Bob D.,
My TD has the same habit. Until two years ago, it had the usual 90w
oil in its gearbox, and it would be difficult to engage first, sometimes,
from stop without pulling toward second and then pushing toward first.
Then I switched to Redline MT-90. In my opinion, the first gear hang-up
got better. It's still present, however.
So my guess is that the oil is not the issue and that there is some
internal, mechanical reason.
Bob H.
On Sat, 19 Apr 2003 12:08:02 -0000 "Bob D." <bobmgtd@insightbb.com>
writes:
> Wow! My TD has the exact same symptom, right down to the 30 minutes!
> I wonder if we have the same problem? I figure the time factor must be
> related to something heating up. Now the TD doesn't have synchromesh in
1st, so
> synchromesh can't be the problem in my case. (And, I religiously
> come to a complete stop before shifting into first.) When 1st gets too
cranky,
> I just start up in 2nd. With the stock 5.125 rear end on the TD, 1st is
a
> bit of a granny gear anyway.
>
> The time/temperature angle makes me wonder if the viscosity of the
> oil has something to do with the problem. This is just a theory, but
maybe
> the Redline MTL I'm using is too thin at temperature. Or perhaps, the
problem is
> really a worn part that functions better when the oil is
thicker/colder. I'm
> tempted to try a heavier gear oil. This may be a "Band-Aid", but if it
works
> what the heck.
>
> I'm going to cross post this to the mg-t list, maybe someone there
> has an idea.
>
> Bob Donahue (Still stuck in the '50s)
> Email - bobmgtd@insightbb.com
> 52 MGTD - NEMGTR #11470
> 71 MGB - NAMGBR #7-3336
>
> ----- Original Message -----
> From: Mark D
> To: MG-MGB@yahoogroups.com
> Sent: Monday, April 14, 2003 7:02 PM
> Subject: [MG-MGB] Tightness in 1st Gear - Warm Engine
>
>
> Greetings all,
>
> When my '78 MGB is "cool" - just started driving, all
> the gear changes are smooth. When I've driven about
> 30 minutes it's real reluctant to go into first gear
> out of neutral. But, only into first gear... second
> through fourth are fine at all times. Any ideas what
> causes this?
>
> Thanks,
> Mark
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