OS 90 Surpass 4-stroke with supercharger

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OS 90 Surpass 4-stroke with supercharger

Postby jerry1927 » Fri Mar 07, 2008 12:00 pm

Does anyone hereabouts know how well the above engine performed? I think it was offered for no more than about 1 year, though it took me more than a year to get delivery. Harry Roe told me OS was able to equal its performance by alterations in porting and timing without the need for the Roots supercharger. Did anyone offer a spark ignition package for it?
Thanks.
Jerry
jerry1927
 
Posts: 56
Joined: Sat Jan 24, 2004 2:42 pm
Location: Bradford. Ohio

OS 90 Surpass

Postby jerry1927 » Fri Mar 07, 2008 12:03 pm

Hi.
I forgot to add that Harry worked with Shigeo Ogawa on performance OSs and with Jaurez Garofali on Super Tigres.
Jerry
jerry1927
 
Posts: 56
Joined: Sat Jan 24, 2004 2:42 pm
Location: Bradford. Ohio


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