Cayman R Chat

Cayman R Chat

Author
Discussion

frayz

2,234 posts

125 months

Monday 19th April
quotequote all
andy.yeow said:
Certainly doesn't feel like its killed it, steering is marginally heavier, be interesting to put on a dyno and actually see what impact it has.

if it has lost 20 hp then I guess I better make some power mods to get it back in line smile
For the cost of getting back another 20bhp, I'm not sure id bother. Headers and intake will net you the biggest bang per buck. Still not cheap though.
5kg is quite a bit of added unsprung mass and i dare say you will feel the gyroscopic effect in the steering quite noticeably, i cant say id be happy to take that kind of hit.
Having said that, if the brakes net you a significant improvement in lap time, maybe you'll be happy with that.

ras62

1,055 posts

122 months

Monday 19th April
quotequote all
andy.yeow said:
Certainly doesn't feel like its killed it, steering is marginally heavier, be interesting to put on a dyno and actually see what impact it has.

if it has lost 20 hp then I guess I better make some power mods to get it back in line smile
Surely the reason the Cayman R is appreciated is because of its weight reduction and well judged suspension? As for increasing power, forget it. Power absorbed due to the increased rotational mass is felt everywhere in the rev range. It effectively lowers the torgue numbers all across the curve. In fact the numbers suggest are maybe conservative, they don't account for the front wheels, just what you would measure on a rolling dyno.

Edited by ras62 on Monday 19th April 08:53

beanoir

1,148 posts

161 months

Monday 19th April
quotequote all
I know a few of you guys are already booked and have the t-shirt! But for those who might have missed it or have not yet booked their ticket, don't forget the Cayman R & Spyder anniversary event that Pete has organised is just a couple of weeks away!

Tickets here: https://www.eventbrite.co.uk/e/126891896077/

T-shirts here: https://the-piston-works.creator-spring.com/listin...

See you there!!!



frayz

2,234 posts

125 months

Monday 19th April
quotequote all
beanoir said:
I know a few of you guys are already booked and have the t-shirt! But for those who might have missed it or have not yet booked their ticket, don't forget the Cayman R & Spyder anniversary event that Pete has organised is just a couple of weeks away!

Tickets here: https://www.eventbrite.co.uk/e/126891896077/

T-shirts here: https://the-piston-works.creator-spring.com/listin...

See you there!!!


Yep, looking forward to it biggrin

Escy

2,942 posts

115 months

Monday 19th April
quotequote all
ras62 said:
Surely the reason the Cayman R is appreciated is because of its weight reduction and well judged suspension? As for increasing power, forget it. Power absorbed due to the increased rotational mass is felt everywhere in the rev range. It effectively lowers the torgue numbers all across the curve. In fact the numbers suggest are maybe conservative, they don't account for the front wheels, just what you would measure on a rolling dyno.

Edited by ras62 on Monday 19th April 08:53
Don't go near any hills Andy, you might not get all the way up them now you've totally ruined your car. rolleyes

TommyRS_

22 posts

34 months

Monday 19th April
quotequote all
Will tickets be available "on the door" or only in advance on the run up to the event?

Thanks

frayz

2,234 posts

125 months

Monday 19th April
quotequote all
TommyRS_ said:
Will tickets be available "on the door" or only in advance on the run up to the event?

Thanks
I believe advance only.

Andyoz

1,916 posts

20 months

Monday 19th April
quotequote all
Right £50k for this and no PSE...."this is a car that should only go one way in value"
Sorry but I really think this st show needs to end...

https://www.autotrader.co.uk/car-details/202103310...



Edited by Andyoz on Monday 19th April 13:36

frayz

2,234 posts

125 months

Monday 19th April
quotequote all
Andyoz said:
Right £50k for this and no PSE...."this is a car that should only go one way in value"
Sorry but I really think this st show needs to end...

https://www.autotrader.co.uk/car-details/202103310...



Edited by Andyoz on Monday 19th April 13:36
"Investment grade" is always my favourite line biggrin

Andyoz

1,916 posts

20 months

Monday 19th April
quotequote all
If I was asking £50k I'd get a pro to clean and photo the car. Dealers are taking the piss now and getting lazy. Sign of a bubble market IMO.


TommyRS_

22 posts

34 months

Monday 19th April
quotequote all
frayz said:
I believe advance only.
Thank you.

RichDS

235 posts

39 months

Monday 19th April
quotequote all
Andyoz said:
Right £50k for this and no PSE...."this is a car that should only go one way in value"
Sorry but I really think this st show needs to end...



Edited by Andyoz on Monday 19th April 13:36
Reckon mine was for sure a bargain after this especially since mince has the proper pcm!!

HokumPokum

1,796 posts

171 months

Monday 19th April
quotequote all
andy.yeow said:
HokumPokum said:
did you weigh the difference between oem and AP ?
Yes we did, can’t remember the exact about but was about 4/5kg a corner, steering feels marginally firmer.

Hopefully one day will be at events where people have a try and see what they think
Tx. The only reason I asked was because of the 390/370 size was is a lot larger than even the 350mm PCCB. They do look awesome.

The PCCB actually fit the OEM 18" cayman wheels and I was wondering if you were going for a forged 19" wheel to offset the 4kg? of course being further from the brakes weight loss on the wheels and tyres is more effective pound for pound.

andy.yeow

135 posts

67 months

Monday 19th April
quotequote all
HokumPokum said:
Tx. The only reason I asked was because of the 390/370 size was is a lot larger than even the 350mm PCCB. They do look awesome.

The PCCB actually fit the OEM 18" cayman wheels and I was wondering if you were going for a forged 19" wheel to offset the 4kg? of course being further from the brakes weight loss on the wheels and tyres is more effective pound for pound.
tbh I havent decided just yet as its taken a year to get these sorted, ill probably do a track day with the spyders to see how it performs first.

if im not happy with the weight increase, its fairly simple for them to take it down to a 370/350, problem is now I cannot remember what the difference was, it might have been 4/5kg total at the front end and less at the back.


Slippydiff

12,158 posts

189 months

Wednesday 21st April
quotequote all
andy.yeow said:
ras62 said:
Yes. Consider the wheel and tyre weigh approx 20kg you have effectively added 25% to the unsprung mass on each corner, that effects the spring and damper. Trying to accelerate that extra 20kg of rotating mass would be waste probably 20 bhp.
Certainly doesn't feel like its killed it, steering is marginally heavier, be interesting to put on a dyno and actually see what impact it has.

if it has lost 20 hp then I guess I better make some power mods to get it back in line smile
Stuck these on a 1M Coupe some years ago (BGD refaced the discs actually) they replaced the hopeless and heavy OE single piston sliding cast iron "boat anchor" front calipers and heavy two piece radial pin floating front discs. :



Despite the disc size increasing to 378mm, and the piston count increasing by 5, the weight saving was similar to the numbers you've mentioned (but possibly more IIRC), the transformation was pretty mind-boggling, whereas before the suspension tended to "bludgeon" cat's eyes into the Tarmac, afterwards it floated over them to the point you didn't notice the front end hitting them, but the real eye opener was the steering response (faster) and turn in (specifically the rate of turn in) it was on another level altogether.

It was very clear the lighter components were allowing the front dampers and springs to work properly, but they also made the steering lighter and the front of the car scarily planted (they run 245 section front tyres as standard) ...

I'm probably in the minority here, but after I'd fitted new discs and pads along with Endless fluid and the GT3 M/C to my R, I thought the stock brakes were more than up to the job, even when used at brain out "reckless" speeds on the road.



K400RDY

43 posts

69 months

Thursday 22nd April
quotequote all
Slippydiff said:
Stuck these on a 1M Coupe some years ago (BGD refaced the discs actually) they replaced the hopeless and heavy OE single piston sliding cast iron "boat anchor" front calipers and heavy two piece radial pin floating front discs. :



Despite the disc size increasing to 378mm, and the piston count increasing by 5, the weight saving was similar to the numbers you've mentioned (but possibly more IIRC), the transformation was pretty mind-boggling, whereas before the suspension tended to "bludgeon" cat's eyes into the Tarmac, afterwards it floated over them to the point you didn't notice the front end hitting them, but the real eye opener was the steering response (faster) and turn in (specifically the rate of turn in) it was on another level altogether.

It was very clear the lighter components were allowing the front dampers and springs to work properly, but they also made the steering lighter and the front of the car scarily planted (they run 245 section front tyres as standard) ...

I'm probably in the minority here, but after I'd fitted new discs and pads along with Endless fluid and the GT3 M/C to my R, I thought the stock brakes were more than up to the job, even when used at brain out "reckless" speeds on the road.
Did you fit OEM discs and pads or an upgrade to your R ?

breakfan

130 posts

112 months

Thursday 22nd April
quotequote all
Slippydiff said:
I'm probably in the minority here, but after I'd fitted new discs and pads along with Endless fluid and the GT3 M/C to my R, I thought the stock brakes were more than up to the job, even when used at brain out "reckless" speeds on the road.
Hi Slippydiff - I have your old car! Loving it so far and its already been to the Alps and back. Out of interest did you fit aftermarket discs or pads? They squeak a lot around town / at low speeds despite having plenty of life left

Slippydiff

12,158 posts

189 months

Thursday 22nd April
quotequote all
breakfan said:
Hi Slippydiff - I have your old car! Loving it so far and its already been to the Alps and back. Out of interest did you fit aftermarket discs or pads? They squeak a lot around town / at low speeds despite having plenty of life left
K400RDY said:
Did you fit OEM discs and pads or an upgrade to your R ?
Zimmerman (they're an OE supplier) OE spec discs and IIRC Textar (again an OE supplier) pads.

Slippydiff

12,158 posts

189 months

Thursday 22nd April
quotequote all
breakfan said:
Hi Slippydiff - I have your old car! Loving it so far and its already been to the Alps and back.
Congratulations !! It's a wonderful car. Glad you're enjoying it and clocking the miles up.
Any images of the car in the Alps ?

BrotherMouzone

2,722 posts

140 months

Thursday 22nd April
quotequote all
breakfan said:
Hi Slippydiff - I have your old car! Loving it so far and its already been to the Alps and back. Out of interest did you fit aftermarket discs or pads? They squeak a lot around town / at low speeds despite having plenty of life left
Guards Red looks great cool