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The Purpose Of This Blog

This blog has been started to try and bring together as much information as possible on the alloy engine pre-unit Triumphs.
From the early GP500 through to the last Tiger 100s and Trophies, including the low production exotica that was also produced.
Any comments, corrections or stuff for inclusion will be gratefully received.

Please contact britishironworks(at)aol(dot)com

Jonnies Triumphs

Sunday, 30 June 2013

E3663 Delta Head

The 500 Delta Head produced from 1957 and 1959 although some casting date codes are reported to run into the sixties.

Note the register around the combustion chambers to allow for the sleeves in the 500 alloy barrel. This head is very similar to the first T120 heads, this register is the difference.

Spigots for the single carb manifold still in place, later versions lost these.

E3663 seems to be a popular part number, there are several head designs that share this number.

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