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Old 08 Jan 2013, 11:01 am
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Join Date: Oct 2012
Posts: 5
Default Why so much torque???

This is a wierd and pointless question, but a 1.7 ctdi civic say. Its only 100bhp but 162lbs ft of torque which is a hell of a lot in a car of that size, it does pull like a lorry, it could tow anything. My question is why does it have the good ammount of torque? Is that because its classed as a motorway car? Or designed for the motorway as thats what honda said back in 2003 when my grandad bought it. I mean torque is the ability to pull, so pulling power which is needed on the motorway? I mean the question is why so much torque, any ideas? I mean it does come in handy, its only 100bhp and slow acceleration, but once ots going it pulls like a ****innnn train, its quick when its going

18 pounds foot of torque more than a type r!

Its a lot of torque though, would you agree? Its git more than your average 5 door hatch, such as your vauxhall astras and your 1 series

@harry... Hey dude, i been in f2 car experiences, driving a ferrari soon, been in a db9, ferrari f40... Hahaha and a 5.0 v8 mustang, they are something else arnt they? Currently driving an e220cdi and grandad has a civ.
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Old 08 Jan 2013, 11:16 am
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Join Date: Sep 2007
Posts: 319

it's uses diesel fuel.
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Old 08 Jan 2013, 11:31 am
Join Date: Aug 2007
Posts: 89

Because it's a diesel and diesels are long stroke engines. The longer an engines stroke is the more torque it will produces for a given displacement because the crank throws are longer.
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Old 08 Jan 2013, 11:47 am
Join Date: Aug 2007
Posts: 96

if you think that is something, you really need to get behind the wheel of a good v8, youd be amazed
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Old 08 Jan 2013, 12:01 pm
Join Date: Apr 2009
Posts: 82

It is a charecteristic of a diesel engine. The combination of power and torque is what it important as one without the other is useless.

Totally nothing to do with it being designed for any specific uses

You have a picture in your head of torque and power which is not actually as it really is
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Old 08 Jan 2013, 12:18 pm
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Join Date: Jul 2008
Posts: 9

Its because its a turbocharged diesel - they put out their power at comparitively low revs compared to a petrol (gas) motor, especially compared to Honda petrol motors which are really rev-happy. Why do you think diesels are so popular in trucks (apart from being more efficient) ?
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Old 08 Jan 2013, 12:32 pm
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Join Date: Aug 2010
Posts: 105

Strange to think you have no idea about torque when you talk of a ferrari and the like. so it comes down to design here for a start most internal combustion engines are only 40 % efficient at best so much power is lost in the conversion of the fuel to power output.

then we have this wonderful idea of Brake Horse Power no resemblance to actual horse power just at the crank not at the output shaft the wheels which has other inefficiencies.

for someone who has been around the performance field you don't know a great deal.

diesel engine was a two stroke in the past needed a blower to produce power in a very limited revolutions range that is the key to this argument.

unlike the petrol engine with a power band from some 1500 rpm to in most cases 6500 rpm that gives a lot of flexible range over which torque is delivered. the diesel however has to deliver it's power over 1000 rpm to just 4000rpm so it needs power to get the power converted in someway from an engine. so you not comparing like with like for a start. hence why power is converted in to moving weight to the same speed with a different fuel conversion system.

so man as like a lot you are as we might say less clued up when it comes to what you are talking about automotive engineering than you think you are.

a man can ride a motor cycle with a BHP of just 4,5bhp to 60 mph a lot lighter with petrol as a fuel. but use diesel it would take a lot heavier machine to do the same as diesel engines need to be built with much more rigidity this fact seems to have escaped you.
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