[Healeys] 100/4 / A90 old style valve seals

[john harper]

Alan

I am not sure that I understand 'original'?

Most A90 Atlantic had single valve springs as does the early 100.
Double valve springs could be fitted to an A90 and some owners have done
so. The double types had different locator rings next to the head and at
the top more fitting to locate the double springs. The top oil seal was
located differently. There was very little in common between the single and
double spring setups. I would suggest fitting the double version because it
was supposed to eliminate valve bounce.

What I guess that what you are seeing is a non-stangard extra seal;
possibly to reduce oil being burnt that gets down worn guides. I have seen
firms selling these to reduce oil consumption.

On Sun, 21 Feb 2021 at 05:31, Alan Seigrist via Healeys <
healeys at autox.team.net> 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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