Page 1 of 1
Early 1071 Head bolt
Posted: Tue Sep 29, 2015 8:33 pm
by Nevsmini
Started stripping my July '63 1071 engine tonight, only to find the bolt by the thermostat different to the norm. See pics below of the normal S head bolt and the early one. The tread size is the same and bolt length is also the same. The head of the bolt is 9/16" instead of 1/2" and the shank of the bolt is a lot thicker. Anyone come across this before on an early 1071 S engine?
Re: Early 1071 Head bolt
Posted: Wed Sep 30, 2015 7:36 am
by Toby
does it have the 300 marking on the top of the bolt head?
Re: Early 1071 Head bolt
Posted: Wed Sep 30, 2015 7:03 pm
by Nevsmini
I don't know Toby will have a look over the weekend. Have you ever come across this?
Re: Early 1071 Head bolt
Posted: Fri Oct 02, 2015 9:16 am
by mk1
I suspect yours is a non standard replacement. I have had a good number of 1070's some of which were very original & complete & I have never seen a bolt like yours.
M
Re: Early 1071 Head bolt
Posted: Fri Oct 02, 2015 8:02 pm
by Nevsmini
It's a very original early lump. Original head block on 190 box etc etc. water pump has been changed all right, so I doubt it was replaced but it is possible, but why would you change it ???
Toby no markings on top.