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PostPosted: Wed Jan 11, 2012 7:21 pm 
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848cc
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Joined: Fri Jan 07, 2005 10:19 pm
Posts: 217
Location: Sutherland
Hope you are right drmini.
I have only had the head reconditioned, and had good compression a couple of weeks ago. I saw a small 'score" in the number 3 bore, I think it might be a crack, when I repalced the head.
Maybe the first stepis to remove the head and have a look at it.
I might have to get head pressure tested.
It is also been suggested that I can used a small gas tourch on"score" and see if the mark in the bore bubbles with heat which would indicate that it is cracked.
I agree with you that it is very unlikely that the bore would cracked but I have replaced everything else.
I let you know the outcome.
I am very disappointed because it has taken nearly two years to get the Mini-matic back on the road, but is the real joy of minis driving them or fixing them?

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1967 Mini Deluxe 1275 heaps of modifications
1969 Mini Matic 1100


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PostPosted: Wed Jan 11, 2012 7:34 pm 
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Joined: Fri Mar 19, 2004 6:19 pm
Posts: 39764
Location: near Baulkham Hills, NSW
amrmeaner wrote:
Hope you are right drmini.
I have only had the head reconditioned, and had good compression a couple of weeks ago. I saw a small 'score" in the number 3 bore, I think it might be a crack, when I repalced the head.
Maybe the first stepis to remove the head and have a look at it.
I might have to get head pressure tested.
It is also been suggested that I can used a small gas tourch on"score" and see if the mark in the bore bubbles with heat which would indicate that it is cracked.
I agree with you that it is very unlikely that the bore would cracked but I have replaced everything else.
I let you know the outcome.
I am very disappointed because it has taken nearly two years to get the Mini-matic back on the road, but is the real joy of minis driving them or fixing them?

If the block IS cracked I can modify you a 1098 manual block by plugging an oilway and the dipstick hole, and fitting an auto's relief valve seat. It's easier than doing a 1275 block because the oil pump recess depth on all smallbores is the same.
Alternative- get GR or someone to sleeve your block.

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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:


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PostPosted: Wed Jan 11, 2012 8:24 pm 
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848cc
848cc
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Joined: Thu Dec 07, 2006 12:15 pm
Posts: 167
Location: Adelaide
My next door neighbour has a minimatic (69 apparently?), still on the road in daily use.

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1964 Morris "Cooper S" Group Nb Racer
1965 Morris 850
ex 1967 Morris Cooper S
ex 1969 Morris Van (Rover SPI running gear)


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