The head you see here is a recreation of that engine by his grandson jim roof.
Roof 101 cyclone.
Roof 101 cyclone head engine for dyno testing piranio s antique automotive in co operation with charlie yapp secrets of speed scalded dog speed parts we are constructing a model a ford short block to accept the new cyclone cylinder head and components.
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.
The following photos represent what can be done to bring the head to show quality with paint powder coating and polish.
The roof 101 cyclone is made to fit the 1928 1934 model a and b ford and the german g28t engines.
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Roof 101 cyclone high compression overhead valve for ford model a.
We will use this engine as the development engine for this combination.
The head is shipped with a black painted iron casting and as cast aluminum rocker boxes and bronze caps.
Model a b and t ford four cylinder vintage speed sport racing performance touring speed parts and secrets magazine.
However in 2008 charlie yapp along with robert roof s grandson jim designed an upgraded version of the original and called it the roof 101 cyclone ohv four port.
Roof cyclone 101 ohv.
A production run depends on customer s continued demand.
Michael turner 1931 ford.
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Dec 15 2015 14 00 et 19 00 gmt date format.
Roof 101 cyclone ohv photos.
Roof 101 cyclone ohv photos above is the roof 101 cyclone ohv 4 port conversion for model a and b fords.