Standard vs Modded

[mix]

and on a mk2 engine, it wont make significant drop in torque....

One thing i have learnt fom my course, is as you increase bhp, you start to lose torque and vice-versa...(that was for electircal motors though, but it is the same thing really )

Edit: that was for speed and torque, ignore my ramblings the spary paint has gone to me head

[Agreeable Slick]

On a standard engine it won't no, but a modded one it will, which is what this post was about primarily. 

[AudiA8Quattro]

I wouldn't of thought that a lightened flywheel would have much of an effect on torque/bhp output.
As said above it would make the engine rev more freely.

regardless it still looses inertia, that which makes a final say in the final torque rating. NOT BHP.

If torque drops, then BHP will drop at any certain point in the rev range.
They are both linked together.

[mix]

i just realised it is Corin

[Thom89]

Bottom line.. Torque gets you up the road faster, not necessarily BHP. Thats why low BHP turbo diesels haul ass! they ooze torque!
Unfortunately there are lots of modded cars out there, of all types that claim to have extra BHP, stick them on a Dyno.. that soon sorts the men out from the boys!
In my experience, one of the biggest culprits for loss of power on a heavily tuned engine is a poorly designed exhaust system, usually the bore dia is too large! beware of exhaust that claim to increase BHP by 5-8bhp.. that power usually comes at the cost of torque!
Tom

[Agreeable Slick]

2.5" is the optimum for a valver.

In regard to torque, if you didn't have any then what is the point of having loads of power? We have had this arguement before, and it went the same way this is going. So i can't be bothered.

[V_Arse6]

2.5" is the optimum for a valver.

In regard to torque, if you didn't have any then what is the point of having loads of power? We have had this arguement before, and it went the same way this is going. So i can't be bothered.

There is no real point to the BHP figure, but people understand what it means.   I've always thought of it as power being the 'weight' it would be able to pull at a given RPM, but torque governs how quickly/easily it spins faster (obviously required for making the car actually accellerate/pull away)

You could have all the power in the world at 2000RPM, but if your engine doesn't have enough torque to accellerate up to 2000RPM, it's of no use to anyone. 

In essence, IMO, BHP is basically a marketing figure.  People know what a horse is, so "150BHP" is something they can cope with. "230Nm" means nothing to most people.

[VeeDubGTI16v]

torque isnt as important in lightish cars like a mk2 i wouldnt have thought, as long as there is 'enough' to get it up to speed, once your on the go your gonna be keeping the revs up high anyway 

[mix]

take away the torque mark and you aint going no-where...might as well use the engine as a generator

torque = Nm (how well the engine is at moving stuff)
BHP = Power/kW how much energy the engine produces....

[VeeDubGTI16v]

but as long as you have enough, which you will with a 2.0l bottom end it will be ok. any more like with a turbo engine its gonna be stupid trying to get the torque down from low speeds. im not saying you dont need torque