INDUSTRIJSKI MOTORJI

ŠTEVILKE VIN / INDUSTRIJSKI MOTORJI

Datumi in številke motorjev iz VW-ove knjige Progresivne izboljšave
za uporabo pri določanju splošnega datuma industrijskih motorjev.

Date	122	124	126	Notes
10/20/52	00 001			Begin production 25HP DIN
06/06/53	00 537			Clutch balance marks added
10/16/53	01 654			Thicker fan blade
10/19/53	01 665			Governor lever slot lengthened, marked, better clamp
12/21/53	01 988			Begin of 30HP DIN/ 36HP SAE 6.1:1 CR
03/22/54	02 857			Starter handle thicker, solid tube
04/08/54	03 126			Single valve springs for 1500 and 1800 RPM-spec engines
06/25/54	04 399			paper flywheel gasket
08/31/54	05 091			Flat-top pistons, 6.6:1 CR
09/18/54	05 379			oil scraper edge above cam gear narrowed
10/01/54	05 475			small pulley is now 10.5mm instead of 20mm
11/15/54	06 070			temporary change to different alloy bearing shell # 2
01/04/55	06 677			intake manifold treated with special paint
01/13/55	06 841			induction hardened rocker arm shafts
02/17/55	07 472			28PCI carb gets nylon float
04/01/55	08 152			specified to get 10W oil for first oil filling.
04/05/55	08 216			Oil pump studs now AM 6Ax28, Intake manifold with cast, light metal jacket
04/29/55	08 681			Distributor drive gear changed from steel to bronze
06/11/55	09 667			Friction wheel now keyed onto shaft
08/11/55	11 145			“cap” of dipstick now brazed on.
08/16/55	11 220			many changes, incl. gland nut with needle bearing, hex nuts instead of socket cap screw for cylinder heads and the introduction of dual tailpipe muffler with preheat tube, and change from 36mm gen pulley nut to 21mm, and 225T1 spark plugs instead of 175T1.
10/14/55	12 502			crank bolts 6x28
01/27/56	14 774			spark plug inserts, now 11.84 mm instead of 11.34 mm
02/16/56	15 165			beaded cover plate for fuel pump
05/11/56	17 704			tighter oil pump bore tolerance
05/23/56	17 821			tighter piston tolerance, looser piston pin tolerance
06/18/56	18 928			oil inlet pipe shortened by 12mm
07/12/56	22 123			temp change to main bearing #2,.02mm thicker pressure side
08/14/56	22 352			finer mesh in oil strainer
08/16/56	22 815			oil pump modifications
09/26/56	24 249			main bearing #4 thinner wall thickness, smaller spec play
10/04/56	24 443			piston pin bushing now rolled from strip material
12/29/56	26 807			Oil cooler support between cooler, fan housing and crankcase, Oil strainer how has bell-shaped cap by oil pickup tube
04/29/57	31 322
05/02/57	32 927			Oil cooler now taller, more tubes and brazed instead of soldered
06/11/57	34 199			Main bearing #1 modified - 4 oil pockets at flywheel side
06/12/57	34 813			longer dowel pin for flywheel
07/02/57	35 470			crankcase reinforced at web bearing #2
07/08/57	35 240			working surface of cylinders reduced from 133.25 to 125.25mm
08/02/57	36 317
08/16/57	36 874			cam bearing to crank bottom joining face now 21mm.
10/23/57	38 221			iron reinforced asbestos exhaust flange gaskets
10/29/57	38 832			steel reinforced asbestos heater flange gaskets
01/02/58	41 202			three-layer rod bearing shells
03/03/58	42 425			bent arm in heater junction box
04/02/58	43 481			clutch - sprung cushion segment design
09/12/58	47 475			heli-coils for spark plugs intermittently installed
09/15/58	47 784			flywheel teeth chamfer omitted
10/28/58	48 519			crank pulley oil return thread now triple-thread, shorter exhaust valve guides
12/30/58	49 701			crank dowel pin drillings now 18mm deep, longer dowels used
02/02/59	51 402			heli-coils for spark plug thread now standard installation
03/09/59	52 660			muffler painted with zinc paint instead of black
03/26/59	53 201			4 flat surfaces on heater junction box operating lever
04/07/59	53 666			175T1 spark plugs return
04/23/59	54 401			Governor, lever for centrifugal secured by woodruff key and modified clamp.
05/13/59	54 647			muffler-to-heater junctions, conical asbestos seals held in position with clips.
05/13/59	54 916			new fan lock washer and modified nut
07/02/59	56 723			“tropical” type fan belt
11/13/59	61 085			exhaust valves stronger where stem meets head
08/05/60	073 001			Begin of 34HP DIN/ 40HP SAE,
08/18/60	073 150			camshaft end play now .06-.114mm
09/21/60	075 348			modified dipstick
11/08/60	077 656			Cooling fan now has 28 blades instead of 16
11/24/60	078 159			#4 main bearing has annular groove and oil drain groove
12/01/60	078 656			cam thrust bearing surfaces chamfered
01/25/61	080 250			Distributor drive shaft bore cut 5mm deeper, drive shaft now has thrust shoulder
01/30/61	080 657			Fan pulley reduced to 1.75:1 ratio (6.8” instead of 7”)
02/14/61	080 770			Exhaust clips have self-locking nuts
04/18/61	084 089			cone shaped countersink for pushrod tubes
05/15/61	084 245			modified exhaust valves
05/29/61	085 625			thicker pipes on exhaust pipes 1 and 3
06/15/61	086 726			pushrod tube seals now a white plastic instead of rubber
08/01/61	087 221			heater boxes now crimped together instead of screws
10/02/61	089 276			flywheel - junction between plate and hub reinforced
10/02/61	089 061			flatter exhaust valve heads
10/13/61	090 067			intake manifold preheat tubes thicker
10/30/61	090 501			valve cover/head now straight on top
10/30/61	090 886			steel gasket between crank/flywheel, conical sealing surface
11/11/61	091 879			crankshaft big end journal 4.5mm radius instead of bevel
11/17/61	092 265			oil filler gland nut now taller
11/21/61	091 357			thermostat temp lowered from 75-80° to 65-70° C
12/05/61	093 624			crankshaft now has oil drillings on reverse side
03/13/62	103 368			intake manifold now has zinc paint
03/21/62	103 990			rocker studs larger diameter
04/16/62	104 657			different clutch lining
05/03/62	105 095			oil strainer studs now 8G hardness
05/21/62			07 501	BEGIN PRODUCTION progressively coiled valve springs, one piece lifters
05/28/62	106 639			progressively coiled valve springs
06/05/62			07 566	cam shape modified
06/05/62	106 836			oil filler cap, now has copper clip
06/19/62	107 859			cam shape modified
07/31/62	108 729			one piece lifters
08/02/62	109 307			Oil cooler has perforated plate, preheat tubes larger diameter, fan housing is now wider, cylinder head intake ports larger
08/23/62	108 601			cylinder bore roughness changed
09/11/62	110 673			piston rings chamfered on inner edge
12/19/62	112 939			another rocker shaft modification
01/31/63	114 194			exhaust head valve angle decreased 1 degree
02/15/63	114 941			piston pin bearing now offset
02/28/63			07 969	piston rings chamfered on inner edge piston pin bearing now offset
03/14/63			08 006	sealing ring for exhaust pipe diameter decreased
06/10/63			08 115	exhaust head valve angle decreased 1 degree
06/11/63		02 501		BEGIN PRODUCTION?
06/20/63	119 465			crank pulley now arc welded instead of spot welded
06/21/63		02 550		thicker shoulder on oil cooler seal rockers, heads, pushrods modified due to valve angle change
07/03/63			08 316	rockers, heads, pushrods modified due to valve angle change
12/02/63		02 575		dished washer between gen pulley and nut
01/15/64			009 119	Rocker arms drilled for oil flow to adjusting screw, oil deflector rings added to valve stems, shorter valve guides
01/23/64		002 582		Rocker arms drilled for oil flow to adjusting screw, oil deflector rings added to valve stems, shorter valve guides progressively sprung valve springs
01/30/64	126 001			Rocker arms drilled for oil flow to adjusting screw, oil deflector rings added to valve stems, shorter valve guides #1 bearing journal play increased
02/03/64		002 602	009 228	#1 bearing journal play increased
02/19/64			009 232	rocker shaft stud modification
02/29/64			009 252	heavier connecting rods
03/05/64	127 243			rocker shaft stud modification
03/05/64		002 618		rocker shaft stud modification heavier connecting rods
03/20/64	128 230			Oil strainer plate held on with cap nuts, better gasket material
04/03/64	128 551			different connecting rod screws
04/09/64			009 412	Oil strainer plate held on with cap nuts, better gasket material oil pump cover gasket better material
04/15/64			009 378	oil pump cover gasket better material
04/17/64			009 496	different connecting rod screws
05/22/64		002 620		Oil strainer plate held on with cap nuts, better gasket material oil pump cover gasket better material different connecting rod screws
06/12/64	131 725		009 945	connecting rod torque lowered
06/15/64	131 651			rotocap valve rotating device for up to 2500RPM
07/01/64		002 621		connecting rod torque lowered
07/03/64		002 630		larger oil filler hole and cutout in web below
08/05/64	132 927			larger oil filler hole and cutout in web below
08/11/64	133 001			main bearing #1 clearance increased
08/13/64			010 171	rear main seal - different shape and material
08/13/64			010 168	larger oil filler hole and cutout in web below main bearing #1 clearance increased valve spring tension increased
09/11/64	133 921			rear main seal - different shape and material
10/01/64			010 418	oil intake pipe secured to sump plate stud
10/06/64		002 631		rear main seal - different shape and material oil intake pipe secured to sump plate stud valve spring tension increased square boss heads
10/07/64	135 938			oil intake pipe secured to sump plate stud
10/12/64			010 455	square boss heads
11/05/64	136 980			rocker arms - top oil drilling welded up
11/06/64			010 600	004” valve adjustment sticker added
11/18/64			010 611	rocker arms - top oil drilling welded up
11/30/64		002 639		rocker arms - top oil drilling welded up
11/30/64		002 637		004” valve adjustment sticker added
12/08/64	139 276		011 051	lifters- smaller diameter contact flange
01/04/65			011 103	rotocap valve rotating device for up to 2500RPM
01/13/65		002 728		lifters- smaller diameter contact flange
01/28/65	141 201			square boss heads - 004” valve adjustment sticker added
02/23/65	141 671			crankshaft bearing #2 larger oil drilling pocket
03/10/65			011 505	crankshaft bearing #2 larger oil drilling pocket
03/24/65		002 804		crankshaft bearing #2 larger oil drilling pocket
04/07/65	143 507			thick walled valve spring caps
08/02/65	146 330			cam bearing shells added, more cooling fins added different style pushrods
08/02/65		002 836	012 206	124A and 126A now 85mm pistons cam bearing shells added, connecting rods have bolts, more cooling fins added, different style pushrods
08/18/65	146 528	002 851		crank bearing #2, steel backed shells
09/20/65			013 767	crank bearing #2, steel backed shells
10/01/65	148 421	002 864	013 846	cover plate and governor drive changes, 122 different exhaust valves
11/02/65			014 023	radii of main bearings #1 and #3 rolled in
11/09/65		002 870		radii of main bearings #1 and #3 rolled in
11/15/65	149 400			3 upper studs now longer and sunk deeper into case
12/23/65		002 885		reinforced angle on front cover plate
01/04/66	150 262			Oil strainer plate, oil drain threads has shoulder for sealing oil pickup tube no longer angled on the end
01/06/66			014 288	Oil strainer plate, oil drain threads has shoulder for sealing oil pickup tube no longer angled on the end
01/09/66			014 651	piston pin bushing now steel backed lead bronze coated
01/13/66		002 902		Oil strainer plate, oil drain threads has shoulder for sealing oil pickup tube no longer angled on the end piston pin bushing now steel backed lead bronze coated
03/01/66	151 975		014 805	reinforced oil cooler mounting tabs on case
03/01/66	152 806			distributor drive shaft - teeth extend full length
03/02/66			014 733	distributor drive shaft - teeth extend full length
03/04/66		002 937		tighter connecting rod installation tolerance reinforced oil cooler mounting tabs on case
03/31/66		002 954		distributor drive shaft - teeth extend full length
05/04/66	154 093			O-ring on flywheel replaces metal gasket
05/09/66			015 401	O-ring on flywheel replaces metal gasket, longer gland nut
05/09/66	154 032			longer gland nut threads
05/13/66		003 140		O-ring on flywheel replaces metal gasket, longer gland nut
07/04/66		003 169		pushrods now slightly thicker and longer
08/05/66	155 969	003 172		Self lock/sealing nuts on center M12 case studs
08/15/66			016 254	Self lock/sealing nuts on center M12 case studs
08/24/66			016 351	pushrods now slightly thicker and longer
09/08/66	156 976			pushrods now slightly thicker and longer
10/05/66	157 265			crankcase now has 0-rings on M12 studs
10/06/66			016 995	crankcase now has 0-rings on M12 studs
10/17/66			017 099	larger contact area for M12 studs
10/20/66		003 191		crankcase now has 0-rings on M12 studs
10/31/66	157 980	003 197		larger contact area for M12 studs
11/22/66	157 226			oil pipe now seamless
12/01/66		003 204		oil pipe now seamless
12/13/66			017 664	oil pump cover gasket different
01/20/67	159 781		017 891	thicker thrust shoulder for bearing #3
03/10/67		003 214		thicker thrust shoulder for bearing #3, oil pump cover gasket
03/21/67			018 321	cross-drilled oil passenges on crankshaft
04/27/67	162 797			starter handle guide thicker metal
04/28/67	163 084			different sealing compound
05/02/67			018 888	different sealing compound
05/03/67		003 260		different sealing compound
06/15/67		003 278		M8 oil pump introduced
06/21/67			019 755	M8 oil pump introduced
06/26/67		003 268		cross-drilled oil passenges on crankshaft
06/28/67	164 051			M8 oil pump introduced
09/20/67			020 364	starter handle guide thicker metal