Northern New England Norton Owners
Welcome, Guest
Username: Password: Remember me
  • Page:
  • 1

TOPIC: 750 Short Stroke Commando

750 Short Stroke Commando 20 Jan 2021 17:58 #1

  • dynodave
  • dynodave's Avatar Topic Author
  • Offline
  • Moderator
  • Moderator
  • dynodave
  • Posts: 389
  • Thank you received: 250
I've been researching a bit about the 74 750 SS commando.
Very rare I guess

From my research:
300000 series 850 cases
850 SIZE bore barrels
special big bore pistons
Long rods
Short stroke billet crank EDIT=reliable source that norton ground normal bolt-up crank cheeks for shorter stroke
Head- big bolt pattern- re-angled valve guide 1.6" intake. This necessitates a reshaping of the chamber which ends up removing the desaxe squish band. . Replicating Dunstall/Mick Hemmings/Fair Spares(Norvil) treatment to an 850 head. The difference of RH7 or RH8 (as shown above) is unknown to me.
4S cam
Externally it is an 850 in appearance.
One head on ebay right now claiming to be RH7 $3500
I heard one of these engines run in a featherbed in the 90's while pit crewing for Pete Kogut and Carl Hochenson. The sound was different and howled compared to a long stroke NHT.
The following user(s) said Thank You: rightshiftrick, DJB, GONZO

Please Log in to join the conversation.

Dave Comeau
  • Page:
  • 1
Time to create page: 0.372 seconds