[Healeys] Overdrive query
rchaskell at earthlink.net
Wed Jul 28 16:47:10 MDT 2021
The handwritten dimension on page 4, illustration 6.9 is 0.125" ->
0.219". It's 0.125" plus 3/32" as mention in the text.
I don't have a loose piston. For the washers to install in the piston,
the inside diameter ought to be smaller than the spring and the outside
diameter a bit smaller than the piston's inside diameter. Might have to
chamfer the OD to match the piston.
Austin Healey 3000 BN7/BT7 registrar
On 7/28/21 5:45 PM, Simon Lachlan via Healeys wrote:
> Attached is Del Border’s excellent work on, you guessed it, the
> overdrive. Doubtless, you’ve all got a copy.
> Page 4, illustration 6.9. Can anyone tell me what the second
> handwritten figure is? ie, “Increase this dimension from 0.125” to ?????”.
> And…..Page 5, paragraph starting, “Now to get the pressure…” Does
> anyone have the precise dimensions of these washers? ie 1/16” thick by
> ????” wide?
> Lastly, has anyone tried these two mods?
> Page 6’s work the springs is interesting but OTT for my purposes!
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