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Master Thread - Weight Savings Tips

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Old 06-02-2007 | 01:17 AM
  #121  
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Yes, that rear wing is the "S5" or "GTR" rear wing and we do sell it on our website.

It is here: http://www.928motorsports.com/parts/wings.php

Click on the pictures to enlarge them.
Old 06-02-2007 | 01:29 AM
  #122  
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Originally Posted by cdbtx
Dean Krenz's blue car weighed in at the last SCCA tech inspection under 2700lbs (WITH DRIVER)... I'm going over it with a fine tooth comb to try and figure out where he removed all the weight...
Doesn't that car have a fiberglass hatch? Whatever happened to the mold for that!?
Old 06-04-2007 | 03:56 PM
  #123  
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I can still get the Fibreglass hatch - here it is:

http://www.928motorsports.com/parts/sporthatch.php

Olivier Jaquemond makes them for us - but they are quite expensive owing to the fact that they have two finished sides (both the interior and exterior are finished) and then they are "welded" together. The tempered glass window is supplied and installed, also.

I do not use this on my race car because my rules state that the exterior body panels must all be from the Manufacturer and that the car must retain the appearance of the original model. They let fender flares slide, but thats about all.
Old 06-04-2007 | 04:11 PM
  #124  
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I think the blue car hatch is all fiberglass, including the frame.

I like the mid-engined look, like the Jacmond, but I would like the rear window to be directly behind the fronts seats, IE. back seats deleted.
Old 06-08-2007 | 05:54 PM
  #125  
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Idea on interior tar insulation removal: Get a bunch of dry ice. Scatter it around the floor and tub. Once it really freezes the floor, bang the floor with a hammer. The insulation will shatter and you can pick up the pieces. This is from my nephew who worked for At-Speed when they fielded the Volvo S60R in Speed World Challenge.
Old 06-08-2007 | 06:12 PM
  #126  
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Originally Posted by dbryant61
Idea on interior tar insulation removal: Get a bunch of dry ice. Scatter it around the floor and tub. Once it really freezes the floor, bang the floor with a hammer. The insulation will shatter and you can pick up the pieces. This is from my nephew who worked for At-Speed when they fielded the Volvo S60R in Speed World Challenge.
That does indeed work, I never would have believed it but I also heard it from a pro level team. When it's well covered with the ice the stuff goes flying as you use a scraper. It's the funnest part of a build! ironically, the areas that dry ice can't be used are the worst part of a build.
Old 07-06-2007 | 03:19 PM
  #127  
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Where do you put the required front and rear tow hooks once the bumpers are removed?
Old 07-06-2007 | 06:45 PM
  #128  
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The rear tow hooks are better on the bottom attached to the lower strut cross bolt.

The front tow hook isn't a problem - its not in the bumper. Still, you can save 2+ pounds by using a tow strap rather than a tow hook.
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Old 07-06-2007 | 08:09 PM
  #129  
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Originally Posted by Mike Simard
That does indeed work, I never would have believed it but I also heard it from a pro level team. When it's well covered with the ice the stuff goes flying as you use a scraper. It's the funnest part of a build! ironically, the areas that dry ice can't be used are the worst part of a build.
Another way for the older Tar stuff on the 928 was leaving it out in the sun. And a Map torch. And a scraper. Most of it comes off pretty well.
Old 07-06-2007 | 09:25 PM
  #130  
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Originally Posted by Carl Fausett
The rear tow hooks are better on the bottom attached to the lower strut cross bolt.

The front tow hook isn't a problem - its not in the bumper. Still, you can save 2+ pounds by using a tow strap rather than a tow hook.

Thanks for posting the pictures, Carl.

A couple of questions:

Do those tow methods meet the requirement of PCA and SCCA rules?

And do you think pulling the car from the lower strut bolt has an effect on the suspension? Alignment settings..or?

Every time I have towed a 928 I have put it on the trailer rear end first, so I am really wondering if pulling the car up on a trailer with that rear tow hook attached to the lower strut would hurt or effect anything.
Old 07-09-2007 | 12:43 AM
  #131  
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Abby - it doesn't seem to hurt a thing, not only myself but many of us racers have been using it for years. I closely measure and know what my rear suspension settings are and they have never changed as a result of the tow hook located there. Also, this is a favorite spot to tie-down the rear of the car when flat hauling on a trailer. Does less harm than the bumper-mounted hook, which should not be used to lash a 928 down, should only be used for a straight pull.
Old 09-04-2007 | 10:08 PM
  #132  
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Weight of smog pump delete? Maybe Roger has one to weigh????
Old 09-04-2007 | 10:09 PM
  #133  
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Originally Posted by BrendanC
I will need to get you those pics and weights of my swiss cheese bumper!
Brendan, did you have the chance to do the swiss cheese? Thanks.
Old 09-04-2007 | 10:15 PM
  #134  
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Originally Posted by James-man
Brendan, did you have the chance to do the swiss cheese? Thanks.
I did do the swiss cheese, but then stopped before I was satisfied and put the bumper on to test the Euro bumper pipes, which are a 1/3rd of the weight of the USA ones. No shock, but it holds up the bumper. Saving weight off the very front of the car was what I was shooting for. I did not have a chance to weigh, but if I do, I will post back here.
Old 11-03-2007 | 06:49 PM
  #135  
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Default Vibration damper and battery

Couple of q's on this thread:

1. Has anyone run a 928 without the engine vibration damper or with a lighter one?
2. I think it was Mark K that mentioned a battery weighing 14lbs - please can someone post the full details?

cheers
Adrian


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