Joachim Moeller Posted December 1, 2014 Report Share Posted December 1, 2014 Hi, I have a spare cylinder head (supposed to be for a GT6) that has the following number stamped on the manifold side : 512425. The raised number on top of the head is identified (well sort of) as : 3 0 8(or6) 4 7 8(or5). Is anybody able to highlight what I've got? Mainly to make sure it is a 2000cc head. Thanks to all. Joachim Link to comment Share on other sites More sharing options...
Joachim Moeller Posted December 13, 2014 Author Report Share Posted December 13, 2014 Hm, as the heigth of the head is 2"13/16inch (only) I guess it is a Vitesse 1600 head. Any ideas? Thanks and cheers, Joachim Link to comment Share on other sites More sharing options...
Dick Twitchen Posted December 24, 2014 Report Share Posted December 24, 2014 Joachim, Just checked a Mk1 head I have in the garage. I cannot find a number stamped on the manifold side and the raised number on the top of the head at the front is V2021, the head casting is 3 3/8" deep. Merry Xmas! Dick Link to comment Share on other sites More sharing options...
Joachim Moeller Posted December 27, 2014 Author Report Share Posted December 27, 2014 Merry Xmas Dick and the best wishes for 2015, I will double check the dimensions of the head as last time I've used an odd chinese imperial measure (as it's difficult to get non metric things over here in Germany- as long as it is not plumbing stuff). It just started to snow , so work on the car will have to wait anyway... Happy New Year Joachim Link to comment Share on other sites More sharing options...
JohnD Posted December 27, 2014 Report Share Posted December 27, 2014 Joachim, A number stamped on the head in the factory tells you what it was intended for in the factory. How do you know what has been done to the head ever since? You measure the chambers. Easy to do so, with a burette and glass cover square. Then whatever reshaping of chambers and skimming of the head that has been done since, you can be certain what their volume is. Measuring the stroke volume of the block needs merely the measurement of bore and stroke, simple to be sure of the numbers. Then you can work out the CR. If you need more detail, may I suggest my own article on this?: http://www.totallytriumph.net/spitfire/skimming_your_head.shtml JOhn Link to comment Share on other sites More sharing options...
Joachim Moeller Posted December 27, 2014 Author Report Share Posted December 27, 2014 Thank you John for your information input and especially for the link to your article. Initially I wanted to make sure that the head I've got is for a GT6 MkI and not for a 1600 Vitesse (as I think those where different). Once I'm sure it is for a GT6 it makes sense to start work on it. Best wishes for 2015 Joachim Link to comment Share on other sites More sharing options...
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