How much weight in the interior

How much weight in the interior - Printable Version

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How much weight in the interior - Torbjorn968 - 04-05-2009

Many things happening with my yellow baby. Flash will be pleased that she is now 25 mm higher of the ground for example :-). More about that later in another thread. She is also getting a new cylinder head and RS barn cams together with a piggy back "unichip" remap.

Appart from the 968 I have a 944 with 968 engine which is completely stripped out at 1050 kgs empty. My yellow car is something like 1225 kgs with an alloy cage, grp bonnet, plastic rear window. With an approved steel cage I might at 1230?. We have not been on the track yet but the 944 certainly seems a very different animals.

I share both cars with a friend so the idea with more power in the yellow is to keep up with the lighter 944 for some friendly battle possibilities but I think I may feel the urge to strip her out as well. Right now sound insulation forward is standard 968 with a slight strip of the doors (no storage compartment and a ribbon to pull it shut). The sound insulation at the rear is also stripped out replaced by a thin felt mat. So the question is: how much left is there in the interior? If not a lot it might be nice to keep some comfort in the car and start shaving elsewhere:

RS Barn exhaust = - 18 kgs (40 lb)
Remove popups = -
Oddysey battery = - 9 kgs (20 lb)
Fidanza Flywheel = - 10 kgs?
Balance shafts = -7 kgs (oil pickup to be modified)
Plastic forward fenders = -7 kgs (not very weight efficient)
Plastic doors if steel cage

Any one has done a list?

//TL

How much weight in the interior - flash - 04-05-2009

lol - it's not something that makes me happy as much as i think it will make you happy - done with he other things i mentioned, you'll actually be faster

i wouldn't remove the balance shafts - yes there is something like 5 hp available from that, but the resultant and sometimes catastrophic damage i've read about from those who did it was not worth it - you would have to completely tear down the engine, remove the other masses that cause the vibrations, and recalculate the harmonics and rebalance

as for weight loss: the fenders may not lose as much as you think, but it is a couple of pounds each over the wheels which is good

i presume you already yanked out the seats and put something lighter in there

airbags are good for a few pounds each

move the battery to the rear too, and you'll gain back some balance

the glue under the carpet weighs quite a bit

the wood plank on top of the DME is good for a couple of pounds

the big one will be getting rid of the remaining glass and replacing it with lexan

How much weight in the interior - Torbjorn968 - 04-05-2009

So not a lot of weight in the forward sound insulation? The wood plank you mention is at the feet of the passenger if I remember correctly?

No airbags and club sport seats. 944 has carbon seats which saves some weight there.

//T

How much weight in the interior - flash - 04-05-2009

it's amazing how heavy seats are - my recaro sportline seats are almost 30lbs each after factoring in the rails and such (it would have been more had i have used the recaro rails) a good race seat is nearly half that - the factory seats are 55lbs or more (depending on options) - the hard back fixed club sport seats aren't too bad at almost 40lbs total including rails

yes, quite a bit to lose forward on a standard car - a TON of work though - you can read horror stories about the glue removal - not sure about what is under the carpet on a club sport

i was pretty stunned at the weight of the passenger airbag - quite a heavy little bugger

How much weight in the interior - benspeeder - 04-06-2009

I am going to leave the carpet in the race car from the edge of the rear seat forward. After I pulled the rear seats and saw how much nasty glue - I said forget it. Plus the car must weigh 3055 so the rug is ballast in the right place. How's that for rationalizing away a nasty job???

How much weight in the interior - flash - 04-06-2009

roflmao - works for me - made a similar decision myself

How much weight in the interior - Torbjorn968 - 05-03-2009

QUOTE (flash @ Apr 6 2009, 03:46 PM) <{POST_SNAPBACK}>roflmao - works for me - made a similar decision myself

According to friends who tried forward carpets is a bit over 40 pounds so they get to stay for a bit.

//T

How much weight in the interior - flash - 05-03-2009

to estimate, the rear piece in the boot of a cab weighs 11lbs - based on square footage, i would say the front carpets are about 22-24 lbs - but then there is the dreaded glue...................

lol - the hidden added bonus to consider is that YOU will probably lose as much weight as the car does in the process of removing the glue

How much weight in the interior - Torbjorn968 - 05-03-2009

QUOTE (flash @ May 3 2009, 10:12 PM) <{POST_SNAPBACK}>to estimate, the rear piece in the boot of a cab weighs 11lbs - based on square footage, i would say the front carpets are about 22-24 lbs - but then there is the dreaded glue...................

lol - the hidden added bonus to consider is that YOU will probably lose as much weight as the car does in the process of removing the glue

I hear the trick is to freeze the glue with carbon....whateveritiscalledinenglish... ice. Then knock it away.

//T

How much weight in the interior - wjk_glynn - 05-04-2009

I can't speak to the accuracy, but 'Dan' over on Rennlist put a spreadsheet together listing the effictiveness of different options:
- http://members.rennlist.org/dan10101/944%2...%20savings4.xls

Karl.

How much weight in the interior - rxter - 05-05-2009

QUOTE (Torbjorn968 @ May 3 2009, 02:21 PM) <{POST_SNAPBACK}>I hear the trick is to freeze the glue with carbon....whateveritiscalledinenglish... ice. Then knock it away.

//T

CO2 - carbon dioxide. I like that option. Just use a CO2 fire extinguisher, a cold chisel, and a hammer. Oh and don't forget the case of beer and the sound proof garage for the expletives. I'd love to hear if it actually worked before taking it on though.

How much weight in the interior - wjk_glynn - 05-06-2009

Someone on RL is removing the undercarpet glue: http://forums.rennlist.com/rennforums/924-...lmost-done.html

Karl.

How much weight in the interior - rxter - 05-06-2009

hmm.... fire extinguisher or xylene? Tough choice. Maybe I'll use both since I tend to smoke while working on the car...

It's good to see that there are some options other than what xrad when through using raw power.