[6pack] 72" TR6 Engine Rebuild

[Alex&Janet Thomson]

Bob - I lost several lobes of a cam several years ago and replaced the
camshaft with a GoodParts GP2. Lots of low end torque (like my farm
tractors) and seems just right for our type of driving. I can't remember how
much we had the head shaved but the shop that did the work gave me figures
for actual volume of the combustion chamber contained in the head. I never
did get around to doing the math. I think I bought the cam and followers
from TRF along with a new oil pump. The new oil pump made a big difference
in hot pressure.

Alex Thomson

-----Original Message-----
From: 6pack-bounces at autox.team.net [mailto:6pack-bounces at autox.team.net] On
Behalf Of Bob Rochlin
Sent: Sunday, November 03, 2013 5:08 PM
To: 6pack at autox.team.net; Truiumphs
Subject: [6pack] 72" TR6 Engine Rebuild

Hi List,   I'm contemplating rebuilding the engine of my 72' TR6 this
winter.  I am hoping the collective experience of the list can give me some
guidance as to some of the decisions I'll have to make.   I'm thinking of
getting a cam just a little hotter then stock and shaving the head just a
bit.
I've been very happy with the performance of the original ZS carburetors and
wonder of they are  able to supply the increased fuel demands of the new set
up. As far as I understand the jets are fixed.   Speaking of cams, how
necessary are cam bearings?  Should I have them installed while I'm doing
the rebuild?  The engine runs very well, but bit doggie.  I don't think that
it's ever had any machine shop work done.  I did a compression test about a
year ago.  The results were low of 85, hight of 120.  A leak down test
confirmed that almost all the lost compression was through  the rings.  The
car burns almost no oil (it just leaks out a little)  what other components
should I replace as a matter of course during the rebuild?  Anything I
should look out for?  I am long forward to hearing your advice.  Take care.
Bob

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