Thread: v8 vs td5

I agree this topic does get people going so here is my 2cents worth.

I run an 85 Rangie with a 4BD1T Isuzu 3.9 diesel. It sits on 100-120km with no effort it runs 33" tyres and the highest high range gearing you can put in an LT230. Fuel economy is about 10L - 13L per 100km.

Now offroad, to those who said jap diesels are no good the Isuzu is all gear driven no timing belt to break no computer to dictate terms to you. Overall build quality and strenght compared to a TD5 well the army uses Isuzu!!!!!!!!!

One more point when you are hours from home offroad on a track that has alot of water and mud all you have to worry about is the engine is getting air and fuel nothing else matters.

Compared to the old V8. The V8 had no way of climbing rock shelves or crawling through wombat holes (Willoglen Challenge) at 500-750rpm V8,s are fine but for serious off road work some diesels are just more reliable

Originally posted by DaveG
I've just emailed a pic to Michael to post. I've been doing a little bit of work for this company for a couple of years.

In short it's a new diesel fuel injection system mainly aimed at reducing exhaust emissions in heavy vehicles while at the same time improving power and reducing fuel consumption.



As you'll see from the pic, the injection system is quite different and each individual injector has its own fuel pump. Injection pressure is massive, around 160,000 psi.


None the less on paper it's an interesting system with a lot of potential.

Cheers,
Dave

Regards
Michael.

what does it cost?

Product is not available yet and is unlikely to be available off the shelf for some time.

The company's main focus at present is on selling licenses on world markets for use in heavy vehicles, as the technology allows diesel engines to meets EPA 2010 now.

The US defence department is showing interest in the technology, but it has been a long slow process, particularly getting any sort of worthwhile Government help locally.

In one of my magazines somewhere Rover played with this idea as well back in the 80,s the main problem was the total cost to redesign the block and heads to handle the increased compresion ratio and forces created by the diesel, from memory it was to be naturally aspirated there was no talk of turbcharging etc. Also I think the swept volume of the motor was similar to the V8 as well.

Would of made a good alternative if they could get it to perform??

Originally posted by Noddy
apparently Audi are also jumping on the diesel band-wagon.

Audi just won the Sebring 12hr race in the USA with the diesel pictured in Noddy's post.
It's the warm-up race for Le Mans 24hr.

As for me, I love my v8, and have been generally disappointed with the running costs of our Td5.

Ian

In regards to consumption, I've just managed to remember to get my figures for the first time this tankful. Worked out at 10.08 L/100km - and that's from a Td5 Defender 110 with a bloody great rooftop tent and ARB half-rack behind it.

Not bad. In my Nissans, I was improving my consumption by around 2L/100km without the rooftop tent on, so although that doesn't directly translate to the Defender, I'd expect 9.5L/100km to be realistic.

I like those figures indeed!

Love this debate also. You guys with the V8's that live in the cities, would like to know how many klm's you get out of a tank? ( average city driving )