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RPM Technik Cayman Upgrade

Looks a dear do to me! I'd rather add a Caterham 7 to the stable for that money and keep my Cayman S standard but each to their own.

 
I've done a few similar upgrades to my 987 for closer to £10k. Personally get more enjoyment from doing it a-la-carte but expect some people prefer that it's dropped on as a package which probably helps resale value.

 
Some thoughts, looking at the various elements, my estimated parts cost below is based on individual supply prices which could be:

Clutch £600

Flywheel £1,200

LSD (Guards) £3,000

Crown wheel £1,200

- all from USA sources

Brakes £6,500 (a number based on Brembo GT)

Ohlins coilovers £2,500 + PASM delete £450

ARBS £300

19" HRE wheels set + Cup2 tyres £6,250

Sports exhaust £1,250

GT4 Front PU and bits £1,500

Custom diffuser £500

Custom rear wing £800

Parts above around £24k plus steering wheel and lots of labour.

No other suspension components were mentioned in article but I presume additional parts are required for a decent set up.

Obviously RPM would have good supply price arrangements but the parts are not cheap which makes the overall cost rather a lot and as stated, gets close to the buy cost of a low mileage GT4.

The question for me is if I was starting from scratch, would I want all parts and the package or a subset and what might that be?

- Brake upgrades can be between £2,000 and £6,500 - is the increment worthwhile?

- Drive train £6,000 on my estimate above, you could spend £10k and get a lot more power

- Suspension would probably involve more parts than article noted to get best results

- Wheels - 19" good, HRE too expensive a choice

- Aero at "my" £2,700 estimate not too expensive v TechArt or v GT4 front and rear PU + wing. As stock Cayman S body has front lift and rear downforce (SportAuto Super Test) aero needs to be addressed for comfort on high speed curves (think Blanchimont)

Modifying ain't cheap (ask me how I know) but RPM has invested development time and process and I for one am pleased that at last a UK firm has a thought out improvement programme for Caymans.

Their 996/997 CSRs are well regarded and I know of professional drivers who hold them in high regard.

"You pays your money and you makes your choice"

 
RPM have released further information covering all their CSR models, the Cayman details are at:

[link]https://rpmtechnik.co.uk/csr-conversions/981-csr/[/url]

 
Recently investigated this … for a possible change in ownership experience.

Engine ... IPD Plenum / Throttle Body / Air Filter / Cobb Tuning Package

Brakes ... Calipers / Rotors / Lines / Pads / Fluid

Exhaust … SS Headers & Sport Silencer

Body …..… Existing front PU given GT4 style vents & mesh

Not wanting a focused track car I considered that the existing PASM would be good enough to handle the modest power increase ? I really like how it currently handles the demanding B roads I spend most of my time on.

However … will this package make enough of a difference to warrant the outlay vs. changing the car for something else OR should I just learn to drive it better :ROFLMAO:

 
Engine is OK.

Brake mods, what does it consist of?

Exhaust whose manifolds and what catalyst 200 cell? Do you have centre radiator?

 
Ralph ...

Brakes

New front calipers with 355 x 32 rotors on bells (suppliers ?) - Pagid R29 pads

Standard rear brakes - Pagid R29 pads

Braided line kit - Performance Fluid

Cost of materials ~ £3k plus VAT

Exhaust

No supplier / cat. details - cost of materials £5k plus VAT

Centre Radiator

None at present, none proposed

My enquiry was a first pass discussion where I received a quote - breakdown of parts and labour. Only item missing is labour for the exhaust, at that price hopefully it`s included ?

 
Any upgrades on a Porsche are so so expensive with most only being a minimal improvement.

Maybe Pads Tyres and brake fluid are reasonably priced upgrades especially for road and occasional track use.

 
Agreed Cliff … says one who`s been modifying a Mk1 Golf GTI for the past twenty years and not getting much quicker :rolleyes: :p

I already have `the best` ? road tyres … PS4S - brakes are original and done 30k so up for replacement fairly soon … just improved discs, pads and fluid then ?

I have a set of CR wheels with Cup 2`s which in theory `should fit` but in practice are rather tight for my liking. Fitting Cup 2`s to the existing 20"`s may be an option but benefit for road use ... ?

The car is certainly quick enough for me, in Sport Plus on manual paddle shift with PSE off ... it is absolute heaven. Front end could be better, is no match for a 718 in that department - what might improve that ?

Looks like lockdown `fever` has taken hold of me … :ROFLMAO:

 
Andrew,

Not that my approach to my old 981 Cayman S was right (I did have some evolutions)..buying fitted packaged solutions avoids a lot of hassle but I found the learning very fulfilling.

Brakes, I first upgraded to 991.1 S front brakes which gave me 6 piston (v 4 piston) calipers and slightly larger disks (£1.8k fitted). Then fed up with cleaning all the dust out of the disks' holes I replaced OEM disks with Girodiscs (£2.5k fitting 1.5hrs). I tried various pads and ended up with Ferodo DS1.11 and DS 2500 front and rear (£450 and £270 respectively). I never bothered with brake lines. Brake fluid was Castrol Racing SRF, which at £50 a litre is OK for lots of track days but overkill for road. So if I were doing it again, I would go either straight to Girodiscs on OEM calipers or 991.1 S callipers and Girodiscs, pads being a use directed choice. I also changed the master cylinder for a 991.1 GT3 part (£300 + 2 hours and 2 litres of fluid for a thorough bleed)

Exhaust, I found that a manifold with a low cell count cat will with hard use, destroy the cat and cause MOT emissions failure. As my mate in the USA says, it is a matter of when, not if. My Cargraphics 200 cell manifolds were rebuilt two times over 30k miles and 55 track days. Luckily I live by their factory, have lent them my car for testing, and the cat supplier gives Cargraphics 2 year warranty, otherwise £500 each manifold. I kept the OEM rear section of the sports exhaust system which I assume RPM would do. Cargraphics (there are other brands) manifolds are c£2.8k the pair + fitting.

IMG-4140.jpg


Centre Radiator - I had one fitted to add extra cooling capacity but mine had a 3.8L engine and would be running on track often at higher than normal ambient temperatures. It is unlikely you would need this.

Engine/tune - you might ask if they fit the larger 3.8L throttle body, also make sure the Cobb map = the hardware upgrades. The BMC air filters (£140 a pair) are fine but you gain only at the very top of the rev range. This is how much debris I got out of one side after 6 months, maybe 6 track days, debris pile is about 25mm square, 5mm high - I change them frequently....

IMG-4884.jpg


I think if you concentrated on getting more air and fuel into and combustion out of the car you would find a difference in delivery and also power. Exhaust, you can spend £££s on exhausts, but what is the purpose, if for engine efficiency then fine, a decent manifold with merge collector will do that so that is the feature to look for. Intake together with exhaust is where the power gains can be made so IPD + larger throttle body + manifold + tune is where to put your money. I'd forget the brake upgrade and the GT4 front.

Ralph

 

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