Weighted my Legnum today

[adaxo]

And I'm not happy with what I seen, 1780 kg with about 50 ltr of petrol and 15 ltr of LPG and me in it so that's 85. I always thought it should be around 1500-1600 max for an auto, so what to do now to shave some of it and still have MOT legal car?

Any thoughts?

[Pugme]

Interior out?
Swap the front seats for carbon buckets
Glass out, poly carb in

I'd of said most of our weight is in engine and running gear, maybe go for more power haha

[Confused]

I thought they were ~1600kg (dry) - so once you've added in fluids, yourself, and the weight of the LPG system etc, that's probably just about right.

[Davezj]

1550kg is the dry weight no fluids as with any cars quoted weight.

apporx weight below.

you have to add
engine oil 5L 5kg
gear box oil 3L manual 10L auto 3kg 10kg
coolant 7-8L 7kg
transfer case oil 0.6L 0.6kg
rear diff 0il 0.6L atf and 0.6L Gear oil 1.2kg
3L atf in pump, 3kg
50L petrol (60L is 45kg)
Screen washer fluid 10L 10kg
LPG 15L 15kg
LPG Tank about 30kg
other LPG stuff 5kg
amps about say 20kg
person 85kg
tools 20kg

total = 241kg

dry weight 1550 + 241 = 1791kg

[adaxo]

Davezj LPG is about 0.5kg per ltr, there's only one amp and its no more than 1.5kg no bass box and no any tools apart from jack and rope (just in case I need to tow someone:-))
so according to your calc minus my correction is 192.5, 1550 +192 = 1742, me think this A3 recaros weight A LOT, anyway I still thinking hard how to get rid as much as I can off it as, I dont know as you guys, but I feel difference in between driving alone and with one (average) passenger, so If I could rip off 80kg (somehow) it will be an animal.

[Davezj]

i did say approx weight
all oil are light than water as they float on top of water, water is 1kg per 1L.

you can get some light wheels, and seats, remove all sound deadening, etc.

[adaxo]

i did say approx weight
all oil are light than water as they float on top of water, water is 1kg per 1L.

you can get some light wheels, and seats, remove all sound deadening, etc.

What would be your estimate fairly easy to get rid off?

[menno3x8g]

Lose weight -> take a bike!

[mattnz]

Also petrol is about 0.7kg/L, that's why it floats on water :)

[c0xxy]

could remove all your aircon gubbins, fair bit in that.
why are you keeping the petrol system if running lpg?
ash

[fassi1]

Rear seats out Adam and all the rubbish lying on the top of lpg tank. I did that when I did my last track day and it definitely felt lighter.

[Davezj]

for starters you can run with the petrol light always. that would be 40KG saving.
light weight seats about 10kg a seat saving.
carpets and sound deadening, must be 5kg saving there.
you already have light weight bonnet, but light weight wings would help.
light weight wheels, you can get some really light ones, but probably not in the design you want or the size. smaller wheels and tyres down to 13" and much smaller tyres so the speedo would be need recalibrating. the car would look silly but it would accelerate faster and but top speed would be less.

it all depends how far ou want to go. you could start chopping metal out if you really want to lighten things up.

[Nick Mann]

I weighed a pre facelift auto type s leather interior legnum many years ago. With half a tank of fuel, a few tools and no one in it it weighed 1660kg.
I'm not sure that weight saving is a good way forwards to be honest. Less comfy seats? Louder interior? Worse stereo? Not for me, ta. I've not heard of many ways to save weight without compromising something else.

[Davezj]

you can lighten a VR4 but as you say nick it is not really the same experience if strip it out and loose all the comfort.

personally i would not take anything out of the VR4, it is not meant to be a light weight racer, i like my comfort to much.
if you want a pocket rocket then get a glanza turbo put a cage in it for safety (which adds a lot of weight). but then strip it compleatly. then do a td04 conversion and have a 200hp in a car that weighs about 700kg or less.
but there is nothing worng with doing some sensibe things. like running with almost no petrol in a LPG power car. you still need the petrol system in an lpg converted car due to the way the lpg system piggy backs on top of the petrol system using all the sensors on the petrol system and the ecu map to do the basic control.
the petrol tank is quite light when empty, as it is relativeil thin plastic. so you would not save much if you could remove it.