Weight Saving

Place for discussions about the RX-8
RenesisRaceBuggy
Former Member
Former Member
Posts: 1190
Joined: Sun Mar 11, 2012 11:58 pm
Colour: Custom
Has thanked: 30 times
Been thanked: 92 times

Re: Weight Saving

Post by RenesisRaceBuggy »

13Black wrote:Can an adult please supervise me when the dry ice arrives pls :bounce:
There's plenty of adults on here, but I don't see any grown-ups, sorry. :lol:
User avatar
mrspiller
Club Member
Club Member
Posts: 4245
Joined: Wed Dec 02, 2015 7:04 pm
RX-8: 231
Colour: Copper Red
Location: Hengoed - South Wales
Has thanked: 113 times
Been thanked: 158 times

Re: Weight Saving

Post by mrspiller »

Dry ice ordered and delivered on Thursday


Sent from my iPhone using Tapatalk
User avatar
mrspiller
Club Member
Club Member
Posts: 4245
Joined: Wed Dec 02, 2015 7:04 pm
RX-8: 231
Colour: Copper Red
Location: Hengoed - South Wales
Has thanked: 113 times
Been thanked: 158 times

Re: Weight Saving

Post by mrspiller »

Phil Bate wrote:If anyone fancies filming a short clip of the freezing and cracking and getting a few pics it would make a nice little DIY guide.
Here you go Phil , have quite Imagehttps://vimeo.com/199206894Imagehttps://vimeo.com/199207050a few more If you fancy doing a diy guide


Sent from my iPhone using Tapatalk
User avatar
zippyonline
Former Member
Former Member
Posts: 1307
Joined: Mon May 05, 2014 11:16 am
RX-8: Evolve
Colour: Copper Red
Location: Essex/Suffolk
Has thanked: 30 times
Been thanked: 27 times

Re: Weight Saving

Post by zippyonline »

Elektix wrote: These opening figures are from the yanks to get us going. I have converted them to KG.
..................
Stock Exhaust Manifold (with O2 Sensor) - 8kg
So, I happen to have a stock exhaust manifold kicking about. No O2 sensor or anything, it's coming up as 6.6kg.
P1020031.JPG

And a Toyo manifold is coming up as 4.86kg.
P1020028.JPG
:salut:
You do not have the required permissions to view the files attached to this post.
These users thanked the author zippyonline for the post:
PeteH (Sat Jan 28, 2017 10:11 pm)
Copper Red Evolve - viewtopic.php?f=104&t=71400
User avatar
mrspiller
Club Member
Club Member
Posts: 4245
Joined: Wed Dec 02, 2015 7:04 pm
RX-8: 231
Colour: Copper Red
Location: Hengoed - South Wales
Has thanked: 113 times
Been thanked: 158 times

Re: Weight Saving

Post by mrspiller »

Is the toyo manifold a good fit ?



Sent from my iPhone using Tapatalk
User avatar
zippyonline
Former Member
Former Member
Posts: 1307
Joined: Mon May 05, 2014 11:16 am
RX-8: Evolve
Colour: Copper Red
Location: Essex/Suffolk
Has thanked: 30 times
Been thanked: 27 times

Re: Weight Saving

Post by zippyonline »

mrspiller wrote:Is the toyo manifold a good fit ?
No - I need to get it machined so the flange is flat :lol:

I guess that'll make it lighter though :-k
Copper Red Evolve - viewtopic.php?f=104&t=71400
User avatar
warpc0il
Spin Doctor
Spin Doctor
Posts: 32532
Joined: Sat Sep 06, 2008 10:56 pm
RX-8: 231
Colour: Lightning Yellow
Location: Groomsport, Co Down, NI
Has thanked: 444 times
Been thanked: 2080 times

Re: Weight Saving

Post by warpc0il »

unless they have to build it up with weld first...
Dave
The Spin Doctor ™
uǝǝɹɔs ɹnoʎ ʇɹǝʌuı ǝsɐǝld :ɹoɹɹǝ
User avatar
zippyonline
Former Member
Former Member
Posts: 1307
Joined: Mon May 05, 2014 11:16 am
RX-8: Evolve
Colour: Copper Red
Location: Essex/Suffolk
Has thanked: 30 times
Been thanked: 27 times

Re: Weight Saving

Post by zippyonline »

warpc0il wrote:unless they have to build it up with weld first...
It's not that warped :lol:
Copper Red Evolve - viewtopic.php?f=104&t=71400
User avatar
mrspiller
Club Member
Club Member
Posts: 4245
Joined: Wed Dec 02, 2015 7:04 pm
RX-8: 231
Colour: Copper Red
Location: Hengoed - South Wales
Has thanked: 113 times
Been thanked: 158 times

Re: Weight Saving

Post by mrspiller »

zippyonline wrote:
mrspiller wrote:Is the toyo manifold a good fit ?
No - I need to get it machined so the flange is flat :lol:

I guess that'll make it lighter though :-k
ImageImageImageImageImage


Sent from my iPhone using Tapatalk
User avatar
Scartlead
Former Member
Former Member
Posts: 1676
Joined: Fri Jan 10, 2014 9:43 pm
RX-8: 231
Location: N.Ireland
Has thanked: 53 times
Been thanked: 76 times

Re: Weight Saving

Post by Scartlead »

Holy thread revival!! Quick q, On a standard daily 231, how much weight needs to be lost, before the ever reliable butt Dyno notices a difference?
Aka Mark

My Build viewtopic.php?f=204&t=70916
User avatar
wiggles
Former Member
Former Member
Posts: 1391
Joined: Sun Jun 11, 2017 1:25 pm
RX-8: 231
Colour: Galaxy Grey
Location: Newport
Has thanked: 33 times
Been thanked: 38 times

Re: Weight Saving

Post by wiggles »

Not a lot for a butt Dyno...

I can feel the difference between when I've just driven out of the petrol station with a full tank after arriving with an empty one but I imagine the point at which it makes an actual different is probably greater
Project thread Galaxy grey 231 - Street Port, Tein coilovers, decat, D585's, Cobra Catback whatever 9j wheels aren't broken at the moment and a massive wing
User avatar
ChrisHolmes
Club Member
Club Member
Posts: 28281
Joined: Sun Jan 29, 2006 10:04 pm
Location: Cheltenham
Has thanked: 2567 times
Been thanked: 940 times

Re: Weight Saving

Post by ChrisHolmes »

My what a sensitive butt you must have!
Rotary History;

Sep 2005-Aug 2006 EO55 XOL VR 231 New
Oct 2014-Mar 2019 OE06 EWJ VR 231
Jan 2019-Jun 2020 T200 CAD Orange SC 231
Feb 2020-May 2023 RR54 AJR VR 231 Modified for Track
Oct 2020-Mar 2021 YA56 EUE Copper Red Nemesis
Jun 2022-Apr 2023 TN07 JHD KURO Resurrected
Jun 2023-Jan2024 OV09 BFF Sparkling Black R3
Avatar courtesy of my grandson Cameron
User avatar
Scartlead
Former Member
Former Member
Posts: 1676
Joined: Fri Jan 10, 2014 9:43 pm
RX-8: 231
Location: N.Ireland
Has thanked: 53 times
Been thanked: 76 times

Re: Weight Saving

Post by Scartlead »

That is sensitive lol....it’s more out of curiosity as to what needs to come off or be replaced to make it worth doing. My own 8 is not a tracker, so like to keep the car looking like a 8 usually does.
Aka Mark

My Build viewtopic.php?f=204&t=70916
User avatar
wiggles
Former Member
Former Member
Posts: 1391
Joined: Sun Jun 11, 2017 1:25 pm
RX-8: 231
Colour: Galaxy Grey
Location: Newport
Has thanked: 33 times
Been thanked: 38 times

Re: Weight Saving

Post by wiggles »

Has to be really empty 😂

But a car full of passengers Vs with none only feels a bit different and that could be 200kg difference but then again you don't do that at track speeds
Last edited by wiggles on Mon Mar 05, 2018 8:14 pm, edited 1 time in total.
Project thread Galaxy grey 231 - Street Port, Tein coilovers, decat, D585's, Cobra Catback whatever 9j wheels aren't broken at the moment and a massive wing
User avatar
mrspiller
Club Member
Club Member
Posts: 4245
Joined: Wed Dec 02, 2015 7:04 pm
RX-8: 231
Colour: Copper Red
Location: Hengoed - South Wales
Has thanked: 113 times
Been thanked: 158 times

Re: Weight Saving

Post by mrspiller »

Wow , I’d never have thought a weight adjustment would make much difference on a dyno , I do however stand to be mcorrected .....Not sure what a butt dyno is but I’m all ears ....


Sent from my iPhone using Tapatalk
User avatar
Scartlead
Former Member
Former Member
Posts: 1676
Joined: Fri Jan 10, 2014 9:43 pm
RX-8: 231
Location: N.Ireland
Has thanked: 53 times
Been thanked: 76 times

Re: Weight Saving

Post by Scartlead »

mrspiller wrote:
Mon Mar 05, 2018 8:10 pm
Wow , I’d never have thought a weight adjustment would make much difference on a dyno , I do however stand to be mcorrected .....Not sure what a butt dyno is but I’m all ears ....


Sent from my iPhone using Tapatalk
On a proper dyno then no, but your backside when driving, aka butt dyno, do you feel an acceleration or handling difference , with moderately less weight, discounting extra passengers or fuel levels.
Aka Mark

My Build viewtopic.php?f=204&t=70916
User avatar
mrspiller
Club Member
Club Member
Posts: 4245
Joined: Wed Dec 02, 2015 7:04 pm
RX-8: 231
Colour: Copper Red
Location: Hengoed - South Wales
Has thanked: 113 times
Been thanked: 158 times

Re: Weight Saving

Post by mrspiller »

mrspiller wrote:Wow , I’d never have thought a weight adjustment would make much difference on a dyno , I do however stand to be corrected .....Not sure what a butt dyno is but I’m all ears ....


Sent from my iPhone using Tapatalk


Sent from my iPhone using Tapatalk
User avatar
mrspiller
Club Member
Club Member
Posts: 4245
Joined: Wed Dec 02, 2015 7:04 pm
RX-8: 231
Colour: Copper Red
Location: Hengoed - South Wales
Has thanked: 113 times
Been thanked: 158 times

Re: Weight Saving

Post by mrspiller »

Scartlead wrote:
mrspiller wrote:
Mon Mar 05, 2018 8:10 pm
Wow , I’d never have thought a weight adjustment would make much difference on a dyno , I do however stand to be mcorrected .....Not sure what a butt dyno is but I’m all ears ....


Sent from my iPhone using Tapatalk
On a proper dyno then no, but your backside when driving, aka butt dyno, do you feel an acceleration or handling difference , with moderately less weight, discounting extra passengers or fuel levels.
Understood ...... my car felt quicker after I had stripped the interior and put coilovers on it , lap times didn’t say the same ........ must have been the increased noise


Sent from my iPhone using Tapatalk
User avatar
Scartlead
Former Member
Former Member
Posts: 1676
Joined: Fri Jan 10, 2014 9:43 pm
RX-8: 231
Location: N.Ireland
Has thanked: 53 times
Been thanked: 76 times

Re: Weight Saving

Post by Scartlead »

Thanks, yeah its only a generalised query, as there are so many variables of course and a lot of the mods I've bought will be lighter than stock, exhaust etc anyway .......So there will be some weight benefit, its a question of how much more you do to make it worthwhile or not :-k
Aka Mark

My Build viewtopic.php?f=204&t=70916
User avatar
wiggles
Former Member
Former Member
Posts: 1391
Joined: Sun Jun 11, 2017 1:25 pm
RX-8: 231
Colour: Galaxy Grey
Location: Newport
Has thanked: 33 times
Been thanked: 38 times

Re: Weight Saving

Post by wiggles »

I could probably lose a few kg of crap out of the boot I carry around for no reason...

Not to mention the kgs I could lose myself 😬
Project thread Galaxy grey 231 - Street Port, Tein coilovers, decat, D585's, Cobra Catback whatever 9j wheels aren't broken at the moment and a massive wing
Project-RX8
Former Member
Former Member
Posts: 123
Joined: Wed Mar 14, 2018 1:53 pm
RX-8: 231
Colour: Custom
Location: Norfolk
Has thanked: 0
Been thanked: 1 time

Re: Weight Saving

Post by Project-RX8 »

I've removed inner skin of bonnet.

Anyone considered cutting the inside of the doors out while retaining impact bars?

Same for other body panels?

I'm in the process of removing wiring :shock:
Project-RX8
Former Member
Former Member
Posts: 123
Joined: Wed Mar 14, 2018 1:53 pm
RX-8: 231
Colour: Custom
Location: Norfolk
Has thanked: 0
Been thanked: 1 time

Re: Weight Saving

Post by Project-RX8 »

Is there a holy grail weight saving thread?

Some teasers...
C9152794-8720-46A8-AEFE-7F544F9AA0AD.jpeg
29ED8AB1-03A9-40FE-8F8C-380F1E28071A.jpeg
BDC4A4D0-B97C-4827-808F-BB4EED3BF96D.jpeg
AD520C06-9463-49C1-AC68-2ECB1D9B6CCF.jpeg
B8674466-2B80-46C8-91F6-D2FEA15AF75C.jpeg
B8D68215-BFE1-4E6B-9031-777478698627.jpeg
You do not have the required permissions to view the files attached to this post.
Project-RX8
Former Member
Former Member
Posts: 123
Joined: Wed Mar 14, 2018 1:53 pm
RX-8: 231
Colour: Custom
Location: Norfolk
Has thanked: 0
Been thanked: 1 time

Re: Weight Saving

Post by Project-RX8 »

65A3A11D-8E14-4E82-9B61-0A0437C9E18E.jpeg
You do not have the required permissions to view the files attached to this post.
Project-RX8
Former Member
Former Member
Posts: 123
Joined: Wed Mar 14, 2018 1:53 pm
RX-8: 231
Colour: Custom
Location: Norfolk
Has thanked: 0
Been thanked: 1 time

Re: Weight Saving

Post by Project-RX8 »

2F508FF9-8AE8-4405-B60C-2EFE32270F0D.jpeg
51E9CE18-5ADA-48B4-9EEB-930E4DF40AC2.jpeg
829F296E-42BA-4C56-9E37-55626602D01F.jpeg
You do not have the required permissions to view the files attached to this post.
Project-RX8
Former Member
Former Member
Posts: 123
Joined: Wed Mar 14, 2018 1:53 pm
RX-8: 231
Colour: Custom
Location: Norfolk
Has thanked: 0
Been thanked: 1 time

Re: Weight Saving

Post by Project-RX8 »

How far do you go?