CelicaDan94 Posted March 21, 2019 Report Share Posted March 21, 2019 Hey all. So 2 weekends ago I removed about 10kg - 20kg of weight from my boot. I was get about 200-230 miles to a tank. Now I have emptyed my boot I have got 250 miles and still a quarter of a tank left. I knew that reducing weight improves mpg (and speed ) but I never knew it was to that extent. I think next up is remove the back seats and strip the sound system out and I may see 300 miles to a tank. Sent from my PRA-LX1 using Tapatalk Link to comment Share on other sites More sharing options...
CelicaTom92 Posted March 21, 2019 Report Share Posted March 21, 2019 Unfortunately the back seats really don't weigh much and they actually block out a lot of sound, so my advise would be to keep them in if the car is only used on the road. If you wanted to go into weight saving mode without making the car too loud/ uncomfortable I would: Remove the secondary air system and all pipework (5-7kg) Remove the A/C and all associated pipework (I'm aware this can sacrifice comfort in some respects.. but it weighs a good 5-7kg). Replace the battery with a light weight one (OEM battery is around 15-17kg, the light ones are around 8KG or a little less) The numbers above might not be particularly accurate, thats just what I guess they weighed when I took them out the car. That's the easiest way of removing a good amount of weight without stripping the car down IMO. 1 Link to comment Share on other sites More sharing options...
CelicaDan94 Posted March 21, 2019 Author Report Share Posted March 21, 2019 Sound doesn't bother me, it bothers my gf but not me lol. But I shall look into all that you have suggested and buy a new shed just for car parts, I already have half a shed full lol.Sent from my PRA-LX1 using Tapatalk Link to comment Share on other sites More sharing options...
Wolfie Posted March 21, 2019 Report Share Posted March 21, 2019 Yeah stripping weight makes a big difference. The first thing I done on the Red edition was to throw away that stupid subwoofer in the back. Didn’t do a thing and weighed a ton 1 Link to comment Share on other sites More sharing options...
Crazy Cat Lady Posted March 21, 2019 Report Share Posted March 21, 2019 It's a shame we need to cart around a spare wheel - that really does weigh heavy. A lightweight get-me-home spare wheel maybe all we need (?) The last time i punctured and had to put the spare on was 1988 Link to comment Share on other sites More sharing options...
Wolfie Posted March 21, 2019 Report Share Posted March 21, 2019 1 minute ago, Crazy Cat Lady said: It's a shame we need to cart around a spare wheel - that really does weigh heavy. A lightweight get-me-home spare wheel maybe all we need (?) The last time i punctured and had to put the spare on was 1988 Same here, I can’t remember when I’ve ever needed to put a spare wheel on. I bet I’ll need it if I didn’t have it though Link to comment Share on other sites More sharing options...
CelicaDan94 Posted March 21, 2019 Author Report Share Posted March 21, 2019 I don't have a spare tyre, I have the foam stuff that you put into the tyre. It's a load of crap but it should get me to somewhere that sells tyres. Sent from my PRA-LX1 using Tapatalk Link to comment Share on other sites More sharing options...
Sherv Posted March 22, 2019 Report Share Posted March 22, 2019 Ive worked out a while ago that the extra performance i could squeeze out of my car is directly related to the weight of the driver.Sad but true 1 Link to comment Share on other sites More sharing options...
trophytr5 Posted March 22, 2019 Report Share Posted March 22, 2019 Filling the tank and then driving to see how far you are going? You are carrying around 55 litres of fuel which would weigh something lile 50 kilos Link to comment Share on other sites More sharing options...
CelicaDan94 Posted March 22, 2019 Author Report Share Posted March 22, 2019 Shame you can't run it on heliumSent from my PRA-LX1 using Tapatalk Link to comment Share on other sites More sharing options...
Sheeple Posted March 22, 2019 Report Share Posted March 22, 2019 (edited) 3 hours ago, trophytr5 said: Filling the tank and then driving to see how far you are going? You are carrying around 55 litres of fuel which would weigh something lile 50 kilos 55L of fuel weighs 41.1895kg. Petrol is around 748.9g/L, different octane changes the weight slightly, some race fuel we used was 747g/L Edited March 22, 2019 by Sheeple Link to comment Share on other sites More sharing options...
Sheeple Posted March 22, 2019 Report Share Posted March 22, 2019 There are lots of things you can remove to save weight, you have to inspect every single component and asses it's use, design etc. Rotating weight has a great effect on MPG, so light alloys will help for example, these also make the overall weight of the car less so it's win/win. Don't be tempted by light wheel nuts though, these are a daft idea and a safety issue. plastic trims and covers that are just there to tidy the engine bay up can be removed, not things like fuse box covers but the plastic wit the VVTI logo etc. Taking this critical look at each part doesn't save much weight per part, but the numbers build if you keep going and look at everything. It can get out of hand, the ultimate would be to strip the entire chassis and only put back what's needed, including trimming out spare wires in the loom, removing stuck on floor tar etc. But less drastic savings can add up. I intend to do this for my gt4 as it's very nose heavy but I'm not really looking to strip it out at all. My MR2 has had the full drastic treatment and saved huge amounts of weight. Link to comment Share on other sites More sharing options...
99GT Posted March 22, 2019 Report Share Posted March 22, 2019 I've always been tempted to remove the spare wheel as that is really heavy being full size. All the punctures I've had I've managed to inflate enough to get me home. Though if I remove it I'll probably rip out a sidewall the next day. Lol Link to comment Share on other sites More sharing options...
Sheeple Posted March 22, 2019 Report Share Posted March 22, 2019 Plastic rear quarter windows and rear hatch window can save some good weight.. plastic4performance.com lighter battery can help and isn't as expensive, something like this https://www.braillebattery.co.uk/index.php/braille/product_batteries/b129 at around 150 quid Link to comment Share on other sites More sharing options...
slybunda Posted March 22, 2019 Report Share Posted March 22, 2019 Rear hatch weighs a lot. When i replaced the hatch struts i was really surprised to see how heavy it was to lift. Link to comment Share on other sites More sharing options...
paulgtt Posted March 22, 2019 Report Share Posted March 22, 2019 It’s not just mpg that improves with weight reduction, acceleration, braking, cornering, tyre wear all improve lugging less weight around. But don’t forget you will alter the balance of the car if you remove all the weight from just the rear. Probably the best thing to make lighter without turning it into a track car is lighter wheels as already mentioned. Link to comment Share on other sites More sharing options...
Sheeple Posted March 22, 2019 Report Share Posted March 22, 2019 If you want to change the seats, bucket seats are around half the weight of the stock seats, at least 14kg to be had here. Not a cheap option. Could dump the misses and take the passenger seat out, good 14kg+ saving there Floor mats? get them heavy fuel eaters out! Cone filter instead of airbox, 2.5kg Cut sugar from your diet and walk an extra 20mins a day, might be some weight saved there. But then you could be a 0% fat road cyclist for all I know. Only wear race boots when driving, every kg helps so leave the doc martins at home. Run with the screen wash only half filled. Have to top up more quickly but it's another 2kg saved. Add all the ideas in this thread together and there is loads to be saved Just added them up.. 97.5kg of savings! about the weight of a larger passenger. SAS 7 AC 7 battery 10 spare 18 wheels 8kg half tank 20kg plastic trim 2kg plastic windows 3 seats 14 mats 3 boots 1 washer 2 airbox 2.5 1 Link to comment Share on other sites More sharing options...
CelicaDan94 Posted March 23, 2019 Author Report Share Posted March 23, 2019 [emoji38]By dumping the gf I will also be saving money not just weight [emoji848] [emoji38] Sent from my PRA-LX1 using Tapatalk 2 Link to comment Share on other sites More sharing options...
paulgtt Posted March 23, 2019 Report Share Posted March 23, 2019 To give an idea of what can be lost/changed, this is what Iv done: Aircon Power steering ABS Half sized rad Engine mounts Stainless exhaust and manifolds Induction setup Flyby wire throttle conversion Light weight alloys Coilovers Carbon bonnet Carbon spoiler Seats and belts - swapped for buckets and harnesses Interior plastics Speakers and stereo Spare wheel and tool kit Sound proofing floors and behind dash Sunvisors Headliner Rear wiper 3rd brake light Electric sunroof - swapped to ali plate Electric mirrors - swapped to manual Excess wiring Removable steering wheel Admittedly mine is a weekend/track car, there is still more to lose like the glass windows, doors, tailgate etc I might go the ITB route yet so can lose the inlet mani, induction setup aswell. Just depends how far you want to go, the more you lose the less comfortable it gets! Link to comment Share on other sites More sharing options...
trophytr5 Posted March 23, 2019 Report Share Posted March 23, 2019 9 hours ago, CelicaDan94 said: By dumping the gf I will also be saving money not just weight Sent from my PRA-LX1 using Tapatalk And you'll be adding quietness! 1 1 Link to comment Share on other sites More sharing options...
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