There are three different GT6 oil pumps. Early ones have a cast iron body,
the middle ones have an alloy body, square type pick up but the same length
rotor kit. Late ones (fitted to most Mk IIIs) have a microphone type gauze
pick up (alloy body) but most important a longer rotor set. The pump was
changed in all other Triumph six cylinder engines at the same time, so TR5s
and early 6s have the square pick up type - all post 71 engines have the
bigger pump. You may be interested to know that a service bulletin was
issued for the square pick up type as the inverted gauze is prone to
clogging - dealers were told to loosen the sump enough to prise the gauze
off the pump and run without one.
John Kipping
----- Original Message -----
From: "Scott Janzen" <s.janzen@comcast.net>
To: <fot@autox.team.net>
Sent: Thursday, March 31, 2005 3:49 AM
Subject: Oil Pump - My GT6 has one that is not the early or late model - ID?
> As I build up a second race motor, I keep comparing to the one I already
have.
> The "original" motor has a pump with several key differences to the early
and
> late pumps I have, which match the photos in Kas' 1st (recent) book on
page
> 130.
> - more rounded body - bolt castings are more integrated.
> -discharge is more of an elongated slot that matches the block casting,
then
> the rond holes on stock units
> -Pickup goes off at an angle, like the "late" model, but the body is six
sided
> rather than rectangular, and this one is either original or modified with
a
> short piece of pipe threaded into it and a bulb shaped screen on the end.
>
> so, what is it (TR6?), and are there any benefits to it, such as the
improved
> discharge?
>
>
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