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Gearing Up for Long Term 987CS Ownership

2467 Views 50 Replies 11 Participants Last post by  likethebossiam
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Although this is my 2nd 987 and I've already had it since July of 2022, I figured I'd start up a thread I'll regularly update with modifications and maintenance notes during my (planned) long term ownership of this car.

As I mentioned above, this is my 2nd 987 - I had my first car, an '07 Cayman Base 5MT in Speed Yellow. My ownership unexpectedly came to an end as I met with an accident during a rainstorm, totalling out the car. Life happened, and although I kept an eye on the 987 market, nothing special really popped up till July of 2022, when I stumbled across a 34,000 mile '06 987CS 6MT in Seal Grey. Although the listing was short and the car was located a few hours away from me, I figured I'd send the seller a message and see what came of it. After a short FaceTime video of the car and coming to a prenegotiated price, I booked a PPI at Sublime Silverlake - the car passed with flying colours, with no signs of bore scoring, overrevs, or oil leaks. I flew down later that week to see the car in person, and after a short test drive, I drove the car back home to the Bay and took the car to my detailer for a 2-stage paint correction and full body ceramic coating.

It seems that the car spent the majority of its life on the East Coast and Chicago prior to the previous owner's custody of the car - during that time, the car wasn't used very often but was fastidiously maintained (as revealed by CarFax) with 3,000 mile or yearly oil changes, whichever came first. As the drive from SoCal to the Bay ticked the odometer about 3,000 past the previous owner's oil change, I went ahead with changing the oil with LiquiMoly 0w-40. I also decided to go ahead and try LiquiMoly's Engine Flush kit and Ceratech for that interval. Using CarFax also allowed me to track the history of ownership of my car - the car was originally custom ordered and sold by Porsche of Boston. Using VinAnalytics, the car was noted to be a 12/05 production car, so it's quite an early specification in the original production run of the 987.1CS.

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Not much was done after the ceramic coating and oil change until December of 2022, when I took the car out to its first track day at Buttonwillow. The car performed flawlessly, but as my pads were running thin and my rotors were lipped (both items noted in the PPI as "needed to be replaced soon" anyways), I decided to go ahead and splurge on upgrading the rotors from OEM cross-drilled to Sebro's slotted/vented rotors on all 4 corners. To complement this, I also switched from the OEM Brembo-Textar pads to Ferodo Racing's DS2500 compound - more on this later. Although the previous owner had several receipts of maintenance performed, including changing differential and transmission fluids in September 2021, there was no indication of a brake fluid flush. I took the opportunity to upgrade the fluid to the more robust Motul RBF600, paired with stainless steel lines. Overall, brake feel has significantly improved and it takes more heat/repeated heat cycling to experience any fade. My impression of the DS2500 pads, however, is not the greatest. As a hybrid street-track pad, it is great at neither - at high heat, brake force rapidly drops off, and at low heat, the optimal biting point is slightly deeper into the pedal than the OEM pads. I would recommend these for use at AutoX as they heat up quickly, but either a more aggressive pad for track use, or a more forgiving pad for street use.

As I am a university student, I stored the car for most of December after my trackday at a friend's place until I returned from winter break. On my drive back to my apartment, the motor made a large bang, but drove fine. Upon further inspection, I found out that my belt tensioner pulley had shattered (likely from age), prompting me to get a replacement at a Porsche dealer. I had a serpentine belt on hand already, thankfully, from my previous big order from FCP for my brakes. January was also when I did my 2nd oil change, moving to RedLine 5w-50. I also installed LN Engineering's X51 Baffle and Deep Sump kit, as I plan on tracking the car more and am working towards solving most of the oiling issues the M97 motors face. Last week, my regularly scheduled oil change prompted a change to Motul 300V upon recommendation of Apex1, and my friend Cactu also switching to 300V - firsthand, I did notice his car get quieter, with less valvetrain ticking. I've only been driving around on 300V for a few miles, so I need to pay more attention to that difference.

In January, I was also able to source and have HOUSE Automotive install PCCM+ in the car - it's made it a much more friendly daily, and I can't imagine life without CarPlay anymore (those bluetooth transmitters really suck!). The integration and fit/finish looks factory, and I highly recommend it to those who are looking for modern functionality while retaining an OEM look. More minor aesthetic additions include Clima Repair HVAC switches and an OEM red S badge from Suncoast, and I'm in the process of adding 7mm front and 15mm rear spacers to improve the exterior aesthetic of the vehicle. (Just waiting on the extended Numeric lug bolts to arrive). Next on the list are lowering springs as a holdover until I pick up a set of MCS or Moton coilovers for the car, paired with Elephant Racing camber plates and Tarrett's GT3 control arms - hoping to get the most on the track out of the car, so I'm sacrificing some streetability, but I am in the market for a 2nd car to daily regardless.

I also managed to pick up the OEM 987 Roof Transport System from a friendly guy on Rennlist, who also sold me his Guards Red 997 GT3 seat belts. I need to fix the driver's side assembly before I can install the pair, but I think they'll pair nicely with the big red calipers and the red S badging on the car. I've also bought 997 GT3 front brake ducting, which I need to get around to modifying and installing, and I've also got to pick up 997tt or 996GT2 rear ducting for the rear end of the car. I'm currently in the market for Numeric's SSK and shift cables - I recently drove a friend's 981 equipped with it and really enjoyed the precise shift feel, and driving my car back to back did ruin my factory shifter for me. Aside from that, an exhaust system is on the table, and I recently picked up an .stl file for GT4RS style quarter-window air ducts - I've got to buy a spare engine heat shield and carpet for my car that I can cut up and custom fabricate an airbox for before I can install those ducts, however. 18" wheels are also on the wishlist, although I've got to figure out a set I like other than BBS E88s and Apex's EC7RS. Today the car has just over 45,700 trouble free miles (knock on wood, of course), and continues to be a pleasure to drive.

Here's how the car was after the initial ceramic coating:
Wheel Tire Sky Vehicle Car


Here's how the car sits today (featuring Cactu's Cobalt Blue 987.1):
Tire Wheel Land vehicle Car Sky

Car Vehicle Sky Vehicle registration plate Automotive tail & brake light
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I'd be very interested in anything you find for the rear. I bought some rear ducts (996 GT2?) and it looked like I'd have to butcher them up to make them fit. They also didn't look like they would hang down far enough to do any good.
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Tire Wheel Car Automotive tire Vehicle

These rear brake ducts are GT2 vintage that are banded to the Tarett Cup LCA's. Works very well.
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I'd be very interested in anything you find for the rear. I bought some rear ducts (996 GT2?) and it looked like I'd have to butcher them up to make them fit. They also didn't look like they would hang down far enough to do any good.
I will let you know. I have also heard they need to be cut up, but only on the clips/mounting bracket, which won't imapct the effectiveness of the brake ducts. I also have heard that the 997tts brake ducts do just as well and need less modification. Thank you @Apex1 for the more clear picture - I hope the install will be as straightforward on the stock rear LCAs.
Over the weekend I received a late birthday present that I'm very excited to install on my car tomorrow - TechArt lowering springs! This should be a nice holdover until I pick up a set of coilovers to rebuild and install on the car, probably next year sometime.

These should drop the car the same as Cayman R springs do, albeit I recall the spring rates for the TechArt set being slightly higher/stiffer. I'll post pictures of the disassembly and install when I work on the car tomorrow.
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liketheboss, typically lowering springs for some reason lower the front slightly more than the rear, Hopefully TechArt has figured out this and adjusted the ride height as it does change the balance of the car. As a side note, I am changing over to Hartech oil pan from the deep sump LN design I have used for the past 5 years.
Interested in your feedback on those springs. Is it this set or another?

GLTHFJ60 - Yes, Eibach manufacturers those springs for TechArt, which are used by Sharkwerks as lowering springs, but most of their clients opt for full coilovers, so they're not a popular option. I was able to install the front springs today (~ 2 hours) with a friend and have significantly lowered the car. Once I install the rear springs next Thursday and get an alignment, I will share my thoughts on ride quality, etc. Be wary that the rear springs will take a while to install as you have to remove the lower control arm, trailing arm, and axles to get the knuckle low enough to remove the strut. We were losing daylight quickly so we opted to reassemble the stock suspension in the rear so I would have a drivable car.
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liketheboss, typically lowering springs for some reason lower the front slightly more than the rear, Hopefully TechArt has figured out this and adjusted the ride height as it does change the balance of the car. As a side note, I am changing over to Hartech oil pan from the deep sump LN design I have used for the past 5 years.
I've only managed to get the front springs on, so once I get the rear springs on next week and the suspension settles I'll report back on how the car sits. I'm glad you were able to choose between the Hartech and LN deep sumps! Please keep me posted on the install and your thoughts overall once you receive it from Slakker. I firmly believe that it is a better product than the LN kit solely because Hartech/Slakker are willing to provide numerical evidence and data about their deep sump.
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@GLTHFJ60 Here are a few pictures of how the car sits at the moment. The rear springs haven't been installed yet.


Hiding the rear of the car to "fake" the final look with DinkyHatchback's 987.



This is the front of the car after ~5 miles of driving and mostly settling the suspension. The gap is ~ 1 finger.



Here's the very odd way the car looks now with stock rear suspension and the Techart front suspension. Can't wait to get the rear springs on.
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In case you are thinking about a deep sump to prevent oil starvaton, my Hartech answer after the install of the LN deep sump 5 years ago.
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In case you are thinking about a deep sump to prevent oil starvaton, my Hartech answer after the install of the LN deep sump 5 years ago.
Like you, I already have the 2qt LN Engineering kit installed. I'll probably switch over to Hartech within the year.
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