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Old 21 Aug 2008, 18:21   #1
morninggents
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Ford AX blocks

Hi all you techies out there. Not sure if this is the right spot but here goes.

Does anybody know anything about the Ford AXblock used on crossflows? In particular what do the code numbers denote? I have a block that has the following codes :

31K 95 AX
831C 6015 R34

I have seen other blocks which all have the 'AX' '831C' '6015' and 'R34' but the first numbers differ. Do these first numbers denote bore wall thickness or ability to take a large bore?

Any info would be gratefully received.
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Old 21 Aug 2008, 19:10   #2
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Originally Posted by morninggents
Hi all you techies out there. Not sure if this is the right spot but here goes.

Does anybody know anything about the Ford AXblock used on crossflows? In particular what do the code numbers denote? I have a block that has the following codes :

31K 95 AX
831C 6015 R34

I have seen other blocks which all have the 'AX' '831C' '6015' and 'R34' but the first numbers differ. Do these first numbers denote bore wall thickness or ability to take a large bore?

Any info would be gratefully received.


Right,got one!!. Idealy you need the one with 909 stamped on one of the bell housing lugs? 86 to 86.5mm is reconned to be the safe max.The numbers you have quoted Peter are just factory codes.
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Old 24 Aug 2008, 19:36   #3
ian.stewart
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eleive they are Ford SAfrica sierra engines,
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Old 30 Aug 2008, 18:20   #4
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http://www.lotus-cortina.com/library/block/blocks.htm
Is this what you want Pete.
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Old 31 Aug 2008, 08:54   #5
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Thanks Gordon. I remember this article from a few years back in the LCR magazine.
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Old 1 Sep 2008, 00:40   #6
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we run an AX block in our car at significantly more than an 85mm bore

i had always understood that the AX block is a 711m block actually used for diesel engines in South Africa

infact, i think the person who told me that was the chap who wrote the article in Gordon's link - I know him well and he's done a lot of work on our car
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Old 1 Sep 2008, 04:55   #7
terence
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terence should be qualifying in the top 10 on the gridterence should be qualifying in the top 10 on the grid
They always used to be "the" block for ff,I had one in a 1600e many yers ago,it was the type "A" which aledgedly was heavey duty.
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Old 1 Sep 2008, 11:40   #8
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The sierra in SA had an 1800 crossflow of sorts, but they're getting scarce now

if you don't need push rod holes try a sierra 1,8 diesel from a UK scrappy, a bit of fiddling with front and rear covers but essentially the same apparently, bullet proof end caps as standard as well, could easily get an 82-4mm crank in as well
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