Southerner Posted February 7, 2012 Share Posted February 7, 2012 Ive got my mk 2 triumph, with a 2.5 tc engine with 's' carbs and the overdrive gearbox. A whole tank is 63.6 litres to fill so over $120 in 95 octane fuel. When driveing it you can get 280km out of the first half of the tank according to the gauge, but the second half goes down in 100km or 150km max. I am wondering if this is normal for a triumph? I understand that its a 6cylinder carbied car, and its heavy! Ive had it tuned up and put a new air filter in but this hasnt helped much at all. Any help would be greatly appriciated Cheers Quote Link to comment Share on other sites More sharing options...
Beaver Posted February 7, 2012 Share Posted February 7, 2012 I get about 450km from 45 odd litres on the open road from mine (2500S). The gauge hopeless so don't go off that. Just go a known distance then top fill it up and see how much u use. Quote Link to comment Share on other sites More sharing options...
Southerner Posted February 7, 2012 Author Share Posted February 7, 2012 Yea thats what i thought it could be ill try that, cheers for the help Quote Link to comment Share on other sites More sharing options...
Beaver Posted February 7, 2012 Share Posted February 7, 2012 but yeh, they are big cars and wont be the greatest on gas. aroudn town mine is pretty terrible but is OK on the open road Quote Link to comment Share on other sites More sharing options...
Snoozin Posted February 7, 2012 Share Posted February 7, 2012 I used to get 600km from a tank out of my PI with a pair of HS6 SU's on it once I chucked the manual OD box in. 90% of that driving was open road. Car was well tuned, running on 185/80/13 tyres with appropriate pressures. Fuel light started flickering on at over 1/4 of a tank. But yeah, totally acceptable fuel economy. I'm now battling 11.8l/100km with the Datsun, which is 250kg heavier however. Quote Link to comment Share on other sites More sharing options...
Llama Posted February 7, 2012 Share Posted February 7, 2012 I presume you've got a vacuum advance, make sure that is running properly. Quote Link to comment Share on other sites More sharing options...
EvoBilly Posted February 8, 2012 Share Posted February 8, 2012 i donno bout fuel economy Triumph2500 should know hes owned a few give him a pm but when you say there a big heavy car thats not tru i always thought they were too then we put one on the weigh bridge and it was under 1300kg lighter then my evo and all the other jap cars we put ova that day Quote Link to comment Share on other sites More sharing options...
yoeddynz Posted February 8, 2012 Share Posted February 8, 2012 We used to get 30 mpg in our UK manual overdrive 2500S. Thats 9.4 L/100km for you young folk btw. Pretty bloody good for a heavy car thats cruised beautifully. My much lighter Viva only manages 27 mpg (10.4l/100) but it has got one of them dangfangled thirsty pulsing wankel thingees.. probably slowed down by all the hoes I pick up.. Quote Link to comment Share on other sites More sharing options...
Lump Posted February 8, 2012 Share Posted February 8, 2012 I once got 36 mpg out of my old 2500 TC with a manual overdrive box, that was on the open road during a Christchurch to Timaru round trip. As noted above the mileage drops considerably for round town trips and suffers alot in stop - start traffic. The fuel gauge in mine always seemed to be pretty spot on, but as others have suggested try refilling the tank from different levels to see what the 'real' reading is Quote Link to comment Share on other sites More sharing options...
yoeddynz Posted February 8, 2012 Share Posted February 8, 2012 All the trumps I have owned have fuel lights that start to flicker above 1/4 tank. Quote Link to comment Share on other sites More sharing options...
Southerner Posted February 8, 2012 Author Share Posted February 8, 2012 yea the light flickers from 1/4 of a tank aswell, yea it does suffer quite bad round town, but on the open its pretty decent, cruises amazing on the open road aswell. Goes much better since i redid the timing. This car has been my favourite car ive owned and would recommend them to anyone. Quote Link to comment Share on other sites More sharing options...
hmmmnz Posted February 9, 2012 Share Posted February 9, 2012 considered running on 91? they are pretty low compression engines and i didnt notice any ill effects on mine, not that you'll get any better mpg, may be a carb strip nd clean, new set of plugs, point sand condenser might be the call, Quote Link to comment Share on other sites More sharing options...
yoeddynz Posted February 9, 2012 Share Posted February 9, 2012 This car has been my favourite car ive owned and would recommend them to anyone. One of the most undervalued cars in the world I think. They always make me smile and I always wonder why they never sell for much here or in other countries. Such good value. I guess they don't suffer from scene tax...yet... Quote Link to comment Share on other sites More sharing options...
DavidTheCreator Posted February 10, 2012 Share Posted February 10, 2012 stock pile them while there cheap Quote Link to comment Share on other sites More sharing options...
glen Posted February 10, 2012 Share Posted February 10, 2012 people already do. there's that guy with heaps park around the property, on the road in Auckland mt Albert ways. seen a place in helensville that appears to have about 6 in various states of decomposition Quote Link to comment Share on other sites More sharing options...
Southerner Posted February 10, 2012 Author Share Posted February 10, 2012 yea my grandfather has quite a collection os them aswell, dont think he is collecting them hoping that one day they will be worth mega bucks. Think he just enjoys them for the good cars that they are. Quote Link to comment Share on other sites More sharing options...
SOHC Posted February 13, 2012 Share Posted February 13, 2012 When I was 18 I had 6 triumph 2500s at difrint times, cost about $40 or 50 to fill it, they were not bad on the petrol, for the weight of the car, i rember if you gave it full throttle the black smoke and soot comming out the exhaust was funny, would leave a shit stain on the wall. Quote Link to comment Share on other sites More sharing options...
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