Welcome. Myron’s Mopeds carries some Minarelli V1 moped engine parts. Things like pistons and rings are already offered in Parts/By Type. Click to enlarge images.
Motori Minarelli of Italy made great little one-speed automatic 49cc moped engines, fan cooled. Center, the earliest (1975-1977) Minarelli V1 engines had a metal (aluminum) fan cover 5430, with three 6mm bolts 5450, a plastic fan 5410, and an aluminum fan cover base 5390. Left, the later (1977-1979) Minarelli V1 engines had a grey plastic fan cover 5440, with four 4mm phillips bolts 7050 (that often rust solid), the same fan 5410, and a plastic fan cover base 5400. Right, the latest V1 (1979-1985) had a slightly smaller black plastic fan cover 5445, with the same bolts 7050, a different plastic fan 5415, and a plastic fan cover base 5405. None of the fan parts interchange. Furthermore, most of the fans made ended up breaking off all their fins from hitting a damaged or loose fan cover, so the fans are very scarce. The V1 engines had either 38.8mm 4540, 38.7mm 4535, or 38.0mm 4500 (20mph version) pistons.
Besides the fan cover differences, there was an early “stub plane” style crankshaft 4410, and a later “cone” style crankshaft 4460. Those also had different clutch housings (6200 cone and 4940 stub) and three different clutch nuts (6270 cone right thread, 6275 cone left thread, 5040 stub).
Later, in the early 1980′s, Minarelli introduced the V1L, 49cc one-speed automatic with a crankcase two-petal reed valve. The piston size changed from 38.8mm 4640 to 40.3mm 4641. So the crank changed to a shorter stroke, from 4460 (Cone style crankshaft) to 4461 (V1L short stroke crankshaft). The cylinder was still cast iron.
Still later, in the mid 1980′s Minarelli introduced the V1HL, 49cc one-speed automatic with the same case reed, a new aluminum cylinder with more fins, a bigger head also with more fins, and a needle bearing on the piston pin instead of a brass bushing. The V1HL did not have a cooling fan. Instead it had an electric start mechanism where the fan was. The Minarelli V1HL electric start high torque one speed was used on mid to late 1980′s Motomarina three wheeled mopeds.
By the late 1980′s, mopeds were out of style, and scooters were popular. Minarelli made 49cc two-stroke scooter engines with variators all through the 1990′s, and still does today. Minarelli has always been behind the scenes, making engines for “everybody”, but not advertising or taking much credit. Many people who own certain scooters don’t know their engine is made by humble and wise Minarelli.
Minarelli V1 Engine – Parts List
Below is the Rosetta Stone of Minarelli V1 parts. This was from Marina Mobili’s Moped Mart #688 Nov 1988. It’s a complete list of Minarelli V1 parts, showing upgrades or substitutions in blue text. Following the list, after you scroll down, are the Minarelli parts actually for sale. See below.
Dia# Part# Description
xxxx 2820 Oil seal set
4240 4240 Intake gasket
4440 4440 Connecting pin4450 4455 Large end bearing
4460 4410 Stub plane crankshaft
4460 4460 Cone crankshaft assy
4470 4470 Small end bushing
4470 4475 Small end bearing
4480 4480 Piston pin
4490 4490 Piston pin clip
4540 4500 38.0mm piston kit
4540 4510 38.2mm piston kit
4540 4520 38.4mm piston kit
4540 4530 38.6mm piston kit
4540 4535 38.7mm piston kit
4540 4540 38.8mm piston kit
4540 4550 39.0mm piston kit
4540 4560 39.2mm piston kit
4540 4570 39.4mm piston kit
4540 4580 39.6mm piston kit
4540 4590 39.8mm piston kit
4640 4600 38.0mm ring set 4640 4610 38.2mm ring set 4640 4620 38.4mm ring set
Dia# Part# Description 4640 4630 38.6mm ring set
4640 4635 38.7mm ring set
4640 4640 38.8mm ring set
4640 4650 39.0mm ring set
4640 4660 39.2mm ring set
4640 4670 39.4mm ring set
4640 4680 39.6mm ring set
4640 4690 39.8mm ring set
4710 4710 Crankshaft oil seal
4720 4720 Flywheel key
4740 4740 Stator plate screw
4750 4750 Flywheel nut
4760 4760 Drive shaft
4770 4770 Drive shaft bearing 4780 4780 Shim 4790 4790 Oil seal 4820 4800 9 tooth sprocket 4820 4810 10 tooth sprocket 4820 4820 11 tooth sprocket
4820 4822 12 tooth sprocket 4820 4823 13 tooth sprocket 4830 4830 Washer 4840 4840 Nut 4850 4850 Shim 4860 4860 Snap ring 4870 4870 Drive clutch Dia# Part# Description 4880 4880 Clutch drum & gear 4890 4890 53 tooth gear 4900 4900 Clutch drum 4950 xxxx Use 4960 4960 4960 Clutch shoe complete 4970 4970 Clutch shoe plate 4980 4980 Clutch shoe plate screw 4990 4990 Brake pad spring 5000 5000 Brake pad 5010 5010 Clutch shoe spring 5020 5020 Spring retaining pin 5030 5030 9mm washer 5060 5060 Plate return spring 5070 5070 Return spring cap 5080 5080 Clutch pressure plate 5090 5090 Pressure plate lock ring 5100 5100 Clutch lever long 5100 5105 Clutch lever short 5110 5110 Clutch lever O-ring 5120 5120 Return spring for 5100 5120 5125 Return spring for 5105 5130 5130 Lever set screw 5140 5140 Set screw washer Dia# Part# Description 5150 5150 Cable retaining bolt 5160 5160 Cable bridge 5170 5170 Cable adjuster 5180 5180 Upper pressure leaf 5190 5190 Lower pressure leaf 5200 5200 Half case – clutch side xxxx 5202 Engine case set 5220 xxxx Sold in 5202 only 5230 5230 Center case gasket 5240 5240 Center case dowel 5250 5250 Bolt 5260 5260 Clutch cover grey 5260 5262 Clutch cover black 5270 5270 Clutch cover gasket 5280 5280 Oil filler cap w/vent 5290 5290 Oil fill gasket 5300 5300 Oil drain bolt 5310 5310 Oil drain gasket 5320 5320 Bolt 5360 xxxx Specify magneto 5370 5370 Wire guide 5380 5380 Wire guide 5390 5390 Aluminum base mount 5390 5400 Plastic (early) base mount 5390 5405 Plastic (late) base mount Dia# Part# Description 5410 5410 Fan (early) 5410 5415 Fan (late) 5420 5420 Fan screw 5430 5430 Aluminum fan cover 5430 5440 Plastic (early) fan cover 5430 5445 Plastic (late) fan cover 5450 5450 Aluminum cover bolts 5450 7050 Plastic cover bolts 5460 5460 Cylinder base gasket 5480 5470 38.0mm cylinder 5480 5475 38.7mm cylinder 5480 5480 38.8mm cylinder 5490 5490 Cylinder head gasket 5500 5505 Engine head 5510 W8A Spark plug 5520 5520 Spark plug boot 5530 5530 Cylinder stud 5540 5540 Cylinder stud washer 5550 5550 Cylinder stud nut 5560 5560 Connecting rod 5570 5570 Shim Dia# Part# Description 5600 5580 12mm side manifold 5600 5585 12mm front manifold 5600 5590 9.0mm side manifold 5600 5595 9.0mm front manifold 5600 5600 7.25mm side manifold 5600 5605 7.25mm front manifold 5610 5610 Manifold bolt 5620 5620 Wire guide 5630 5630 Grommet 5640 5640 Carburetor SHA 14-9 5640 5650 Carburetor SHA 14-12 5660 5660 Air filter cover 5670 5670 Exhaust gasket 5680 5680 Pancake exhaust 5690 5690 Muffler retaining bolt 5700 5700 Washer 5710 5710 Idler 5720 5720 Idler pin 5730 5730 Shim 5740 5740 Pedal shaft 5750 5750 Pedal gear 5760 5760 Side gear 5770 5770 Spring 5780 5780 Spring pin guide 5790 5790 Shim 5800 5800 Pedal shaft circlip Dia# Part# Description 5810 H132 Right pedal crank 5820 H131 Left pedal crank 5830 H134 Pedal crank pin 5840 5840 Spring leaf bolt 5850 5850 Pedal shaft cap 5860 5860 Lockwasher 5870 5870 Exhaust stud xxxx 5890 Engine gasket set 6000 6000 Snap ring 6020 6020 Cone clutch shim 6020 5570 Stub plane clutch shim 6040 6040 Cone clutch bushing 6180 6180 Cone clutch complete 6180 4930 Stub plane clutch comp. 6200 6200 Cone clutch housing 6200 4940 Stub plane clutch hous. 6270 6270 Cone clutch nut r.h. 6270 6275 Cone clutch nut l.h. 6270 5040 Stub plane clutch nut Minarelli 6180 Cone Clutch Complete, new $70
This is not the “stub plane” type. No key groove. Taper fit. Clean tapered surfaces first and tighten nut fully to not slip.
more to follow …
