Michael
I'm not familiar with the disqualification matter but there seems to be
some intended fuzzy information in the homologation papers or is it fuzzy
interpretation.
The small valve 260 heads are C3OE-B; also the valve stems are smaller in
diameter.
The large valve 260 heads are C4OE-A; with larger valve stems, everything
here is similar to the 289 heads.
C3AF-F 289 heads have 1.67 & 1.45 valves
C4AE-C 289 heads have 1.78 intake valves, Feb 1964
C5AE-B 289 heads have 1.78 intake valves, May 1964
HiPo heads had different casting numbers but follow the same change format.
Ron Fraser
-----Original Message-----
From: michael king [mailto:michael.s.king@gmail.com]
Sent: Sunday, September 06, 2009 8:48 PM
To: rfraser@bluefrog.com
Cc: kevin beck; Tigers@autox.team.net
Subject: Re: [Tigers] 260 heads
The 260 heads C40E-A have the larger valves; 1.67 & 1.45. This
change was made in Feb 1964. The valve size is the same as the 289 in this
time frame. The 289 went to a 1.78 intake valve April 1964 in the C4OE-B
heads.
Wasn't that the slip up in homologation that caught rootes out on the monte
rally where they were disqulaified for having smaller valaves than the
homologation papers said.. they were using the old heads.. not the new
larger valve ones and hence were accused of detuning for reliability?
--
Regards
Michael King
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