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#1
27-11-12, 09:51
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Flathead Information
Hi Gina - the other part of your question is that the motor was a 95hp V8 with a bore of 3 3/16th inch and a stroke of 3 3/4 inch with a total piston displacement of 239 cubic inches. The motor was a 24 stud one.
 Bob
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Chevrolet Blitz Half-Track Replica - Finished and Running Ford F15 - unrestored Ford F15A X 2 - unrestored Website owner - salesmanbob.com Last edited by Bob Moseley (RIP); 27-11-12 at 09:53. Reason: Additional information 
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#2
27-11-12, 13:21
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#3
27-11-12, 21:26
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I found this link which is interesting but misses out on wartime production
http://www.35pickup.com/mulligan/fhtime.htm I was also of the understanding the "merc" engine was used in the Universal carrier and some Australian Blitz . I was hoping they were painted the deep green. Army colours on an engine is soooooo boring 
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#4
28-11-12, 00:16
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When they were new they were the Ford green but after a rebuild they were khaki, brown, etc. depending on where they were.
Externally the Merc engines were the same as the Fords.
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1940 Cab 11 C8 Wireless with 1A2 box & 11 set 1940 Cab 11 C8 cab and chassis 1940 Cab 11 C15 with 2A1 & Motley mount & Lewis gun 1940 Cab 11 F15A w/ Chev rear ends 1941 Cab 12 F15A 1942-44 Cab 13 F15A x 5 1942 cab 13 F15A with 2B1 box 1943 cab 13 F15A with 2H1 box 1943 Cab 13 C8A HUP 1944 Cab 13 C15A with 2C1 box 1943 Cletrac M2 High Speed Tractor MkII Bren gun carrier chassis x 2
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#5
02-12-12, 03:03
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One of my 81A heads was cracked but I managed to get a pair of 81T heads, cast into the top is C81T... Thus I presume they are Canadian production, however 'Ford USA' is also cast into the head, just to confuse matters.
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Alastair Lincoln, UK. Under Restoration: 1944 No2 MK2 Loyd Carrier - Tracked Towing 1944 Ford WOT6 Lorry The Loyd on Facebook Last edited by ajmac; 02-12-12 at 03:20.
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#6
02-12-12, 17:47
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Gina,
Since you said you were looking to reco a Ford flat head, consider this: The 3 3/16 bore 95hp engine as used in CMPs can be 'upgraded' internally by using some parts from a post-war 8BA engine: Crank - two oil holes per journal. I think this was a late pattern 99A crank that I used, but it's a while ago. 8BA rods with fixed shell bearings 4-ring pistons (early wartime ones had 3 rings ; the fourth was added near the bottom of the piston skirt, below the gudgeon) high pressure oil pump: they are visibly different, with an additional oil relief valve? cast into the side. Have it balanced by an engine reconditioner. For ease of maintenance, find a two-piece sump where the lower clutch cover bolts to the main sump. Much easier to work on the clutch with one of these installed. Externally, the engine looks the same, but it will work so much better. My blitz engine was a lot smoother for having used these parts and had them balanced. Mike C
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#7
02-12-12, 21:56
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I am very grateful for all of the excellent information here. Mike I will take you advice.
I am looking for someone to do the short motor for me. I need to sleeve two cylinders and do piston rods etc balancing and line bore the crank with new mains and rod bearings. If I can . I am looking to have an easy to run very reliable Blitz that I can take around without too much fuss. Gina
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#8
28-11-12, 13:03
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The "Ford" engine (91A) was 221ci 85hp and was used in cars, Ford trucks (incl MCPs) and Universal Carriers. The "Mercury" engine (99A) was 239ci 95hp and was used in all Blitzes (CMPs) and Aust LP Carriers.
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