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#499364 - 8th Apr 2011 12:48pm Valve oil stem seals - rope trick
diggingdeeper Offline

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Registered: 9th Jul 2008
Posts: 9782
Loc: Birkenhead
Has anyone done the rope trick to change the valve stem oil seals?

I want to change the oil seals but don't want to take the cylinder head off at the moment - yes, I'm in denial, I don't want to know what lurks inside - that can wait until the weather is a bit more reliable.

Any recommends on the rope to use, proper white cord or blue/orange poly stuff???

Rope trick - piston to bottom - feed [2m of 6mm ????] rope into cylinder through spark plug hole - turn engine to compress rope which will hold the valves up. Then use a topside spring compressor to remove spring and change the seals.

Alternatively there is the compressed air method - which I don't fancy, if something goes wrong the valves will drop - I prefer the idea of something physical being in the way to support them.

I need to check first to see that the springs aren't too deep-seated to get a topside spring comressor in, but I think there is.


Edited by diggingdeeper (8th Apr 2011 12:48pm)
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#499403 - 8th Apr 2011 2:17pm Re: Valve oil stem seals - rope trick [Re: diggingdeeper]
chris_gilly Offline

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Registered: 15th Feb 2009
Posts: 1950
Loc: tranmere
take the head off for the best way, dont skimp, its easy on them!

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#499409 - 8th Apr 2011 2:35pm Re: Valve oil stem seals - rope trick [Re: chris_gilly]
_Ste_ Offline


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Registered: 7th Aug 2005
Posts: 15986
Loc: New Brighton
Originally Posted By: chris_gilly
take the head off for the best way, dont skimp, its easy on them!


withthat
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#499417 - 8th Apr 2011 2:47pm Re: Valve oil stem seals - rope trick [Re: diggingdeeper]
polo_phil Offline

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Registered: 9th Jan 2009
Posts: 3080
Loc: Birkenhead
Sounds like some oily fun! Rather you than me DD. I'm too lazy to even change a wheel these days... frown

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#499423 - 8th Apr 2011 2:52pm Re: Valve oil stem seals - rope trick [Re: chris_gilly]
diggingdeeper Offline

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Registered: 9th Jul 2008
Posts: 9782
Loc: Birkenhead
Originally Posted By: chris_gilly
take the head off for the best way, dont skimp, its easy on them!
Haven't figured out if it has dry or wet liners yet - I think its dry. If its wet liners, I guarantee the liners will move so I want to avoid this.

I will take the head off in the near future, I just want to get the smoke down to the level where the MOT station can see what car it is first wink
_________________________
In a time of universal deceit - telling the truth is a revolutionary act. George Orwell

When the debate is lost, slander becomes the tool of the loser. Socrates

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#499425 - 8th Apr 2011 2:54pm Re: Valve oil stem seals - rope trick [Re: polo_phil]
diggingdeeper Offline

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Registered: 9th Jul 2008
Posts: 9782
Loc: Birkenhead
Originally Posted By: polo_phil
Sounds like some oily fun! Rather you than me DD. I'm too lazy to even change a wheel these days... frown
I've got a couple of syringes to get rid of the big wells of oil the head holds, means I don't run out of bed linen raftl
_________________________
In a time of universal deceit - telling the truth is a revolutionary act. George Orwell

When the debate is lost, slander becomes the tool of the loser. Socrates

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#499427 - 8th Apr 2011 2:56pm Re: Valve oil stem seals - rope trick [Re: diggingdeeper]
chris_gilly Offline

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Registered: 15th Feb 2009
Posts: 1950
Loc: tranmere
what engine is it buddy?

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#499428 - 8th Apr 2011 2:56pm Re: Valve oil stem seals - rope trick [Re: diggingdeeper]
polo_phil Offline

Forum Master

Registered: 9th Jan 2009
Posts: 3080
Loc: Birkenhead
Wouldn't it be easier to drive it into the dock?

what car is it? Not your Corsa?

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#499431 - 8th Apr 2011 2:59pm Re: Valve oil stem seals - rope trick [Re: diggingdeeper]
chris_gilly Offline

Forum Addict

Registered: 15th Feb 2009
Posts: 1950
Loc: tranmere
the 1.1 is dry linered

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#499439 - 8th Apr 2011 3:02pm Re: Valve oil stem seals - rope trick [Re: diggingdeeper]
diggingdeeper Offline

Wiki Guardian

Registered: 9th Jul 2008
Posts: 9782
Loc: Birkenhead
Nah, its the peugeot, been getting stuck into it recently ....

So far ....

New Thermostat
New Radiator Fan Switch
Replaced Indicator/headlamp stalk
New Cambelt
New Rear screen washer jet
New OS Headlamp assembly
Cleaned/set spark plugs
New Exhaust flexi-gasket
New rocker cover gasket
New Rocker cover/baffle-plate spacers
Set valve gaps

Got given the wrong exhaust gasket the first time, got the right one later but was being a stubborn little get, and the gear-change linkage and anti-roll bar and other supports are totally in the way making it more than awkward.

Some toerag kicked a couple of panels and did some major keying to one side - its not too bad, panels will straighten. At the same time they slashed a BMW's tyres so I got off lucky.
_________________________
In a time of universal deceit - telling the truth is a revolutionary act. George Orwell

When the debate is lost, slander becomes the tool of the loser. Socrates

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#499441 - 8th Apr 2011 3:04pm Re: Valve oil stem seals - rope trick [Re: diggingdeeper]
polo_phil Offline

Forum Master

Registered: 9th Jan 2009
Posts: 3080
Loc: Birkenhead
Originally Posted By: diggingdeeper
Some toerag kicked a couple of panels and did some major keying to one side - its not too bad, panels will straighten. At the same time they slashed a BMW's tyres so I got off lucky.


Bas tards...

sounds like you've been busy DD

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#499445 - 8th Apr 2011 3:07pm Re: Valve oil stem seals - rope trick [Re: chris_gilly]
diggingdeeper Offline

Wiki Guardian

Registered: 9th Jul 2008
Posts: 9782
Loc: Birkenhead
Originally Posted By: chris_gilly
the 1.1 is dry linered
Not all of them - I have the TU1-H1a engine. I think the deciding factor is whether the cylinder block is alloy or cast, cast has dry-liners and alloy has wet.


Edited by diggingdeeper (8th Apr 2011 3:17pm)
Edit Reason: meant h1a
_________________________
In a time of universal deceit - telling the truth is a revolutionary act. George Orwell

When the debate is lost, slander becomes the tool of the loser. Socrates

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#499666 - 8th Apr 2011 8:33pm Re: Valve oil stem seals - rope trick [Re: diggingdeeper]
StuyMac Offline

Wiki Master

Registered: 24th Nov 2003
Posts: 12002
Loc: Wirralshire
Compressed air is safe as houses - cant rememeber the amount of times ive used that method to swap valve springs, retainers and stem seals smile
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#499677 - 8th Apr 2011 8:42pm Re: Valve oil stem seals - rope trick [Re: StuyMac]
johncon Offline

Smartchild

Registered: 17th Oct 2010
Posts: 624
Loc: bromborough
Originally Posted By: StuyMac
Compressed air is safe as houses - cant rememeber the amount of times ive used that method to swap valve springs, retainers and stem seals smile

me too so long as compressor is on to top up any leaks
oldman
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#499682 - 8th Apr 2011 8:46pm Re: Valve oil stem seals - rope trick [Re: StuyMac]
diggingdeeper Offline

Wiki Guardian

Registered: 9th Jul 2008
Posts: 9782
Loc: Birkenhead
Originally Posted By: StuyMac
Compressed air is safe as houses - cant rememeber the amount of times ive used that method to swap valve springs, retainers and stem seals smile
mmmm - I've even seen it done - but it would take a leap of faith for me to go for it, on a known good engine I might risk it, on a clapped out 20 year old unknown, I just can't bring myself to do it.

Problems I envisage ....

Compressor failure.
Eleccy failure.
Hoseline failure.
Oil that is sealing piston rings gradually getting pushed out and compressor not too happy about keeping up with air flow.
Stupid mistake by operator (I have plenty of practice with these)
Act of god (usually the case when working on cars - sometimes called sod's law)

The rope trick seems fairly idiot-proof (as long as I don't crank the engine when its holding a valve up) - unfortunately you can't do both rope and air.


Edited by diggingdeeper (8th Apr 2011 8:47pm)
_________________________
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When the debate is lost, slander becomes the tool of the loser. Socrates

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