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January 18, 2021

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History

From https://it.wikipedia.org/wiki/FBM_(azienda)

Moto F.B.M. (Fabbrica Bolognese Motocicli) 224 Via Battindarno, Bologna, Italy was founded in 1951 by Vittorio Minarelli and Franco Morini, nephew of Alphonso Morini. The company FBM (1951-1956) produced only motorcycle engines, two-stroke (2T) 50, 75, 100, 160 and four-stroke (4T) 100, 125, 160, 175 and 200 cc.

Testi and Sachs helped Minarelli: Since 1933 Testi was a bicycle company owned by Umberto Testi. Umberto’s son Erio Testi worked in his fathers bicycle factory. In 1953 Umberto sent his son Erio Testi to Austria to visit Fichtel and Sachs, and learn about small two stroke engines. After Erio returned, he was hired by Moto FBM, and transferred the Sachs two stroke moped engine manufacturing knowledge to his friend Vittorio Minarelli. That’s why early 60’s Morini, Minarelli and Sachs pistons have the same dimensions.

P-48: In 1954 the P-48 Pettirosso (red breast) was born, a 50cc 2-stroke 2-speed cable-shift engine, destined to become the engine for most popular mopeds in Europe, and later the P3 3-speed version.

Minarelli’s assistant Erio Testi helped develop those FBM moped engines, then later formed his own successful company. That is why Testi bikes all have Minarelli engines.

FBM split: In 1956 Moto FBM (Fabbrica Bolognese Motocicli) split into Fabbrica Bolognese Minarelli and Motori Morini Franco.

F. B. Minarelli (Fabbrica Bolognese Minarelli) 23 Via Melozzo da Forlì, Bologna, Italy was only four blocks away, formed in 1956 from the separation of Minarelli and Morini. The bike maker clients were divided equally in volume, Morini got Beta, Minarelli got the others.

From Wikipedia: In 1956 Minarelli switched to exclusively manufacturing two-stroke engines, in a 20,000 sq. ft. purpose-built factory. It employed 20 technical staff and produced 70 engines a day. These were sold to companies in Italy, other parts of Europe and South America.

Motori Minarelli: In 1967 the company changed its name from F.B. Minarelli to Motori Minarelli, and opened a new plant about 5 miles north, in Calderara di Reno. By the 1970s engine production had reached 250,000 units a year.

’72 Minarelli GP50

3-time Italian champ
and 12 world records

Minarelli successfully competed in Grand Prix motorcycle racing with Spanish rider Ángel Nieto winning 125cc world championships in 1979 and 1981.

In 1990 the company began a business relationship with Yamaha. Five years later it employed 350 people and engine production had reached 450,000 units a year.

In 2002, following changes in the world motorcycle market, Motori Minarelli became a member of the Yamaha Group.

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 most of the 2000’s. 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.

List of manufacturers using Minarelli engines, US-models in red:
AMF, Accossato, Aprilia, Aspes, Atala, Baretta, Benelli, Beta, Bianchi, Bimotor, B.M., Carabela, Cimatti, Concord, Cosmo, Casalini, C.F., Chiordo, Clipic, Cotton, Empolini, Everton, Fantic Motor, F.M.B., Gabbiano, Gadabout, General, Gimk, Gitane, Giulietta, GMK, Record, Gerosa, Gitane, Indian, Intramotor, Intramotor Gloria, Italjet, Lazer, Legnano, Macal, Malanca, M.B., Mebea, Milani, Moto BM, Moto Meteora, Motobee, Motorhispania, Motomarina, Motron, Mondial, Moto Bimm, Moto Gori, MV Agusta, MZV, Oemmeci, Omer, Otus, Pacer, Peripoli, Power, Rieju, Rocvale, Romeo, Safari, Silver Foxi, Snark, Sulky, SWM, Technomoto, Telaimotor, Tempo, Testi, Torpado, Yankee Peddler

Minarelli Magneto Parts List

M2-25 spark plug Marelli CW 225 = B5HS
11.0132.9 spark plug Bosch W145T1 = W8A = B5HS
11.0133.9 spark plug Bosch W175T1 = W7A = B6HS
11.0134.9 spark plug Bosch W225T1 = W5A = B7HS

82.0001.6 points Bosch = M31
82.0004.6 points CEV 04221 = M18
82.0006.6 points Ducati = M14
82.0008.6 points CEV 04229 = M14

82.0130.6 condenser Bosch = M32 screw-post
82.0131.6 condenser CEV 7365 = M17
82.0132.6 condenser Ducati ∅17.9 = M17T = modern M17

82.0180.6 greasing felt Bosch
82.0181.6 greasing felt Ducati
82.0182.6 greasing felt CEV 13448

82.0101.6 cam adjuster CEV MMI 6050

82.0428.6 base plate CEV 13471 80 x 80
82.0429.6 base plate CEV 13373 80 x 94
82.0440.6 base plate Ducati

82.0014.6 stator assy Bosch for 0212.005.027
82.0018.6 stator assy Ducati for 31.02.30, 31.02.39
82.0019.6 stator assy Ducati for 31.02.74
82.0036.6 stator assy Ducati for 31.02.77
82.0038.6 stator assy CEV 04266 for 6932
82.0046.6 stator assy Ducati for 31.12.59
82.0047.6 stator assy Ducati for 31.12.37

82.0202.6 flywheel ⇒ Bosch 0212.005.027
82.0212.6 flywheel ⇐ Ducati 31.02.30
82.0214.6 flywheel ⇐ Ducati 31.02.39
82.0215.6 flywheel ⇐ Ducati 31.02.74
82.0221.6 flywheel ⇐ CEV 6948
82.0231.6 flywheel ⇐ Ducati 31.02.77
82.0233.6 flywheel ⇒ CEV 6932
82.0245.6 flywheel ⇐ Ducati 31.12.37
82.0252.6 flywheel ⇐ Ducati 31.12.59

minarelli# flywheel stator lights
minarelli# dir id od od wires watts Minarelli V1
00.0000.0 ⇒80 110 94 ♦♦♦ 6V 25/10 CEV 6876 0000 V1-US early-points
00.0000.0 ⇒80 103 94 ♦♦♦ 6V 25/10 CEV 6861 0000 V1-US early-points
00.0000.0 ⇒80 103 94 o♦♦ 6V 18/00 CEV 6923 0000 V1
00.0000.0 ⇒80 103 94 ♦♦♦ 6V 25/10 CEV 6940 0000 V1-US
82.0001.9 ⇒80 103 80 o♦♦ 6V 18/00 Ducati 31.03.61 V1
82.0002.9 ⇒80 103 80 o♦♦ 6V 18/00 0212.005.027 0 V1 V2 G1
82.0004.9 ⇒80 103 80 o♦♦ 6V 18/00 CEV 6931 0000 V1 V2
82.0033.9 ⇒80 103 80 ♦♦♦ 6V 28/10 CEV 6932 0000 V1-US
82.0029.9 ⇒80 103 80 ♦♦ 6V 18/00 Ducati 31.03.73 V1 G1R
00.0000.0 ⇒80 103 80 ♦♦♦ 6V 25/10 0212.010.005 0 V1-US
minarelli# dir id od od wires watts Minarelli P1
00.0000.9 ⇒80 110 94 o♦♦ 6V 18/00 CEV 6819 0000 P1 early-points
00.0000.9 ⇒80 110 94 ♦♦ 6V 18/00 CEV 6819E 000 P1 early-points
minarelli# dir id od od wires watts Minarelli P3
82.0000.9 ⇐80 110 94 o♦♦ 6V 18/00 CEV 6067 0000 P3 EZ early-points = M2-19
82.0012.9 ⇐80 110 94 ♦♦ 6V 18/00 Ducati 31.02.30 P3 P4S P4V W3 =912301?=M16-12?
82.0007.9 ⇐80 103 94 o♦♦ 6V 18/00 CEV 6925 0000 P3 P3N? = 912201?
82.0028.9 ⇐80 103 94 ♦♦ 6V 18/00 CEV 6925E 000 P3
minarelli# dir id od od wires watts Minarelli P4
82.0000.9 ⇐80 110 94 o♦♦ 6V 18/00 CEV 6068 0000 P4 early-points
82.0000.9 ⇐80 110 94 o♦ 0V 00/00 Ducati 31.02.32 P4 kit = M42-208
82.0000.9 ⇐80 110 94 o♦♦ 6V 18/00 Ducati 31.02.37 P4 kit = M42-208
82.0014.9 ⇐80 110 94 ♦♦ 6V 18/00 Ducati 31.02.39 P4 P4V P4E P6 P6/4 P6R W3 =912401
82.0015.9 ⇐80 110 94 ♦♦ 6V 18/00 Ducati 31.02.74 P6 potenza?
minarelli# dir id od od wires watts Minarelli P6
82.0000.9 ⇐80 110 94 ♦♦♦ 6V 25/10 Ducati 31.12.38 P4S-US P6CS-US
82.0021.9 ⇐80 103 94 ♦♦ 6V 25? 0 CEV 6948 0000 P4? P6?
82.0031.9 ⇐80 110 94 ♦♦ 6V 18? 0 Ducati 31.02.77 P4? P6?
82.0046.9 ⇐80 110 94 ♦♦ 6V 00/00 Ducati 31.12.54 P3?
82.0045.9 ⇐80 110 94 ♦♦ 6V 00/00 Ducati 31.12.37 P4? P6?
82.0052.9 ⇐80 110 94 ♦♦ 6V 00/00 Ducati 31.12.59 P3? P4? P6?
82.2103.9 ⇐80 103 94 ♦♦ 6V 00/00 Dansi 101.883 P6 electronic

Minarelli Cylinders

years 0 Minarelli# bore exhaust ∅44 40x40 ∅6 studs
’57-70? M2-5 000 38.0 screw 28 iron P3 P3N P4 says C
’60-68? A20-9 00 38.0 screw 32 iron P3 Sport
’66-67? M24-13 0 38.8 screw 32 iron P4SP-iron (P4S)
’67-71? M35-8 00 38.0 screw 28 iron EZ 000000 says A.E 1
’68-71? M35-10 0 38.8 screw 28 iron EZ potenziato says A.E 1
’72-82? 19.0304.0 38.8 screw 28 iron G1 000000 says S40
’68-79? 19.0315.0 38.8 screw 28 iron P3S P4A 0 says sport quadro
’69-79? 19.0306.0 38.8 screw 32 iron P4V P4A P6 W3 P6/4 sp. qu.
years 0 Minarelli# bore exhaust ∅47 48x48 ∅7 studs
’00-00? 19.0314.0 38.8 3-bolt 32 iron P4E
’00-00? 19.0002.0 38.8 3-bolt 32 ir/al P4SP-alum (P4E) says SP
’00-00? 19.0036.0 38.8 3-bolt 32 alu. P6R 0000 radiale chromato
’00-00? 19.0038.0 38.8 3-bolt 32 ir/al P4R P6R 0 says radiale
’00-00? 19.0039.0 38.8 3-bolt 32 ir/al P4CS P6CS
’79-85? 19.0046.0 38.8 3-bolt 32 ir/al G1R 0000 says S40 radiale
years 0 Minarelli# bore exhaust ∅40 46x46 ∅6 studs
’69-80? 19.0311.0 38.8 2-bolt 00 iron V1 V1N V2
’76-80? 19.0312.0 38.0 2-bolt 00 iron P1 V1-US-1hp
’77-80? 19.0032.0 38.8 2-bolt 00 alu. V1A
’79-82? 19.0320.0 38.8 2-bolt 00 iron V1P C2
’79-86? 19.0323.0 38.7 2-bolt 00 iron V1P-US C2-US
’87-89? 19.0000.0 40.3 2-bolt 00 iron V1L-US
’82-87? 19.0000.0 40.3 2-bolt 00 ir/al V1H-US
’88-90? 19.0528.0 40.3 2-bolt 00 alu. V1HL

minarelli# 0 holes cyl. studs on models Base Gaskets
53.0302.0 ∅6 ∅44 iron 40×40 P3 P3S P4 P4S P4E P4V P4A P6 P6/4 EZ G1 W3
53.0304.0 ∅6 ∅40 iron 46×46 P1 V1 V1N V1P V1A V1H V1L V1HL V2 C2
53.0304.0 ∅6 ∅42 iron 46×46 V1-Carabela
53.0306.0 ∅7 ∅47 alum 48×48 P4S P4E P4CS P6CS P6R G1R

minarelli# ID 0 OD thick on models Head Gaskets
M2-11 00 00.0 00.0 0.0 P3 P3N P4 P4 Sport
53.0412.0 40.0 47.5 0.7 P3S W3-QM
53.0417.0 40.0 55.0 0.7 P4E P4CS P6CS
53.0430.0 40.0 58.0 0.5 P6R

minarelli# on models Cylinder Studs
49.0509.0 M6 x 109 P3 P4 P4S EZ = M2-13
49.0509.0 M6 x 109 P3S P4S P4V P6 W3 G1
49.0510.0 M6 x 136 V1 V1A V1HL
49.0513.0 M7 x 118.5 P4E P6R G1R

minarelli# on models Gasket Sets
71.0601.0 EZ
71.0603.7 P3N, P3S
71.0604.7 W3, QM
71.0610.7 P4 Sport, P4V
71.0611.7 P4-SP iron
71.0613.7 P4-SP alum
71.0616.7 V2
71.0618.7 V1, V1N, V1P
71.0622.7 P4A, P6
71.0637.7 P4E
71.0642.7 V1A, V1H
71.0645.0 G1
71.0653.7 P6R
71.0656.7 C2