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Marcin
Alfa Sprint
Joined: 13 Mar 2003
Posts: 117
Location: Amsterdam
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 Posted: Wed Jun 18, 2003 4:05 pm Post subject: valve stem seals replacement |
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Hi,
in the post about the smoke from the exhaust (scroll down the forum) one of you (a guest) mentioned that it's possible to replace the valve stem seals without removing the heads. Has anyone done it before? Could you give me some details how to get the seal out and back in, and what are other unusual things to take care of?
Thanks
Marcin |
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Gary UK
Alfa Sprint
Joined: 17 Mar 2003
Posts: 218
Location: Darlington UK
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| Posted: Thu Jun 19, 2003 1:51 pm Post subject: |
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| I have replaced VSS on a Citroen with the head still on but I fabricated a spring compressor from an old one and that required welding (as you cant get under the head as usual to 'push' against the valve heads). The valve top was held with pliers as the spring was compressed. Then just cut off the old ones relaced the new one's, the trickiest bit was fitting the collets as the valve had to be pulled up with snipe nose pliers as the spring was compressed down. |
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Admin
Site Admin
Joined: 19 Feb 2003
Posts: 1223
Location: Stafford, UK
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| Posted: Fri Jun 20, 2003 12:08 am Post subject: |
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Hi
I think the "professional" way to do it is using an adaptor for the spark plug hole to fill the cylinder with very high preasure air to hold the valve closed so that you can then compress the springs and remove the collets.
Not sure I would trust my compressor for that 
All the best
Keith |
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Gary UK
Alfa Sprint
Joined: 17 Mar 2003
Posts: 218
Location: Darlington UK
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| Posted: Fri Jun 20, 2003 1:08 am Post subject: |
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You saying my 'bodge-it-and-wreck-it' technology ain't proffesional like Keith  They don't call me captain Cataloy for nothing you know er infact they don't!!  |
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Admin
Site Admin
Joined: 19 Feb 2003
Posts: 1223
Location: Stafford, UK
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| Posted: Mon Jun 23, 2003 12:53 pm Post subject: |
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Nah, the bodgeit way is to shove some rope through the plug hole into the cylinder and hope that holds the valve in place 
All the best
Keith |
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Marcin
Alfa Sprint
Joined: 13 Mar 2003
Posts: 117
Location: Amsterdam
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| Posted: Wed Jun 25, 2003 12:32 pm Post subject: |
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Yeah, probably that's the best way to do it. But what about turning the cranckshaft so, that the cilinder supports the valve? Will it end up with replacing the valves as well?
Marcin |
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Gary UK
Alfa Sprint
Joined: 17 Mar 2003
Posts: 218
Location: Darlington UK
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| Posted: Wed Jun 25, 2003 5:55 pm Post subject: |
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| That will help but to actually remove the collets the valve must be fully closed |
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