02-15-2008, 04:54 AM
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Amazing 33 fuel economy!!
I was really impressed by the fact I got 520kms from 50L of fuel in my carbied 1.7L 33, and thats not from driving carefully to see how far I can get. I have never reached that number before! Closest I have got is 475kms. The only thing I can attribute it to is driving for longer distances in 80/100kmph zones (car loves it!) Perhaps these engines are more efficient in the slightly higher rpms?
What other L/100kms are other people getting in their boxers?
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- '77 Sud Ti - Project car - C pillar "Ti" stickers needed!!
- '88 series II 33 1.7 Weber'd - More mint than yours! 
Last edited by 77SudTi; 02-15-2008 at 05:02 AM.
Reason: spelling...stupid fingers....
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02-15-2008, 08:14 AM
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630-650 km from 45L, that includes five 1/4 mile races, 130-140 km/h on the highway(550 km) and some mountain road
Last edited by MrX; 02-15-2008 at 08:17 AM.
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02-15-2008, 11:01 AM
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I have got 13 km/l @ 110 km/h average... Which is about, what... 7.7l/100 km?
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02-15-2008, 02:11 PM
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I get about 9l/100kms. Mainly around town in traffic though.
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02-15-2008, 03:18 PM
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 Quote:
Originally Posted by MrX
630-650 km from 45L, that includes five 1/4 mile races, 130-140 km/h on the highway(550 km) and some mountain road
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Quote:
Originally Posted by Oelholm
I have got 13 km/l @ 110 km/h average... Which is about, what... 7.7l/100 km?
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Proves my point about higher rpms being more fuel efficient...what capacity? 1.2L and single carb?
Quote:
Originally Posted by evilgidget
I get about 9l/100kms. Mainly around town in traffic though.
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yeah, so similar to my fuel economy of 9.62L/100kms. What engine capacity?
Im impressed with mine as I have never got to that number before, and being a pair of 40idf webers, I think I did good! Usually I get about 10.5 or 11L/100kms
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- '77 Sud Ti - Project car - C pillar "Ti" stickers needed!!
- '88 series II 33 1.7 Weber'd - More mint than yours!
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02-15-2008, 07:08 PM
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My sud gets around 6.5L/100km on average with the 16v engine.
When I was running the old 8v 1.7 I used to get 10l/100km no matter how I drove it or what I was doing, it just always seemed to be the same.
But in general, I think the 16v engines are very fuel efficient, I remember once my brother got 770km out of 42L in his p4 on a long drive up north. He was pretty impressed.
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02-16-2008, 12:35 AM
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Quote:
Originally Posted by 77SudTi
What Alfa was that with? Maybe a 75 TS? Thats crazy fuel economy.
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02-16-2008, 12:55 PM
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Quote:
Originally Posted by 77SudTi
Proves my point about higher rpms being more fuel efficient...what capacity? 1.2L and single carb?
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02-16-2008, 03:31 PM
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Quote:
Originally Posted by Oelholm
- Yep, that is the one. Should be noted, however, that the tyre pressure was a bit low, I reckon that with more air it would probably go even better. Sure helped turning at low speeds |
I know that the 1.7 engines hit peak torque at around 3500rpm and the older engines hit power a bit higher up the range, maybe it's that at a lower speed when the engine needs that little bit more fuel to coast because it's not in it's power band that causes this?
I think that's very interesting, because they always said that the golden speed was like ~90km/h for fuel economy but that must be a fairly general application of a rule?
lenus.
PS: I also remember in my first sud 1.5 the info book that came with it said that the 1.5 single carb engine would do 6.6l/100km @ 90km/h and like 8.8 or something for 120km/h...
Last edited by lenus; 02-16-2008 at 03:32 PM.
Reason: ps
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02-17-2008, 06:15 PM
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I used to get about 550 from my 16v, driving softly in country 60km/h areas no stop start. Been getting around the same with my TS but lots of overtaking in 100+km/h area's. Not sure on tank sizes about 45l.
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[SIZE="1"] Hugh.[/SIZE]
[SIZE="1"][COLOR="Navy"]Current Cars:[/COLOR]
[COLOR="DimGray"]- '90 75 TS, koni shod
- '69 series I 1750 GTV (TS project)[/COLOR]
[COLOR="Navy"]Previous Cars:[/COLOR]
[COLOR="DimGray"]- '91 series III 33 16v QV
- '89 series II 33 1.7 i.e[/SIZE][/COLOR]
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02-26-2008, 04:03 PM
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I average about 9.6l/100km in my 33 veloce (twin dellortos) for daily driving, but got about 8.3l/100km on a long run recently averaging 70-80 mph (110-130km/h). Not sure if its just running at higher revs, may also give better economy when hot, and not in stop start situations.
Al
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02-27-2008, 11:57 AM
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Hi,
fuel-injected 33s have better fuel economy than those fitted with carb engines
the tank capacity is 49 liters, on the 1.3 engine fitted with the marelli system i was able to reach 1134kms on a full tank.
having installed a fuel flow meter on the dash (electronic device computing the product of injection time and engine rpm) i have observed that low revs and high gear provide the best fuel economy. However if the rpm drop below ~1800 and you have too floor the gas pedal, the engine load increases and the engine sucks petrol like crazy ; dropping one or two gears and revving the engine is better.
all the best
zp
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03-05-2008, 04:04 AM
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I used to drive my Alfa 75 with a 3 liter V6 at around 0,9l/100km.
The Alfa 33 1.7 8v with twin Dellorto did 1l/100km the last time I gave it full tank, though, I just bought it and I have only been to the gas station three times so I'm not used to drive it yet...
I was hoping to be able to drive it at around 0,6-0,7 if that is possible...
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Alfa Romeo 33 1.7QV, 1987
Sweden
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03-05-2008, 04:26 AM
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Quote:
Originally Posted by x8668k
I used to drive my Alfa 75 with a 3 liter V6 at around 0,9l/100km.
The Alfa 33 1.7 8v with twin Dellorto did 1l/100km the last time I gave it full tank, though, I just bought it and I have only been to the gas station three times so I'm not used to drive it yet...
I was hoping to be able to drive it at around 0,6-0,7 if that is possible...
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[color=red]Custom Alfa Romeo Sprint Qv 16V[/color]
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03-05-2008, 04:37 AM
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Ops, of course I meant 9L/100km and 10L/100km...
Or actually 0,9L/10km and 1L/10km...
But they both mean the same... :-)
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Alfa Romeo 33 1.7QV, 1987
Sweden
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