Originally Posted by sandys
The 5cyl will fit in the 147 and GT Alfa just don't do it, have you seen the V6 compared to the 5 cylinder its massive.
Diesels aren't ideal for racing as the powerband is pretty short and the ability to hold on to high revs is what you need for fast driving, it doesn't mean you can't race them though, regarding the whole twin turbo affair, that should be cool but the heat generated buy two turbos is going to be hard to keep under control, I doubt diesel will ever reach the levels of performance of petrols everything has to be so solid due to the high compression required for combustion this means engine internals can't move as fast so the rev limit is always going to be lower, large capacity and big turbos is the key I guess but the weight of the engine will take the edge off. Diesels are bought for economy not racing thats all, I know I'd rather be in my old 147GTA or in a 3.2GT rather than my JTD but its pretty good at what it does, perhaps a few mods will give me respectable performance but even 220bhp and 300lbs of torque from a 5cyl diesel is never going to be as satisfying to drive as a petrol V6.
Just for the record, I am not comparing diesel to petrol, more of why can't we have more power please ALFA!. If I were though, I quite agree with your comments Sandys, with regards to the satisfaction - I feel (well at the moment anyway) that diesels whilst fast, are not as satisfying to drive as a petrol V6
as the sound and refinment is not so good. Owning a V6 alfa is great, but IMHO a diesel sounds every bit as good as a TS inside the cabin.....wait for it (I'm gonna get chucked off this site for saying that aren't I!). A four cylinder does not do it for me, but a 6 would. I did not want a 6 though, due to higher insurance, fuel economy and running costs. Therefore for me the diesel is
more satisfying for me to drive.
Your point though about the revs, diesels have much longer gears and therefore you do not need to have high revs, although admittedly on a race track I do love the sound of 6000-9000 rpm! The m-jet in mine has a much wider torque and power curve than most diesels - it has 90% of its torque between 1750 and 3750, so it has less tail off. I understand what you are saying as my dad has a Rover 25 TD and that goes like stink, but only to 2,500 rpm and then it dies. As to you doing mods to your JTD to get respectable
....I'd call what your JTD is now already respectable
, just not in the GTA league, thats all.
Besides, you could go down the road and say cars with front wheel are not very good to race as they understeer, but we still have the ETCC and BTCC, or road cars and any good not race as they 'only' rev to 7000RPM, when F1 cars go to 18/19000rpm.
Just remember that WRC cars only rev to 5,200 - 5,500 as their max torque and power is here, so that is quite low revving too.
Your reasons of owning a JTD are more than likely different to mine, as you already have a GTA, but what about the majority of us nowadays who do not want a GTA like yours (becuase of practical reasons more than the fact they are crap, which they aren't of course
), but want more power in their JTD. Take for example the JTD 8v and JTD16V - both have virtually identical emissions, economy and same service costs, yet the 16V is far quicker, more powerful and torquier at what expense.....nothing. Now if they could develop this 210PS twin with the same running costs as my 140PS, then I could almost
have the satisfaction of a GTA....
Anyway....back on track....who knows the way diesel technology has gone over the past five years alone, maybe diesels will change dramatically, both power, refinement and sound to match the petrols...that is if we are not all blown up by Bin Larden by then!