Originally created in 1929 by robert roof and called r r cyclone overhead valve.
Roof 101 cyclone ohv.
Our last run of 12 heads was shipped january 2017.
The 101 name is based.
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We make these historic and popular cylinder heads once every other year.
The head is shipped with a black painted iron casting and as cast aluminum rocker boxes and bronze caps.
The roof 101 cyclone is made to fit the 1928 1934 model a and b ford and the german g28t engines.
In 1928 speed hunter robert roof invented what s thought to be the first ohv conversion the roof 101 cyclone adding 150 per cent more power to the four cylinder engine in his model a roadster and pushing him to 101 mph.
A production run depends on customer s continued demand.
Roof cyclone 101 ohv.
The head you see here is a recreation of that engine by his grandson jim roof.
Model a b and t ford four cylinder vintage speed sport racing performance touring speed parts and secrets magazine.
Roof 101 cyclone ohv photos above is the roof 101 cyclone ohv 4 port conversion for model a and b fords.
Roof 101 cyclone ohv photos.