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What makes a club sport a club sport?
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morghen  



Joined: 21 Jan 2005
Posts: 8177
Location: Romania

PostPosted: Tue Jun 04, 2013 5:51 pm    Post subject: Reply with quote

I've weighed mine at 1170Kg with 1/2 tank of gas, no spare wheel.
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ideola  



Joined: 01 Oct 2004
Posts: 15505
Location: Woodstock IL

PostPosted: Tue Jun 04, 2013 10:48 pm    Post subject: Reply with quote

Carrera RSR wrote:
So 2500lbs is 1133kgs. Mine weighed in at 1120kgs with 2/3rds tank of fuel on a brand new calibrated weighbridge. As with yourself I've lost a lot surplus weight but gained some back with cage and IC.

What I'd like to determine is that the 1180kg as quoted by Porsche is dry or wet weight and/or inclusive of electric options, sunroof, spare wheel and tools etc or not. In the FSM it also states 1280kgs, is this wet? Is this including options?

Carrera GTS is quoted at 1120kgs with 245bhp. That's my target. Worthy of Club Sport status then I think


I should have added, 2500# was somewhere between 3/4 and 1/2 tank. So I have about 13kg / 30# to go to hit the 1120kg number. Hmmm...might be time to look into a fiberglass replica of the 931 hood!

In any event, I hadn't thought about the comparison to GTS weight...makes me feel a lot better about where the car currently sits. And yes, getting to that ~250bhp number would be great...the 10:1 weight to power ratio!

As for worthiness, I don't think there's any question or debate about your car in that regard
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Carrera RSR  



Joined: 08 Jan 2010
Posts: 1983
Location: Somerset, UK

PostPosted: Wed Jun 05, 2013 6:53 am    Post subject: Reply with quote

I've lost all interior tar sound insulation except for the rear deck. Removed all sound insulation on the bulkhead and front half of transmission tunnel. No spare wheel, jack or tools. Stock seats swapped out, no rear seats, no power windows or mirrors. added weight of roll cage and IC. But no plastic panels or polycarbonate rear hatch! If I switched to poly windows that's another 40kg of weight saving!!
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Now www.924board.org/viewtopic.php?t=34690
Then www.924board.org/viewtopic.php?t=31252
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CÚdric  



Joined: 27 Aug 2004
Posts: 1985
Location: Sweden

PostPosted: Wed Jun 05, 2013 3:47 pm    Post subject: Reply with quote

Last time I went with my car to the scales it showed 1180 without driver (although truck scale, so not that precise). My car is heavy since it has electric windows, mirrors, all insulation left, thick torsion bars, very thick ARBs, heavy D90 street wheels etc. It has a fiberglass racing seat, but with the mounts on its not that much lighter than a std seat. This weight was with a lot of fuel in and a couple of liters of washing fluid.

I┤m more focused on driving fast (and having fun of course)on track though, less focused on bragging on the net about my new CF mirrors Wouldn't mind 100kg of, but don't want the compromises or costs There is so MANY other parameters to drive fast around the track.

Great work with the CS, hope it will see some track soon !!!
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GeorgeV  



Joined: 14 Mar 2010
Posts: 304
Location: Brisbane, Australia

PostPosted: Wed Jun 05, 2013 11:01 pm    Post subject: Reply with quote

ideola wrote:
GeorgeV wrote:
What have you done to the rear window, it looks different from normal?

Lexan hatch in 931 hatch frame.

Dan, do you know how much weight you save with a Lexan hatch? And do you think it's practical on a car driven often on the road?
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ideola  



Joined: 01 Oct 2004
Posts: 15505
Location: Woodstock IL

PostPosted: Thu Jun 06, 2013 12:25 am    Post subject: Reply with quote

George, for a street driven / daily driver car, I'm not sure I would do the hatch. The weight savings is somewhere around 40#, although that is an estimate (~60# for stock vs. ~20# for Lexan).

There are a several issues to consider with the Lexan hatch.

First is sealing. The hatch is not heavy enough to properly seal all the way around, so you may end up with air gaps that let exhaust or rain/road spray into the hatch area.

Second is visibility. The Lexan scratches easily, which affects visibility, and it also creates more glare in certain lighting conditions, so rearward visibility can be problematic at times. Not so much of an issue on the track, but driving around town could become a bother.

Third is usability. I do not have hatch struts on mine for fear of twisting the frame off of the Lexan (it doesn't secure very firmly), so every time I open the hatch, I have to make sure I have something nearby with which to prop it open.

Fourth is noise. It lets in a LOT more road noise thru the back.

So all that said, if it were my only car and one I planned to drive all the time on the road, particularly in inclement weather, I probably would not bother.
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Last edited by ideola on Tue Jun 11, 2013 1:39 pm; edited 1 time in total
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ideola  



Joined: 01 Oct 2004
Posts: 15505
Location: Woodstock IL

PostPosted: Thu Jun 06, 2013 1:02 am    Post subject: Reply with quote

Carrera RSR wrote:
I've lost...

Here's my list:
  • No spare wheel, jack or tools
  • Replaced stock seats with lightweight single piece Sparcos
  • Rear seat delete
  • Carpet delete from the rear seat back
  • Headliner and trim delete, including rear quarter liners and sunroof liner
  • Car already had manual window regulators
  • Power mirror delete, with driver-side-only light-weight 1978 manual mirror
  • Lexan hatch
  • Fixed headlight conversion
  • 7Jx16 Club Sport rims (8.2kg/18# each). Car came with 6Jx15 spiderwebs, but couldn't retain those due to the Brembo calipers...plus I wanted the wider track and the forged rims. So definitely up a little on weight here as compared to Fuchs...
  • Alu suspension components (arguable if any weight savings here...)
  • Car had no A/C to start with
  • Radio delete, including head unit, all speakers, and antenna
  • Lightweight Odyssey battery
  • Gear reduction starter
  • Euro bumpers (car came that way, but definitely a weight savings compared to US-spec cars)


There may be more, but that's all I can think of at the moment.

Added some weight with the charge cooler setup, plus the bolt-in roll bar (not a full cage), and the AFR and boost gauges. I did not remove any sound deadening material other than the large heavy mat in the hatch area.
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GeorgeV  



Joined: 14 Mar 2010
Posts: 304
Location: Brisbane, Australia

PostPosted: Thu Jun 06, 2013 7:11 pm    Post subject: Reply with quote

ideola wrote:
George, for a street driven / daily driver car, I'm not sure I would do the hatch.......
So all that said, if it were my only car and one I planned to drive all the time on the road, particularly in inclement weather, I probably would not bother.

Thanks Dan.
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ideola  



Joined: 01 Oct 2004
Posts: 15505
Location: Woodstock IL

PostPosted: Sun Dec 13, 2015 1:49 am    Post subject: Reply with quote

Finally got around to installing the Alcantara-covered dash (by Classic 9 Leathershop), brand new Momo steering wheel, and Claude's excellent center-speaker dual gauge pod:






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CÚdric  



Joined: 27 Aug 2004
Posts: 1985
Location: Sweden

PostPosted: Sun Dec 13, 2015 3:17 am    Post subject: Reply with quote

Seems to be some nice quality on the work with the dash, alcantara is a really nice material! , now its just some track time that lacks to complete the club sport badge
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morghen  



Joined: 21 Jan 2005
Posts: 8177
Location: Romania

PostPosted: Sun Dec 13, 2015 6:47 am    Post subject: Reply with quote

Dash looks lovely !
You need to take better pics of this interior.
Also, you need some lightweight mats
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BTRacing  



Joined: 31 May 2014
Posts: 171
Location: Nortbrook,IL

PostPosted: Mon Dec 14, 2015 3:52 am    Post subject: Reply with quote

This car is awesome,I had a pleasure of driving it few weeks ago. It is a blast
to drive. For sure on the top of the list from 924 that I drove so far
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Rasta Monsta  



Joined: 12 Jul 2006
Posts: 11378
Location: PacNW

PostPosted: Mon Dec 14, 2015 5:02 am    Post subject: Reply with quote

What is the nearest track day opportunity to your house, Dan?


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tomcooper  



Joined: 17 Feb 2004
Posts: 301
Location: Waterloo, Nebraska

PostPosted: Tue Dec 15, 2015 12:24 am    Post subject: Reply with quote

It may not be close, but there is a Great Plains Region DE at Raceway Park of the Midlands, RPM, near Glenwood, IA on April 30th and May 1st, 2016. RPM is under new management and many improvements were made for 2015 and more to come in 2016. A foundation for a new classroom/administration building was poured last Friday. Improvements are planned for the paddock in early 2016.

Tom Cooper
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Grenadiers  



Joined: 20 Feb 2007
Posts: 3222
Location: Nelson, WI & Prescott, AZ

PostPosted: Tue Dec 15, 2015 12:53 am    Post subject: Reply with quote

[quote="Rasta Monsta"]What is the nearest track day opportunity to your house, Dan?

http://www.blackhawkfarms.com/

Or, Road America. I'd be in for either this summer~!
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