Why do these dirty Diesels have to be so damn fast??

Why do these dirty Diesels have to be so damn fast??

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Discussion

Welshbeef

49,633 posts

200 months

Wednesday 8th February 2017
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DELETED: Comment made by a member who's account has been deleted.
Power is nothing without revs.


Actually let's take a locomotive or oil tanker they don't need many revs at all some barely do 100 rpm yet have tens of thousands of BHP so you don't need revs for power

xjay1337

15,966 posts

120 months

Wednesday 8th February 2017
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Lots of st being posted by people who mainly say

"Diesels are st" or "they make no power above 3000rpm" or "they all smoke" or "they're all slow"

without actually owning one made in the last 15 years, let alone driving one.


In out and out performance many equivalent petrols are faster. But in gear performance, in the rev ranges you mostly drive at, 30mph in 3rd, 40 in 4th, etc, a diesel will have the initial get up and go that many naturally aspirated petrols lack.

Take a 320i (non turbo) to a 320d.
In gear in the middle of the rev range the petrol is miles slower.

But it's cool to hate diesels :')

CoolHands

18,863 posts

197 months

Wednesday 8th February 2017
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They do all smoke though

Howie Feltersnatch

181 posts

158 months

Wednesday 8th February 2017
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I don't own a diesel vehicle anymore but I genuinely loved my Seat with the ASZ PD130 engine in it. For 10 years it ran like a Swiss watch albeit a rumbly one at idle, very relaxing and quiet at speed though and I've never driven one before or since that had the instant shove that engine had, to me it totally reversed everything I had ever thought about diesel engines. I just wish they still made them as I'd buy a new one in a heartbeat.

Welshbeef

49,633 posts

200 months

Wednesday 8th February 2017
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CoolHands said:
They do all smoke though
Well if they have a DPF (which isn't faulty) then no they do not at all.

CoolHands

18,863 posts

197 months

Wednesday 8th February 2017
quotequote all
Well they must all be faulty then cos it's very rare to genuinely see a diesel that doesn't smoke. My personal belief is that most of them don't work as claimed. Evidence: mine own eyes yes

Fastdruid

8,720 posts

154 months

Wednesday 8th February 2017
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Welshbeef said:


See red line starts at 5,500 rpm 535d and you can push on beyond that should you wish.
These days "rev range" is not a relevant point as many petrol now rev to the same 6k
You should get your eyes tested. That's 5400 rpm for a start.
Unless the specs as found on the internet are wrong yours revs to 5k unloaded and out of gear, 4750 in gear. Absolutely no where near 6k. I'm calling custard.

My petrol does only rev to 6.5k though. I'm almost ashamed of it.

xjay1337

15,966 posts

120 months

Wednesday 8th February 2017
quotequote all
Nanook said:
xjay1337 said:
Lots of st being posted by people who mainly say

"Diesels are st" or "they make no power above 3000rpm" or "they all smoke" or "they're all slow"

without actually owning one made in the last 15 years, let alone driving one.


In out and out performance many equivalent petrols are faster. But in gear performance, in the rev ranges you mostly drive at, 30mph in 3rd, 40 in 4th, etc, a diesel will have the initial get up and go that many naturally aspirated petrols lack.

Take a 320i (non turbo) to a 320d.
In gear in the middle of the rev range the petrol is miles slower.

But it's cool to hate diesels :')
Ah, that argument.

"If you drive your petrol car as if it was a diesel, it will be slower"

True, but pointless, if you drive a diesel car like a petrol car, well, it won't even rev that high, so it's a silly comparison.

At 2k rpm, my mates Merc E class diesel pulls better for any given road speed, than my petrol Nissan does at the same engine speed.

But mine pulls a bit better at 6000rpm.
But how often are you at 6000rpm?
How often does your average driver, even average PH member, take your car to the max?

Driving through a village at 30mph in 4th , accelerating into a national limit, most diesels will leave most things in a metaphorical cloud of smoke

That's why many people enjoy the sensation of driving a diesel, it makes for effortless driving.

Edited by xjay1337 on Wednesday 8th February 17:26

DoubleD

22,154 posts

110 months

Wednesday 8th February 2017
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CoolHands said:
Well they must all be faulty then cos it's very rare to genuinely see a diesel that doesn't smoke. My personal belief is that most of them don't work as claimed. Evidence: mine own eyes yes
Maybe you need your eyes checking for cataracts.

otolith

56,764 posts

206 months

Wednesday 8th February 2017
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If you're not very good at being in the right gear, you'll probably get away with it more of the time in a diesel. My diesel is an automatic, so it's moot anyway, but between it shifting cogs and the turbo lag, the "initial get up and go" isn't all that. Not compared with my petrol cars, anyway.

DoubleD

22,154 posts

110 months

Wednesday 8th February 2017
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So it would appear that some diesels are faster than some petrols and some petrols are faster than some diesels.

Welshbeef

49,633 posts

200 months

Wednesday 8th February 2017
quotequote all
Fastdruid said:
Welshbeef said:


See red line starts at 5,500 rpm 535d and you can push on beyond that should you wish.
These days "rev range" is not a relevant point as many petrol now rev to the same 6k
You should get your eyes tested. That's 5400 rpm for a start.
Unless the specs as found on the internet are wrong yours revs to 5k unloaded and out of gear, 4750 in gear. Absolutely no where near 6k. I'm calling custard.

My petrol does only rev to 6.5k though. I'm almost ashamed of it.
So now your calling an actual picture of a dash lies ok we will leave it there.

DoubleD

22,154 posts

110 months

Wednesday 8th February 2017
quotequote all
Welshbeef said:
Fastdruid said:
Welshbeef said:


See red line starts at 5,500 rpm 535d and you can push on beyond that should you wish.
These days "rev range" is not a relevant point as many petrol now rev to the same 6k
You should get your eyes tested. That's 5400 rpm for a start.
Unless the specs as found on the internet are wrong yours revs to 5k unloaded and out of gear, 4750 in gear. Absolutely no where near 6k. I'm calling custard.

My petrol does only rev to 6.5k though. I'm almost ashamed of it.
So now your calling an actual picture of a dash lies ok we will leave it there.
That red line starts at 5400rpm

xjay1337

15,966 posts

120 months

Wednesday 8th February 2017
quotequote all
DELETED: Comment made by a member who's account has been deleted.
I agree, but your point of what an engine is capable of in it's own right is not one which is taken by many of the posters on this thread.

You know I'm a derv head and I love it. I also appreciate and love petrol engines, but I'd be wanting something like an M3 to tempt me. The usual bunch of NA and mildly turbocharged engines which rev to 6500 are pointless in comparison to diesels.

Welshbeef

49,633 posts

200 months

Wednesday 8th February 2017
quotequote all
DoubleD said:
Welshbeef said:
Fastdruid said:
Welshbeef said:


See red line starts at 5,500 rpm 535d and you can push on beyond that should you wish.
These days "rev range" is not a relevant point as many petrol now rev to the same 6k
You should get your eyes tested. That's 5400 rpm for a start.
Unless the specs as found on the internet are wrong yours revs to 5k unloaded and out of gear, 4750 in gear. Absolutely no where near 6k. I'm calling custard.

My petrol does only rev to 6.5k though. I'm almost ashamed of it.
So now your calling an actual picture of a dash lies ok we will leave it there.
That red line starts at 5400rpm
Exactly and another poster is saying said engine will not rev beyond 4,750 yet a number of actual owners of these cars have posted here saying hey have revved to 5.5k revs. Not sure why someone who doesn't own one or run one thinks he knows better than actual owners ? Maybe a vested interest in trying to make his point but doesn't like it when examples destroy his point.

Dave Hedgehog

14,634 posts

206 months

Wednesday 8th February 2017
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Howard- said:
If your 340BHP V8 can't walk away from a 140bhp 4 cylinder diesel then I'd suggest it's broken. If it was a 330D or something then it's a fairer fight, but unless that Golf has had a fortune spent on tuning it, it won't be anywhere near as fast as your S4. They aren't quick cars. Even the 180 bhp Golf GTD has a 0-60 time of about 8 seconds - considerably slower than the S4.

Edited by Howard- on Thursday 29th September 14:25
the RS4 V8 is prone to coking, some have dynod with over 100bhp loss

Welshbeef

49,633 posts

200 months

Wednesday 8th February 2017
quotequote all
Nanook said:
Welshbeef said:
Exactly and another poster is saying said engine will not rev beyond 4,750 yet a number of actual owners of these cars have posted here saying hey have revved to 5.5k revs. Not sure why someone who doesn't own one or run one thinks he knows better than actual owners ? Maybe a vested interest in trying to make his point but doesn't like it when examples destroy his point.
Do you think the car also does 160mph because the clock goes that high?
It does more.

Are you actually suggesting an F10 535d is not able to hit its 155mph limiter? Yet as Chris Harris proved with a mere 320d 4 upon France demonstrated it was 145mph so an extra 120-130bhp somehow doesn't get it to its speed limited.

Wow. Deluded springs to mind.

DoubleD

22,154 posts

110 months

Wednesday 8th February 2017
quotequote all
Welshbeef said:
Nanook said:
Welshbeef said:
Exactly and another poster is saying said engine will not rev beyond 4,750 yet a number of actual owners of these cars have posted here saying hey have revved to 5.5k revs. Not sure why someone who doesn't own one or run one thinks he knows better than actual owners ? Maybe a vested interest in trying to make his point but doesn't like it when examples destroy his point.
Do you think the car also does 160mph because the clock goes that high?
It does more.

Are you actually suggesting an F10 535d is not able to hit its 155mph limiter? Yet as Chris Harris proved with a mere 320d 4 upon France demonstrated it was 145mph so an extra 120-130bhp somehow doesn't get it to its speed limited.

Wow. Deluded springs to mind.
Im neither pro or anti diesel.

My 2007 330d would rev to 5k rpm. Not sure why others find this so hard to accept. Im not sure about the top speed though.

Welshbeef

49,633 posts

200 months

Wednesday 8th February 2017
quotequote all
DoubleD said:
Welshbeef said:
Nanook said:
Welshbeef said:
Exactly and another poster is saying said engine will not rev beyond 4,750 yet a number of actual owners of these cars have posted here saying hey have revved to 5.5k revs. Not sure why someone who doesn't own one or run one thinks he knows better than actual owners ? Maybe a vested interest in trying to make his point but doesn't like it when examples destroy his point.
Do you think the car also does 160mph because the clock goes that high?
It does more.

Are you actually suggesting an F10 535d is not able to hit its 155mph limiter? Yet as Chris Harris proved with a mere 320d 4 upon France demonstrated it was 145mph so an extra 120-130bhp somehow doesn't get it to its speed limited.

Wow. Deluded springs to mind.
Im neither pro or anti diesel.

My 2007 330d would rev to 5k rpm. Not sure why others find this so hard to accept. Im not sure about the top speed though.
https://youtu.be/-EkaqfsNqvE

This is a you tube of a top speed run in Germany. It is a Touring which is a few mph slower than the saloon and it's x drive which also slows its max speed v single wheel drive.


So I wonder why it has 160mph? Well because it's a 313bhp sports sedan which can easily do the speed as far lesser models in the range can do it so it's beyond me why that clear diesel hater posted up such gibberish. Oh well half term is close ....

Teejay80

8 posts

156 months

Wednesday 8th February 2017
quotequote all
DELETED: Comment made by a member who's account has been deleted.
A 535d should make it to 160mph (indicated). My old R32 would make it to 165 indicated, but this was verified as 155 using GPS.

I now have a 3.0TDi, with 800Nm of torque. It's nowhere near as much fun, but you'll need to be in something pretty special to beat me away from the lights.