[Healeys] Question concerning BJ8 transmission problem

[Michael Salter]

The syncro cones in the BJ8 gearbox, the ones that use steel syncro rings,
have a special coating on them. This coating has a tendency to flake off if
the box is subjected to abuse (not double declutching) for a
prolonged period of time.(You touched on this with your mention of the
syncro ring contacting the gear face.)
Are you sure this coating was in good condition on the replacement gear as
what you describe sounds to exactly the symptoms of the coating having come
off?

M


On Mon., Apr. 17, 2023, 8:50 a.m. BJ8Healeys via Healeys, <
healeys at autox.team.net> wrote:

> Hello, Healeyphiles –
>
>
>
> I received the message below from a BJ8 owner.  I’m passing it on to see
> if anyone has any thoughts or advice about the problem.
>
>
>
> Thanks!
>
> Steve Byers
>
> BJ8 Registry
>
> AHCA Delegate at Large
>
> Havelock, NC  USA
>
>
>
>
>
> My question for you on my transmission rebuilt is when I was downshifting
> from third gear to second the gears were grinding I was always having to
> double clutch to get it in the second gear. I have replaced just about
> every part in the gearbox including the second gear which I thought was the
> problem as the synchro was bottoming out or touching the face of gear it
> was well worn. Went yesterday for my first test drive and all of the gears
> worked perfectly and shifted very smoothly but when I try to downshift from
> third to second it grinds terribly I had to come to a complete stop to be
> able to shift it into second gear. It shifts from 1st to 2nd no problem
> third and fourth gears work very well as does reverse. Do you have any
> suggestions? I couldn’t find anything on the tolerances between the gears
> would you have access to some kind of chart or spec sheet?  My other
> thought was the plunger in the sliding hub might not be engaging on the
> first motion shaft. Any thoughts or ideas for me to try!
>
> I would certainly appreciate any help you might be able to provide!
>
>
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