Jump to content
SAU Community

Recommended Posts

  • Replies 72
  • Created
  • Last Reply

Top Posters In This Topic

Top Posters In This Topic

Posted Images

you can't look at a group a car for weight numbers. Fristly they had a pretty basic cage compard to todays standards, and things like most of the suspention being custom milled from alloy, and use of lightweight materails everywhere.

The GMS cars were pretty robust; they were the 1180kg cars. Bolt in caged NME/Jap cars at the 1115kg end. Very little custom milled alloy suspension in the R31s though they did run cast mag front uprights and heavily modified standard arms in the rear and tube front LCAs (can buy plenty of that stuff off the shelf for R32) . When you consider they were also running additional coolers and pumps for the diff, box, turbo, engine oils, full steel panels, an enormous fuel cooled ECU unit, onboard extinguisher, dry sump and pump, big turbo on an enormous steel manifold etc it doesn't seem that unrealistic to me.

And shaving 180kg isn't all that much (assume cage is 60kg), not compared to 265kg.

I think it's doable without going crazy. Remember mine was weighed at Targa at 1275, with all our safety gear (suits helmets etc) and nearly full of fuel. We aren't trying too hard, the car still has everything under the dash, climate motors, heater box etc.

There's plenty of weight that could come out of it if I was to spend some more time doing it.

ahhhh, i read in other places you said it was 1280kg, and i assumed 1280kg curb.

i think keeping the fan and heaterbox is worth it for rallys, when your in the car for ages, and driving with the windows down can make the notes fly around.

haha... r33 whales... good one... glavin!

ive stripped a shitload out of my r32 already... alot which wont be going back in... im up to 60 something kgs with more to weigh yet.

ive got the list at home but off the top of my head:

a/c compressor - 11kgs

a/c bracket - 3kgs

a/c condensor - 5kgs

heater box - 3kgs

a/c evaporator - 3kgs

fan blower - 3kgs

stripping wiring - 13kgs

front seats - 19kg each (replacing with 5kg each race buckets)

rear seat - 7kg

p/s pump bracket - 2kg

s14 p/s pump - 2kg over standard

s14 p/s rack - 3kg over standard

hicas lines, valves, rack - 15kg

rear wing - 10kg

thats over 100kg there.. and ive got alot more to go. thats all i can remember, ill make a list and put it in my build thread. plus most cars these days have an aftermarket exhaust which can weigh 20kgs less than the stocker.. add to that a lighter straight through exhaust and a dump and front pipe. the cast dump weighs a few kg, as does the cast exhaust manifold.

ive still got front guards, bonnet to weigh over gtr items, inner doors to trim, boot lid to replace, power windows to remove, sound deadening and carpet to weigh, more wiring to sift through, reos to trim, alot more weight saving ideas to think about.. plus getting what weight is left more centralised...

but im not looking to comply with race or rally rules, or rego if it comes to it, just a fun track day car.

so i think... if you are looking to comply with rules, and are looking to compete in a form of racing with some degree of comfort... then no, you will struggle to get it to sub 1300kg let alone 1200kg

if you are a retard like i am and think its fun to have a pointless waste of money that is unbearable to drive the 5 times a year you are able to drive it then yes, you may even get it down to 1100kg... as is what im aiming for.

Sub 1300? Explain mine then, 1275, with fuel and crew gear? Mine is completely streetable and (mostly) legal, has Brembos/power windows etc so it's not by any stretch a stripped cop. Mine's a 12/89 model, am I right thinking they're a little lighter to begin with than later ones?

Fark me you guys make things hard...just run more boost!

not all of us can run dirty truck turbo's :ph34r:

Ben: the series 1 doors are 10kg lighter each, i just got some for my car.

Edited by sav man
Sub 1300? Explain mine then, 1275, with fuel and crew gear? Mine is completely streetable and (mostly) legal, has Brembos/power windows etc so it's not by any stretch a stripped cop. Mine's a 12/89 model, am I right thinking they're a little lighter to begin with than later ones?

hahaha i read that... and then didnt even realise what you'd said. my bad. i usually count the "crew" in... as some have 1 crew, some have 2 crew, and sometimes 1 crew can make up 2 crew, so if you have 2 x 1 crew that = 2 crew, that = 4 crew. :P

i know you said crew gear....i mean crew... as in crew people that wear the crew gear. haha.

it has to be taken into account when talking about weights... as when your using the weight that is the car and crew gear... theres an extra blob sitting in the rhs that can add anywhere from 60kg to 120kg. sometimes theres 2 blobs.

so your car is 1225 dry... 1280 wet... how much with you and your navigator slinging around corners??

this has got me keen to weigh my car, i have been meaning to do it since i finished it, i have removed everything mentioned and alot more, and am about 60kg lighter in the front end due to the donk, so im hoping 1100kg.

apparantly (meaning i actually have no idea) this bad boy does a 1:1.7 around tsukuba

weighs just over 1000kg, rb25 turbo on rb20, 310ps.

img20090829.jpg

there is more info around page 140ish in the r32 photography section.

i saw that in a option mag. from the little bit of english it runs a 1:01.xx, and is a RB20 with a 25 turbo. But I couldn't read a weight.

From the pics it's been extensivly stripped and speed holed, and those bolt in jap cages are light as.

Edited by sav man
i know you said crew gear....i mean crew... as in crew people that wear the crew gear. haha.

it has to be taken into account when talking about weights... as when your using the weight that is the car and crew gear... theres an extra blob sitting in the rhs that can add anywhere from 60kg to 120kg. sometimes theres 2 blobs.

so your car is 1225 dry... 1280 wet... how much with you and your navigator slinging around corners??

Ok cool. I thought we were talking about fixed weights of the actual cars, as crew weight of course always vary. I'm around 90kg and Tim needs to go on a diet to offset me, he's about 70kg I think?

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • From my youth: GTi-R clutch change is a massive pain. The gearboxes are fragile? But the car is super cool and I want one 😢 
    • Remember this is 1988 tech.
    • Driveline vibration is resolved. I ended up loosening all my engine mount and trans mount bolts, giving it a good shake then retightening everything and it's gone... Let's just say I was surprised that fixed it.  I've been happily driving it around again but unfortunately put zero time into my direct port/constant pressure WMI setup. I'm on vacation next week, so I'll try and finalize it then.  On a different note, I spent all week fuel/ignition mapping 2x 216L V16 engines. Turbo's were burning glycol and we swapped them out for larger units. We also had planned emissions testing on site, so I figured I'd be there the same week to use their instrumentation and massage any emissions issues out if needed. This was a first for me. Fuel management is similar in certain ways to automotive (i.e air density as load variable) but very different in others. It's all PLC based and AFR's are controlled by air and not fuel. They use a control valve between the turbo and air manifold to control pressure which in turn controls AFR's. Due to this, target AFR tables supplied by the OEM are in pressures and not mass which really through me off. They use air pressure vs fuel pressure tables. I also relied on an O2 concentration sensor the emissions team had in the exhaust. Ignition timing was also all over the place and we were losing a fair bit of power. They're now happily sitting at 16-40BTDC depending on load. We were making about 1600kw at 900rpm at 90% load. Engines were running a lot smoother as well.    
    • heh, aint no R32 ever meeting modern targa cage rules unless the driver is veeeery short OP, good luck with the sale, since its already in the land of freedom I'm sure you will find a good buyer.
    • meh, it was a good video, clear about the issue and how he dealt with it. A bit heavy on the RTV and very brave to put an RB in anything without rebuilding it first, but otherwise I thought it was good Dose, I'm not sure that having the pickup forward is a big issue; yes of course the oil could shift under brakes but the sump should never be empty enough for that to be a problem (unless you also have a higher volume oil pump, and that oil can't return from the head to the sump quickly enough)
×
×
  • Create New...