GTR under 900kg?
Discussion
)?all the GTR's that I know have been weighed on corner weight scales were 1100kgs ish full of fluids... all were SBC cars although one was alloy block (and heaviest).
With an all alloy LS and some lighter wheels I recon under 1000kgs is easy to acheive... but another 100 would mean different engine and or box
If you fit an audi engine you could acheive it IMO as the box, clutch and engine all save quite a bot of weight.... worth noting that the Ultima 18inch wheels were massivelly heavier than the 17inch ones I had on my canam originally so potential to save here.
With an all alloy LS and some lighter wheels I recon under 1000kgs is easy to acheive... but another 100 would mean different engine and or box
If you fit an audi engine you could acheive it IMO as the box, clutch and engine all save quite a bot of weight.... worth noting that the Ultima 18inch wheels were massivelly heavier than the 17inch ones I had on my canam originally so potential to save here.
I am sure if you looked at every item you could get the weight down to 900kgs. You would also need to persuade the factory to build you a lightweight body. Delete a fuel tank, alloy radiator, 17" light weight wheels, stack dash, no aircon or heater, no dry sump or accusump, smaller capacity engine.
But what's the point. I know added lightness is good but if you wanted a light track car buy a Radical. As a road car with 500+hp an all up weight of a bit over 1000kgs is very light and staggeringly quick.
Paul
But what's the point. I know added lightness is good but if you wanted a light track car buy a Radical. As a road car with 500+hp an all up weight of a bit over 1000kgs is very light and staggeringly quick.
Paul
their website is updated the last time in 2007 so I do not know if they still work...but at the time the advertised with about 850kg.
they did change a lot though, I saw that car once on a show, but do not have that much real experience in Ultima's by building it or so.
but I think stuf what you see here is complte different
more on the website.
they did change a lot though, I saw that car once on a show, but do not have that much real experience in Ultima's by building it or so.
but I think stuf what you see here is complte different
more on the website.
Gulf LS3 said:
960kg with full tanks with a LS3 and G50 at a recent IVA test. A fairly standard factory spec car. My ProCharged LSx GTR was 1095Kg
I dont think 900Kg is possible with any V8
If that's the Nottingham SVA Scales (Mainly used for testing 10 ton truck axle weights), I wouldn't trust it very much. The limits on that scale wasn't designed for a light wieght car....I dont think 900Kg is possible with any V8
My GTR was 1070 with some tools, a over night bag and 40 Litres of fuel measured at a Goodwood Track day with those nice corner wieght scales.... Old SBC BTY Ally heads G50/20
Gulf LS3 said:
960kg with full tanks with a LS3 and G50 at a recent IVA test. A fairly standard factory spec car. My ProCharged LSx GTR was 1095Kg
I dont think 900Kg is possible with any V8
Last time I paid a visit to Javier, he reckoned that his car should be very close to 900kg mark, but I guess that not many of us can afford a magnesium gearbox...I dont think 900Kg is possible with any V8
papaulaborgne said:
Last time I paid a visit to Javier, he reckoned that his car should be very close to 900kg mark, but I guess that not many of us can afford a magnesium gearbox...
Having a Magnesium Transmission casing saves some weigth but the internals are the same steel and are the most of the weigth A magnesium transmission will be I guess 10 - 20 Kg lighter at mostGulf LS3 said:
I dont think 900Kg is possible with any V8
just a matter of how much you want to hit the target.... single fuel tank (save 40kgs) , audi engine (saves 30kgs), audi box (saves 30kgs as no adapter either), lighter wheels (saves 20+kgs)ta-da, car that is 900kgs wet... but will it be better than your LS3 car thats 100-150kgs heavier but 200bhp more powerful?
not sure if the audi engine is actually lighter than a ls7 which is only 178 kg.
My canam with sound deadening,satnav/radio and double panelling, heavy batteriy (yellowtop)
glass screen was 950kg empty fuel tanks. 900kg is no problem if you go for ceramic discs
and a lighter battery (LI ON) and an alloy radiator. That should be good for 50kg.
My canam with sound deadening,satnav/radio and double panelling, heavy batteriy (yellowtop)
glass screen was 950kg empty fuel tanks. 900kg is no problem if you go for ceramic discs
and a lighter battery (LI ON) and an alloy radiator. That should be good for 50kg.
spatz said:
not sure if the audi engine is actually lighter than a ls7 which is only 178 kg.
My canam with sound deadening,satnav/radio and double panelling, heavy batteriy (yellowtop)
glass screen was 950kg empty fuel tanks. 900kg is no problem if you go for ceramic discs
and a lighter battery (LI ON) and an alloy radiator. That should be good for 50kg.
I read that ceramic discs or rather the combined disc and caliper weight were actually heavier than metal.My canam with sound deadening,satnav/radio and double panelling, heavy batteriy (yellowtop)
glass screen was 950kg empty fuel tanks. 900kg is no problem if you go for ceramic discs
and a lighter battery (LI ON) and an alloy radiator. That should be good for 50kg.
Certainly what Mclaren claims for the MP4 12C.
F.C. said:
I read that ceramic discs or rather the combined disc and caliper weight were actually heavier than metal.
Certainly what Mclaren claims for the MP4 12C.
Yeh I read that to, but don't believe that ....but then again anything the Clarksons involved in could easily be bCertainly what Mclaren claims for the MP4 12C.
ks as it was in a copy of Top Gear Mag...F.C. said:
I read that ceramic discs or rather the combined disc and caliper weight were actually heavier than metal.
Certainly what Mclaren claims for the MP4 12C.
Personally I've been handed a Mercedes SL (I think?) REAR steel brake disk and was then handed what was definitely a Mercedes SLR FRONT brake disk. The larger SLR FRONT disk was significantly lighter than the smaller SL REAR disk.Certainly what Mclaren claims for the MP4 12C.
I've always wondered what planet they were on suggesting otherwise but obviously there must be something we are missing, right?
The calipers can be used on either ceramic or steel disks can't they? You don't need specific calipers for ceramic disks do you? So the difference can't be there...
Maybe it's in the 'hats'?
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