Speedway Workshop

Neil Street Conversions

The Neil Street Mk1 (Left) and Mk2 (Right) 4 valve conversions.

Steve Magro from Australia, who is a regular contributor to these pages has kindly sent me this recent photograph he took.

It's a shot of Phil Crump with the original Street 4 valver..."It's still got the original piston in it", said Phil...



Street, at 45 one of the oldest riders in the British League for Newport, and recognised as a Wizard with engines, had similarly converted a JAP.

Rarely seen on the shale in 1977, the JAP four-valver was seen as especially beneficial to Grass and Long Trackers though the engine was built for Halifax's Charlie Monk, who was very impressed after a short debut at The Shay track.
As with the JAWA, the JAP had twin overhead camshafts driven by a 3/8in pitchchain from the Crankshaft.

I am desperately seeking a better picture(s) of the Neil Street conversion, maybe someone out there can help ?


The Street JAP 4-Valve

For nearly two years Neil Street has been famous for his own four-valve conversion for the two-valve JAWA engine, and used so impressively by his son-in-law, 1976 World

Finalist Phil Crump. Then Street, at 45 one of the oldest riders in the British League for Newport, and recognised as a wizard with motors, had similarly converted a JAP.

Rarely seen on the shale in 1977, the JAP four-valver was seen as especially beneficial to Grass and Long Trackers though the engine was built for Halifax's Charlie Monk, who was very impressed after a short debut at The Shay track.

As with the JAWA, the JAP had twin overhead camshafts driven by a 3/8in pitchchain from the Crankshaft.

I am desperately seeking better pictures of the Neil Street conversion, maybe someone out there can help ?

* Note: Images missing from archive.


28-Aug-2018
ernst.boegh at jmm-group.com
Street MK1 and 2
Can any one please help me with drawings/pictures and technical data on the Street MK1 and 2, I am about to rebuild such two engines, but they are totally disassembled and some parts is missing. Best regards Ernst Bøgh, Denmark
Ernst Bøgh
Denmark

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