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here we go again petrol vs deisel
Moderators: toaddog, Elmo, DUDELUX
here we go again petrol vs deisel
I keep hearing people constantly say a deisel has more torque than a petrol.
I am looking at the original brochers from toyot that i got with my cruiser.
A naturally asperated deisel's delivers a torque of about 260 Nm at low rpm and a max of 271Nm peak.
A petrol delivers a minimum ( of 320at low rpm)Nm and a peak of 373Nm.
So whats the deal deisel owners.
Yes you do have a flatter torque curve and produce your maximum down low but even that maximum at optimum revs is not even close to a petrol at worst case senarion.
so please tell me why they are better. (My mates keep telling me I don't have areal truck)
apart from fuel consumption. Even with that if you drove petrol the way a deisel drives there would not be much difference in fuel.
I am looking at the original brochers from toyot that i got with my cruiser.
A naturally asperated deisel's delivers a torque of about 260 Nm at low rpm and a max of 271Nm peak.
A petrol delivers a minimum ( of 320at low rpm)Nm and a peak of 373Nm.
So whats the deal deisel owners.
Yes you do have a flatter torque curve and produce your maximum down low but even that maximum at optimum revs is not even close to a petrol at worst case senarion.
so please tell me why they are better. (My mates keep telling me I don't have areal truck)
apart from fuel consumption. Even with that if you drove petrol the way a deisel drives there would not be much difference in fuel.
it all come back to rpm! why u ask? well i asked the same question my sisters boyfriend, he bought a brand new v6 luxie, and wholey shit they have some go but we tried to see what the torque was like and test my rig, intercooled TD 2.4 lux. well both rig were in 4 box high and tried pulling at the same stump well the petrol made fart and squeeling noise, like someone raping a pig but just clutch burn and smoke we could all smell, where as mine didn't have any clutch spin and levered the stump out? go figure? i no this isn't rocket science stuff but from my eperience it the rpm in relation to the torque down low that matters, slower rpm+more torque low end= more control!
just my 2c
cheers
simon
just my 2c
cheers
simon
Eliteforce Heavy Fabrication
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Proud supporter of these businesses:-
Pig Dog Shop(hunting)- Greg 0448024776
CrispProducts(Racetec Gauges)-Chris(pm him)
Fourbies at Moorooka- Ryano
you say in practice this is the case, I'm not saying your definetly wrong, but could you a deisel owner exlain why the data is wrong.
The figures produced by toyota temselves say that the petrol still has more torque down low tha a diesel.
260Nm vrs 320Nm, the deisel stays fairly constant from here on but the petrol's increases drematically as the rpm increases. (the gap increases.)
Starts at a higher torque than diesel at low rpm and the gap gets icreases as the rpm increases.please explain what i'm missing.
to me, we have higher torque at low rpm and even more torque again at higher rpm
Im just looking at the munufactures specs.
The figures produced by toyota temselves say that the petrol still has more torque down low tha a diesel.
260Nm vrs 320Nm, the deisel stays fairly constant from here on but the petrol's increases drematically as the rpm increases. (the gap increases.)
Starts at a higher torque than diesel at low rpm and the gap gets icreases as the rpm increases.please explain what i'm missing.
to me, we have higher torque at low rpm and even more torque again at higher rpm
Im just looking at the munufactures specs.
Last edited by bruiser on Fri Nov 12, 2004 10:43 pm, edited 1 time in total.
maty wrote:powerchipped Hilux 305nm
dtronic hilux turbo diesel 365nm
petrol may be quick off the mark but choke with big tires, trailers and weight.
Put this gear behind a diesel you won't ever know its there,
Funny, most think diesel are ok until they put 35's and a trailer on it, even after lowering the diffs they still want a turbo, petrol pulls the same with 4.1 diffs and no turbo, no problems.
Fuel economy may suck as they load up but they don't lose power as fast a NA diesel ckimbing the Toowomba range, at least you still have grunt to overtake while towing.
Pat,
Brisbane, Australia,
JK 4door Rubicon, currently 4 Sale :(
It's a Jeep thing, I don't understand........
Brisbane, Australia,
JK 4door Rubicon, currently 4 Sale :(
It's a Jeep thing, I don't understand........
Re: here we go again petrol vs deisel
bruiser wrote:
Yes you do have a flatter torque curve and produce your maximum down low but even that maximum at optimum revs is not even close to a petrol at worst case senarion.
so please tell me why they are better. (My mates keep telling me I don't have areal truck)
apart from fuel consumption.
I think the flatter torque curve is the reason lots of guys like diesels- feels like a truck.
Interestingly, my bro bought a new Nissan Navara with the 115kW T/D and he hates it, much preferring the V6 Triton he had as work truck b4- considering he drives 200km+ each day with heavy trailer I was surprised to hear this.
it's not just the specs on the sheet.
the sheet specs are at the specified rpm AT FULL THROTTLE.
if you measured them at say 1/2 throttle the diesel probably would be making similar figures to foot to the floor figures, where as the petrol may be making 1/3 less torque or something, hence the fact with the stump pulling in a petrol,
you'd A have a lot less torque untill you cracked the throttle, so you'd either floor it and side step the clutch, or keep the revs up as you slowly brought out the clutch, in an effort to keep torque up, where as the diesel you could probably get away with less throttle opening while the clutch was engaging, then you could stomp it with the driveline fully engaged. probably better for the driveline this way
the sheet specs are at the specified rpm AT FULL THROTTLE.
if you measured them at say 1/2 throttle the diesel probably would be making similar figures to foot to the floor figures, where as the petrol may be making 1/3 less torque or something, hence the fact with the stump pulling in a petrol,
you'd A have a lot less torque untill you cracked the throttle, so you'd either floor it and side step the clutch, or keep the revs up as you slowly brought out the clutch, in an effort to keep torque up, where as the diesel you could probably get away with less throttle opening while the clutch was engaging, then you could stomp it with the driveline fully engaged. probably better for the driveline this way
Spit my last breath
bad_religion_au wrote:it's not just the specs on the sheet.
the sheet specs are at the specified rpm AT FULL THROTTLE.
if you measured them at say 1/2 throttle the diesel probably would be making similar figures to foot to the floor figures, where as the petrol may be making 1/3 less torque or something, hence the fact with the stump pulling in a petrol,
you'd A have a lot less torque untill you cracked the throttle, so you'd either floor it and side step the clutch, or keep the revs up as you slowly brought out the clutch, in an effort to keep torque up, where as the diesel you could probably get away with less throttle opening while the clutch was engaging, then you could stomp it with the driveline fully engaged. probably better for the driveline this way
He said it all. With a diesel, you can control the torque a lot easier, without foot flat to the floor. They dont have the same amount of punch as a petrol, which makes them awesome for rock crawling.
If you want a spare 60 for bits-
http://carl.outerlimits4x4.com/viewtopic.php?p=1109227#1109227
http://carl.outerlimits4x4.com/viewtopic.php?p=1109227#1109227
i agree with Daz. apart from the crummydore bit . but petrols are brilliant if you get the need for speed. offroad, depends on the stuff. mud where you need to spin the sh!t out of the tires to clean the treads, give me a petrol. but for cruising long distances, or tight slow speed stuff, diesel all the way (never driven a turbo diesel).
Spit my last breath
Road Ranger
shorty_f0rty wrote:could the difference in engine compression also a deciding factor when your considering a purchase?
i reckon Ive laid off my braking heaps and just the the gearing/engine braking when i can.. would you have the same with a petrol?
Yep, in a big petrol yes, and besides a petrol can compression brake at 6000rpm, a diesel can't
Pat,
Brisbane, Australia,
JK 4door Rubicon, currently 4 Sale :(
It's a Jeep thing, I don't understand........
Brisbane, Australia,
JK 4door Rubicon, currently 4 Sale :(
It's a Jeep thing, I don't understand........
Road Ranger
I recall a mag artical on this very subject a while ago and bottom line was that to recover (petrol$) the additional $12000 of the diesel you would need to travel 350,000+ Kms.
They however didn't take into account the increased service shedules. 2:1 diesel :petrol, so it could be further.
On the other hand, that $12000 is enough to transform the petrol into a 4wd beast. Pour those $$$ into suspension and recovery gear upgrades and see who gets further in the real world.
Are the Toyota Diesels mechanical? That is will they run without electronics like the old diesels (and the 4.2 Nissan i think?).
They however didn't take into account the increased service shedules. 2:1 diesel :petrol, so it could be further.
On the other hand, that $12000 is enough to transform the petrol into a 4wd beast. Pour those $$$ into suspension and recovery gear upgrades and see who gets further in the real world.
Are the Toyota Diesels mechanical? That is will they run without electronics like the old diesels (and the 4.2 Nissan i think?).
Lifted, locked, loaded, reduced, rolled, and rowed
FZJ80, 1FZ-FE, A442F, 37's & 5.29's.
FZJ80, 1FZ-FE, A442F, 37's & 5.29's.
alfred the butler wrote:umm the facts
100 Series Turbo diesel
- 430NM at 1400rpm
- 150kw at 1400-3200 rpm
- 11L/100km
100 Series Petrol
- 410NM at 3400 rpm
- 170kw at 4800rpm
- 16L/100km
from a toyota brochure....
trouble is TD is $12000+ more than petrol
Yes well you forgot to quote any facts for a N/A diesel and Turbo petrol
$12k buy's a hell of a nitrous, turbo set up on a petrol or a 454 blown chev conversion
Last edited by Rainbow Warrior on Fri Dec 03, 2004 9:52 pm, edited 2 times in total.
Pat,
Brisbane, Australia,
JK 4door Rubicon, currently 4 Sale :(
It's a Jeep thing, I don't understand........
Brisbane, Australia,
JK 4door Rubicon, currently 4 Sale :(
It's a Jeep thing, I don't understand........
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