Randy,
I have not seen an answer on this so I'll give it a try.
The F Cam was one of the cams that Triumph / Kas Kastner developed for the
TR series back in the 60's. The lettering ranged from a C to a D to the F
and finally a G-3, each becoming more radical and less street friendly. The
details of the F cam performance are well documented in Kas's Race
Preparation books that are still available from TRF and are reprinted in
some of the Haynes or Bentley Manuals as well.
I don't have the Manual handy but I recall a statement against the F for
street use due to it's need for high idle and a more difficult launch from
stop as well as the need for a significant increase in compression required.
Many years ago I too contemplated using a F cam but went with the D instead.
Of course all of this was in the day that you could get leaded pump gas in
high enough octane to make all of the engine modifications worthwhile.
I'd stay with a milder cam than the F. There are many selections available
that have similar characteristics as a D Cam that will give you good street
performance and drivability.
JVV
----- Original Message -----
From: "Randy Homanchuk" <rhomer@porchlight.ca>
To: "list" <Triumphs@autox.team.net>
Sent: Wednesday, September 21, 2005 7:17 PM
Subject: cams
> Hello list ,currently in position of a Mr.
> Kastners F grind tr3 cam in your opinion is this cam to radical for
souped-up
> tr3 street car ,87mm pistons,oversize valves,lightened steel flywheel?
what
> does the f stand for? looks by measurement about .010 thous. increasre in
> lift and radical increase in duration ,does that profile increase usually
mean
> a high end (higher RPM power band?Thanks in advance Randy 1960 tr3A
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