[Healeys] When to change transmission oil

[Healey Bruce]

I only start in 1st on the more severe inclines.  Starting in 2nd is
generally no problem at all, and does not require excessive slipping of the
clutch--just a bit more fuel through the engagement point.

Bruce
Brea, CA
1960 BN7

-----Original Message-----
From: healeys-bounces at autox.team.net [mailto:healeys-bounces at autox.team.net]
On Behalf Of michaelsalter at gmail.com
Sent: Saturday, April 05, 2014 8:13 AM
To: healeys at autox.team.net
Subject: Re: [Healeys] When to change transmission oil

Actually I would add that what actually destroys the original gearboxes in
Healeys is the hardened steel particles that don't make it to the overdrive
filter magnets and circulate within the gearbox.

These particles are shed by the 1st and reverse gears every time you hear
that bgrindb or bcrunchb upon engaging 1st or reverse and make their way
through the gearboxes oil circulation system to the layshaft bearings where
they cause the rapid failure of the needle roller bearings in there. As
these bearings fail they in turn add to the volume of hardened steel
particles in circulation thus exuberating the problem.

It is to this reason that I recommend to all Healey owners that they get
into the habit of starting off from a stop in 2nd gear, an easily learned
habit, that will enormously prolong the life of the gearbox.

This of sourse does not apply to BN1s with the 1st gear locked out because
they effectively have a bfull syncrob box.


Michael S

BN1 #174











From: Bob Spidell
Sent: b
Saturdayb
, b
Aprilb
 b
5b
, b
2014 b
10b
:b
23b
 b
AM
To: healeys at autox.team.net





The issue in gearboxes is ground metal, mostly brass from the shift levers.
I've changed out oil that sparkled in the sunlight from ground brass, but
did not feel gritty in the slightest (note some greases are made with finely
ground metals like molybdenum).

You could probably get away with not changing it ever again--just
replenishing what leaks out--but I'd change it at 10yrs/20K miles because,
well, just because.

Bob


On 4/5/2014 6:32 AM, Ron Fine wrote:
> I have Redline MT-90 in my transmission (BN7) which was completely
> rebuilt in 2005.  The oil is about 5 years old.  I drive less than 2000
miles a year.
> Transmission runs fine.  Is there a consensus or guide line on how
> often to change the oil?
>
> Thanks,
>
> Ron Fine
> 61BN7
> W.L.A.
>
>
>


--
*******************************************************************
Bob Spidell           San Jose, CA            bspidell at comcast.net

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