Re: Turbo squeel

On 2006-01-26, Badger <[email protected]> wrote:

> Hmmm... Pinzgauer's we had were not Golf engined, but they were a vw sourced
> 5-cylinder diesel, I'm sure.

Correct, me quoting someone else's mistake I'm afraid. From the
pinzgauer UK website;

"The new 5-cylinder 2.5 litre Volkswagen engine developed for the
Pinzgauer"

> My bmw 330d had a bit of whine from the turbo occasionally, mainly in cold
> weather so I suspected some sort of resonance issue based on air density
> change. Was never loud enough to bother me and it always went fine, so
> ignored it!

I'm a little concerned now, I can hear the turbo spooling up in all my
cars (apart from the plastic rocket, the turbo in that's not moved in
3 years unless I trip over the box) but don't know what a bad whine
sounds like.

--
Blast off and strike the evil Bydo empire!

On 2006-01-26, beamendsltd <[email protected]> wrote:

> Rather like the sound a wave makes when going back down a shingle
> beach - but constant... and loud! It sounds exactly like a
> supercharger on a large Sulzer diesel engine (e.g. BR Class 47).
> The Garret turbos on LR's might make a slight "whine" in normal
> operation, but it shouldn't describable as noisy.

Hmm, I think I know what you're talking about now. The Garret on the
plastic rocket made a noise that sounds like you've just described,
the mechanic who was doing the service didn't spot it for what it was
and told me the car was ready, bugger all power and a dreadful din
coming quite unmistakably from the turbo and not the recirculating
dump valve he'd blamed.. A quick removal of the exhaust from the
turbo and a peek with a mirror spotted a big gap in the vanes, £300
sorted it out. I didn't take it back to that mechanic again despite
him having worked on the model for about 25 years.

I'm surprised by the number of people who can't hear normal turbo
whine, it's quite clear to me on all my cars, even the landy.

--
Blast off and strike the evil Bydo empire!

>>my 200Tdi has had turbo wine

I used to drink that - lethal stuff.

On or around Thu, 26 Jan 2006 15:00:45 +0000, Ian Rawlings
<[email protected]> enlightened us thusly:

>On 2006-01-26, Badger <[email protected]> wrote:
>
>> Hmmm... Pinzgauer's we had were not Golf engined, but they were a vw sourced
>> 5-cylinder diesel, I'm sure.
>
>Correct, me quoting someone else's mistake I'm afraid. From the
>pinzgauer UK website;
>
>"The new 5-cylinder 2.5 litre Volkswagen engine developed for the
>Pinzgauer"

ain't that the same engine as the new VW vans?

though it may of course have been developed for the pinzgauer, for all I
know...

--
Austin Shackles. www.ddol-las.net my opinions are just that
"Pereant qui ante nos nostra dixerunt"
(confound the men who have made our remarks before us.)
Aelius Donatus (4th Cent.) [St. Jerome, Commentary on Ecclesiastes]

On or around Thu, 26 Jan 2006 14:09:48 +0000 (UTC), "Badger"
<[email protected]> enlightened us thusly:

>
>Yebbut you could power the whole shebang with one of the finest powerplants
>ever produced (IMO), a napier deltic! What a sound, what a rush! The only
>diesel ever made that is as plesent to listen to as a V8 petrol lump! ;-)

yeah, amazing engine. The Cunning Germans did much work with high-speed
high-output diesel engines for aeroplanes during the war - something to do
with not enough high-octane fuel. The Junkers Jumo was an inverted-V
2-stroke diesel, IIRC.

I read somewhere that the Deltic was derived from german research
originally. could be wrong though.

--
Austin Shackles. www.ddol-las.net my opinions are just that
"Nessun maggior dolore che ricordarsi del tempo felice nella miseria"
- Dante Alighieri (1265 - 1321) from Divina Commedia 'Inferno'

On Thu, 26 Jan 2006 10:16:11 +0000, Austin Shackles
<[email protected]> scribbled the following nonsense:

>On or around Thu, 26 Jan 2006 08:22:12 +0200, fanie
><[email protected]> enlightened us thusly:
>
>>ON that topic, what it your switching off proceedure. I have a 300tdi
>>and I try to religeously run it for at least a few seconds (10-20) if
>>I have just puttered into a parking, but if I have been going some and
>>don't have much slow down room, like coming off a freeway into a
>>garage, then I usually let it run for a good minute or so.
>>
>>I know most salespeople when selling a turbodiesel will tell you that
>>running your turbo down is old school and you don't need to do that on
>>a modern car. I think that is a load of kak.
>>
>
>I'm inclined to agree - but I reckon a minute is probably overcooking it.
>driving up at high revs and turning off leaves the turbo still spinning and
>the pressure oil feed not working any more, which is the argument against
>it. But I doubt the turbo spins at high speed for more than 10 seconds or
>so after coming back to idle, if that.
>
>Ages ago, Commer made some 2-stroke diesel engines (and Foden, I think, but
>the comment pertains to the Commer) for lorries. In those days lorry
>engines were such as the 5LW Gardner and the AEC 690 which were flat out at
>about 2500 revs and normally pulled about 1800 or less, and had huge
>capacity cooling systems to cope with an engine that wasn't prone to
>overheat.
>
>The Commer was much faster running and hotter than the typical engine of the
>day and quite a number got broken 'cos people were getting it hot running at
>at speed and then pulling up and switching off. The coolant then stopped
>circulating and uneven colling warped or cracked the heads. If left to idle
>for a few minutes to cool down, they were fine.
>
>hens-teeth territory now. I did see a (preserved) 2-stroke Foden on the
>road a year or so ago, makes a marvellous noise, but not in the same class
>as a "Deltic".
>
>If you google, theres a very anoraky site with recorded train noises
>including Deltics.

http://www.softbass.freeserve.co.uk/dps.htm

found it ages ago when we had the big discussion about Deltics last
year, have one engine sound downloaded as an mp3, and quite often play
it through the Interactive Whiteboard, seems to shut the kids up! The
Deltic and one other large engine send a strange feeling through me
when I hear them. t'other engine existed before WW2, but was produced
in huge numbers during it. Living in Lincolnshire I quite often hear
6 of them coming at us!
--

Simon Isaacs

Peterborough 4x4 Club Newsletter Editor and Webmaster
Green Lane Association (GLASS) Financial Director
101 Ambi, undergoing camper conversion www.simoni.co.uk
1976 S3 LWT, Fully restored, ready for sale! Make me an offer!
Suzuki SJ410 (Wife's) 3" lift kit fitted, body shell now restored and mounted on chassis, waiting on a windscreen and MOT
Series 3 88" Rolling chassis...what to do next
1993 200 TDi Discovery
1994 200 TDi Discovery body sheel, being bobbed and modded.....

....and Austin Shackles spake unto the tribes of Usenet, saying...

> If you google, theres a very anoraky site with recorded train noises
> including Deltics.

Thanks Austin - that wasted a whole hour when I should have been working.

http://www.steamsounds.org.uk/0512.html - first "play" button.

I have often travelled from that very station (York). The sounds brought
LOADS of memories to the backs of my eyes, which went all watery as a
result. And I'm not even a train fan.


--
Rich
==============================

Time flies like an arrow. Fruit flies like a banana.

On or around Thu, 26 Jan 2006 19:51:25 +0000 (UTC), Simon Isaacs
<[email protected]> enlightened us thusly:

>
>http://www.softbass.freeserve.co.uk/dps.htm
>
>found it ages ago when we had the big discussion about Deltics last
>year, have one engine sound downloaded as an mp3, and quite often play
>it through the Interactive Whiteboard, seems to shut the kids up! The
>Deltic and one other large engine send a strange feeling through me
>when I hear them. t'other engine existed before WW2, but was produced
>in huge numbers during it. Living in Lincolnshire I quite often hear
>6 of them coming at us!

not the same thing but a lovely demonstration of doppler effect:

http://my.ohio.voyager.net/~colemanc/Bin/Sounds/Diesel/atsf3829.wav
--
Austin Shackles. www.ddol-las.net my opinions are just that
"Pereant qui ante nos nostra dixerunt"
(confound the men who have made our remarks before us.)
Aelius Donatus (4th Cent.) [St. Jerome, Commentary on Ecclesiastes]