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#21
Peetan

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 snowdude, on 07 October 2014 - 06:17 PM, said:


One or two of the F1 companies developed a diesel racing engine a few years back and wanted to use that in their cars, but they were band because during testing they left the petrol engine cars standing.


I heard something about this- I thought they voted against it because-
1) acceleration was pretty poor and
2) the race sounded like a stampede of farting rhinos.

Could be wrong though.

#22
snowdude

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Yes diesel have more power at lower revs and in fact red line around the 4500rpm mark against petrol engines around the 6500rpm mark.
Trucks and tractors red line even lower.




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#23
TubbyBeaverinho

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 Peetan, on 07 October 2014 - 08:30 PM, said:

Don't they fire more effectively at lower revs or something like that, which makes them more powerful at lower speeds?

Don't know why I'm even piping up really; can't drive and can't see myself doing so soon :(


haha! same as me! :D
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#24
snowdude

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 Peetan, on 07 October 2014 - 08:34 PM, said:

 snowdude, on 07 October 2014 - 06:17 PM, said:


One or two of the F1 companies developed a diesel racing engine a few years back and wanted to use that in their cars, but they were band because during testing they left the petrol engine cars standing.


I heard something about this- I thought they voted against it because-
1) acceleration was pretty poor and
2) the race sounded like a stampede of farting rhinos.

Could be wrong though.


They were band because they beat all the petrol cars for acceleration and top speed.
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#25
Mr Wiggles

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Well, for starters, there is more energy in diesel than in gasoline. About 15% more for the same volume, which is the measure by which fuel is sold. If its cheaper, it's usually because of taxation (to make transportation and buses cheaper), not because of worth or the yield you get from crude. As a simple fuel, diesel is a more valuable product.

Regarding sports cars, Ferrari, McLaren, and Porsche have all just built petrol electric hybrids. They could have built diesels had they wanted to.
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#26
Big Al

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Mercedes (since around the Cretaceous period), BMW, Audi, Porsche and Maserati all produce diesel engine sports cars.

In the case of Maserati, the engine was co-developed with Ferrari.
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#27
Chriselle

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I have driven diesels for the past 20 years while in Japan. Love em... I also do a lot of the engine work myself. Mr Wiggles is right about diesel fuel having more stored energy than petrol but that's only one factor.

Torque comes from stroke and the longer the better.......hows that for a loaded statement.. :lol: The greater offset on the center line of the crankshaft means the longer the connecting rods which can exert more force on the bottom stroke. And that translates to lower RPM's as Snowdude mentioned.

Another factor is compression. Diesels are designed to run with way higher compression ratios than petrol engines. And the third factor that is tied in with compression is turbo boost.

It's all quite complicated but you can play around with turbo boost to increase power. Even a stock engine can have massive performance gains just by playing with the amount of turbo boost. The big issue is....boost=heat so that is why we have things like intercoolers or methanol injection and big exhaust systems..

Don't believe anyone who says diesels are cheaper or last longer than petrol engines or any of that BS... Sure, you can get 500K kms from a diesel engine but there are a lot of EXPENSIVE maintenance costs to get it there...never mind the much higher initial purchase price. Diesel ISN'T cheap..
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#28
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What do you pay for a litre of diesel in Japan?

It's around $1-50 in Qld.
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#29
Chriselle

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around 140 yen to 150 yen per litre.
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#30
snowjunky

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Talking of diesels - My new wagon:-

Posted Image

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#31
snowdude

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Nice motor
I see you got a snorkel on it, you planning on doing some river crossing with it?
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#32
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In my student days I was fond of a diesel

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#33
Chriselle

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 snowjunky, on 08 October 2014 - 07:27 PM, said:

Talking of diesels - My new wagon:-

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OK....I have to yell this... BASTARD..... :wave: EXTREMELY BADASS TWIN TURBO 200 RIG!!!!!!! Welcome to the club Snowjunky. Now you'll end up spending more time at the ih8mud forums and the LCOOL forums than around here. That bull bar looks factory..very interesting. That truck is the pinnacle of cushy light wheeling right there.. You'll be able the cruise those Aussie washboards in comfort at speed. Man,, I'd love to try out the crawl system. Too bad we can't get out for some overlanding together. Oh..and BTW....Chicks dig snorkels..
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#34
snowjunky

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ha ha - snorkel envy. there Chris.

Yes it is good to get back into a cruiser - I had an 80 series for around 10 years a while back. It was one of the first turbo diesels in Australia and i had a few problems with the injectors at the time but still loved it

Looking forward to spending a fair bit of time in 'Big Pearl' (named by my grandkids - its Perlescent white & BIG!). though not as gangster as your bad boy rig.
No doubt she will be getting in the mud and dirt especially when we head off next April to do the big lap (or 2) around Oz.
The bull bar was part of the kit included in the "Altitude' badge which also includes some of the Sahara kit - sat nav with rearview camera, leather electric seats, cool box & a few other bells and whistles.
I have added a rear lift kit, UHF radio & aerial, and a brake controller for when I hook the van up..

Lovin the view from up there.
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#35
Chriselle

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I'm snorked, too Snowjunky.. ;)

Ah yes....the two stage 1HDT injectors are a little finicky and I've had mine rebuilt at a pretty hefty cost. Actually, only one was bad but I had all 6 done anyway. Still smokes a lot but that's part of the diesel Cruiser heritage.

Ya know, I was going to say that from the first pic it looks like you have a tiny bit of stinkbug but didn't want to mention it as it could be from the camera angle or something. Why lift only the rear?? .. and what lift did you have done?

Regardless, Big Pearl is an awesome rig...Cheers
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#36
Mr Wiggles

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 Big Al, on 08 October 2014 - 05:22 AM, said:

Mercedes (since around the Cretaceous period), BMW, Audi, Porsche and Maserati all produce diesel engine sports cars.

In the case of Maserati, the engine was co-developed with Ferrari.


For sure, there are loads of great diesel motors. Its just conspiracy theory to say they beat gasoline engines on every metric and being held back by regulation or somesuch.

The poor performance of gasoline engines at low revs can be avoided by a hybrid setup where minimal loads are handled by running at a higher, minimum-for-efficiency level of 1000-1500 revs, dumping any excess power into a battery, and then turning the engine off and using the power in the battery. That's basically how the Toyota system works. The engine is only on during warming up, acceleration, and going uphill.

You can get the clean diesel X Trail now for about 1.2 million yen second hand. It should do about 14-15 off diesel, so under 10 yen a km, making it one of the cheapest 4wd cars to run. That will beat a lot of 4wd kei cars, and an X Trail is much bigger than them.

Great car SnowJunky. Looks wicked!
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#37
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Great rig Snowjunky - definitely ticks all the boxes:

Room for survey equipment & pegs & stakes..........check
Room for extra field party..........check
Suitable for bush surveys..........check
Suitable for invasion of Poland..........check
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#38
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Yes...all so impressive.... The elephant in the room though is the equally impressive price tag.. :omg:
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#39
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I must say I find those great big hulking vehicles pretty horrendous myself!

What is the appeal.... just lots of space?
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#40
snowdude

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Well us big 4WD drivers like them for the tons of room they have inside them, they look mean and the main fact they will go almost anywhere.
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