have fans in middle and intake left and right. Whereas Carreras have intake in middle and fans left and right.

Won’t help when stationary, but should help air start flowing at much lower speeds?

 

1st pic is what happened to my Brembo GTS BBK 380mm front and rear. I was due for rotors as I had worn the Type III pattern off the rotor. (46 Vane)



Old Replaced


2nd Pic is with the new Type III rotors that have 72 Vane, but the fresh Callipers have also now turned pink.



New Callipers and rotors



Last pic is the advertisement.
I have a Black and White theme going with my car.
Pink calipers is messing with the look.


Advertised ones


Its disappointing that these are supposed to perform better than painted ones. I specifically bought these believing they were a superior coating that would not drastically change. My stock Porsche callipers went an ugly brown.

The Brembo GTS do not have outer dust seals because they are meant for tracking. The work exceptionally well, and I am yet to brake in any other vehicle that has as good of a pedal feel as this setup. It’s just a huge annoyance that black callipers went Pink! Again!

 

We used to call them Brownbo’s - I remember this happening on a BBK I had in the 2000’s, the red Brembo’s would turn into a poop brown when they got heat cycled on track.

 

Yep, we have always called the Red ones Brownbo’s as well. But Pinkbo’s C’mon! These are hard anodised, not painted.

 

BBI Meth injection

3.8


Anyone have a contact at BBI? Tell them the 3.0’s need some love. Plenty of up graded turbo’s that sorely need a decent Y pipe and meth injection.

 

A decent fabricator can make you a Y pipe like that and piece together a nice hard line meth kit.

 

There is extremely limited space for a larger Y-Pipe on the 9A2, so it’s a much larger project than you’d think.

Think 3D scanning, CAD, rapid prototyping, testing for gains, making iterations, fabricating or printing the final piece itself. Then how big of a market is there? Surely I’d buy one, but the 992 is about to get a facelift and the aftermarket has moved on…

 

Update.

I’m testing some CR-S. 245/35/20 and 325/30/20.

They seem to really hook up well and are quiet. I’m interested to see if it cures my intermittent issue at the track. The car already feels more powerful, like the interference has subsided.

There has been some up grades on the COBB and perhaps it is playing nicer now with the M-Engineering PDK tune.

I am ready for more spring rate. I’m currently at 100/150,

20% increase would be 120/180
30% increase would be 130/200 (Some GT3 guys tested)

I think I will try 120/170.

I really liked the change from 75/150 to 100/150.

I’m looking at Aero options as well.