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 Valve Stem Seals 
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Firing on two.

Joined: February 27th, 2009, 11:56 pm
Posts: 105
Post Valve Stem Seals
I'm about to replace the valve stem seals ( I first asked about this a couple of years ago! Still haven't done it!)

In this youtube video. Why is the guy putting PTF tape around the valve stem? And does it really take that much hammering to get it in place? He's taken the spring collar off before installing. Is this the correct way to do it?
thanks for comments.


https://www.youtube.com/watch?v=IEkl3M3H74g


February 14th, 2017, 10:25 pm
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Firing on two.
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Joined: June 19th, 2010, 8:40 pm
Posts: 761
Location: Kingswood, S.Glos.
Post Re: Valve Stem Seals
The PTFE tape is to protect the lip of the seal as it passes the groove for the collets.

Seems a bit of a ballache to get the tape off afterwards.

I thought the seals from ECAS used to come with a sleeve to perform the same function, but that maybe a 'false' memory.

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February 14th, 2017, 11:49 pm
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Firing on two.

Joined: February 27th, 2009, 11:56 pm
Posts: 105
Post Re: Valve Stem Seals
Thanks Knightley. Obvious when someone pints it out to you!


February 15th, 2017, 1:04 am
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Firing on two.

Joined: February 21st, 2012, 9:01 pm
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Location: Avranches, Sud Manche, France
Post Re: Valve Stem Seals
Think when I did it, I put oil on the seal and the valve ( without PTFE) and yes they need to be hit to get them onto the head


February 15th, 2017, 2:30 pm
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Agony Aunt - You have a car problem? Speak to Ken

Joined: March 6th, 2009, 1:40 am
Posts: 3675
Post Re: Valve Stem Seals
Oh no, they don't... ;)
An M10 or M11 deep socket, depending on make, will do the job with a firm, steady push.
Also there's really no need to @rse around removing and refitting that little spring on each seal.

p.s. Knightley's memory is fine, 'fitting sleeves' always used to be included with every seal kit and it was worth keeping hold of them for use with those kits which don't have them.


ChrisW wrote:
Think when I did it, I put oil on the seal and the valve ( without PTFE) and yes they need to be hit to get them onto the head

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February 15th, 2017, 4:33 pm
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Firing on two.

Joined: February 27th, 2009, 11:56 pm
Posts: 105
Post Re: Valve Stem Seals
Merci Beaucoup a tous!

Ken, I thought the guy was making more of it! my preliminary investigations led me to believe that it wasn't going to be quite a "push fit" but not the amount of hammerwork the guy in the video was doing, but if there was a laod of PTF tape perhaps it need more whacking 'cos it all got puckered up!


February 16th, 2017, 9:45 am
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