there is a big drop in torque where you say there is a hole 2400-3100

Her Standard Ford map. Full custom made exhaust & K&N57i

Sorry..

Here is the graph for people to have a look at..



Rich.

You know whar steve u are right and I am sort of right.. here is the clarification as to question around 'peaky' engines..

It is the horsepower curve is typically what matters, and your 'wheel' torque is generated by your gearing. I completely forgot about that..

The reason being that gearing is a torque multiplier..

My statement that the car with more torque will be quicker, given the same gearing is still correct, it is just that it is a product of HP..

Power is what matters if you're after speed and is basically a measure of the rate of work being done by the engine but it doesn't give a good measure of 'grunt'.

The example would be my motorcycle engine (CBR600) which revs up to 12/14000rpm and claims to have about 100hp. Impressive output for a 600cc engine but realistically if you threw this into a fiesta you certainly wouldn't be as fast as the TDci.....

If you want a car to pull well low down and generally just be easy to drive, you need torque, not power, as this is true measure of how much pulling capacity the engine has

Power is simply the product of torque and rpm

Exactly, that's why I prefer my TDCi to my ST.

Even though I'm nowhere near as quick from say 0-60 the ammount of torque makes it fly from say 30-50 in 4th gear.

Who spends all day at 6,000 rpm anyway.

Top end power is fine for the race track but no good when you're trying to merge onto the M6 at 45MPH and need to get to 70MPH quickly

you lost me quite a fair bit back, but i agree torque first then bhp, but you need a balance of both, a bit like yin and yang lol, in order to acheive optimal results,

Thing is you can argue the pros and cons all day long but in my humble opinion torque is the way forward for an every day useable engine. It why my next car will be an oil burner and my next bike will be a V-twin.

Oil burners have improved so much over the past few years - they're no longer lazy noisy tractors and are even catching up petrol engines in terms of peak power output now too...... but with easier delivery

Sure, nothing touches a petrol engine spinning at high speed for top end performance but my ST very rarely gets above 4000rpm on a standard run to I've got none of the benefits of a petrol engine with all of the drawbacks....

but in such a race the extra range and less fill ups would have minutes advantage, this does not equate to performance tbh

But the peugeot which took the fastest lap was a diesel

look back at my orriginal post - diesel engines are now starting to allow higher rpm so you're getting the benefit of increased torque (diesel has more energy in it) with the power gains coming from higher rpm.

it used to be that deisel engines were produced from heavy, but stong materials to cope with the increased compression, but we're starting to see ligher weight materials come in that allow significant weight saving so they can be pushed further.

All fuels have their place but my next car will be a diesel

ok.. the exhaust and sports cat have arrived.. Just waiting on the induction from GGR..

Roll on the 15th for fitting at jamsport..

Awesome - have you run your standard tune on the dyno yet to see what your baseline is?