[Healeys] Overdrive Clutch Springs

gradea1 at charter.net gradea1 at charter.net
Sun Oct 10 14:05:38 MDT 2021

Harold- I would purchase replacement springs from Overdrive Spares in
UK. It appears that you would want to get 4 new short springs (the're
tired), and if all 4 long look equally correct you could re-use them.
The importance being that together they "equally" put pressure on the
clutch lining to keep the car in direct drive (without slipping). Be
sure to put the shorts (inner) and long (outer) in properly or they
will coil bind and really not work well.
I don't know the spring rates, but if you get them from OD Spares,
they will be the right ones for the job. Be sure to give them the
overdrive number on the casing for reference to get the correct set.
Moss has them as well as AH Spares, but did they come from OD Spares,
or made in ...? Hank

	-----------------------------------------From: "Harold Manifold via
To: "healeys at autox.team.net"
Sent: Sunday October 10 2021 12:20:46PM
Subject: [Healeys] Overdrive Clutch Springs

	I am rebuilding a 22/3087 Overdrive from a BJ7. What should the free
length of the clutch springs be? All 8 are made from 0.095” diameter
wire. The long springs measure 4-7/16” to 4-15/32” and the short
springs are 4-1/16” to 4-1/8”. The manual states the springs
should be 4-1/2” and 4-1/4”. I was surprised the short springs are
more undersized than the long springs. 

	I saw some mention that the clutch springs in earlier OD models were
made from two different wire sizes. Does anyone know the wire diameter
of length of new springs from a reputable supplier? 

	Thanks… Harold 

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