Driving CarreraLightweightRacing's 996 'CLR' (briefly)
Discussion
9e 28 said:
Do RHD 964 RS not have PAS? Pretty sure they do. 964 C2 also has PAS and its brill. Prefer the 3.2C non assisted steering even more but it can be a real chore especially at parking speeds.
Correct but they also use 205 width tyres which is on the top end of the manageable spectrum, 225 fronts I think would be too much for a road car.snotrag said:
Very interesting.
I wonder how much of this applies to 986? As a new owner of a Boxster, this is the line I wish to go down.
I've already a good start point of a miley but solid, ultra-basic spec 2.7.
I've fitted coilovers, sorted the suspension and refurbed the Brembos with sport pads. Gearshift next on list.
Seats are the 'big ticket' item for making waves into the kerbweight and changing the driving feel, along with maybe a Momo wheel but the voice in my head says keep the airbag - maybe an alcantara retrim instead.
I like the CSR car linked above. Lightweight wheels would be great based on my past experiences, but of course they are magnitudes hard to find for a Porsche then a Japanese car.
Nice as that CSR 986 is there's nothing particularly groundbreaking there. You'll find all those mods and more written up on owners cars on boxa.net I wonder how much of this applies to 986? As a new owner of a Boxster, this is the line I wish to go down.
I've already a good start point of a miley but solid, ultra-basic spec 2.7.
I've fitted coilovers, sorted the suspension and refurbed the Brembos with sport pads. Gearshift next on list.
Seats are the 'big ticket' item for making waves into the kerbweight and changing the driving feel, along with maybe a Momo wheel but the voice in my head says keep the airbag - maybe an alcantara retrim instead.
I like the CSR car linked above. Lightweight wheels would be great based on my past experiences, but of course they are magnitudes hard to find for a Porsche then a Japanese car.
Beautiful Car, review and pics! 
Mini questions to the owner, in terms of the exhaust system. Are you using CLR Titanium? How is the sound, let's say you are travelling on motorway, in terms of the noise? More important, did you also replace the CATS with their 100 or 200 cel versions? how is the performance of the CAT's in terms of adaptability. Are they giving any annoying cel/ check engine errors ?
Apologies if these already been addressed before on any other discussion...
Mini questions to the owner, in terms of the exhaust system. Are you using CLR Titanium? How is the sound, let's say you are travelling on motorway, in terms of the noise? More important, did you also replace the CATS with their 100 or 200 cel versions? how is the performance of the CAT's in terms of adaptability. Are they giving any annoying cel/ check engine errors ?
Apologies if these already been addressed before on any other discussion...
ooid said:
Beautiful Car, review and pics!
Mini questions to the owner, in terms of the exhaust system. Are you using CLR Titanium? How is the sound, let's say you are travelling on motorway, in terms of the noise? More important, did you also replace the CATS with their 100 or 200 cel versions? how is the performance of the CAT's in terms of adaptability. Are they giving any annoying cel/ check engine errors ?
Apologies if these already been addressed before on any other discussion...
Hi ooid, the car in currently in this state of tune:Mini questions to the owner, in terms of the exhaust system. Are you using CLR Titanium? How is the sound, let's say you are travelling on motorway, in terms of the noise? More important, did you also replace the CATS with their 100 or 200 cel versions? how is the performance of the CAT's in terms of adaptability. Are they giving any annoying cel/ check engine errors ?
Apologies if these already been addressed before on any other discussion...
-BMC filter+ CLR CAI Modification
-CLR 200 cell cats
-Lexan windows (Rear sides+Rear screen) Hardcoat treated scratch resistant
-CLR Carbon Roof
-Lightweight Race Battery PC680
-OEM Porsche CUP steering wheel
-CLR PAS+AC System conversion
-Underdrive pulley Kit (engine mod required)
-Wiper delete kit
-OEM Porsche Dash blanking switch set
-OEM Porsche 997 Short Shift Kit
-GT3RS Rad modification & LTT 71.C
-RSS Engine mounts
-CLR bespoke Strip/re-trim (Alcantara)
-LWFW (AASCO) + CLR Gearbox mod
-ZF Performance Stage 2 clutch cover
-ZF Performance Stage 2 clutch plate
-OEM Porsche Release bearing
-OEM Porsche Dash delete and Misc trim panels
With the following still to come:
-CLR Throttle
-CLR Re-map (VGS motorsport)
-CLR Titanium exhaust
-CLR Carbon Buckets
-Seat mounts
-CLR Carbon wings
-CLR Carbon bonnet
-CLR Carbon Ducktail
-CLR Carbon doors (with bracing for road approval)
-CLR Carbon Door cards
-CLR Carbon Cup mirrors
-CLR Lightweight T6061 bespoke Forged alloys custom ET's
-Ohlins Coilover suspension
-CLR Carbon Strut brace front+rear
So currently no Titanium exhaust. I have a stock Porsche PSE at present. There are no issues with the 200cel cats. You will however have problems with 100cel or de-cat systems. In terms of sound, she is a pussycat at idle, open her up though and you wont be able to remove the smile
I'll upload some sound clips once I have the Ti exhaust fitted. CarreraLightweightRacing said:
the following still to come:
-CLR Throttle
-CLR Re-map (VGS motorsport)
-CLR Titanium exhaust
-CLR Carbon Buckets
-Seat mounts
-CLR Carbon wings
-CLR Carbon bonnet
-CLR Carbon Ducktail
-CLR Carbon doors (with bracing for road approval)
-CLR Carbon Door cards
-CLR Carbon Cup mirrors
-CLR Lightweight T6061 bespoke Forged alloys custom ET's
-Ohlins Coilover suspension
-CLR Carbon Strut brace front+rear
As I said in a previous post, love what has been done already- the next developments sound great- how much more weight will be lost with all the carbon and titanium parts? At least another 100 kg, surely?-CLR Throttle
-CLR Re-map (VGS motorsport)
-CLR Titanium exhaust
-CLR Carbon Buckets
-Seat mounts
-CLR Carbon wings
-CLR Carbon bonnet
-CLR Carbon Ducktail
-CLR Carbon doors (with bracing for road approval)
-CLR Carbon Door cards
-CLR Carbon Cup mirrors
-CLR Lightweight T6061 bespoke Forged alloys custom ET's
-Ohlins Coilover suspension
-CLR Carbon Strut brace front+rear
Thank you so much! One last question 
Did you keep the AC? I was reading the famous 300k 996 thread recently, the owner mentioned that he get rid of AC, as its a bit heavy and also the condensers in front of the radiators were cutting the performance of cooling system.
http://www.pistonheads.com/gassing/topic.asp?h=0&a...
It's great to see an aircraft engineer chose 996 body to play around though, I must admit!
Did you keep the AC? I was reading the famous 300k 996 thread recently, the owner mentioned that he get rid of AC, as its a bit heavy and also the condensers in front of the radiators were cutting the performance of cooling system.
http://www.pistonheads.com/gassing/topic.asp?h=0&a...
It's great to see an aircraft engineer chose 996 body to play around though, I must admit!
ooid said:
Thank you so much! One last question
Did you keep the AC? I was reading the famous 300k 996 thread recently, the owner mentioned that he get rid of AC, as its a bit heavy and also the condensers in front of the radiators were cutting the performance of cooling system.
http://www.pistonheads.com/gassing/topic.asp?h=0&a...
It's great to see an aircraft engineer chose 996 body to play around though, I must admit!
Hi ooid, I detailed the aircon removal in this thread Did you keep the AC? I was reading the famous 300k 996 thread recently, the owner mentioned that he get rid of AC, as its a bit heavy and also the condensers in front of the radiators were cutting the performance of cooling system.
http://www.pistonheads.com/gassing/topic.asp?h=0&a...
It's great to see an aircraft engineer chose 996 body to play around though, I must admit!
Whitean3 said:
CarreraLightweightRacing said:
the following still to come:
-CLR Throttle
-CLR Re-map (VGS motorsport)
-CLR Titanium exhaust -14kg
-CLR Carbon Buckets -30kg
-Seat mounts
-CLR Carbon wings -6kg
-CLR Carbon bonnet -9kg
-CLR Carbon Ducktail -5kg
-CLR Carbon doors (with bracing for road approval) -30kg
-CLR Carbon Door cards
-CLR Carbon Cup mirrors -1kg
-CLR Lightweight T6061 bespoke Forged alloys custom ET's -17kg
-Ohlins Coilover suspension -1.5kg per unit
-CLR Carbon Strut brace front+rear
As I said in a previous post, love what has been done already- the next developments sound great- how much more weight will be lost with all the carbon and titanium parts? At least another 100 kg, surely?-CLR Throttle
-CLR Re-map (VGS motorsport)
-CLR Titanium exhaust -14kg
-CLR Carbon Buckets -30kg
-Seat mounts
-CLR Carbon wings -6kg
-CLR Carbon bonnet -9kg
-CLR Carbon Ducktail -5kg
-CLR Carbon doors (with bracing for road approval) -30kg
-CLR Carbon Door cards
-CLR Carbon Cup mirrors -1kg
-CLR Lightweight T6061 bespoke Forged alloys custom ET's -17kg
-Ohlins Coilover suspension -1.5kg per unit
-CLR Carbon Strut brace front+rear
Great stuff - thanks both cmoose and CLR, very cool project and a customarily informative write up of the drive 
I'd love to take a similar approach with a 986 - it's such a good drivers car but I think that if you were to undertake a process of distillation (peel back a couple of layers of weight / refinement etc., concentrate some of the more desirable sensations) you could make something super special for semi-realistic sums of money.
I'd love to do the something similar to the CLR / CSR with a 996 as I'm more of a coupe than convertible type, but short of starting with a write-off, the costs look two-three times higher to under take the same sort of work as on a 986. The end result might be a lot faster and at least a little more desirable depending on your point of view and level of commitment (financial chops too), but I think the 986 remains a compelling choice, notwithstanding being a little different to a 911 (mostly behind the back wheels!).
A 964RS is definitely on my lotto list (wanted one since they were new), only now it looks like it would need to be a roll over, perhaps with a lightly optimised 996 as a daily snotter
I'd love to take a similar approach with a 986 - it's such a good drivers car but I think that if you were to undertake a process of distillation (peel back a couple of layers of weight / refinement etc., concentrate some of the more desirable sensations) you could make something super special for semi-realistic sums of money.
I'd love to do the something similar to the CLR / CSR with a 996 as I'm more of a coupe than convertible type, but short of starting with a write-off, the costs look two-three times higher to under take the same sort of work as on a 986. The end result might be a lot faster and at least a little more desirable depending on your point of view and level of commitment (financial chops too), but I think the 986 remains a compelling choice, notwithstanding being a little different to a 911 (mostly behind the back wheels!).
A 964RS is definitely on my lotto list (wanted one since they were new), only now it looks like it would need to be a roll over, perhaps with a lightly optimised 996 as a daily snotter
Thanks again, Air-Con removal pics look very helpful. I'm kinda happy now that my old 986 do not have an AC, avoiding another painful maintenance and worry for cooling
Did you use any CFD simulation before starting your work? I know they could be a proper pain, cleaning up the 3d CAD model and making sure that all geometry is quite representing a possible driving situation but recently was wondering whether if there can be any tweaks in terms of the front bumper and air intake geometry to take the air in much more efficient conditions? Found a random pic(not 996) on the internet, I do not know if it's quite a precise CFD analysis but would have been interesting to see a CFD diagram and an engineer's comment on it.
Did you use any CFD simulation before starting your work? I know they could be a proper pain, cleaning up the 3d CAD model and making sure that all geometry is quite representing a possible driving situation but recently was wondering whether if there can be any tweaks in terms of the front bumper and air intake geometry to take the air in much more efficient conditions? Found a random pic(not 996) on the internet, I do not know if it's quite a precise CFD analysis but would have been interesting to see a CFD diagram and an engineer's comment on it.
NAS said:
Can I ask you how much of a pain it was to 'eintragen' all these things?
Especially the steering wheel interests me, as I am 6'7" tall and am toying with the idea of a 986/996, and I'd love it if the steering wheel could be moved a lot closer to me (for leg room).
Hi NAS, it is a major faff getting all of this TUV approved. Very expensive, but once done, having these CLR's meet TUV approval will at least show the engineering integrity of the project meets very stringent guidelines. I have consulted with the inspector every step of the way so that when finished, I shouldn't have any issues getting it approved.Especially the steering wheel interests me, as I am 6'7" tall and am toying with the idea of a 986/996, and I'd love it if the steering wheel could be moved a lot closer to me (for leg room).
On your other point, try a dash delete first, many tall drivers say it really helps. The CUP steering wheel also comes with an additional spacer ring to bring it even closer to the driver. I never fitted this though as it would be a bit of a stretch to indicate
Edited by CarreraLightweightRacing on Monday 19th September 10:19
I'd be very happy with that steering set up. The whole car appreals but think i'd prefer a different spring damper set up, lots of camber everywhere, super sharp and it sitting as low as i could get it without scraping the floor off of it on B roads.
Absolutely spiffing! Thats the joy of a car bit to this spec. it's a lovely light blank canvass that you can easily set up to your own specific requirements. Absolute hoot on the road at any speed. A propper driving tool without the need to achieve warp speeds to enjoy it.
Cmoose bangs on about Posche producing a car like this regularly and I agree completely. No need for the frankly rediculous 991R. Just make a cooking C2, take all of the weight out of it and throw away the active systems (after killing the team that designed them of course). Give everyone a chance to drive a car that feels like it has a little bit of humanity built into it..
Absolutely spiffing! Thats the joy of a car bit to this spec. it's a lovely light blank canvass that you can easily set up to your own specific requirements. Absolute hoot on the road at any speed. A propper driving tool without the need to achieve warp speeds to enjoy it.
Cmoose bangs on about Posche producing a car like this regularly and I agree completely. No need for the frankly rediculous 991R. Just make a cooking C2, take all of the weight out of it and throw away the active systems (after killing the team that designed them of course). Give everyone a chance to drive a car that feels like it has a little bit of humanity built into it..
anonymous said:
[redacted]
I am not sure a 991/981 could ever "feel" like proper lightweight car (even if you could possibly make it quite light) - they are just quite big and also the interior layout is more suitable for a plush interior (see endless discussions on stitiching choices) than a pared back one with that high center console etc. - this is properly far away from a 996 (or earlier) interior. anonymous said:
[redacted]
for me it is just the opposite, I much prefer a dashboard that does not connect to the floor. My favourite was my F355, but a 996 without centre console gives the same feeling. That combined with a nice narrow seat (996 Clubsport buckets come to mind), harnesses, no sound system, no carpets/sound insulation/plastic windows and a wheel without airbag sounds perfect to me. I would like an aircon though. Some lightweight forged wheels and possible PCCBs, and I'd have my perfect car. Gassing Station | Porsche General | Top of Page | What's New | My Stuff