If it is noise being transmitted from the gear box to the shifter you may be
on the right track. But don't discount the shifter. That could be the
source of the noise. There are several items that secure the shifter. Many
time these items are not re-installed after shifter/transmission removal.
Take a close look at a parts manual, you'll see the offending parts (nylon
bushings, springs, ball, etc). There are even special bolts to hold the
shifter in place on the late transmission.
http://tinyurl.com/392dm
Check nos. 116, 117, 114, 120, 118, 119.
The above is from www.mossmotors.com
Good luck,
Larry Hoy
> -----Original Message-----
>
> > Group,
> >
> > 1) What is the best oil type (Gear or Motor oil) and
> additive to put
> > in MGB non-overdrive transmission to quiet noise ??? I' am
> currently
> > using Amsoil 20w50 with PTFE - adding the PTFE made it
> shift smoother
> > but it still makes a lot of noise which is transmitted through the
> > shifter to my ear.
> > 2) Is it possible to tell if just replacing carb throttle
> shafts will fix a
> > carb throttle shaft vacuum leak without buying the new
> shafts ?? Carbs are
> > HIFs (AUD550). Is there a shaft bore measurement I can take??
> >
> > Thanks in Advance, Skip '74 B
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