With the discussion of "pre-SD1", it is referring to the re-engineering that
went into the Rover V8 engine in preparation of the launch of the Rover 3500
"SD1" in 1976. So, the TR8 used the "later" style engine, and not the
pre-SD1.
(Let's stop at 1982, because then there are further developments such as the
"stiff" block which came about with the Rover 3500 Vitesse...)
David
David Huddleson david.huddleson@ccra-adrc.gc.ca
Ottawa, Ontario, Canada
-----Original Message-----
From: Kevin Burtch [mailto:kevin_burtch@yahoo.com]
Sent: July 14, 2000 6:42 AM
To: buick-rover-v8@autox.team.net; tr8@mercury.lcs.mit.edu
Subject: Re: Rover head port/valve size list?
Thanks... I have both of his books, but unfortunately they are
about 4K miles away.
I remembered that the post-SD1 heads had bigger valves, but
never understood what the TR8 is considered... from a US
perspective, it's pre SD1, but from a European perspective,
it's post... since that's where they were made, I would assume
that the TR8 got the bigger valve heads.
Also, the posts I've seen referring to big-valve heads were
referring to engines newer than both of the Hardcastle books...
either the 4.2 or the 4.4 (maybe the 4.0 - which is just a
3.9 with cross-bolted mains from what I understand - same bore
and stroke).
Thanks,
Kevin
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