Ausmini
It is currently Tue Jul 22, 2025 9:02 am

Board index » Mini Chat » Mini Chat

All times are UTC + 10 hours




Post new topic Reply to topic  Page 1 of 1
  [ 6 posts ] 
  Print view Previous topic | Next topic 
Author Message
crabby
 Post subject: head
PostPosted: Wed Mar 02, 2011 5:56 pm 
Offline
848cc
848cc

Joined: Fri Dec 12, 2008 3:07 pm
Posts: 142
Location: tasmania
Got a 11 stud head would like to no what it is off, the only numbers i can find are 12g 940 :?:
Top
 Profile  
 
GT mowog
 Post subject:
PostPosted: Wed Mar 02, 2011 6:00 pm 
Offline
Mods rock!
User avatar

Joined: Fri Oct 03, 2008 9:02 pm
Posts: 5079
Could be a Cooper S head. Look around were the thermostat goes there should be some numbers stamped in to it.

_________________
Image
Top
 Profile  
 
drmini in aust
 Post subject:
PostPosted: Wed Mar 02, 2011 6:24 pm 
Offline
religious status
religious status
User avatar

Joined: Fri Mar 19, 2004 6:19 pm
Posts: 39755
Location: near Baulkham Hills, NSW
GT mowog wrote:
Could be a Cooper S head. Look around were the thermostat goes there should be some numbers stamped in to it.

Cooper S had 12G1805 stamped there (sometimes).
Morris 1100S had 12G938 stamped there (sometimes).
They are both the same basic casting- the S got bigger inlet valves, double springs and 2 extra head stud holes, is all.

_________________
DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:


Last edited by drmini in aust on Wed Mar 02, 2011 6:31 pm, edited 1 time in total.

Top
 Profile  
 
crabby
 Post subject: head
PostPosted: Wed Mar 02, 2011 6:28 pm 
Offline
848cc
848cc

Joined: Fri Dec 12, 2008 3:07 pm
Posts: 142
Location: tasmania
The only place i can find numbers are in between rockers and further along found a w :!:
Top
 Profile  
 
GT mowog
 Post subject:
PostPosted: Wed Mar 02, 2011 6:29 pm 
Offline
Mods rock!
User avatar

Joined: Fri Oct 03, 2008 9:02 pm
Posts: 5079
Cooper S and Non-Cooper S castings of the 12G940, I have seen no less than 6 different castings with quite a lot of difference between then, particularly in the exhaust port valve guide boss area.

_________________
Image
Top
 Profile  
 
drmini in aust
 Post subject:
PostPosted: Wed Mar 02, 2011 6:31 pm 
Offline
religious status
religious status
User avatar

Joined: Fri Mar 19, 2004 6:19 pm
Posts: 39755
Location: near Baulkham Hills, NSW
Measure the inlet valves-
33mm is Morris 1100S (or maybe a MG Midget, same head).
35.6mm is Cooper S.

_________________
DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:
Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  Page 1 of 1
  [ 6 posts ] 

Board index » Mini Chat » Mini Chat

All times are UTC + 10 hours


Who is online

Users browsing this forum: No registered users and 88 guests

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  

© 2016 Ausmini. All garage work involves equal measures of enthusiasm, ingenuity and a fair degree of irresponsibility.