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ryanheacox · 03-05-2019, 01:10 PM

From fordgarage.com;

An 'F' in the prefix of a British-built engine indicates the small bore engine, not whether it was for a RHD or LHD chassis. Large bore British-built engines did not carry the 'F' in the engine number prefix, nor did RHD English-produced chassis. The 'AF' in the engine number and in the vehicle Model name indicated only that the British-produced vehicle had a small bore 14.9 HP (R.A.C.) engine.

http://www.fordgarage.com/pages/ABenginenumbers.htm

There were pictures I saw recently about the differences between the small and big bore engines but I haven't been able to find the post here yet. Definitely sounds like you have the small bore engine though.

03-05-2019, 01:10 PM	#4
ryanheacox Senior Member Join Date: Apr 2013 Location: Northwest CT Posts: 1,092	Re: AF700441 is this a big bore engine? From fordgarage.com; An 'F' in the prefix of a British-built engine indicates the small bore engine, not whether it was for a RHD or LHD chassis. Large bore British-built engines did not carry the 'F' in the engine number prefix, nor did RHD English-produced chassis. The 'AF' in the engine number and in the vehicle Model name indicated only that the British-produced vehicle had a small bore 14.9 HP (R.A.C.) engine. http://www.fordgarage.com/pages/ABenginenumbers.htm There were pictures I saw recently about the differences between the small and big bore engines but I haven't been able to find the post here yet. Definitely sounds like you have the small bore engine though.