This seems to be a recurring thread. I installed an o/d transmission in my
'72 TR6 and was told to change to 20W50 racing oil. This was by the local
LBC guru Chris Hollum who has been selling parts forever for these cars. He
showed me a FAX from Laycock in which they specifically stated that 80 or 90
weight oil would cause the triumphs transmission to wear rapidly as the
synchromesh wuld be constantly turning and engaged. They also claimed that
the higher weight oil would gum up their overdrives. So I have changed my
transmission oil to Valvoline 20W50 racing. I seem to hear the input shaft
bearing a trifle more, and the shift is undopubtedly less "soft" but that
makes sense and does not indicate great wear. I have already bored out my
layshaft for extra roller bearings and used an industrial shaft not the
piece of shiny solder the car was originally fitted with. Only time will
tell...
Mark Hooper
mhooper@pixelsystems.com
-----Original Message-----
From: Gordon Buck <gbuck@pinnaclegrp.com>
To: triumphs@autox.team.net <triumphs@autox.team.net>
Date: November 19, 1998 5:20 PM
Subject: TR6 transmission oil
>
>I picked up the latest issue of Practical Classics at the newstand
yesterday and ran across a little item that I thought I ought to ask the
list about. Under letters to the Editor there is a question about 80W/90EP
gear oil vs. 20W/50 engine oil use in the transmission. Apparently this
place "Chestnut Classics" recommends using the 20W/50 engine oil in the
trans for "improved gearchanging and giving the unit an easier life" even
though the factory recommended the heavier oil. Anyone have any experience
or "opinions" about this?
>
>Another item of interest for TR5/6 and 2500PI owners is a new electronic
fuel injection system developed by Chestnut Classics of Barnack, Stamford,
Lincs (01780 740945). Main components are Bosch electronic fuel injectors,
a modified BMW fuel manifold with pressure relief valve, fuel pump and
electronic control unit (ECU). Original TR P.I. manifolds and linkage are
retained. It's kind of pricey at 1,500 British Pounds (about $2,500), but
still fun to think about. Anyone familiar with Chestnut Classics?
>
>Gordon Buck
>Sultan, Washington
>71 TR6 CC62806
>67 MGB GT
>
>
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