Mr.Sumo Posted April 23, 2007 Report Posted April 23, 2007 ...just seen one advertised for sale with an "AX " block....whats that then
Posse Posted April 23, 2007 Report Posted April 23, 2007 Its the one to have m8 its an south African block you can deffo play with one i think there thicker than a 205 block.
Dom Posted April 23, 2007 Report Posted April 23, 2007 they're the one to have mate, are they steel or something? Well I think they're the strongest xflow block but i'm sure i'll be corrected
tim Posted April 23, 2007 Report Posted April 23, 2007 ax tall block,stronger block and used for twin cams the london to mex mk1s had ax blocks
Dom Posted April 23, 2007 Report Posted April 23, 2007 damn, must type faster! Did I read somewhere that you can bore them out and use a fiat crank to get 2+ litres?
Mr.Sumo Posted April 23, 2007 Author Report Posted April 23, 2007 Its the one to have m8 its an south African block you can deffo play with one i think there thicker than a 205 block. blimey , thanks very much , cheers everyone
Mr.Sumo Posted April 23, 2007 Author Report Posted April 23, 2007 damn, must type faster! Did I read somewhere that you can bore them out and use a fiat crank to get 2+ litres? 2.0 litre Crossflow.....that would be interesting
ever88 Posted April 23, 2007 Report Posted April 23, 2007 they are a thick wall block that can be bored out to 1860cc on standard crank. you can get the odd 711m that will do it but it's not advisable. most standard 711m will bore to effective 1700 without problems but after that, walls get very thin and only an odd one due to the casting will go further. 2000cc can only be got with longer throw crank. I'm an old ford fan but the xflow and pinto are not the best way to go for power IMO. they suit an original RS or if you have bits around to make a screamer, but the 2000cc 16v modern engines of today make a better job of it for less money.
Fiesta Steve Posted April 23, 2007 Report Posted April 23, 2007 The most you'll get out of an AX block on a standard stroke is 1824cc using an 86.5mm piston. Worth around £1000 for a bare block.
ever88 Posted April 23, 2007 Report Posted April 23, 2007 I agree cc's have always been the xflow achillies heel. I spent a fortune on one over many years and whilst it was great fun I wish I put money into something else. I researched long an hard how to get the most and whilst my memory of 1860 vs 1824cc was a little off you would be better served with a duratec or zetec. trouble is I don't think you are allowed these if your racing historic's
chris mk 1 Posted February 28 Report Posted February 28 Ax block is the block used in the south african escorts . Thicker block cast . These can be bored out far more the the 711 blocks
Nige65 Posted February 28 Report Posted February 28 Is their a straight forward way of identifying the AX block? I have a SA Escort 1600 Sport and was intrigued as to whether it had one fitted.
Miniliteman Posted February 28 Report Posted February 28 -> https://www.burtonpower.com/original-ford-kent-1600-x-flow-ohv-ax-iron-block-used-fp108x.html
guido Posted February 28 Report Posted February 28 (edited) AX crossflow engine block not for grabs? It will cost some money if ya can find any? What is your idea with this? Edited February 28 by guido
Johnny Boy Posted March 1 Report Posted March 1 On 28/02/2026 at 17:24, Nige65 said: Is their a straight forward way of identifying the AX block? I have a SA Escort 1600 Sport and was intrigued as to whether it had one fitted. My 1980 SA Escort Sport has an AX thick wall block, but its not marked AX ,Its marked 831C 6015R34 with out the AX cast into it. Apparently some 831C blocks don't have AX cast into them as well .
GrahamU Posted March 2 Report Posted March 2 The block from my SA sport has a 711M number but not one I recognise 711M 6015 R34 Anyone know what it is?
YellowTaxi Posted March 17 Report Posted March 17 On 23/04/2007 at 19:43, ever88 said: they are a thick wall block that can be bored out to 1860cc on standard crank. you can get the odd 711m that will do it but it's not advisable. most standard 711m will bore to effective 1700 without problems but after that, walls get very thin and only an odd one due to the casting will go further. 2000cc can only be got with longer throw crank. I'm an old ford fan but the xflow and pinto are not the best way to go for power IMO. they suit an original RS or if you have bits around to make a screamer, but the 2000cc 16v modern engines of today make a better job of it for less money. Exactly as he said. I had an AX block in my SA Escort. Got it bored to 87mm. The 1700 Caterham 7's had AX blocks I believe. Sold the car now though. I now run a Cosworth N/A long throw crank and bored and sleeved to 94mm. Goes like stink. 1
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