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I need the back head for a 42 WLC .This is a #5 aluminum head
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George is hooked on OD 5 window DT969 8 ton Fruehauf trailer M2A1Halftrack ,CMP #11 F15A1 #13 F15A1 RAF Fordson Tractor, 42 WLC HD No.2MK11 CT267514 center CB24713 bottom hull25701 ,No.2 MK2 parts MK1 10128 ,(2) MK1 ,Parts Hull9305 .Hull 10407 Hull plate # 7250 all have walk plate on back steps 1917 Patent modle amphibious army tank Last edited by George McKenzie; 07-11-16 at 00:58. |
#2
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Check the number that is stamped on the right side of the heads, that will be the compression ratio. There will be a 5 or 6 stamped in the lower part of the head.
5's can be converted to 6 by shaving .120 off the bottom, and watch the valve clearance. Use the copper head gaskets not the Teflon as they are too thick and will lower the compression ratio. WLC and WLA bikes came with # 5 heads.
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Roberta Jayne Melville CD II QJ MK I * universal carrier 1942 WLC Harley under restoration 1957 M38A1 jeep R.E.L. optical equipment Military manuals Field phones MK II 19 set (needs work) 4 MK III W-19 sets AN/PRC-9 CPRC-26 WS-29 componets WS-38 AFV WS-38 MK III WS-48 with generator WS-58 MK I MK V heliograph |
#3
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If you go to a #6 head it will be a bugger to start and have a short engine life. Copper gaskets can be hard to get a good seal .
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George is hooked on OD 5 window DT969 8 ton Fruehauf trailer M2A1Halftrack ,CMP #11 F15A1 #13 F15A1 RAF Fordson Tractor, 42 WLC HD No.2MK11 CT267514 center CB24713 bottom hull25701 ,No.2 MK2 parts MK1 10128 ,(2) MK1 ,Parts Hull9305 .Hull 10407 Hull plate # 7250 all have walk plate on back steps 1917 Patent modle amphibious army tank |
#4
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Ia place called nothing but fun motorcycle has heads .I have dealt with them fast service
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#5
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George,
Beware of the reproduction heads - I understand those made in Europe are ok but the Indian parts look good but are porous & laminated castings. I have an extra OEM 5 rear head that has been milled .060 to clean it up. PM if you are interested. I was told by experienced HD mechanics that the aluminum heads used the asbestos fibre gaskets & the iron heads used the copper gaskets. It seems it is a heat transfer situation. I used NOS fibre gaskets with good success. Jack |
#6
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I'll check with my mechanic The copper gaskets won't crush down as much as the asbestos ones so it might match my front new head as it is not milled if I use a copper gasket at the back and a asbestos gasket at the front . It is easier to get a good seal with the asbestos gasket than the copper ,
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George is hooked on OD 5 window DT969 8 ton Fruehauf trailer M2A1Halftrack ,CMP #11 F15A1 #13 F15A1 RAF Fordson Tractor, 42 WLC HD No.2MK11 CT267514 center CB24713 bottom hull25701 ,No.2 MK2 parts MK1 10128 ,(2) MK1 ,Parts Hull9305 .Hull 10407 Hull plate # 7250 all have walk plate on back steps 1917 Patent modle amphibious army tank |
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