Car has standard fuel tank - its run on the road and for sprints and trackdays so a smaller tank especially in a hatch probably more grief than its worth.
Weight is the ultimate penalty. It reduces the car's performance in acceleration, braking, cornering, fuel consumption and top speed.
Andrew's car was normally trailered but we did run it on the road from time to time, including 500 miles to run in a rebuilt engine (Cornwall and back; one day!) so not as impractical as you might believe though we did have to fill up occasionally! We also did the Paul Linard 3 hour race at Brands with it, with one refuel stop. A second tank was fitted in series for the Will-Hire 24hr at Snetters!
I must confess that the original racer was a series one with a boot though.
It is all steel and all glass with no metal removed from anywhere.
Does it have the full set of seats as required by the old Prod Saloon rules?
I cant remember how much petrol wieghs (35 litres = about 8 gallon), but on the face of it 900KG sounds a bit high for a sud, although a series 3 perhaps has more metal in it than a series 2, and the 8 gallon fuel might be as much as 50KG ?
It's the bloody fuel tank itself that weighs so much. We also lost the aluminium filler tube and THAT weighed more that the new ally tank!
. . . .the class weight limit . . . . . was 820KG post race without the driver, mine came from this series and had a bit of lead strapped in even then. Therefore this must have been a relatively easy to achieve value otherwise it wouldnt have been set to that, and most suds were on the class limit. .
I know RAC MSA went to Alfa's to weigh the Sud in the late seventies and a friend of mine (Nick Holmes - an active race enthusiast at the time) who worked there was involved in prepping the car for the weighing. EVERYTHING was taken out. Spare, toolkit almost all the fuel etc., etc, The RAC were so trusting in those days!
I also seem to remember that an allowance was made under the measured weight. Something ridiculous like 10% comes to mind? No surely not!?!??
Around 1980, when Andrew was racing, cars were only weighed after the race, not after practice. Guess why we were nearly ALWAYS on pole!
Also the sound deadening tarry type stuff weighs a TON! Not literally but you take my meaning.
Ah! Happy memories!