The Neil Street Mk1 (Left) and Mk2 (Right) 4 valve conversions.
Steve Magro from Australia, 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 pitch chain from the Crankshaft.
I am desperately seeking a better picture(s) of the Neil Street conversion, maybe someone out there can help ?
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 pitch chain 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