Head gasket removal- timing chain question

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Head gasket removal- timing chain question

Postby GTAlex82 » Wed Nov 28, 2007 10:26 am

Hi Guys
In order to preserve the valve timing when taking the heads off the mechnaics manual suggests using a little specialised tool to hold the chain. Do you tend to buy this part, or fabricate your own, or do you have a diferent way of doing it?
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Postby clee » Wed Nov 28, 2007 10:41 am

Secure the chain to the cam sprocket with a couple of cable ties .As long as you make sure the crank doesn't move it should be OK .But mark the chain and sprocket in any case .
Are you doing both heads ? In the car or out ?
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Postby GTAlex82 » Wed Nov 28, 2007 12:44 pm

Im doing both with the engine in situ. Theres some damage to the spacers and rocker gaskets so it seems like a good opportunity to renew the lot at the same time, plus do some other little jobs. Thanks for the idea, saves making up a part!!
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Postby GTAlex82 » Wed Nov 28, 2007 12:45 pm

By the way the black wheel/light centre cap combo looks rather tasty.
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Postby Stunned Monkey » Wed Nov 28, 2007 2:13 pm

If you can get onto the crank pulley with an air gun and remove the pulley, my advice (and the advice I was given many moons ago) is to just remove the timing cover. It really isn't difficult and makes the whole head removal a lot easier.

The reason to hold tension in the timing chains is to stop the tensioners ratcheting out - this is really important. Any release in tension from the chain and then you'll HAVE to remove the timing cover, so you can use a little flat screwdriver to reset the tensioner(s)

BTW I highly recomment not using rocker or tinign gover gaskets. Just use a good silicone sealant on a clean oil free surface.
Martin - PRV Tinkerererer
www.delorean.co.uk
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Postby David Gentleman » Wed Nov 28, 2007 2:17 pm

.. :? just be wary that none of that sealant gets into the engine and through the oil pump as Phildini found... :oops:
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Postby Stunned Monkey » Wed Nov 28, 2007 2:19 pm

note that on the late 3 litre engines, this is exactly how they were assembled at the factory. And of course, use sparingly!
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Postby David Gentleman » Wed Nov 28, 2007 2:30 pm

Stunned Monkey wrote:note that on the late 3 litre engines, this is exactly how they were assembled at the factory. And of course, use sparingly!


Yes but production line engines won't be filled with oil and put in a car and run till a decent while after they are fully built. Some one doing the timing cover on its own, could plonk it on, fill the car up and run it a short while after..

Just pre-warning... :wink:
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Postby Stunned Monkey » Wed Nov 28, 2007 2:45 pm

Okay how about "I've seen leaky gaskets on numerous occasions and seen lots or problems with both original and "new" gaskets. Since using just silicone, I've never had a problem." ?
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Postby David Gentleman » Wed Nov 28, 2007 3:33 pm

Stunned Monkey wrote:Okay how about "I've seen leaky gaskets on numerous occasions and seen lots or problems with both original and "new" gaskets. Since using just silicone, I've never had a problem." ?


I would say 'Im glad Im not the person here recommending people don't use gaskets...' :lol:
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Postby clee » Wed Nov 28, 2007 3:36 pm

If you're doing both then try and get the crank pulley off and remove the cover .Sometime they come off easy :shock:
As for the silicon.............. I've got one with and one with a gasket :lol:
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Postby David Gentleman » Wed Nov 28, 2007 4:36 pm

clee wrote:If you're doing both then try and get the crank pulley off and remove the cover .Sometime they come off easy :shock:
As for the silicon.............. I've got one with and one with a gasket :lol:


Now if you had been sensible you should have cut the gasket in half and put half on one side, half on the other.. :lol:
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Postby BIG_MVS » Wed Nov 28, 2007 4:39 pm

David Gentleman wrote:
clee wrote:If you're doing both then try and get the crank pulley off and remove the cover .Sometime they come off easy :shock:
As for the silicon.............. I've got one with and one with a gasket :lol:


Now if you had been sensible you should have cut the gasket in half and put half on one side, half on the other.. :lol:


Or like someone I know use an old cardboard Fosters Lager box :roll: :lol: :shock:
1994 A610 - Montana Red (For Sale)
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Postby David Gentleman » Wed Nov 28, 2007 4:46 pm

BIG_MVS wrote:
David Gentleman wrote:
clee wrote:If you're doing both then try and get the crank pulley off and remove the cover .Sometime they come off easy :shock:
As for the silicon.............. I've got one with and one with a gasket :lol:


Now if you had been sensible you should have cut the gasket in half and put half on one side, half on the other.. :lol:


Or like someone I know use an old cardboard Fosters Lager box :roll: :lol: :shock:


If you cut the plastic holder that keeps a 6 pack together in half, you can use it for a head gasket :wink: :lol: 8)
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Postby Stunned Monkey » Wed Nov 28, 2007 5:02 pm

BIG_MVS wrote:
Or like someone I know use an old cardboard Fosters Lager box :roll: :lol: :shock:


Did that on an intake manifold once, worked a charm. You should grease up the cardboard first though And seeing as the owner of said car is probably lurking, you know who you are! (this was a temporary measure that worked so well it stayed there for years, with the full knowledge of the owner!)

...but it was Carling, not Fosters.
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