Notices
RX-8 Racing Want to discuss autocrossing, road-racing and drag racing the RX-8? Bring it here. This is NOT a kills/street racing forum.

goal--under 3K lbs on the track

Thread Tools
 
Rate Thread
 
Old Aug 30, 2008 | 11:54 AM
  #1  
olddragger's Avatar
Thread Starter
Registered
iTrader: (3)
 
Joined: Apr 2004
Posts: 10,828
Likes: 40
From: macon, georgia
goal--under 3K lbs on the track

current wgt 3150 with 1/2 tank(roadracing no autocross) --i have the damn sunroof, but cloth interior. 6 speed blah bah blah, battery thing i am aware of and a 680 odessy is on standby for track events. wgt was with oem battery.
how can i get to my goal and still have a comfortable daily driver--can it be done?
i also sure like the undertrays on the 2009!
olddragger
Reply
Old Aug 30, 2008 | 12:14 PM
  #2  
racewithroar's Avatar
Registered User
 
Joined: Dec 2006
Posts: 33
Likes: 0
From: Martinsville, VA
150 lbs and still have a comfortable daily driver? That's a tough one. Not sure it's possible.

But here is where I would start:
Lighter wheels and brake rotors.
Lighter seats with lighter mounting brackets. Think about removing the rear seats.
Take all the liners and everything out of the trunk, engine bay, etc.

That's probably all that you'll be able to do without if you still want comfort. If you want to do a little more think about removing the heater core and a/c unit, and everything that goes with them.

That's what I can think of off the top of my head.

--Adam
Reply
Old Aug 30, 2008 | 03:20 PM
  #3  
imput1234's Avatar
I ♥ Drifting!!!
iTrader: (6)
 
Joined: Mar 2007
Posts: 3,069
Likes: 5
From: Lexington, KY
gutting the trunk + lightening the entire exhaust system (single) + battery + wheels might be a 100lb reduction

you can also get FIA approved racing seats that are light.
Reply
Old Aug 30, 2008 | 04:00 PM
  #4  
tunerwannab's Avatar
Registered
iTrader: (1)
 
Joined: Feb 2008
Posts: 831
Likes: 1
From: Puyallup
Wheels, If you could run a single exhaust with no cat that would probably help a lot. I dont know how often you track but maby take out the rear seats when you do? only a couple pounds but empty your washer fluid when you track. every little bit helps.
Reply
Old Aug 30, 2008 | 05:11 PM
  #5  
Spin9k's Avatar
Momentum Keeps Me Going
 
Joined: Sep 2002
Posts: 5,036
Likes: 5
From: Colorado
I was 3147lbs when cornerweighted with Enkei 275/35/18 RT-615s. 1/2 tank and my weight in the drivers seat (150). For track -24lbs for 17" Enkeis with 255 Nitto NT01s, -24lbs remove rear seats, remove jack et al ~15lbs = 3084lbs

other weight mods minus:

Odessy 680
RB 2p frnt rotors
Corksport CATback

other weight mods plus:

Autoexe strut braces
Trunk dynomated
Fire extinquisher

For a GT, there not much else to go if you want the everyday conveniences.

Last edited by Spin9k; Aug 31, 2008 at 06:32 AM.
Reply
Old Aug 30, 2008 | 05:29 PM
  #6  
Brettus's Avatar
Boosted Kiwi
iTrader: (2)
 
Joined: Apr 2006
Posts: 20,838
Likes: 1,794
From: Y-cat-o NZ
Ti exhaust cuts a lot of weight - mine weighs about 13 lbs
Reply
Old Aug 30, 2008 | 05:41 PM
  #7  
MazdaManiac's Avatar
Banned
iTrader: (3)
 
Joined: Oct 2003
Posts: 16,386
Likes: 27
From: Under my car
How come you guys are so heavy?
My car - with me in it and about 1/2 tank of gas is 3200.
I have full leather, a subwoofer, sunroof, car computer and a turbo system with a vertical door conversion and I'm lugging around a water meth system and a full MS kit and 19" blingy rims.
Of course, I only weigh 155, but still...
Reply
Old Aug 30, 2008 | 06:41 PM
  #8  
olddragger's Avatar
Thread Starter
Registered
iTrader: (3)
 
Joined: Apr 2004
Posts: 10,828
Likes: 40
From: macon, georgia
gravity is stronger in Ga
Good idea on the exhaust i had not thought of that part.
maybe the driver can lose 10lbs or so too.
Thanks Roar--i am trying to get lean for when we meet in TT at Road ATlanta--God help me!
olddrAGGER
Reply
Old Aug 30, 2008 | 08:27 PM
  #9  
TeamRX8's Avatar
Registered
iTrader: (25)
 
Joined: Apr 2005
Posts: 26,933
Likes: 2,139
Base 04-05 models are under 2850# with light wheels and exhaust in Stock autox trim. A roll cage will obviously add weight, but under 3000# should be easy . I was in the low 2700# in STU trim.
Reply
Old Aug 30, 2008 | 09:30 PM
  #10  
olddragger's Avatar
Thread Starter
Registered
iTrader: (3)
 
Joined: Apr 2004
Posts: 10,828
Likes: 40
From: macon, georgia
good news--i am going to search that old thread.
OD
Reply
Old Aug 30, 2008 | 11:23 PM
  #11  
pdxhak's Avatar
Official Post Whore
iTrader: (2)
 
Joined: Jan 2003
Posts: 10,462
Likes: 32
From: Portland,OR
FWIW I have a 2004 GT w/spare tire came in 3073 when corner balanced. I believe Nav is the only missing option from my car as well.
Reply
Old Sep 16, 2009 | 04:07 PM
  #12  
jird20's Avatar
Mad for a Furai
 
Joined: Sep 2004
Posts: 117
Likes: 0
From: Madrid - Spain
If you do not care very much about meeting emission regulations during a cold start:

- remove the air pump, valves and tubing.

Sure it will trim about 16 pounds and the engine bay will look cleaner (and it will enable to place additional items in the engine bay (i.e. a little tank for fresh oil injection for the Richard Sohn adaptor).

The only problem with this is that the PCM shuts the engine off during cold starts when the pump is disconnected.

That being being fixed and you get less weight + more free space around the engine.

Regards

jird20
Reply
Old Sep 16, 2009 | 04:16 PM
  #13  
MazdaManiac's Avatar
Banned
iTrader: (3)
 
Joined: Oct 2003
Posts: 16,386
Likes: 27
From: Under my car
Originally Posted by jird20
The only problem with this is that the PCM shuts the engine off during cold starts when the pump is disconnected.
Huh? No it doesn't.
You will get a CEL, but nothing "shuts off" or anything like that.
If you have a PCM reflash, you won't even notice anything different at all (other than the lack of a whine from the air pump on a cold morning).
Reply
Old Sep 16, 2009 | 04:52 PM
  #14  
TeamRX8's Avatar
Registered
iTrader: (25)
 
Joined: Apr 2005
Posts: 26,933
Likes: 2,139
The weight isn't any where near 16lbs either as I recall, maybe 6 lbs just guessing
Reply
Old Sep 16, 2009 | 05:00 PM
  #15  
MazdaManiac's Avatar
Banned
iTrader: (3)
 
Joined: Oct 2003
Posts: 16,386
Likes: 27
From: Under my car
Originally Posted by TeamRX8
The weight isn't any where near 16lbs either as I recall, maybe 6 lbs just guessing
Yeah, sounds about right.
Reply
Old Sep 16, 2009 | 05:04 PM
  #16  
TeamRX8's Avatar
Registered
iTrader: (25)
 
Joined: Apr 2005
Posts: 26,933
Likes: 2,139
otherwise, get your f@t @ss to the gym ...

me too for that matter



.

Last edited by TeamRX8; Sep 16, 2009 at 08:59 PM.
Reply
Old Sep 16, 2009 | 06:01 PM
  #17  
tmak26b's Avatar
Registered User
 
Joined: Oct 2004
Posts: 1,141
Likes: 0
My 06 base is exactly 3000lbs with FULL tank of gas and everything stock. With all the money you will need to lose that 150lbs and things you have to remove, you are better off selling that and buying a base model.........
Reply
Old Sep 16, 2009 | 07:52 PM
  #18  
whoneedspistons's Avatar
Registered
iTrader: (2)
 
Joined: Sep 2006
Posts: 821
Likes: 0
anyone remove the sound deadening material in the cab? i know in other cars there was a significant amount of weight there....
Reply
Old Sep 16, 2009 | 11:55 PM
  #19  
Zelse's Avatar
悪魔のR
iTrader: (12)
 
Joined: Jan 2008
Posts: 1,528
Likes: 0
From: Boston
15-20 pounds in the entire trunk , behind the rear passengers, and right behind the driver and passenger seats. At least it felt like it. :D
Reply



You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -5. The time now is 03:40 PM.