[Spridgets] Choices - heads, cranks, and blocks

weslakemonza1330 at aol.com weslakemonza1330 at aol.com
Wed Jan 13 10:55:09 MST 2010


Turn them back upside and remove the sump.  If the 12CJ block is solid  
under the centre main it's arguably the strongest 1275 Spridget block.  The  
12CD will have a casting window under the centre main that you might want to  
tidy up and crack test.  
 
Regards
 
Weslake-Monza 1330
 
In a message dated 12/01/2010 23:41:17 GMT Standard Time,  
mdrowe at optonline.net writes:

>You've posted casting numbers for the blocks - do they have engine  
numbers on them?  

They were sitting upside down and I didn't  notice the plate.  One is 
12CD/DA/H 25363 ('68 MK3 MG).  The other  is 12CJ/DA/H 36677 ('70-'71 MK 4 MG).

Michael  Rowe


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