Torque, displacement or horsepower?

[VCheng]

A question from my side

1: The engine which came in MK-1 (khyber/swift) in Pakistan was a 3 cyl 6 valve carby engine having displacement 993 cc producing 50hp.
2: The engine in cultus is a 4 cyl 16 valve EFI one having displacement 993 cc, giving you an output of 65hp.

@Vcheng as you said that there is no replacement for displacement,
so in this case the displacement being the same i-e 993 cm what is the reason of this 15hp gain?
is it the 4 valve/cylinder technology or the addition of one extra cylinder does the trick?

The short answer is threefold: the 4 valves per cylinder, the extra cylinder and the fuel injection all improve the power rating.

For a better discussion, please post both the bhp and torque ratings with rpms for each for both engines and then I will be able to explain further.

[daniyalahmad]

^^ Thanks for the prompt response,
I will try to get the figures

[ferrari10]

Dear all,
Please if anyone can tell me what is the difference between the two when comparing engines. Thanks.

[ahmadbila]

thats one of the most difficult thing to understand. atleast it was that way for me... i ll find u the thread i made. Xulfiqar bhai posted on it several times to explain it to us all. helped a lot.

[ahmadbila]

https://www.pakwheels.com/forums/performance-modification-tune-up-preventive-maintenance/138604-torque-displacement-horsepower

There u go...

[ferrari10]

thats one of the most difficult thing to understand. atleast it was that way for me... i ll find u the thread i made. Xulfiqar bhai posted on it several times to explain it to us all. helped a lot.

Thanks Ahmad Bhai. It will be a great help.

[ferrari10]

Should I go for an engine with a high torque or high horsepower?

[ahmadbila]

Should I go for an engine with a high torque or high horsepower?

looks like u didnt read the thread. it depends on what u want to do with the car.

[ferrari10]

looks like u didnt read the thread. it depends on what u want to do with the car.

Oh Bhai Jaan. Asaan alfaaz main batain. Main aik bohat barra jahil insaan hoon. Hah... hah.

[Dongskie]

Great topic!

Now I wonder how much torque does my Horse produces....

Its race horse, hasn't win any races yet...

[ahmadbila]

Oh Bhai Jaan. Asaan alfaaz main batain. Main aik bohat barra jahil insaan hoon. Hah... hah.

Sir mai aap sy bhi bara jahil insaan hon, mujhy khud pata hota tou yeh thread kion bananta

[supereagle]

Great topic!

Now I wonder how much torque does my Horse produces....

Its race horse, hasn't win any races yet...

What breed is your horse sir? I'm a great horse-lover.

Regards

[supereagle]

Oh Bhai Jaan. Asaan alfaaz main batain. Main aik bohat barra jahil insaan hoon. Hah... hah.

Mohtaram Ferrari 10 Sahib,
The concept is very easy and very basic. How do you want me to explain it to you? Do you want me to explain it at beginner's level, intermediate level or advanced level? It all boils down to the basics of Physics and Math. To understand it you should have a basic knowledge of Physics and Math. Besides, Newton is my favourite scientist.

Don't worry at all. You will get the concept very clear in your mind. Just bear with me a little.

Regards.

[ferrari10]

Mohtaram Ferrari 10 Sahib,
The concept is very easy and very basic. How do you want me to explain it to you? Do you want me to explain it at beginner's level, intermediate level or advanced level? It all boils down to the basics of Physics and Math. To understand it you should have a basic knowledge of Physics and Math. Besides, Newton is my favourite scientist.

Don't worry at all. You will get the concept very clear in your mind. Just bear with me a little.

Regards.

Dear Supereagle Bhai,
Thanks. Buss yay samajh lain k mujhay 'torque' aur 'horsepower' k baray main confusion hay. Please make it as simple as possible. Buss yay samajh lain k mujhay kuch nahin pata.

[ahmadbila]

Mohtaram Ferrari 10 Sahib,
The concept is very easy and very basic. How do you want me to explain it to you? Do you want me to explain it at beginner's level, intermediate level or advanced level? It all boils down to the basics of Physics and Math. To understand it you should have a basic knowledge of Physics and Math. Besides, Newton is my favourite scientist.

Don't worry at all. You will get the concept very clear in your mind. Just bear with me a little.

Regards.

Sir kindly explain it at all levels... wud love to read it at all levels

[supereagle]

Sir kindly explain it at all levels... wud love to read it at all levels

Mohtaram Ahmad Sahib,
I'm a bit busy today. I'll be back in a while. Please bear with me. This is a hurried note.

I will explain in detail and will seek feedback from you and Ferrari 10 Sahib if the concept has been understood by you guys or not. I always encourage discourse when it comes to Science. 'Science is nothing but trained and organised common sense' as outlined by this quote by T. H. Huxley. That is the beauty of science. 1+1 is always equal to 2. Mathematics is the key to science success. A student of science without a good grasp of mathematics is like a tennis player without a good backhand, a swimmer without a good kick or a basketball player without a good dribble.

The foremost thing lacking in education in Pakistan is lots of rote (learning by rote) and the poor kid not allowed to reason or engage in discourse with the teacher on the basic thing 'why'. We should encourage 'common sense' in learning and to teach a kid 'common sense' is to teach him the basics of Mathematics. I'm not implying you or anybody else as a kid but I'm just trying to highlight the shortcomings in our education system. Lots of rote learning and not letting the child think. Starting from kindergarten and right to Ph.D. level, all the education system works on rote which is very unfortunate. This is not only true for Pakistan but also for countries like USA but in Pakistan it is a much worse.

I'll be back. The concept is very easy and simple to understand.

Rattay say number tau aa jaatay hain magar science key samajh nahee atee. Saree dunya main imtahanee nizaam Rattay par chalta hay.

Regards.

[osama96]

HP or KW is a rate at which work is being done.

Torque is engine ability to do work.

In simple

HP describes how much power engine is producing at any instant of time.

Torque describes how much power is available at cranck or drive shaft.

[supereagle]

HP or KW is a rate at which work is being done.

Torque is engine ability to do work.

In simple

HP describes how much power engine is producing at any instant of time.

Torque describes how much power is available at cranck or drive shaft.

Mohtaram Osama Sahib,
No offence please. I would like to correct you here. Torque is not the ability to do work, it is called something else. We have another term for 'ability' to do work, 'capacity' to be exact (capacity to do work).

Regards.

[supereagle]

Sir kindly explain it at all levels... wud love to read it at all levels

Mohtaram Ahmad Sahib,
This is a hurried note. I'm very busy today too. I will explain everything in detail very soon.

Regards.

[ahmadbila]

Mohtaram Ahmad Sahib,
This is a hurried note. I'm very busy today too. I will explain everything in detail very soon.

Regards.

Sir take as long as u want. no hurries Thanks