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Weight Reduction
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bigjimbo  



Joined: 03 May 2005
Posts: 77
Location: Chino,CA

PostPosted: Mon Dec 12, 2005 7:10 am    Post subject: Weight Reduction Reply with quote

Have any of you guys have done an weight reduction on your 924 lately?
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morghen  



Joined: 21 Jan 2005
Posts: 8126
Location: Romania

PostPosted: Mon Dec 12, 2005 8:45 am    Post subject: Reply with quote

yes...remove the rear seats(upper)...everything in the trunk...carpets...

thats what i've done until now

this is what i am going to do from now on

A front fiberglass spoiler and hood...rear hatch lexan...and thats about everything you can remove and replace and the car will still look and feel the same..by now its -50 Kg maby more and thats equal to 5 HP
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Robert Hooper  



Joined: 15 Mar 2004
Posts: 70
Location: Christchurch NZ

PostPosted: Mon Dec 12, 2005 8:58 am    Post subject: Reply with quote

My car has been stripped bare,

all sound deadening and brackets not needed removed

cut out the spare wheel cavity

i am looking at replacing the front screen and all windows with lexan,

purchased fiberglass bonnet and bumpers

replaced wheels with 944 turbo lighter versions

removed brake booster (as it was too heavy) and am putting in a pedal box with front rear adjustment,

get rid of mechanical injection, looking at running quad throttles with efi,

thinking about getting rid of huge alternator and replacing with lighter jap version,

cutting doors out so just skin is left, thinging about replacing skin with fiberglass

removed lights and jsut have covers

basically i have gone really stupid in making my car as light as possible
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1982 924 Race Car
1981 931 Road Car
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john h  



Joined: 06 Nov 2002
Posts: 827
Location: Wellington New Zealand

PostPosted: Mon Dec 12, 2005 11:00 am    Post subject: Reply with quote

Robert Hooper wrote:
My car has been stripped bare,


cutting doors out so just skin is left, thinging about replacing skin with fiberglass



Just remember if you want to race the car you will need to have the side intrusion bars in the roll cage. Under Motorsport NZ rules as soon as you dick with the doors - even just removing the windo winders you need side intrusion bars.

Who did you buy the fibreglass bumper and bonnet from? I know I used to supply most of thes items in NZ so would be intereted to know who the competition is in supplying these.

Years ago I got a place called Ultra light (based in Ardmore) to make me a rear screen. They used to make helicopter canopies and the back window was pretty good (99% of the people didn't realise it was a palstic version) - except I stuffed it two years ago when I smacked my car.
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if you take it to pieces slowly it can provide anguish all year long!
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Vince Ponz  



Joined: 03 Nov 2002
Posts: 3581
Location: Florida

PostPosted: Mon Dec 12, 2005 11:31 am    Post subject: Reply with quote

Stripped with me in it 2400. I am 176. Pounds not age but close. With a roll cage and stock seats. Track days just a race seat so subtract 30 lbs and I don't know the weight of the cage.
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Last edited by Vince Ponz on Fri Dec 16, 2005 7:32 am; edited 1 time in total
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Robert Hooper  



Joined: 15 Mar 2004
Posts: 70
Location: Christchurch NZ

PostPosted: Mon Dec 12, 2005 11:35 am    Post subject: Reply with quote

John,

car has side bars, i want to add more to the cage, as the car feels like a little tin death box,

paul at autobahn is supplying the fiberglass parts,

with the windows, am i correct that only the front window MUST be lexen, but rest can be plastic ???

Cheers

Rob
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Andrew NZ  



Joined: 22 Jun 2004
Posts: 744
Location: New Zealand

PostPosted: Mon Dec 12, 2005 2:21 pm    Post subject: Reply with quote

Robert Hooper wrote:
John,

paul at autobahn is supplying the fiberglass parts,

with the windows, am i correct that only the front window MUST be lexen, but rest can be plastic ???


I got my fibreglass from Paul too - great guy to deal with!!

I was told you only need the MR10 for the side if you need an Authotity card, which I guess you don't!
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Andrew
1977 RX924 rally car
12a bridgeport
www.race4-dcup.co.nz
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Andrew NZ  



Joined: 22 Jun 2004
Posts: 744
Location: New Zealand

PostPosted: Mon Dec 12, 2005 2:24 pm    Post subject: Reply with quote

Come to think of it Robert, I've got some plastic side windows here that aren't MR10 if you want them.
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Andrew
1977 RX924 rally car
12a bridgeport
www.race4-dcup.co.nz
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CBass  



Joined: 03 Nov 2002
Posts: 2807
Location: Vancouver, Canada

PostPosted: Mon Dec 12, 2005 10:13 pm    Post subject: Reply with quote

2350 with a full tank of gas, all steel, no fiberglass or lexan.

HVAC unit? We don't need no stinkin HVAC!

Air conditioning? This is a Porsche, not a Benz.

Bumper shocks? I'm not convinced these are going to soak up any more impact than aluminum brackets with accordion style brakes, and they weight about 15lbs more each. They only stuck them on there to comply with the DOT regulations.

Interior is generally pretty light, door panels, carpets, headliner and dash etc can all stay... They make the car more liveable. Sound deadener, rear seats, no excuse for that.

Good place to get rid of weight are the front seats. A good pair of aftermakret buckets will weigh about 30lbs less than the original seats, and provide much more support.

Convert to alloy trailing arms, coilovers and ditch the torsion bars. Big gains to be had here, especially since it's unsprung weight.
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simsport  



Joined: 06 Nov 2002
Posts: 573
Location: UK Warrington

PostPosted: Tue Dec 13, 2005 10:14 am    Post subject: weight Reply with quote

Mine is 2148 with fiberglass hood, plexiglass rear screen etc. The supercharger adds about 25lbs though.

Lots of weight to go at in the sound deadening matts in the floor and over the tank, also chunks of the stuff behind the dash and in the door and rear quater panels.

Cheers
Simon
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john h  



Joined: 06 Nov 2002
Posts: 827
Location: Wellington New Zealand

PostPosted: Tue Dec 13, 2005 11:44 am    Post subject: Reply with quote

Andrew NZ wrote:
Robert Hooper wrote:
John,

paul at autobahn is supplying the fiberglass parts,

with the windows, am i correct that only the front window MUST be lexen, but rest can be plastic ???


I got my fibreglass from Paul too - great guy to deal with!!

I was told you only need the MR10 for the side if you need an Authotity card, which I guess you don't!


I wondered who was buying some of the fibreglass bits I was supplying to Paul. I'm just making some bumpers for Paul so I guess Robert will be the end user of these. I haven't sold him a bonnet (hood for the Americans)for a while - so guess he's made his own mould now. I know he took moulds off the rear flares of my GT (when I smacked teh car and it was sitting around waiting for repair) a couple of years ago - seen the finished articles on a couple cars recently and they looked smart.
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Remember a Porsche is not just for Christmas,

if you take it to pieces slowly it can provide anguish all year long!
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Robert Hooper  



Joined: 15 Mar 2004
Posts: 70
Location: Christchurch NZ

PostPosted: Tue Dec 13, 2005 11:48 am    Post subject: Reply with quote

yes bumpers are for me!!!!!

and i belive he has got his own mold now for the bonnet,

dont stress about getting then done for xmas, i dont need them for a bit,

do you ever race in the south island ????

would love to see your car !!!

Cheers

Rob
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1981 931 Road Car
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john h  



Joined: 06 Nov 2002
Posts: 827
Location: Wellington New Zealand

PostPosted: Tue Dec 13, 2005 2:50 pm    Post subject: Reply with quote

That's good cause I doubt whether I'll have them by Christmas. I haven't raced the Porker in the South for years - in fact I think I only ever raced it once on the mainland.

Where are you based?

I've an old historic racer (Lotus 7 style thing) based in Nelson which I used to use over in the South Island - currently it's in storage till I decide whether to race it again.
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Remember a Porsche is not just for Christmas,

if you take it to pieces slowly it can provide anguish all year long!
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bass gt  



Joined: 02 Dec 2004
Posts: 971
Location: Johannesburg for now!!

PostPosted: Tue Dec 13, 2005 10:58 pm    Post subject: Reply with quote

Steve887 Kgs!! (1951lbs) Fully stripped!!
Circa 230bhp and a 944 alloy rear end going in now. Full fibreglass from the B pillars forward, lexans all round, 2 way JRZ coilovers ordered.
Hmm, what next?/ Ah yes, Jenvey throttle bodies and Emerald EMS!!
I'm beginninning to think this is a vampire car. It never see's the light of day!!!
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bass gt  



Joined: 02 Dec 2004
Posts: 971
Location: Johannesburg for now!!

PostPosted: Tue Dec 13, 2005 10:59 pm    Post subject: Reply with quote

887 Kgs!! (1951lbs) Fully stripped!!
Circa 230bhp and a 944 alloy rear end going in now. Full fibreglass from the B pillars forward, lexans all round, 2 way JRZ coilovers ordered.
Hmm, what next?/ Ah yes, Jenvey throttle bodies and Emerald EMS!!
I'm beginninning to think this is a vampire car. It never see's the light of day!!!

Steve
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