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Old 12-01-2005, 08:01   #1 (permalink)
MAB
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Dropped valve on TD5

Does anyone know anything about this?

What does it mean?

How does it happen?

I am advised by my main dealer that a replacement engine is needed and
the cost is 4700.00.

They say it is beyond econimical repair.

T reg 108K


Any help or advice please?

MAB

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Old 12-01-2005, 10:01   #2 (permalink)
Marc Draper
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Re: Dropped valve on TD5

In message <1133451610.091768.42190@g14g2000cwa.googlegroups.com>, MAB
<mabscout@hotmail.com> writes
>Does anyone know anything about this?
>
>What does it mean?
>
>How does it happen?
>
>I am advised by my main dealer that a replacement engine is needed and
>the cost is 4700.00.
>
>They say it is beyond econimical repair.
>
>T reg 108K
>
>
>Any help or advice please?
>
>MAB
>



It means that a valve has dropped out of the cylinder head on to the top
of the piston. It could be just the head of the valve or the whole valve
and valve seat.

Chances are the solid lump of valve would have done a lot of damage next
time the piston came up to TDC. Damage would have been to both piston
and head and very possibly the bore as well.

Your main dealer does not have the facilities or the ability to repair
such damage but there is a possibility that an engine remanufacturer
would be able to save the bare bones of your engine.

Given the mileage it is probably best to follow their advice and go for
a new one.

Better still get to a good independent specialist and save a few quid
that way.

Good luck.
--
Marc Draper
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Old 12-01-2005, 10:02   #3 (permalink)
Lee_D
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Re: Dropped valve on TD5

Marc Draper <marc@mdeng.demon.co.uk> uttered summat worrerz funny about:

> Given the mileage it is probably best to follow their advice and go
> for a new one.
>
> Better still get to a good independent specialist and save a few quid
> that way.
>
> Good luck.


Plenty of accident damaged motors around to provide a donor engine.

I wouldn't go the main dealer route unless money is no object and your
trying to burn some otherwise taxable funds.

Lee D


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Old 12-01-2005, 14:01   #4 (permalink)
David G. Bell
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Re: Dropped valve on TD5

On 1 Dec, in article
<1133451610.091768.42190@g14g2000cwa.googlegroups.com>
mabscout@hotmail.com "MAB" wrote:

> Does anyone know anything about this?
>
> What does it mean?
>
> How does it happen?
>
> I am advised by my main dealer that a replacement engine is needed and
> the cost is 4700.00.
>
> They say it is beyond econimical repair.
>
> T reg 108K


Simply, one of the valve-stems broke and a chunk of metal dropped into
the cylinder

--
David G. Bell -- SF Fan, Filker, and Punslinger.

"I am Number Two," said Penfold. "You are Number Six."
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Old 12-01-2005, 17:01   #5 (permalink)
PDannyD
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Re: Dropped valve on TD5

On Thursday 01 December 2005 15:40, MAB [mabscout@hotmail.com] wrote in
message <1133451610.091768.42190@g14g2000cwa.googlegroups.com>

> Does anyone know anything about this?


My Suzuki GS125 dropped an exhaust valve while doing 60mph at over
10,000rpm.

brrrrrrrrrr-BANG-BZZZZZZZZZZZZZZZZzzzzzzzzzzzzzzzzzzzz-clinkclinkclink-bugger!

> What does it mean?


It means one of the valves has fallen apart and dropped into the combustion
chamber. Because the bits of valve are not generally compressible this
tends to leave your engine looking like a manic gremlin armed with a
jackhammer has tried to get out.

> How does it happen?


Usually over-revving, running too lean and therefore too hot or a
combination of the two. Sometimes valves just feel like falling apart.

My motorbike engine fell apart because I was over-revving and the exhaust
baffles had been gradually rotting out which meant the exhaust was
breathing more and more freely which meant the engine was running more and
more lean. Engines generally run hot when they run lean.

> I am advised by my main dealer that a replacement engine is needed and
> the cost is 4700.00.


That's steep. Maybe that's the price for a brand new engine but I'd be
surprised if you can't find something for a 10th of the price.

> They say it is beyond econimical repair.


Maybe for them. Have you tried getting a quote from a specialist engine
rebuilder?

I guess the crank is ok and if the conrod isn't bent you just need a new
head, new piston and either a rebore or have the piston relined and
machined to fit the new piston.

Either way, it's a specialist job.

Look for a good 2nd hand engine of the same type or maybe try a different of
engine. I hear nothing but good thing about Daihatsu 2.8 engines.

Whatever you do, the first thing you should do is find out exactly *WHY* the
engine went bang. If the problem is solely in the exhaust then your new
engine will experience the same problem.

--
S3 SWB Petrol Hard-top
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Old 12-01-2005, 21:01   #6 (permalink)
EMB
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Re: Dropped valve on TD5

PDannyD wrote:
> On Thursday 01 December 2005 15:40, MAB [mabscout@hotmail.com] wrote in
> message <1133451610.091768.42190@g14g2000cwa.googlegroups.com>
>
>>I am advised by my main dealer that a replacement engine is needed and
>>the cost is 4700.00.

>
>
> That's steep. Maybe that's the price for a brand new engine but I'd be
> surprised if you can't find something for a 10th of the price.


Given that the reasonably priced Mr Beamends wants 2800 quid for a td5
short engine, that's not totally outrageous when you take removal,
reconditioning the head, assembling, and refitting into account.


--
EMB
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Old 12-02-2005, 06:01   #7 (permalink)
Huw
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Re: Dropped valve on TD5

EMB wrote:
> PDannyD wrote:
>> On Thursday 01 December 2005 15:40, MAB [mabscout@hotmail.com] wrote
>> in message <1133451610.091768.42190@g14g2000cwa.googlegroups.com>
>>
>>> I am advised by my main dealer that a replacement engine is needed
>>> and the cost is 4700.00.

>>
>>
>> That's steep. Maybe that's the price for a brand new engine but I'd
>> be surprised if you can't find something for a 10th of the price.

>
> Given that the reasonably priced Mr Beamends wants 2800 quid for a td5
> short engine, that's not totally outrageous when you take removal,
> reconditioning the head, assembling, and refitting into account.


What are the chances of the head being good enough to recondition?

Huw


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Old 12-02-2005, 07:01   #8 (permalink)
Austin Shackles
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Re: Dropped valve on TD5

On or around Fri, 02 Dec 2005 17:54:52 +1300, EMB <embtwo@gmail.com>
enlightened us thusly:

>PDannyD wrote:
>> On Thursday 01 December 2005 15:40, MAB [mabscout@hotmail.com] wrote in
>> message <1133451610.091768.42190@g14g2000cwa.googlegroups.com>
>>
>>>I am advised by my main dealer that a replacement engine is needed and
>>>the cost is 4700.00.

>>
>>
>> That's steep. Maybe that's the price for a brand new engine but I'd be
>> surprised if you can't find something for a 10th of the price.

>
>Given that the reasonably priced Mr Beamends wants 2800 quid for a td5
>short engine, that's not totally outrageous when you take removal,
>reconditioning the head, assembling, and refitting into account.


I could quite believe a complete new engine ex-works at 4700.

However, I bet you can get a s/h one from a breaker for a fifth of that, if
you look around. 'course, the main dealers aren't interested in looking for
a s/h engine...
--
Austin Shackles. www.ddol-las.net my opinions are just that
"Quos deus vult perdere, prius dementat" Euripedes, quoted in
Boswell's "Johnson".
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Old 12-02-2005, 11:01   #9 (permalink)
PDannyD
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Re: Dropped valve on TD5

On Friday 02 December 2005 04:54, EMB [embtwo@gmail.com] wrote in message
<dmok2g$qad$1@lust.ihug.co.nz>

> PDannyD wrote:
>> On Thursday 01 December 2005 15:40, MAB [mabscout@hotmail.com] wrote in
>> message <1133451610.091768.42190@g14g2000cwa.googlegroups.com>
>>
>>>I am advised by my main dealer that a replacement engine is needed and
>>>the cost is 4700.00.

>>
>>
>> That's steep. Maybe that's the price for a brand new engine but I'd be
>> surprised if you can't find something for a 10th of the price.

>
> Given that the reasonably priced Mr Beamends wants 2800 quid for a td5
> short engine, that's not totally outrageous when you take removal,
> reconditioning the head, assembling, and refitting into account.


Ok, "a 10th" was a bit of an exaggeration due to trying out Glen Orrin
whisky from Aldi (a blended malt, much cheapness!) but for 4700 I'd expect
it to be a brand new or just run-in engine fitted and tuned and insured "as
new".

--
S3 SWB Petrol Hard-top
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Old 12-02-2005, 11:01   #10 (permalink)
Tim Hobbs
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Re: Dropped valve on TD5


>Ok, "a 10th" was a bit of an exaggeration due to trying out Glen Orrin
>whisky from Aldi (a blended malt, much cheapness!) but for 4700 I'd expect
>it to be a brand new or just run-in engine fitted and tuned and insured "as
>new".


That's probably what they are quoting. At main dealer rates I'd want
a new long engine dropped in rather than spend 80 an hour building up
a second-hand one from cheaper parts. Especially given the likelihood
of the 'mechanic' actually doing it right.

If the car is otherwise good it may not be a bad investment, but a
specialist will be able to fit the same brand new engine for
substantially less.

Was the engine properly maintained from new? That's not big mileage
when considered against the sort of distances the 300 and old V8 are
routinely capable of.



--
Tim Hobbs
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