Hi Folks !

to Austin and the usual engine enthusist crew..my Disco SD1 3.5 has a
clunk
when slight engine load is first applied and then dies off (only due
to the
revs on the engine I'm guessing)...203,000 km's(126875miles)..when the
injectors
are unplugged at idle from No 4 and 6 pistons the noise is gone..my
question
is it (or can it be) the sleeve bearing on the camshaft and how big a
job..
I pulled the sump off the other day and found grinds in the bottom of
the sump..the prior owner/dealership had only silasticed the sump on
no gasket so it
always wept oil (that explains a prior post of losing 200ml/500km
trip)...

Also if someone wants a cheap MAF sensor for your old RR/Disco
checkout :
http://cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&item=2482061434&sspagename=STRK:MESE:IT&rd=1

sorry for plug but hopefully I will be able to save up for an exchange
or the
crankshaft and bearings ?

Cheers,
Greg

On or around 21 Jun 2004 20:43:24 -0700, greg_jgw@yahoo.com.au (wundermann)
enlightened us thusly:

>Hi Folks !
>
>to Austin and the usual engine enthusist crew..my Disco SD1 3.5 has a
>clunk
>when slight engine load is first applied and then dies off (only due
>to the
>revs on the engine I'm guessing)...203,000 km's(126875miles)..when the
>injectors
>are unplugged at idle from No 4 and 6 pistons the noise is gone..my
>question
>is it (or can it be) the sleeve bearing on the camshaft and how big a
>job..
>I pulled the sump off the other day and found grinds in the bottom of
>the sump..the prior owner/dealership had only silasticed the sump on
>no gasket so it
>always wept oil (that explains a prior post of losing 200ml/500km
>trip)...
>

hmm. not easy to diagnose from that, I fear. do you mean you have an
engine knock, or a single clunk? single clunk on applying drive is much
more likely to be transmission.

there seem to be many kinds of knock on V8s. I've had several which have a
slight knock on climbing long steep hills half-warm, the latest one is no
exception. I was worried the first time... beats me what does it - oil
pressure on the last 2 was good, but they all had this tendency to knock
when not fully warm. going up similar hills at full operating temperature
doesn't seem to make it knock.

tried this one on petrol as well as LPG and it appears to be the same.

--
Austin Shackles. www.ddol-las.fsnet.co.uk my opinions are just that
If all be true that I do think, There are five reasons we should drink;
Good wine, a friend, or being dry, Or lest we should be by and by;
Or any other reason why. - Henry Aldrich (1647 - 1710)

"Austin Shackles" <austin@ddol-las.fsnet.co.uk> wrote in message
news:8nkfd0lql622v5mg62d411v3f2s1nq6g8n@4ax.com...
> On or around 21 Jun 2004 20:43:24 -0700, greg_jgw@yahoo.com.au
(wundermann)
> enlightened us thusly:
>
> >Hi Folks !
> >
> >to Austin and the usual engine enthusist crew..my Disco SD1 3.5 has a
> >clunk
> >when slight engine load is first applied and then dies off (only due
> >to the
> >revs on the engine I'm guessing)...203,000 km's(126875miles)..when the
> >injectors
> >are unplugged at idle from No 4 and 6 pistons the noise is gone..my
> >question
> >is it (or can it be) the sleeve bearing on the camshaft and how big a
> >job..
> >I pulled the sump off the other day and found grinds in the bottom of
> >the sump..the prior owner/dealership had only silasticed the sump on
> >no gasket so it
> >always wept oil (that explains a prior post of losing 200ml/500km
> >trip)...
> >
>
> hmm. not easy to diagnose from that, I fear. do you mean you have an
> engine knock, or a single clunk? single clunk on applying drive is much
> more likely to be transmission.
>
> there seem to be many kinds of knock on V8s. I've had several which have
a
> slight knock on climbing long steep hills half-warm, the latest one is no
> exception. I was worried the first time... beats me what does it - oil
> pressure on the last 2 was good, but they all had this tendency to knock
> when not fully warm. going up similar hills at full operating temperature
> doesn't seem to make it knock.
>
> tried this one on petrol as well as LPG and it appears to be the same.
>
More than likely a touch of piston slap until everything is fully up to temp
and expanded. I'd be more interested in the metal in the sump, though. Time
to check the crank shells, I fear.
Badger
B.H.Engineering
Rover V8 Engine Builders

On or around Tue, 22 Jun 2004 18:04:03 +0100, "Badger"
<badger@spammersgospamoff.badger-co.freeserve.co.uk> enlightened us thusly:

>
>"Austin Shackles" <austin@ddol-las.fsnet.co.uk> wrote in message
>news:8nkfd0lql622v5mg62d411v3f2s1nq6g8n@4ax.com...
>> slight knock on climbing long steep hills half-warm, the latest one is no
>> exception. I was worried the first time... beats me what does it - oil
>> pressure on the last 2 was good, but they all had this tendency to knock
>> when not fully warm. going up similar hills at full operating temperature
>> doesn't seem to make it knock.
>>
>> tried this one on petrol as well as LPG and it appears to be the same.
>>
>More than likely a touch of piston slap until everything is fully up to temp
>and expanded. I'd be more interested in the metal in the sump, though. Time
>to check the crank shells, I fear.
>Badger
>B.H.Engineering
>Rover V8 Engine Builders

mine's not got metal in the sump, luckily.

seems a good 'un, in fact, so far.


--
Austin Shackles. www.ddol-las.fsnet.co.uk my opinions are just that
"Quos deus vult perdere, prius dementat" Euripedes, quoted in
Boswell's "Johnson".

This is an engine tick..bores looked clean from underneath and I
replaced the
head gaskets..about 6 months ago..valves etc looked ok...timing chain
replaced
and that is about it..is it worth taking the rocker cover off..and
look while
engine idling or will I be sprayed with oil..RH side 2,4,6,8...as
already mentioned when 4 and 6 have no compression the noise is
gone..feathering the accelerator (while in neutral) will increase the
noise then it will subside..but it will come back straight away at
500-1000rpm rev range..sounds
like crankshaft bearing between 4 and 6 to me..low end sound not
top-end..
driving as though it is on 7 cylinders..up hill no guts..revs and road
speed drop like a stone..anyway this is just for summising a cause..I
will be transplanting a low k engine when my tax comes in

Thanks folks,
Greg

"Badger" <badger@spammersgospamoff.badger-co.freeserve.co.uk> wrote in message news:<cb9oib$9md$1@newsg1.svr.pol.co.uk>...
> "Austin Shackles" <austin@ddol-las.fsnet.co.uk> wrote in message
> news:8nkfd0lql622v5mg62d411v3f2s1nq6g8n@4ax.com...
> > On or around 21 Jun 2004 20:43:24 -0700, greg_jgw@yahoo.com.au
> (wundermann)
> > enlightened us thusly:
> >
> > >Hi Folks !
> > >
> > >to Austin and the usual engine enthusist crew..my Disco SD1 3.5 has a
> > >clunk
> > >when slight engine load is first applied and then dies off (only due
> > >to the
> > >revs on the engine I'm guessing)...203,000 km's(126875miles)..when the
> > >injectors
> > >are unplugged at idle from No 4 and 6 pistons the noise is gone..my
> > >question
> > >is it (or can it be) the sleeve bearing on the camshaft and how big a
> > >job..
> > >I pulled the sump off the other day and found grinds in the bottom of
> > >the sump..the prior owner/dealership had only silasticed the sump on
> > >no gasket so it
> > >always wept oil (that explains a prior post of losing 200ml/500km
> > >trip)...
> > >
> >
> > hmm. not easy to diagnose from that, I fear. do you mean you have an
> > engine knock, or a single clunk? single clunk on applying drive is much
> > more likely to be transmission.
> >
> > there seem to be many kinds of knock on V8s. I've had several which have
> a
> > slight knock on climbing long steep hills half-warm, the latest one is no
> > exception. I was worried the first time... beats me what does it - oil
> > pressure on the last 2 was good, but they all had this tendency to knock
> > when not fully warm. going up similar hills at full operating temperature
> > doesn't seem to make it knock.
> >
> > tried this one on petrol as well as LPG and it appears to be the same.
> >
> More than likely a touch of piston slap until everything is fully up to temp
> and expanded. I'd be more interested in the metal in the sump, though. Time
> to check the crank shells, I fear.
> Badger
> B.H.Engineering
> Rover V8 Engine Builders

On or around 22 Jun 2004 17:36:19 -0700, greg_jgw@yahoo.com.au (wundermann)
enlightened us thusly:

>This is an engine tick..bores looked clean from underneath and I
>replaced the
>head gaskets..about 6 months ago..valves etc looked ok...timing chain
>replaced
>and that is about it..is it worth taking the rocker cover off..and
>look while
>engine idling or will I be sprayed with oil..

you can do this if you want. 's fascinating - the pushrods spin while it's
running, all at different speeds on the one I was looking at, including one
that didn't which is wrong. Meanwhile...


>RH side 2,4,6,8...as
>already mentioned when 4 and 6 have no compression the noise is
>gone..feathering the accelerator (while in neutral) will increase the
>noise then it will subside..but it will come back straight away at
>500-1000rpm rev range..sounds

you haven't got no compression by pulling the injectors, just no firing. As
I'm sure you know

however, this does sound a bit like bearing problems, from the details
given, or maybe a badly worn piston.

--
Austin Shackles. www.ddol-las.fsnet.co.uk my opinions are just that
Appearances: You don't really need make-up. Celebrate your authentic
face by frightening people in the street.
from the Little Book of Complete B***ocks by Alistair Beaton.