ahebron Posted January 9, 2017 Report Share Posted January 9, 2017 That is the number stamped on a NOS cylinder head being sold as for a Vitesse. It looks to be a Mk1 of some sort. Stamp is above front exhaust port I cant find any reference to this number. Can any one tell me what Triumph this is for. Seller also has Standard 10 NOS head for sale and advises they have valves bearings and rings. Thanks Adrian Link to comment Share on other sites More sharing options...
Pete Lewis Posted January 9, 2017 Report Share Posted January 9, 2017 Sorry had a good look around but cant identify from that number some suppliers stamped numbers like these when adding exhaust seat inserts it may not be triumph issued number Is sherlock busy pete Link to comment Share on other sites More sharing options...
Colin Lindsay Posted January 11, 2017 Report Share Posted January 11, 2017 I've just upgraded my Mac to another model so haven't yet transferred across all my reference numbers but is this the compression ratio code, not the part number? Link to comment Share on other sites More sharing options...
ahebron Posted January 13, 2017 Author Report Share Posted January 13, 2017 Hi Colin Is that how they differentiate the various similar cylinder heads. But like Pete I cannot find reference to that number. Adrian Link to comment Share on other sites More sharing options...
Dick Twitchen Posted January 14, 2017 Report Share Posted January 14, 2017 I have just checked the three stepped heads (Mk1 GT6/Vitesse) in the garage and all are stamped 515400. Link to comment Share on other sites More sharing options...
Pete Lewis Posted January 14, 2017 Report Share Posted January 14, 2017 http://www.chriswitor.com/technical.php You realy need the casting ref and head depth eg have a browse at chris witor look up technical and head applications download Wont help, with a vitesse but gives the sort of clues to help pete Link to comment Share on other sites More sharing options...
JohnD Posted January 15, 2017 Report Share Posted January 15, 2017 OP, your picture clearly shows a Mk1 head, with the ports all in line. Unless it's a 1600 head. John Link to comment Share on other sites More sharing options...
ahebron Posted January 15, 2017 Author Report Share Posted January 15, 2017 OP, your picture clearly shows a Mk1 head, with the ports all in line. Unless it's a 1600 head. John If it is a 1600 head then I would grab it as I have a spare 1600 block and bottom end., But I dont know and neither does the seller. Adrian Link to comment Share on other sites More sharing options...
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