Wednesday, October 26, 2022

BSA M20 Gruppo Velox kit

The Gruppo Velox is an Italian kit manufactured by the very enterprising Luigi Parena in Turin immediately after the war in order to transform a side valve engine to an OHV high-performance engine. It consists of an aluminum cylinder, an 82mm piston and an aluminum cylinder head with crossed pushrods using (if I translate correctly) a single valve spring. Intake valve diameter was 1.250" exhaust 1.813". 

 Apparently there were kits to fit either a BSA M20 or a Norton 16H- many of which would have been "available" all over Europe. No idea how many were sold, the link below suggests only 30.

Motorcycles-for-sale

Classic-motorcycle

Stock flathead M20

5 comments:

  1. Boy I'd love to see the innards. Thanks, Mr. G.

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  2. I looked , not much info online. If it is there, Dave will find it ;-)

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  3. Some more info here:

    http://pub37.bravenet.com/forum/static/show.php?usernum=3155626639&frmid=16&msgid=1395811&cmd=show

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  4. Thanks JP, that site pretty much covers it!

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