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Minty_Fresh

Member

Registered: 1st May 08
Location: westmidlands
User status: Offline

8th Oct 10 at 16:01

im trying to loose some weight out of my mx5..

1080kg with 130bhp as standard.

not sure how to put this but was wondering how much bhp you gain (in theory) to every kg you loose?

im going to try and get it under a tonne and up the power by 10bhp (decat/filter etc)

Robin

Premium Member

Registered: 7th Jan 04
Location: Northants Drives: Clio 182 Cup
User status: Offline

8th Oct 10 at 16:13

Current bhp/ton is 120

You need to lose 5kg to 'gain' your first bhp, after that, it's slightly less kg to find another bhp.

Get it set up on a rolling road, it will have lost a few of the bhp over the years and someone who knows what they're doing will find some of that back, which will work better than an exhaust and filter.

You're aiming for 140bhp/ton, 2 ways to do that, either need to get 151bhp or get the weight down to 930kg

Or meet in the middle like you say

Kano

Member

Registered: 29th Aug 04
Location: Fife
User status: Offline

8th Oct 10 at 16:18

[Edited on 08-10-2010 by Kano]

Minty_Fresh

Member

Registered: 1st May 08
Location: westmidlands
User status: Offline

8th Oct 10 at 16:29

cheers robin, i know what you mean, not sure whats on them to 'setup' though but i know it benefited from a full service (picks up a lot better now)

not sure what to remove off it, dont want to go all out track look inside, want to keep some comfort but loose what i can..

spare wheel, jack and carbon canister have gone, also i dont have AC or electric windows (so that saves me a little)

Steve

Premium Member

Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
User status: Offline

8th Oct 10 at 16:40

you dont gain any bhp in theory or reality

Ian

Site Administrator

Registered: 28th Aug 99
Location: Liverpool
User status: Online

8th Oct 10 at 16:47

Depends on many things, if you want to keep it looking fairly standard you could still find some weight in the sound-proofing and not notice that if you put the trim back in around it.

Depending on budget you could swap stuff for lighter parts, ie. seats/panels.

Problem is, you won't get much unless you don't mind noticing.

antnee

Member

Registered: 30th Dec 07
Location: Cov Drives: Clio 197
User status: Offline

8th Oct 10 at 16:48

Wheels, how heavy are standard items?

sc0ott

Member

Registered: 16th Feb 09
User status: Offline

8th Oct 10 at 17:10

Also what is your BMI?

3CorsaMeal

Member

Registered: 11th Apr 02
User status: Offline

8th Oct 10 at 17:12

screenwash weighs a kilo per litre, so ditch half of that

Alex_Rally

Member

Registered: 6th Sep 09
Location: Tyne and Wear, gateshead
User status: Offline

8th Oct 10 at 19:06

if your a fat lad go on diet as well

wear shorts and flip flops instead of shoes and long trousers everylittle helps

chris_uk

Premium Member

Registered: 8th Jul 03
User status: Offline

8th Oct 10 at 19:07

change your seats, im swapping mine for some lighter ones and i save 12kg from just them.

depends how far you want to go really.

Ben G

Member

Registered: 12th Jan 07
Location: Essex
User status: Offline

8th Oct 10 at 19:16

quote:
Originally posted by 3CorsaMeal
screenwash weighs a kilo per litre, so ditch half of that

i swear i used to notice a difference when i had low screenwash in my focus

the fucker took about 7 litres to fill up

Kieran

Premium Member

Registered: 12th Sep 08
Location: Kent
User status: Offline

8th Oct 10 at 19:38

quote:
Originally posted by chris_uk
change your seats, im swapping mine for some lighter ones and i save 12kg from just them.

depends how far you want to go really.

I changed my seats. From standard sport seats to some lightweight omp ones. Il felt a Lil bit quicker. Just like striping out the interior. May be a illusion tho lol

chris_uk

Premium Member

Registered: 8th Jul 03
User status: Offline

8th Oct 10 at 19:59

i thinkive shed nearly 60kg from my car now.

JaffaTB

Member

Registered: 7th Oct 09
Location: Sheffield, South Yorkshire
User status: Offline

8th Oct 10 at 23:43

i would remove my passenger seat and rear seats if i didnt have a girlfriend and baby to carry about

Gareth F

Member

Registered: 16th Jan 08
Location: Location Location
User status: Offline

9th Oct 10 at 07:45

quote:
Originally posted by JaffaTB
i would remove my passenger seat and rear seats if i didnt have a girlfriend and baby to carry about

Buy her a cheap fiesta then do it

gez bay

Member

Registered: 14th Feb 08
Location: South Wales drives: Vxr
User status: Offline

9th Oct 10 at 10:13

ive saved quite a few kg's in my 172
ive taken the sound deadner out and removed the A/C, spare wheel, jack box, wiper and motor (put a grommet in the window) and a decat back straight through exhaust system, so ive lost the weight of the middle boxes and the twin cats.

i'd say ive saved around 40kg maybe 45kg with all of the above.

I could go as far as putting the cup pack cloth interior in aswel but i still want comfort, ive just lost all the weight which no one will notice looking at the car.

Im probably just under a tonne, 995kg's or something. which im happy with considering ive got 185'ish bhp

[Edited on 09-10-2010 by gez bay]

Gareth F

Member

Registered: 16th Jan 08
Location: Location Location
User status: Offline

9th Oct 10 at 10:19

I own a 1780kg Golf so theres no point me trying to skim a few k's off it

gez bay

Member

Registered: 14th Feb 08
Location: South Wales drives: Vxr
User status: Offline

9th Oct 10 at 10:37

how much

Firestate88

Member

Registered: 10th Jul 08
Location: Northampton England
User status: Offline

9th Oct 10 at 11:34

thats a heavy golf, my Astra only weighs 1170kg as standard

Gareth F

Member

Registered: 16th Jan 08
Location: Location Location
User status: Offline

9th Oct 10 at 11:47

1661kg for a normal 1.6 golf and mine is 1815kg for a 130 deisel according to autotrader

Then with me in it it goes up to 1910kg

Firestate88

Member

Registered: 10th Jul 08
Location: Northampton England
User status: Offline

9th Oct 10 at 12:40

blimey thats 2 tons with 2 adults in

mike56gte

Member

Registered: 23rd Jun 09
Location: Fife, scotland Drives: Audi S3
User status: Offline

9th Oct 10 at 12:45

they surely cant weight that much i know they are heavy but that alot.

Eck

Premium Member

Registered: 17th Apr 06
Location: Lundin Links, Fife
User status: Offline

9th Oct 10 at 12:46

Bolt on a turbo.

Corsa_Sport21

Member

Registered: 13th Apr 08
Location: Leven, Fife. Drives : 205 GTi
User status: Offline

9th Oct 10 at 12:48

I dont for 1 minute believe thats what a MK4 Golf weighs.Maybe full with passengers and a boot full yes,but the "kerb" weight,no chance.

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