[Healeys] Question concerning BJ8 transmission problem

[Kees Oudesluijs]

On these old cars double declutch when shifting down and take your time 
shifting up with a small pause in neutral, less than half a second will 
do, just to match the revs. This will keep your synchro's alive. Just 
treat it as a non-synchro box. I am so used to it that I also do it on 
my more modern daily driver.

Kees Oudesluijs



Op 18-4-2023 om 13:26 schreef rfbegani at gmail.com:
>
> Alan, thanks for reminding me about down shifting my poor old still 
> working fine AH gearbox.
>
> Bob Begani BJ8 67
>
> *From:* Healeys <healeys-bounces at autox.team.net> *On Behalf Of *Alan 
> Seigrist via Healeys
> *Sent:* Tuesday, April 18, 2023 4:51 AM
> *To:* BJ8Healeys <sbyers at ec.rr.com>
> *Cc:* healeys at autox.team.net
> *Subject:* Re: [Healeys] Question concerning BJ8 transmission problem
>
> Steve -
>
> As a general rule, I never bother downshifting in the BJ8 box except 
> from 4th to 3rd, anything less you are better off using the brakes 
> because brake pads are way cheaper and easier to replace than synchro 
> rings or a clutch.  Of course this means you have to brake 
> intelligently (esp. going downhill) and not burn em.
>
> Another thing to consider other than a worn synchro is if the throwout 
> bearing is worn, you'll have a tendency to grind various gears.
>
> Best,
>
> Alan
>
> On Mon, Apr 17, 2023 at 9:08 PM 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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