Specs of 928 CS
10-25-2007, 11:50 AM
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Specs of 928 CS
Does anyone know the specs of the 928 CS.
I understand it didn't have a passenger wing mirror or rear blinds or AC.
What else was removed?
Thanks.
I understand it didn't have a passenger wing mirror or rear blinds or AC.
What else was removed?
Thanks.
10-25-2007, 11:59 AM
#2
lighter alternator, lighter a/c compressor, usually cloth interior, not sunroof, no rear air, sport seats, CS rims, I think some even had manual windows but I haven't seen one..
I'm sure there's more..
Later,
Tom
89GT
82 Trackster
I'm sure there's more..
Later,
Tom
89GT
82 Trackster
10-25-2007, 12:58 PM
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I didn't really make the original request clear.
I'm really after the differences between the SE and the CS. I have a SE and want to see what I can remove to make it more like a CS.
I've been competing in a 800kg hatchback and the 928 feels incredibly heavy and I want to start replacing heavy bits with light bits (while remaining within the rules).
The SE is basically a CS with bits added, which I think I can remove again.
I'm really after the differences between the SE and the CS. I have a SE and want to see what I can remove to make it more like a CS.
I've been competing in a 800kg hatchback and the 928 feels incredibly heavy and I want to start replacing heavy bits with light bits (while remaining within the rules).
The SE is basically a CS with bits added, which I think I can remove again.
10-25-2007, 06:01 PM
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Samuel's site seems to be under work for some reason. http://mapage.noos.fr/928cs/
All 19 CS production cars did have AC and I think its same unit as was used in SE. Basically difference between CS and SE was no sound proofing in CS. Also if CS was ordered without sunroof wiring loom was lighter. This doesn't sound like much difference but complete S4 wiring is very heavy. Deleting 1/3 or 1/2 of wires will alone remove maybe 15-20 kg.
All 19 CS production cars did have AC and I think its same unit as was used in SE. Basically difference between CS and SE was no sound proofing in CS. Also if CS was ordered without sunroof wiring loom was lighter. This doesn't sound like much difference but complete S4 wiring is very heavy. Deleting 1/3 or 1/2 of wires will alone remove maybe 15-20 kg.
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10-25-2007, 06:29 PM
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Some CS have sunroof while others don't have it. Those that do not have also have lighter wiring loom, or at least '88 MY have. Not sure about '89 MY as those have RDK which could mean they have heavy wiring regardless of roof configuration. I think SE always has heavy loom even though at least most of them do not have sunroof.
As Jon mentions, underbody protection is real difference between CS and other models. Its removal has been feature in virtually all different Porsche CS models. It is very heavy too compared to what one thinks and probably makes largest difference to CS vs SE weight difference.
All CS except factory proto had two outside mirrors. But as sunroof differences demonstrate not even all CS have near equal weight.
Some '80-82 MY ROW 4.5L did not have real blinds either. This was more cost cutting measure than weight issue. They also had lighter manual seats from 911 and did not have storage box between rear seats. These bare basic models were meant to broaden client base so that 928 could take up from 911 like planned. Sort of last effort from Porsche before they realised its not going to happen no matter what they do. Such no options at all 4.5L without sunroof and with lighter engine than 32V can actually be fairly close in weight to at least CS which has sunroof. These at obviously much slower as they have only 240 hp though.
As Jon mentions, underbody protection is real difference between CS and other models. Its removal has been feature in virtually all different Porsche CS models. It is very heavy too compared to what one thinks and probably makes largest difference to CS vs SE weight difference.
All CS except factory proto had two outside mirrors. But as sunroof differences demonstrate not even all CS have near equal weight.
Some '80-82 MY ROW 4.5L did not have real blinds either. This was more cost cutting measure than weight issue. They also had lighter manual seats from 911 and did not have storage box between rear seats. These bare basic models were meant to broaden client base so that 928 could take up from 911 like planned. Sort of last effort from Porsche before they realised its not going to happen no matter what they do. Such no options at all 4.5L without sunroof and with lighter engine than 32V can actually be fairly close in weight to at least CS which has sunroof. These at obviously much slower as they have only 240 hp though.
10-25-2007, 06:39 PM
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928 CSs are no different from other 928s in that somebody ordering new could specify what options they wanted, including sun roof.
The CSs were supposed to come with the lighter manual seats but I believe Samuel's has the full electric seats; also an ordered optional extra.
Seems strange to me that somebody would buy a CS and order options that made it heavier however "no accounting for folks".
Marton
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Some CS have sunroof while others don't have it.
The CSs were supposed to come with the lighter manual seats but I believe Samuel's has the full electric seats; also an ordered optional extra.
Seems strange to me that somebody would buy a CS and order options that made it heavier however "no accounting for folks".
Marton
10-25-2007, 07:13 PM
#11
I thought I read somewhere that CS models became a precursor to the GT, with all the same mods on a stripped down car. If this is true, then a GT is a loaded CS. That would mean different cam timing from the S4, lower gearing than the US spec, special springs, shocks etc.
10-26-2007, 12:02 AM
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I thought I read somewhere that CS models became a precursor to the GT, with all the same mods on a stripped down car. If this is true, then a GT is a loaded CS. That would mean different cam timing from the S4, lower gearing than the US spec, special springs, shocks etc.
10-26-2007, 04:40 AM
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Cams are exact same as GT and LH box very likely too. Front springs are different but they are only slightly stiffer than normal sport springs. Gearbox is same as in '89 GT. Average CS isn't that special compared to no options as light as possible '89 GT. Its just their rarity which has mystified them and made them stuff of legends. This doesn't mean I would not want to have one, or all 19.
10-26-2007, 06:55 AM
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Some CS have sunroof while others don't have it. Those that do not have also have lighter wiring loom, or at least '88 MY have. Not sure about '89 MY as those have RDK which could mean they have heavy wiring regardless of roof configuration. I think SE always has heavy loom even though at least most of them do not have sunroof.
As Jon mentions, underbody protection is real difference between CS and other models. Its removal has been feature in virtually all different Porsche CS models. It is very heavy too compared to what one thinks and probably makes largest difference to CS vs SE weight difference.
All CS except factory proto had two outside mirrors. But as sunroof differences demonstrate not even all CS have near equal weight.
Some '80-82 MY ROW 4.5L did not have real blinds either. This was more cost cutting measure than weight issue. They also had lighter manual seats from 911 and did not have storage box between rear seats. These bare basic models were meant to broaden client base so that 928 could take up from 911 like planned. Sort of last effort from Porsche before they realised its not going to happen no matter what they do. Such no options at all 4.5L without sunroof and with lighter engine than 32V can actually be fairly close in weight to at least CS which has sunroof. These at obviously much slower as they have only 240 hp though.
As Jon mentions, underbody protection is real difference between CS and other models. Its removal has been feature in virtually all different Porsche CS models. It is very heavy too compared to what one thinks and probably makes largest difference to CS vs SE weight difference.
All CS except factory proto had two outside mirrors. But as sunroof differences demonstrate not even all CS have near equal weight.
Some '80-82 MY ROW 4.5L did not have real blinds either. This was more cost cutting measure than weight issue. They also had lighter manual seats from 911 and did not have storage box between rear seats. These bare basic models were meant to broaden client base so that 928 could take up from 911 like planned. Sort of last effort from Porsche before they realised its not going to happen no matter what they do. Such no options at all 4.5L without sunroof and with lighter engine than 32V can actually be fairly close in weight to at least CS which has sunroof. These at obviously much slower as they have only 240 hp though.
-no Sunroof
-no cruise
-no rear ac or storage
-no rear sun flaps
-no interior lights in the doors
-cloth/vinyl interior
- manual "911" seats (weigh "nothing" compared to a powered leather 928 seat)
there may be more, this was all I could think of now.
It weighs 1400kg/3100lbs ready to go, had it on the scales to verify.