Torque!

About that |-----------| much

Seriously,

101.5Kw (136bhp) Power 315Nm (232lb.ft) Torque

In standard tune.

Alex

That's strange, in the book it states 125Kw but doesn't mention torque.Oh well. Steve W (in Aus)

Doesn't it depend which vehicle it's in?

Quite possibly, those are the factory figures for a Discovery, but it's quite possible its different in a Defender/Range rover, and could also be different for different markets. The TD5 is quite tuneable, and can produce wildy different figures depending on how it's set up.

Alex

Not that wildly different - the bore and stroke are fixed, tuning can only mildly affect at what RPM things happen.

Richard

Oh, Really? So 67 Bhp from an early 2.5 and 145 Bhp from a tuned TD5 is something to do with the TD5 having twice the cubic capacity?

Better tell all those commercial engine companies that make engines for trucks/buses etc etc that they can't, for example, get anything from 180 BHp to 300Bhp from the same 9 litre engine.

Alex

I think you and Richard might have a different definition of the word "tuning". To some people, "tuning" can mean whacking on a more beefy turbo, changing the crank, flowing the head etc, while when I were a lad it referred to fiddle-arsing around with mixtures. I wouldn't refer to major engine changes as "tuning".

Also, you can increase BHP by moving peak torque up the engine rev range, you don't get any more torque but it comes in at higher revs.

4-cylinder long stoke vs. 5-cylinder short(er) stroke - not the same thing - you were comparing 2 5-cylinder engines of the same bore and stroke.

Richard

Exactly - and it has to be the same basic engine or it's not like-for-ike and cannot be tuing.

My point entrierly.

Richard

Alright then, go back to the 300Tdi which can produce 120bhp - and that does have the same bore and stroke. It's still double what a 2.5 N/A can produce.

But it has direct injection, a turbo, the (then) lastest piston crown design and an intercooler - that's not tuning, that's re-design - effectively a new engine.

Richard