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So just by observation, that clutch pulley works like a Centrifugal clutch? No boost at idle?
Corrsct, that's one of the great things about this kit. No parasitic supercharger draw when you don't need the boost, so my cruising along highway mileage is still in the mid 20s and the boost only comes on when you need it. Works more like a turbo, but with zero boost lag as those clutches engage instantaneously.
I have about 30k miles on it and you can see how much clutch material is left, so should last a very long time.
Looks like the kit came with new head gaskets! Lower compression ones? Any details on that?
Correct, that's how RUF lowers the standard compression to make the engine hold up over time with the addition of the boost pressure. That's why the other forced induction kits that just bolt onto the motor at the stock compression usually compromise the engine longevity.
No, but have the bungs to do that. In fact, that's a great reminder for me while I have the exhaust off the car as I have the bungs mounts in the closet with the gauge stuff so should take those to my muffler guy and have them put on and install plugs in them temporarily until I do the rest of the gauge stuff.
Feeding my Excessive Preventative Maintenance & Mods Disorder (EPMMD)
Project started:
Function First Transmission Mounts, new OEM water pump and thermostat, 3rd radiator kit, coolant flush, replace exhaust manifold, gaskets and O2 sensors, new OEM tensioner assembly and serpentine belt...
Well, this is embarrassing. I mean, why I'm even bothering to post after @Petza914 and @Emc2design is reason enough to turn in my Man Card.
Regardless...
Installed an @Antigravity Batteries yesterday. Damn, the weight difference from the Bosch AGM that was in there is ~35 lbs. And the flavor I purchased has almost twice the CCA and 3x the expected longevity.
If it lasts as long as it's supposed to, this will be a great value.
Bob
A nice feature about our cars is the adjustability of the battery cradle. My old Bosch was 4" or 5" longer, but it was just a matter of moving a bracket to have the same snug fit as before. By the way, the built-in jump starter(!!), optional battery tracker/health device and app are pretty cool.
Well, this is embarrassing. I mean, why I'm even bothering to post after @Petza914 and @Emc2design is reason enough to turn in my Man Card.
Regardless...
Installed an @Antigravity Batteries yesterday. Damn, the weight difference from the Bosch AGM that was in there is ~35 lbs. And the flavor I purchased has almost twice the CCA and 3x the expected longevity.
If it lasts as long as it's supposed to, this will be a great value.
Bob
A nice feature about our cars is the adjustability of the battery cradle. My old Bosch was 4" or 5" longer, but it was just a matter of moving a bracket to have the same snug fit as before. By the way, the built-in jump starter(!!), optional battery tracker/health device and app are pretty cool.
Haha, I installed one last month. Yes it was hard getting over the price but man does that starter whirl now like never before. I have no regrets.
Plus side, it shuts off if you leave something on. No more dead battery.
Haha, I installed one last month. Yes it was hard getting over the price but man does that starter whirl now like never before. I have no regrets.
Plus side, it shuts off if you leave something on. No more dead battery.
@Khloesdad you hit the nail on the head: I had to seriously swallow hard when I hit "Buy" at that price but, damn, it's so nice -- the car starts in half the time as before, and it wasn't bad to begin with. The peace of mind the battery management system provides is unmatched, too.
Swapped from my 18” Carrera IVs to a set of 19” Carrera S IIs. First time having black wheels on the car. Also changed for Michelin PSS to PS4S tires as part of the swap. Excited to put some miles on them.
New front pads & rotors (Hawk & Sebro cross-drilled), ceramic coated all four calipers & wheels. Hoping to be able to keep them clean more easily going forward.
I DIY'd the PDK clutch fluid and AWD clutch at the rear of the front differential today, took about 5 hours total (leisurely pace) with it on jackstands. Both are 60k mile/6 year replacements, my 2010 TT just hit 60k so it was overdue time wise. The PDK clutch fluid had been replaced before according the service records, the AWD clutch never had been done. There were a few lessons learned:
If you are just replacing the PDK clutch fluid (as opposed to reworking the transmission), you almost certainly don't need a PIWIS
I have a PIWIS clone but wanted to test the Plant 9 procedure linked below on how to change the fluid without a PIWIS. Using the procedure I filled the fluid up to the top following the steps described. I then hooked up my PIWIS and ran through the PDK fill steps, it was clearly working as I could hear the solenoids switching. After running the PIWIS the fluid level was the same, it didn't change at all from where it was using the Planet 9 procedure. I attempted to pump in a little more fluid and it immediately ran out the hole. Depends on your risk tolerance but I'd have no concerns using this procedure without a PIWIS to do a simple fluid change.
You only replace about 60% of the PDK clutch fluid
Only about 3 liters of the 5.2 liter capacity comes out using the WM drain procedure, so it's actually diluting the old fluid rather than completely replacing it. Quite a bit remains in the fluid cooler, valve body, and other places and doesn't drain out of the pan. (Side note but this is why a drain/fill doesn't need a PIWIS compared to a disassembly and refill.) A little bit more comes out by dropping the pan from what I've read. I didn't do this as Porsche states the pan must be replaced if removed and the filter (embedded in the pan) interval is 120k miles/12 years.
The fill holes are small, use a pump with a small tube (like 1/4 inch)
Even though the fill plugs for the PDK and AWD clutch are pretty big, the actual hole size inside both is much smaller. I figured this out as fluid was running out of the hole too soon as the pumped fluid was splashing against the wall and coming out. By sticking my pinky in there (can't really see it) I could feel where the opening was and use that to aim the tube when inserting it. Once it's lined up with the hole the tube goes in further and doesn't splash out.
If it's a humid day, do the AWD clutch first (or turn of the AC)
Since the engine has to run during the PDK fill process, I didn't realize I had the AC compressor on and condensation was forming. The when doing the AWD drive the damn thing dripped on me pretty much the whole time. Annoying.
Whole thing cost me about $100 for the fluids and wasn't hard though it took a good part of the day.
09-06-2020, 12:21 PM
