[Healeys] Overdrive accumulator piston with rings

[Bob Spidell]

Umm, OK. Why? LdeN--or Austin, who knows--went from metal rings to 
O-rings--$0.49/ea from MM (maybe the reason)--on the operating pistons 
for the later cars. The ones in my BJ8's OD at about 210K miles were 
somewhat flattened on the expected side, but still worked.

bs


On 6/22/2023 6:09 PM, Hank Leach wrote:
> Use metal rings-live with scores.  Hank
>
> -----------------------------------------
>
> From: "Michael Salter"
> To: "Bob Spidell"
> Cc: "healeys at autox.team.net"
> Sent: Thursday June 22 2023 11:51:58AM
> Subject: Re: [Healeys] Overdrive accumulator piston with rings
>
> Years ago I made an accumulator piston to use an O ring.
> The result was an abject failure as tiny chunks of the O ring were 
> sliced off each time it passed over the pressure relief drillings in 
> the housing.
> Any clue as to how that has been overcome?
>
> M
>
> On Thu., Jun. 22, 2023, 9:41 a.m. Bob Spidell, <bspidell at comcast.net> 
> wrote:
>
>     I have the DWM 'uprated' accumulator set; the housing has an
>     O-ring and the piston has four equally-sized metal rings. Don't
>     recall any others, but don't think it was any different than the
>     OEM one I took out.
>
>     Too late now, but had I known of it I might have bought the AH
>     Spares version with O-ring(s?) on the piston instead of metal
>     rings. The metal rings will score the accumulator bore eventually.
>
>
>
>     On 6/21/2023 7:35 PM, John Spaur via Healeys wrote:
>
>         I am replacing the accumulator housing, piston and rings. When
>         I opened the piston box, there was only one wide ring with two
>         narrow rings. Shouldn’t there be two wide rings and four
>         narrow to make up two ring sets for the piston?
>
>         John Spaur
>
>         ’62 BT7
>
>
>
>
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