10-4 on better syncros...
Sent from my iPhone
> On Nov 4, 2014, at 4:23 PM, "Jeff Durant" <jeff_durant@comcast.net> wrote:
>
> Scott,
> Was the MS 2nd gear steel bush the stock "top hat" version or the 2 piece
> version (bush and thrust washer)? I ask because I've found the steel
bushing
> and thrust washer offered as an upgrade for the earlier MS 2nd gear have
some
> running clearance issues. Specifically, the OD of the bush is very tight
when
> fitted to MS 2nd gear in some cases.
> I just built a CR TR box using the 2 piece steel bush/washer arrangement
from
> Rimmer Bros. and had to polish both the OD of the bush and ID of 2nd gear
to
> gain an acceptable level of clearance for adequate lubrication. The bush
ID
> to mainshaft was good after minor deburring and polish. Had I not done so,
I'm
> certain it would have seized resulting in a failure similar to what you
have
> experienced.
> As a general rule, I spend lots of time deburring and polishing the
mainshaft,
> bushes and all gears before final clean and assembly. So far, no
catastrophic
> trans failures! Now if I just had better syncros.
>
> Regards,
> Jeff Durant
> TR4a/250/6 and #12 TR6
>
> Sent from my iPhone
>
>> On Nov 4, 2014, at 10:28 AM, Scott Janzen <sjanzen@me.com> wrote:
>>
>> I had a freshly rebuilt transmission with mostly new parts, including a
new
>> close ratio gear set, fail spectacularly after only a few laps of use.
> Second
>> gear "welded" itself onto the mainshaft, with the result that the gearbox
> was
>> effectively in two gears at the same time (car was under power in third
> gear)
>> and all of the teeth were stripped off of the 2nd gear set.
>>
>> The gearbox was filled with fresh Redline MTL (75-90) - it was still
> filled
>> well above the side fill plug when I took the top off the box. What could
>> cause this failure - chalk it up to a defective bushing? The bushing was
>> steel (?), not the bronze variety.
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