ALFAGTV6.COM

That would be much appreciated.

Weighed my car last time it was at Morgan Park - 1250kg with about half tank of fuel but no spare

No wonder its a bit of a handful to pull up at the gumtree corner!

Would like to pull 100kg out of it without making it unpleasant as a road car.

Have found about 40kg so far (AC and driver's seat), have plans for another 20kg (gel battery and pass seat) but am running out of options after that (maybe the driver could lose 10kg, but lets not go crazy!).

fibreglass hatch? Rear seats (they're useless anyway most of the time)?

not sure my dogs would be impressed if they lost their seat!

Hey Jason,

Being a race car, would they be hots dogs by any chance?

I know that many racers put larger wheels on to clear bigger brakes, but is there a weight savings or cost to that change (not counting the brakes)?

Another way, is a 17" wheel/ tire combo heavier or lighter than a 15" one?

Scott

It depends on the wheels themselves, but generally yes.

*Generally* when you increase wheel size, the bigger wheels are heavier. Heavier wheels increase the unsprung weight and simply slow the car down. Try driving the same car with stock wheels and big heavy chrome wheels, you'll find the stock one faster.

Having said that, if you get a decent wheel suited for racing applications (say, Team Dynamics or similar), you'll find that their very lightweight in comparison to their standard brother of the same size, probably lighter than the stock wheels as well. If you go that route, then you pick up the advantage of a bigger pawprint (thus more grip), less sidewall flex from a low profile tyre and improved handling.

I think that's the gist of it in a simple overview.

ROCK ON
R~R

Thanks RookieROX.


That is just the thing I was looking for.

Scott

No problem.

I'm sure someone else could give the full scientific explanation, but I think that's enough. Usually it's put to idiots wondering why they're car is slower when they chuck chromies weighing 30kg each on their Civic

But yeh, if you can find a nice lightweight wheel, you pick up the improved handling from lower profile tyres, wider wheels and less unsprung weight, as well as looking good as you fill out the guards

Now on topic, I've been stripping down a 75 and can confirm that most of the figures posted by Alfetta74 are very similar. I noticed a few more kilos in sound deadening tar at ~15kg, ~3kg in additional wiring not required for a track car (central locking, interior lights, power windows, ARC etc) and close to 20kg of foam underlay and carpeting. I couldn't believe the undelay behind the rear seats was 7kg!

ROCK ON
R~R

good list of figures...ill have to translate into LB'S lol

A few more bits -
GTV 2.0 bonnet 15.4 kg
GTV6 bonnet (modified, vented etc) 15 kg
Hatch (boot lid) with no glass 7.5 kg
Rear glass for hatch 9.4 kg

I'm with RR on the wheels - bigger isn't always heavier
My 16x8's are waaaaayyyy lighter than my Dad's 16x6.5's and a little lighter than the original 15x6's

just wondering but what do your 16x8's weigh in at...my 15's are the 13lb or 6.1 kg each

What's a 1978 GTV 2.0 alternator weigh?

Heater Box from a 75 - 7.2kg

Air Conditioning Core - 2.6kg!



I guess whilst we're talking about weight as well - Does anyone think it's worthwhile keeping the heater box in a track car simply for it's demisting capabilities? I'm thinking particularly when it comes to events at Morgan Park.

ROCK ON
R~R

in my cuda wich was a striped down street car ..i put a pc fan in each of the defrost vents and it worked just fine......headers heated the floor pans plenty LOL

You will want to keep the fans and ducting, but sometimes can remove the heavy inner bits. Nothing is worse than a nice wet track that you are desperate to go out and play on but you can't see worth damn.

Its actually MORE of a problem in a racing car than most people realise - no carpets plus hot exhaust (and therefore hot floor) plus leaks equals steam inside the car... Also, the way the weather is going, looks like we are going to see some wet track action this year (maybe even this weekend) WOOHOO!