02-24-2008, 10:20 AM
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Registered User
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Join Date: Sep 2005
Location: BC
Posts: 731
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 Quote:
Originally Posted by alfazagato
Well well. I have the original 1300 engine which came from my car with the exact same head, close bars, sharp holes and the 10532 number. I have not bothered to check what it was as it came as a unit. In chalk on the face of the head is written 1300 GTA!!! I have a 1600 GTA unit in the car currently and the head has a different casting number..
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I also wonder whether some early 1300GTA's may have had the 1600 head. Is your car a 68? At least one fairly early '68 I am familiar with has the diecast later head. The later head to my knowledge has a 105.59 part .
Also curious are the sellers port dimensions, eg 45mm intake diameter but I guess it really depends where you measure.
GTA production was 37.5mm
GTA Autodelta 66 was 39mm
GTA Autodelta 67 was 33mm
GTA junior production was 32mm
Combustion chamber diameter should be identical on 1300 and 1600, though volume may not - there some indications that the 1300 head may have less volume, but can't say that for sure unless I ever get my hands on a NOS 105.32 head which is exceedingly unlikely.
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