I had head on my AH 3000 done recently and the engine shop highly
recommended the "top hat" style valve seals. If you are doing the head
yourself I would suggest taking a valve and the valve springs to a good
engine shop and they will be able to size the "top seal" and source them for
you.
Harold
-----Original Message-----
From: Healeys [mailto:healeys-bounces@autox.team.net] On Behalf Of Bob
Spidell
Sent: Sunday, February 21, 2021 9:17 AM
To: healeys@autox.team.net
Subject: Re: [Healeys] 100/4 / A90 old style valve seals
Most mechanics favor modern 'top hat' style seals--I think they're one
piece--unless, of course, Concours Gold requires blue smoke from the
tailpipe.
By no means let crumbling rubber parts see the inside of an engine.
Bob
On 2/20/2021 9:28 PM, Alan Seigrist via Healeys wrote:
> All -
>
> On my A90 I am lapping one of the exhaust valves and this seal came
> off the upper part of the valve guide.
>
> It seems this is an original style valve seal shroud which no one
> sells. I assume the best thing is to remove it and chuck it, correct?
> It's already half disintegrated and I'm not really worried but would
> prefer to not put it back on and have old rubber parts getting into
> the oil.
>
> Am I correct to not put it back on? No one seems to sell these.
>
> Best,
>
> Alan
>
>
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