Yaris 1.4 Diesel?

SubScape said:
Straight swap y0
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Lol, depends on his Cooper S :p

My Yaris has barely broken in ! under 24k miles, 5 months old tyres and brake discs and pads all round.

Plus the Cooper S needs to have Climate control & iPod connectivity for me to consider it :D

For the right one, i am willing to pay the right price for it :)

Although....mine is not a Diesel lol, it is the 1.8L Petrol so the above is all moot anyway.
 
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zegna said:
Whats utterly pointless is stating long run economy figures with respect to a super mini. Its a town car, and the diesel will produce much higher urban figures than the petrol.
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Wouldn't be too sure, I've owned a fair few of both and round town the diesels tend to be shocking on fuel (sometimes worse than the petrols) while much better on a run.
 
mattyprice4004 said:
Wouldn't be too sure, I've owned a fair few of both and round town the diesels tend to be shocking on fuel (sometimes worse than the petrols) while much better on a run.
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The main issue with diesel economy is that diesel engines take longer to reach operating temperature and engines are remarkably inefficient when they are not at operating temperature (I get 20mpg on my daily trip to and from work from cold. The other day I had to pop home at lunchtime so decided to see what the same journey but with a warm engine yeilded economy wise - 25mpg!). Therefore if you do mainly short trips from town you'll not be delivering hugely impressive mpg figures.

I've struggled to beat 30mpg from a 320d for example - a car with a combined of well over 50mpg!
 
The fact diesel engines physically have to be stronger due to the larger forces in action from compression-ignition means they tend to use iron blocks, and also tend to weigh a lot more than their petrol counterparts.

I suspect this plays a big part in the whole 'poor town economy' that seems to afflict most diesels, although I'd be interested to know how the ratio of fuel injected when cold/hot varies between petrol and diesel engines from an expert, which I certainly do not profess to be. :p
 
mattyprice4004 said:
The fact diesel engines physically have to be stronger due to the larger forces in action from compression-ignition means they tend to use iron blocks, and also tend to weigh a lot more than their petrol counterparts.

I suspect this plays a big part in the whole 'poor town economy' that seems to afflict most diesels, although I'd be interested to know how the ratio of fuel injected when cold/hot varies between petrol and diesel engines from an expert, which I certainly do not profess to be. :p
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The Yaris has an alloy block which does help it heat up a lot quicker than any other diesel i've owned/driven
 
An Aluminium block would have to be half the weight of an iron block for it to heat as fast. (Assuming the same fueling and compression pressures)
 
I have absolutely no technical knowledge on this subject, but I do know every diesel I've been in has taken a good 2-3 miles to get up to temp (on the gauge), whereas most petrols show full temp on the gauge within 1, 1 and a half at most.

I have no idea why this is, I just assumed iron took a lot more heat to get warm as it's so much more dense.
 
haha well all i know is that i heats up quickly compared to other diesels so take from that what you will.

I do however remember that aluminium conducts heat very well from when i was making my own heat-sinks years ago but whatever i actually couldn't care less :P

But if you want your car to heat up quickly get a subaru, those things are warmed up by the end of the road!
 
mattyprice4004 said:
I have absolutely no technical knowledge on this subject, but I do know every diesel I've been in has taken a good 2-3 miles to get up to temp (on the gauge), whereas most petrols show full temp on the gauge within 1, 1 and a half at most.

I have no idea why this is, I just assumed iron took a lot more heat to get warm as it's so much more dense.
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It could depend on a whole list of things, not just the block/liner materials, depends on how good the water pump is, thermostats, engine calibration, warmup strategy, speed, load, day of the week etc.
 
Raymond Lin said:
Lol, depends on his Cooper S :p

My Yaris has barely broken in ! under 24k miles, 5 months old tyres and brake discs and pads all round.

Plus the Cooper S needs to have Climate control & iPod connectivity for me to consider it :D

For the right one, i am willing to pay the right price for it :)

Although....mine is not a Diesel lol, it is the 1.8L Petrol so the above is all moot anyway.
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Mk1 SR 1.8l by any chance ? dont see many of those at all around
 
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