Factory sunroof delete TT - Page 4 - Rennlist - Porsche Discussion Forums

Notices

Factory sunroof delete TT

 
Old 01-26-2013, 02:27 AM
  #46  
PiB993
User
 
PiB993's Avatar
 
Join Date: Jun 2012
Location: San Francisco, CA
Posts: 697
Default

All that weight situated at the highest part of the car . . . .
PiB993 is offline  
Old 01-26-2013, 02:41 AM
  #47  
Mike J
Addict
Lifetime Rennlist
Member
 
Mike J's Avatar
 
Join Date: May 2001
Location: Vancouver, BC
Posts: 8,162
Default

Ok, exactly HOW much weight is it? How much does it actually change the cars moments and handling? I have not seen any numbers, you still need the sheet metal and some internal bracing so it's what? 5-10 lbs?

I am asking because I see statements like this all the time but we really should see if we can find the actual measurable facts and use those to make a conclusion. I see the argument on height gains for helmet clearances for sure, or that people like the aesthetics of a smooth roof...

Cheers,

Mike
Mike J is offline  
Old 01-26-2013, 11:06 AM
  #48  
TB993tt
Addict
Rennlist Member

 
TB993tt's Avatar
 
Join Date: May 2001
Location: UK
Posts: 4,225
Default

Originally Posted by Mike J View Post
Ok, exactly HOW much weight is it? How much does it actually change the cars moments and handling? I have not seen any numbers, you still need the sheet metal and some internal bracing so it's what? 5-10 lbs?

I am asking because I see statements like this all the time but we really should see if we can find the actual measurable facts and use those to make a conclusion. I see the argument on height gains for helmet clearances for sure, or that people like the aesthetics of a smooth roof...

Cheers,

Mike
This is Rennlist, the answers are all on here

https://rennlist.com/forums/993-turb...-progress.html
TB993tt is offline  
Old 01-26-2013, 11:50 AM
  #49  
Nurburger
Addict
Rennlist Member
 
Nurburger's Avatar
 
Join Date: Oct 2007
Location: Racking up air miles....
Posts: 2,964
Default

I'd much rather NOT to have a sunroof on my 993 (or any 911, for that matter).... I've owned my car since May of last year & haven't opened it once. Had I been old enough to order one back in 96/97, I would not have checked the sunroof option box.

I love the clean & smooth contour of a 911 roof - the sunroof completely interrupts that.
Nurburger is offline  
Old 01-26-2013, 12:24 PM
  #50  
marin77
User
 
marin77's Avatar
 
Join Date: May 2005
Location: NYC
Posts: 327
Default

I like my sunroof open for street driving - but again I don't track my car or drive at 200 mph!

I do like the clean look of a sunroof delete car though ...
marin77 is offline  
Old 01-26-2013, 12:53 PM
  #51  
PiB993
User
 
PiB993's Avatar
 
Join Date: Jun 2012
Location: San Francisco, CA
Posts: 697
Default

From the link above that's net roughly 11kilos/24lbs of superfluous weight . . . my goodness. Wait until it might start leaking. The factory delete (not optioned sr) probably saves a little more. It's just the thought not the actual numbers or handling effects. I feel almost as bad about my rear wiper.

It's true though I like the lines without a sunroof and without the twig on the back window - I've got both of them of course.

Almost as nagging as when my check engine light comes on but not quite.
PiB993 is offline  
Old 01-26-2013, 01:48 PM
  #52  
Mike J
Addict
Lifetime Rennlist
Member
 
Mike J's Avatar
 
Join Date: May 2001
Location: Vancouver, BC
Posts: 8,162
Default

Hmm, the comment "apparently" in the thread sounds like its not an actual measurement, it sounds like an opinion that was passed on. How was that measurement actually determined? Was it weighing the roof/frame/motor vs the new roof side by side?

Ok, lets say it's 24 lb. for arguments sake. I suspect that too many changes on that car occurred to absolutely conclude that solid vs. sunroof really made a significant difference in the handling, acceleration or feel of the car, especially when also building in roll protection which would offer more chassis stiffening but also add weight back in, etc.

I think from an acceleration point of view, its a wash, the weight loss if it was just a sunroof delete is less than 0.8% of a stock car. From a rolling/pitching point of view, it may be more significant given a second moment uses the square of the distance from the roll center (I think I remember that correclty). However, I am still not sure if you can actually feel it, especially for road use.

Better get the flame suit on....

Cheers,

Mike
Mike J is offline  
Old 01-26-2013, 02:05 PM
  #53  
chsu74
Addict
Rennlist Member
 
chsu74's Avatar
 
Join Date: Oct 2006
Location: CT
Posts: 7,564
Default

The $$ to get rid of a 24lbs sunroof has to be one of the more expensive weight loss mods around.
chsu74 is offline  
Old 01-26-2013, 02:09 PM
  #54  
mongrelcat
Super User
 
mongrelcat's Avatar
 
Join Date: Mar 2009
Location: Seattle
Posts: 2,394
Default

Originally Posted by Steve Weiner-Rennsport Systems View Post
One loses 52 lbs at the top of the car and picks up 1.5" of headroom,...


mongrelcat is offline  
Old 01-26-2013, 02:13 PM
  #55  
WingChun
Addict
Rennlist Member
 
WingChun's Avatar
 
Join Date: Mar 2011
Location: Derbyshire, UK
Posts: 128
Default

I know for sure the sunroof panel is EXACTLY 5kg.....cos I weighed it.

Add to that the weight of the motor/gearbox unit and all the fixings and it could be 10-12kg maybe?
WingChun is offline  
Old 01-26-2013, 03:54 PM
  #56  
TB993tt
Addict
Rennlist Member

 
TB993tt's Avatar
 
Join Date: May 2001
Location: UK
Posts: 4,225
Default

Originally Posted by Mike J View Post
Hmm, the comment "apparently" in the thread sounds like its not an actual measurement, it sounds like an opinion that was passed on. How was that measurement actually determined? Was it weighing the roof/frame/motor vs the new roof side by side?

Ok, lets say it's 24 lb. for arguments sake. I suspect that too many changes on that car occurred to absolutely conclude that solid vs. sunroof really made a significant difference in the handling, acceleration or feel of the car, especially when also building in roll protection which would offer more chassis stiffening but also add weight back in, etc.
Mike
Hey Mike
I used the word apparently because I am probably even more cynical than you and I didn't personally weigh the stuff coming off when the roof was done (hence apparently) but I remember the guy who did it was/is a professional and very **** and is very credible, he did weigh everything - I wanted to know.

I got my 993 from 1516kg DIN (ie full of fuel) down to 1380kg, taking weight off is all about 10kg here and there (apart from the 4WD system which is a straight 50kg !) so every little bit helps in handling, acceleration etc.
My 993 is in 4WD mode now and weighs about 1440kg and the 60kg lost is very noticeable compared to stock.
weight loss items
carbon hood
carbon doors with minimal (Marcus) interior trim
carbon reinforcing bars behind bumpers
plexiglass rear window
RS side windows
Cobra Misano seats
Sunroof delete
Gutter delete
Rear wiper delete
Headlight washer delete
front spare and carpet delete
BBS E88 wheels
Cat delete
TB993tt is offline  
Old 02-10-2013, 11:43 AM
  #57  
Cajun
User
 
Cajun's Avatar
 
Join Date: Sep 2002
Location: Louisiana
Posts: 763
Default

Originally Posted by Only1Buck View Post
I do have a 97 Signal Yellow Black interior sunroof delete. Original owner was Mike Valentine and it is my understanding that he orders his cars without a sunroof because he is tall (not sure on his height)...

There was also a sunroof delete 97 Arctic Silver with Boxster Red interior that sold last year through Canepa and previously sold through RPM.

I am aware of a Glacier white with Blue Interior that is in Colorado that is sunroof delete also plus the arctic silver one that sold through European Collectibles that was lost to fire as mentioned earlier in this thread... that makes 4 and there was also a Speed Yellow 97 in Ohio that I looked at about 3 years ago...but on that one I was unable to confirm that it was optioned from the factory that way so ... I know of 4 and 1 that has no sunroof the question being was it done afterwards...
I would love to see a picture of your car. I saw one like it (yours???) back in '99 or '00 at a Porsche dealership in OH. I drooled over that car until it sold. Of course back then, I was fresh out of college and heading to grad school so I had no money and could only dream!
Cajun is offline  
Old 02-10-2013, 12:33 PM
  #58  
Only1Buck
Addict
Rennlist Member
 
Join Date: Nov 2002
Location: NJ
Posts: 1,938
Default As requested by Cajun

As requested...
Attached Images      
Only1Buck is offline  
Old 05-18-2016, 10:40 AM
  #59  
JCPerformance
User
 
Join Date: Dec 2009
Posts: 23
Default

Anyone want to sell theirs?
JCPerformance is offline  

Thread Tools
Search this Thread
Quick Reply: Factory sunroof delete TT


Contact Us About Us Advertising Cookie Policy Privacy Statement Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: