Minarelli P4 and P6

Contents:

00 years  model  0  carb   covers    case
1956 part numbers, F.B. Minarelli
01. ’63-66? P4 0000 ∅12    round♦   round
10.
’66-67? P4S 000 ∅19    round♦   round
01.
’66-70? P4SS 00 ∅20    round♦   round
02. ’65-70? P4-55 0 ∅20    round♦   round (kits)
02. ’65-70? P4-50 0 ∅20    round♦   round (racing)
02. ’65-69? P4-60 0 ∅20    round♦   round (racing)
1967 part numbers, Motori Minarelli
03.
’67-70? P4S  12 or 19    round♦   round
03.
’69-72? P4S-70  ∅19    round♦   round
04.
’69-73? P6 0 12 or 19 angular♦   angular
05. ’70-77? P6-4 12 or 19 angular♦   angular (pedals)
1970 part numbers
06.
’71-73? P4V00 ∅12 angular♦   round
07. ’71-77? SP6 00  ∅20 angular   angular (racing)
08. ’71-79? P4E  12 or 19 angular   angular

08.
’73-76? P4E-70  ∅19 angular♦   angular 
08.
’73-76? P6E-70  ∅19 angular♦   angular 
99.
’72-80? P4CS    ∅12 angular♦ angular 
08.
’73-79? P6CS    ∅12 angular♦ angular
10. ’74-82? P4R 00 ∅12 angular♦ angular
09. ’74-80? P6R 00 ∅12 angular♦ angular
11. ’78-82? P6CC    ∅18 angular♦ angular♦

 

Sources:

Piccolo Giolielo – Tecnica Minarelli P4 P6 50cc by Luigi Corbetta
Motoclisimo D’Epoca 4/2003 at  fantichistisettanta.forumfree.it.

Catalogo Ricambi Generale 1979 by Motori Minarelli
at  passione50cc.forumfree.it.

Tecnica Motori Minarelli 50cc P4 ovalino, Monza, Cadetti, Cross
by motomorini173 at  moto gran premio e 50ini.

Eclates des Moteurs collected by The Minarellist   
parts for sale, free pdf manuals at  Le Minarelliste.

 

 

 



1. 1963-70 Minarelli P4, P4S

P4 has a 4-speed, foot-shift, manual clutch, kick start.

’63?-66? Minarelli P4 (ovalino) 47.7 cc (38.0 x 42)
1956# Minarelli# qty MMI# price  description.
00 A2-8 51.0132.7 1 4470 $5.00 piston pin bushing ∅11.7 ∅15 x 13
00 A2-8 51.0132.7 1 4470  none  (must be reamed after installation)
00 A2-9 56.0601.0 1 4480 $9.50 piston pin Ø12.00 x 31.5
0 A2-10 03.0213.0 2 4490 $1.00 piston pin clip  Ø12

0 A2-11 71.0405.0 1 4500 $65.0 piston kit 38.0 dome top, 2.5 rings
0 A2-11 71.0455.7 1 4520 $65.0 piston kit 38.4 2nd oversize
0 A2-12 00.0000.0 2 0000 $11.0 piston ring each 38.0 x 2.5 GN
0 A2-12 71.0802.0 1 4600  none  piston ring set
0A2-14 00.0000.0 1 0000  none  pinion washer
0 A2-16 49.0124.8 1 4720  none  key 3.0 x 3.7  use A1-25 #M85
0 A2-17 49.0312.0 1 4750 $7.00 flywheel nut M10-1.25 x 14 hex15
0 A2-19 51.0203.9 2 4770 $6.00 right crank bearing 15-35-11 #6202
0 A2-20 53.0506.9 2 4710 none  crankshaft seal 17-35-8
0 A2-21 00.0000.0 1 0000  none  right crank seal 15-30-8 use 15-30-7
0 A2-21 49.0000.0 1 0000 $7.00 right crank seal 15-30-7
0 A2-25 00.0000.0 1 0000  none  pinion key
A24-10 38.0005.0 1 0000  none  crankshaft, pork chop, width 32

 A24-10 38.0017.0 1 0000  none  (rod end Ø14.95 x 13 for bushing)
A24-11 00.0000.0 1 0000  none  right crank half
A24-12 00.0000.0 1 0000  none  left crank half
A24-13 00.0000.0 1 0000  none  crank pin (asse) Ø16 x 31
A24-14 00.0000.0 1 0000  none  roller bearing Ø16 Ø22 x 12
A24-15 38.0060.7 1 0000  none  connecting rod with bushing
0A42-1 00.0000.0 1 0000  none  pinion gear 13T
0 A42-2 00.0000.0 1 0000  none  pinion gear nut

00M2-5 19.0315.0 1 0000  none  cylinder iron 38.0 exhaust M28
0
M2-10 53.0302.0 1 0000 none  base gasket ∅44 40×40
0M2-13 49.0509.0 4 0000 $3.50 cylinder stud M6 x 109 (110)
0M2-19 82.0000.0 1 0000  none magneto ⇒
0M2-19 82.0001.9 1 0000  none 2-wire, internal spark coil, 6V 18w

0M2-27 00.0000.0 1 0000  none exhaust (scarico) M28 thread
0M2-40 00.0000.0 1 0000  none  head 38.0 (testa) small rounded
0M2-44 00.0000.0 1 0000  none intake pipe 12 id x 18 od
0M2-45 00.0000.0 1 0000  none  carb SHA14/12, F27 cover use 15.0024.9
0M2-45 15.0024.9 1 5650 $70.0 SHA14/12 jet 52  US 2.0 hp
0M2-45 00.0000.0 1 0000 $0.00 ∅18 sleeve, no air cover, no cable pipe
M00-00 31.0010.6 1 0000 $12.0 air cover F27 large sloping
M00-00 49.0018.0 1 5880 $4.00 air cover clamp with screw
M00-00 15.0360.6 1 6360 $5.00 6109 fuel filter
M00-00 15.0490.6 1 6430 $2.00 6123 float gasket
M00-00 15.0601.6 1 6530 $7.00 9249 inlet banjo black plastic angled out
M00-00 15.0701.6 1 6550 $10.0 2838 float needle
M00-00 15.0000.6 1 0000 $0.00 for full list see Carb/Dellorto/SHA14

The pinion gear has a ∅13 cone center hole.

 


 


’66-67? Minarelli P4S Sport (ovalino)
49.6 cc (38.8 x 42)
1956# Minarelli# qty MMI# price
   same as P4 except:
0 A24-7 68.0115.0 2 0000 $10.0 piston ring Ø38.8 x 1.5 GN
0 A24-7 71.0805.0 1 4640  none  piston ring set

A24-31 71.0410.0 1 4540 none  piston kit 38.8 ball top
 A24-31 71.0410.0 1 4540 none  piston kit 38.8 GOL 0034
 A24-31 71.0460.7 1 4550 $73.0 piston kit Ø39.0 (1st oversize)
 A24-31 71.0460.7 1 4560 none  piston kit Ø39.2 (2nd oversize)
 A24-31 71.0460.7 1 4570 $73.0 piston kit Ø39.4 (3rd oversize)
0M2-13 49.0509.0 4 0000 $3.50 cylinder stud M6 x 109 (110)
M16-12 00.0000.0 1 0000  none  magneto 6V 18w internal spark
M24-12 77.0152.0 1 0000  none  head (testa) 38.8 Sport QUADRO
M24-13 19.0306.0 1 0000  none  cylinder iron 38.8 M32 ex thread
M24-15 00.0000.0 1 0000  none  intake pipe 19 id x 24 od

M24-21 00.0000.0 1 0000  none  exhaust (scarico) M32 thread
M24-25 00.0000.0 1 0000  none  carburetor Dellorto UA19S

 

P4S changes: The carburetor and intake changed from Dellorto SHA 14/12 to UA19S side-float type. The cylinder, piston and rings changed changed from 38.0 x 2.5 to 38.8 x 1.5. The compression ratio increased from 7.7 to 9.0. The head changed from small round fins M2-40 to bigger straight fins M24-12. The exhaust nut thread changed from M28 to M32. The nut goes over the pipe, so the pipe is smaller than that.

’66-70? Minarelli P4SS Super Sport (ovalino) 49.6 cc (38.8 x 42)
1956# Minarelli# qty MMI# price
   same as P4S except:
0A24-32 38.0000.0 1 0000  none  crankshaft, full circle, width 32, cone 13

0 A24-10 38.0000.0 1 0000  none  (rod end Ø15.00 x 14 for bearing)
A42-101 00.0000.0 1 0000  none  rod bare (biella)
A42-104 51.0301.9 1 4475 $9.00 piston bearing Ø12 Ø15 x 15

0M24-27 15.0000.0 1 0000  none  carb Dellorto UB20S with bell (cornetto)
0M31-26 15.0000.0 1 0000  none  intake pipe 20 id x 23 od
0M31-??  77.0161.0 1 0000  none  head (testa) 38.8 Sport RECORD

 



2. 1965-70 P4 Kits and Racers

Transformation Kits (Serie Transformazoni) with bore ∅41:

’65?-70? P4 Transformation Mini Monza 
1956#    Minarelli#   price
  55.4 cc (41.0 x 42)
A24-50 71.0475.7  none  piston 41.0 flat top L-ring

M24-27 15.0000.0  none  carb Dellorto UB20S with bell (cornetto)
M24-50 19.0000.0  none  cylinder iron ∅41.0 M32 thread
M24-51 77.0000.0  none  head (testa) 41.0
M31-26 15.0000.0  none  intake pipe 20 id x 23 od

’65?-70? P4 Transformation Monza
1956#    Minarelli#   price  
same as Mini Monza except:
M24-50 19.0000.0  none  cylinder ∅41.0 exhaust 35

’65?-70? P4 Transformation Super Monza
1956#    Minarelli#   price  
same as Monza except:
M24-55 77.0000.0  none  head (testa) 41.0 with bigger fins

 


’67 Minarelli Cadetti 60

This late 1960’s Minarelli P4  engine family was intended for racing or sport riding. 

P4 Racing changes: The crank changed from A24-32 (cone ∅13 pork chop flywheel) to A42-100 (cone ∅15 full circle flywheel). The width remained at 32mm. The piston changed from A24-31 (dome top 2.5 rings) to A42-102 (flat top L2.0 and 1.5 rings). The carburetor and exhaust got bigger.

’65-70? P4 50 RG Regolarita 49.6cc (38.8 x 42)
1956#    Minarelli#   price
  same as P4S except for:
A42-102 71.0413.0  none  piston 38.8 flat top L-ring
A42-102 71.0463.7  none  piston 39.0 oversize
A42-100 38.0063.7  none  crankshaft cone ∅15 full circle
A24-104 51.0301.9 $9.00 piston bearing Ø12 Ø15 x 15

M24-30   15.0000.0 none  carb Dellorto UB20S with filter
M31-26   15.0000.0 none  intake pipe 20 id x 23 od

M42-111 00.0000.0 none  exhaust (scarico) ∅35 x 320
M42-102 19.0000.0 none  cylinder iron ∅38.8 Special
M42-208 82.0000.0 none  magneto 6V 18w int. spark
M42-208 82.0000.0 none  Ducati 31.02.37

’65-71? P4 50 SP Special (Velocita) same as RG except:
1956#    Minarelli#   price
 
M42-107 00.0000.0  none  exhaust (scarico) ∅35 x 300

’65-71? P4 50 CR Cross same as SP except:
1956#    Minarelli#   price
 
M24-30   15.0000.0  none  carb Dellorto UB20S with filter
M42-208 82.0000.0  none  magneto 6V 18w int. spark,
M42-208 82.0000.0  none  Ducati 31.02.32 (no lights)

In 1965 a new 60 cc class was launched in Italy to replace the 50 class. In 1970 it returned to 50 cc.

’65-69 P4 60 CA Cadetti (Velocita)
59.2cc (41.4 x 44) piston port induction
1956#    Minarelli#   price

A42-203  68.0000.0  none  piston 41.4 with 6.5 skirt cut
M24-27   15.0000.0  none  carb Dellorto UB20S with bell (cornetto)
M42-211 00.0000.0  none  exhaust (scarico) ∅35 x 295
M42-202 19.0000.0  none  cylinder iron ∅41.0 Cadetti
M42-208 82.0000.0  none  magneto 6V 18w int. spark,
M42-208 82.0000.0  none  Ducati 31.02.37

’65-69 P4 60 CR Cross 
58.1cc (41.0 x 44) piston port induction
1956#    Minarelli#   price

A42-205  68.0000.0  none  piston 41.0 with 5.5 skirt cut
M24-30   15.0000.0  none  carb Dellorto UB20S with filter
M42-111 00.0000.0  none  exhaust (scarico) ∅35 x 320
M42-202 19.0000.0  none  cylinder iron ∅41.0 Cadetti
M42-208 82.0000.0  none  magneto 6V 18w int. spark,
M42-208 82.0000.0  none  Ducati 31.02.32 (no lights)

Top: 1965 Italjet Vampiro racer with P4 60 CA Cadetti (piston port induction) engine. The intake goes to the cylinder. The caption says “The Italjet Vampiro with Minarelli 60 engine presented in Monza shortly before the 1965 Milan Show. It will sell for 180 lire including the plastic fairing. Bore and stroke dimensions 41.4 x 44mm = 59.2cc. Note the built continuous double cradle frame and the four-shoe front brake.”

Bottom: 1967 Minarelli factory racer with P4 60 (rotary induction) engine. The intake goes to the crankcase. The caption says “The “lamellar” Minarelli prepared for the 1967 season has the same bore and stroke measurements as the conventionally fueled model, but delivers 9.5 HP at 10,800 rpm against the 9.0 at 10,800 rpm of the “first manner” Italjet which will also be referred to later. It comes from the “lamellar” propeller (rotary induction), with the 17 mm carburetor in direct communication with the crank arm. Always with 4% lubrication.”

In the 70’s and 80’s this engine was incorrectly referred to as a reed valve (lamellare) type, but it did not have a reed valve. Only 60 of these factory racers had this different intake system, according to moto gran premio e 50iniInstead of piston-controlled intake (induction), it had crankshaft-controlled (rotary valve) induction. That’s what Vespa Ciao had since 1968, and Yamaha had since 1961. The reed valve had not been invented yet. It was later invented by Yamaha and first produced in 1973. 

 

’66?-69? P4 60 QM (motor-car)
58.1cc (41.0 x 44) this also had that long stroke crank

 

 

Motori Minarelli is born: In 1967 the company name and logo changed, from F.B. Minarelli to Motori Minarelli. Above in the 1967 ad they showed off their new logo by making it as big as possible, filling an entire page width.

 

 



3. 1967-73 Minarelli P4S, P4S-70

’67-70? Minarelli P4S (ovalino) 49.6 cc (38.8 x 42)
1967# Minarelli# qty MMI# price  description
.
012050 71.0410.0 1 4540 none  piston kit 38.8 ball top
012050 71.0410.0 1 4540 none  piston kit 38.8 GOL 0034
012050 71.0460.7 1 4550 $73.0 piston kit Ø39.0 (1st oversize)
012050 71.0460.7 1 4560 none  piston kit Ø39.2 (2nd oversize)
012050 71.0460.7 1 4570 $73.0 piston kit Ø39.4 (3rd oversize)
012054 68.0115.0 2 0000 $10.0 piston ring Ø38.8 x 1.5 GN
012054 71.0805.0 1 4640  none  piston ring set
012067 51.0132.7 1 4470 $5.00 piston pin bushing ∅11.7 ∅15 x 13
 A24-10 51.0132.7 1 4470  none  (must be reamed after installation)
112000 38.0005.0 1 0000  none  crankshaft, pork chop, width 32
112000 38.0017.0 1 0000  none  (rod end Ø14.95 x 13 for bushing)
112002 77.0152.0 1 0000  none  head (testa) 38.8 Sport QUADRO
112004 70.0110.0 1 0000  none  right case P4 rounded
112005 70.0610.0 1 0000  none  left case P4 rounded

162003 19.0306.0 1 0000  none  cylinder iron 38.8 M32 ex thread
162010 49.0509.0 1 0000 $3.50 cylinder stud M6 x 109 (110)
162011 49.0304.9 4 0000 $0.60 head nut M6 x 6
162012 49.0603.9 4 0000 $0.20 head washer ∅6
162174 53.0302.0 1 0000 none  base gasket ∅44 40×40
811901 00.0000.0 1 0000  none  carb Dellorto UA18? side-float
912301 00.0000.0 1 0000  none  magneto 6V 18w internal spark
00000071.0611.7 1 0000  none  gasket set P4-SP iron

Late P4S changes: This late ’67-70 P4S is 95% the same as early ’65-67 P4S. Only some kick start and gearshift parts are different. This is evident from the illustrations and part numbers. 

Late P4S was on:
1967-72 Italjet X50, CX50, SX50
1969-72 Indian Papoose, JC54 and SE54 (made by Italjet)
early 70’s Fantic Diablo, Chopper, others

’72 Fantic Chopper

’73 Fantic Diablo

 

 

 

 

 

 

1971 Broncco


’69-73? Minarelli P4S-70 (ovalino) 66.8cc (45.0 x 42)
1967# Minarelli# qty MMI# price  description

811901 00.0000.0 1 0000  none  carburetor Dellorto SHB 19/19
000000 71.0485.7 1 0000  none  piston ∅45.0 dome top 1.5 rings

P4S-70 changes: Only the cylinder, piston and head changed for the bigger bore, from 38.8 to 45.0 mm. In 1971 the crankshaft changed from piston pin bushing type to a needle bearing type. 

 

 

 



4. 1969-73 Minarelli P6

’69-75? Minarelli P6 49.6 cc (38.8 x 42)
1967# Minarelli# qty MMI# price  description
.
012050 71.0410.0 1 4540 none  piston kit 38.8 ball top
012050 71.0410.0 1 4540 none  piston kit 38.8 GOL 0034
012050 71.0460.7 1 4550 $73.0 piston kit Ø39.0 (1st oversize)
012050 71.0460.7 1 4560 none  piston kit Ø39.2 (2nd oversize)
012050 71.0460.7 1 4570 $73.0 piston kit Ø39.4 (3rd oversize)
012054 68.0115.0 2 0000 $10.0 piston ring Ø38.8 x 1.5 GN
012054 71.0805.0 1 4640  none  piston ring set
162000 38.0021.0 1 0000  none  crankshaft, full circle, width 36
162000 38.0017.0 1 4465  none  rod Ø15.00 x 14 for needle bearing
162004 70.0130.0 1 0000  none  right case P6 angular for cyl. ∅44
162005 70.0630.0 1 0000  none  left case P6 angular for cyl. ∅44
112002 77.0152.0 1 0000  none  head (testa) 38.8 Sport QUADRO
162002 77.0161.0 1 0000  none  head (testa) 38.8 Sport RECORD

162003 19.0306.0 1 0000  none  cylinder ∅38.8 M32 ex thread
162010 49.0509.0 4 0000 $3.50 cylinder stud M6 x 109 (110)
162011 49.0304.9 4 0000 $0.60 head nut M6 x 6
162012 49.0603.9 4 0000 $0.20 head washer ∅6
162041 51.0301.9 1 4475 $9.00 piston bearing Ø12 Ø15 x 15
162174 53.0302.0 1 0000 none  base gasket ∅44 40×40
812205 15.0016.9 1 0000  none  carb SHA14/12 jet 52 cover F27
812205 15.0024.9 1 5650 $70.0 carb SHA14/12 jet 52, no cover
812205 15.0000.6 1 0000 $0.00 ∅18 sleeve, no cable pipe
000000 31.0010.6 1 0000 $12.0 air cover F27 large sloping
000000 49.0018.0 1 5880 $4.00 air cover clamp with screw
000000 15.0360.6 1 6360 $5.00 6109 fuel filter
000000 15.0410.6 1 6380 $5.00 1486/52 main jet #52
000000 15.0490.6 1 6430 $2.00 6123 float gasket
000000 15.0601.6 1 6530 $7.00 9249 inlet banjo black angled
000000 15.0701.6 1 6550 $10.0 2838 float needle
000000 15.0000.6 1 0000 $0.00 for full list see Carb/Dellorto/SHA14
912401 82.0014.9 1 0000  none  magneto Ducati 31.02.39
912401 82.0014.9 1 0000  none  6V 18w internal spark

P6 changes: The center width of the crankshaft, between the crank bearings, increased from 32mm on the P4, to 36mm on the P6. The cases changed from P4 rounded to P6 angular. Last but not least, the transmission gained two more speeds.

1975 Minarelli P6

1975 Minarelli P6

 

 

 



5. 1970-77 Minarelli P6-4

P6-4 has a 4-speed foot-shift transmission, manual clutch with pedals. It was basically a P6 with two of the gears missing.

’71-77 Minarelli P6-4 (4-speed, convertible to 6)
1967# Minarelli# qty MMI# price  description
.
012050 71.0410.0 1 4540 none  piston kit 38.8 ball top
012050 71.0410.0 1 4540 none  piston kit 38.8 GOL 0034
012050 71.0460.7 1 4550 $73.0 piston kit Ø39.0 (1st oversize)
012050 71.0460.7 1 4560 none  piston kit Ø39.2 (2nd oversize)
012050 71.0460.7 1 4570 $73.0 piston kit Ø39.4 (3rd oversize)
012054 68.0115.0 2 0000 $10.0 piston ring Ø38.8 x 1.5 GN
012054 71.0805.0 1 4640  none  piston ring set
162000 38.0017.0 1 0000  none  crankshaft, full circle, width 36
162000 38.0017.0 1 4465  none  rod Ø15.00 x 14 for needle bearing
162002 77.0161.0 1 0000  none  head (testa) Sport RECORD

162003 19.0306.0 1 0000  none  cylinder ∅38.8 M32 ex thread
162004 70.0130.0 1 0000  none  right case P6 angular for cyl. ∅44
162005 70.0630.0 1 0000  none  left case P6 angular for cyl. ∅44
162010 49.0509.0 4 0000 $3.50 cylinder stud M6 x 109 (110)
162011 49.0304.9 4 0000 $0.60 head nut M6 x 6
162012 49.0603.9 4 0000 $0.20 head washer ∅6
162041 51.0301.9 1 4475 $9.00 piston bearing Ø12 Ø15 x 15
810000 00.0000.0 1 0000  none  carb Dellorto SHB 19/19D
162174 53.0302.0 1 0000 none  base gasket ∅44 40×40

812205 15.0016.9 1 0000  none  carb SHA14/12 jet 52 cover F27
812205 15.0024.9 1 5650 $70.0 carb SHA14/12 jet 52, no cover
812205 15.0000.6 1 0000 $0.00 ∅18 sleeve, no cable pipe
000000 31.0010.6 1 0000 $12.0 air cover F27 large sloping
000000 49.0018.0 1 5880 $4.00 air cover clamp with screw
000000 15.0360.6 1 6360 $5.00 6109 fuel filter
000000 15.0410.6 1 6380 $5.00 1486/52 main jet #52
000000 15.0490.6 1 6430 $2.00 6123 float gasket
000000 15.0601.6 1 6530 $7.00 9249 inlet banjo black angled
000000 15.0701.6 1 6550 $10.0 2838 float needle
000000 15.0000.6 1 0000 $0.00 for full list see Carb/Dellorto/SHA14 

912401 82.0014.9 1 0000  none  magneto Ducati 31.02.39
912401 82.0014.9 1 0000  none  6V 18w internal spark

 


Left, 1981 Safari Commando, Minarelli P6-4
Right, 1975 Fantic Chopper (UK) with P6-4 Sport

 

 



6. 1971-73 Minarelli P4V

’71-73? Minarelli P4V 49.6 cc (38.8 x 42)
figure Minarelli# qty MMI# price  description

00  15 15.0016.9 1 0000  none  carb SHA14/12 jet 52 F27 use 15.0024.9
00  15 15.0024.9 1 5650 $70.0 SHA14/12 jet 52  US 2.0 hp
00  15 15.0000.6 1 0000 $0.00 ∅18 sleeve, no air cover, no cable pipe
15105 15.0360.6 1 6360 $5.00 6109 fuel filter
15130 15.0410.6 1 6380 $5.00 1486/52 main jet #52
15170 15.0490.6 1 6430 $2.00 6123 float gasket
15255 15.0601.6 1 6530 $7.00 9249 inlet banjo black plastic angled out
15300 15.0701.6 1 6550 $10.0 2838 float needle
15000 15.0000.6 1 0000 $0.00 for full list see Carb/Dellorto/SHA14 
00019 19.0306.0 1 0000  none  cylinder ∅38.8 M32  Sport Quadro
00031 31.0010.6 1 0000 $12.0 air cover F27 large sloping
00068 71.0410.0 1 4540 none  piston kit 38.8 ball top
00068 71.0410.0 1 4540 none  piston kit 38.8 GOL 0034
00068 71.0460.7 1 4550 $73.0 piston kit Ø39.0 (1st oversize)
00068 71.0460.7 1 4560 none  piston kit Ø39.2 (2nd oversize)
00068 71.0460.7 1 4570 $73.0 piston kit Ø39.4 (3rd oversize)
00077 77.0152.0 1 0000  none  head (testa) Sport QUADRO
00077 77.0161.0 1 0000  none  head (testa) Sport RECORD
00082 82.0012.9 1 0000  none  magneto Ducati 31.02.30 ∅94 
00082 82.0014.9 1 0000  none  magneto Ducati 31.02.39 ∅94   
00212 21.0212.0 1 0000  none  clutch cover
00214 21.0214.0 1 0000  none  magneto cover

00381 38.0017.0 1 0000  none  crankshaft (imbiellaggio) ’71-on
00000 00.0000.0 1 4465  none  rod Ø15.00 x 14 for needle bearing
00681 68.0115.0 2 0000 $10.0 piston ring Ø38.8 x 1.5 GN
00681 71.0805.0 1 4640  none  piston ring set
00701 70.0110.0 1 0000  none  right case half
00702 70.0610.0 1 0000  none  left case half
05113 51.0301.9 1 4475 $9.00 piston bearing Ø12 Ø15 x 15
05320 53.0302.0 1 0000 none  base gasket ∅44 40×40
05670 56.0601.0 1 4480 $9.50 piston pin Ø12.00 x 31.5
09323 03.0213.0 2 4490 $1.00 piston pin clip  Ø12
49005 49.0018.0 1 5880 $4.00 air cover clamp with screw
49036 49.0304.9 4 0000 $0.60 head nut M6 x 6
49039 49.0310.0 1 0000  none  pinion nut
49040 49.0312.0 1 4750 $7.00 flywheel nut M10-1.25 x 14 hex15
49041 49.0313.9 1 0000  none  sprocket nut
49042 49.0317.0 1 0000  none  clutch nut M14-1.0
49084 49.0509.0 4 0000 $3.50 cylinder stud M6 x 109 (110)
49226 49.0841.9 6 0000 $0.50 stator screw M4 x 10 phil-wide

 

Minarelli part numbers changed sometime around 1970.

P4V changes: The ’60’s rounded engine covers became angular, to fit the same rounded cases. The crankshaft changed from axe (mannaia) shaped, also called pork chop shaped, with piston bushing 38.0005.0, to full circle with piston bearing 38.0017.0. 

 

 



7. 1971-77 Minarelli SP6

SP6 changes: SP6 is the racing version of the P6. 

 

 

 



8. 1971-79 Minarelli P4E

 
’71-79? Minarelli P4E 49.6cc (38.8 x 42, all-iron cylinder)
figure Minarelli# qty MMI# price  description

00  15 15.0029.9 1 0000  none  carb SHA 14/12, F27 cover
00  15 15.0024.9 1 5650 $70.0 SHA14/12 jet 52, no cover
00  15 15.0000.6 1 0000 $0.00 ∅18 sleeve, no cable pipe
15105 15.0360.6 1 6360 $5.00 6109 fuel filter
15130 15.0410.6 1 6380 $5.00 1486/52 main jet #52
15170 15.0490.6 1 6430 $2.00 6123 float gasket
15255 15.0601.6 1 6530 $7.00 9249 inlet banjo black plastic angled out
15300 15.0701.6 1 6550 $10.0 2838 float needle
15000 15.0000.6 1 0000 $0.00 for full list see Carb/Dellorto/SHA14.
00019 19.0314.0 1 0000  none  cylinder ∅32 3-bolt
00031 31.0010.6 1 0000 $12.0 air cover F27 large sloping

00068 71.0410.0 1 4540 none  piston kit 38.8 ball top
00068 71.0410.0 1 4540 none  piston kit 38.8 GOL 0034
00068 71.0460.7 1 4550 $73.0 piston kit Ø39.0 (1st oversize)
00068 71.0460.7 1 4560 none  piston kit Ø39.2 (2nd oversize)
00068 71.0460.7 1 4570 $73.0 piston kit Ø39.4 (3rd oversize)
00077 77.0115.0 1 0000  none  head (testa) EXPORT GHISA
00  82 82.0014.9 1 0000  none  magneto Ducati 31.02.39 2-wire ⇐, ext. spark coil
00821 82.0006.6 1 M14  $16.0 points (ruttore) CEV 04229 = M14
00823 82.0132.6 1 M17T $13.0 condenser Ducati ∅17.9 = M17
00212 21.0232.0 1 0000  none  clutch cover grey
00212 21.0233.0 1 0000  none  clutch cover black
00214 21.0328.0 1 0000  none  magneto cover grey
00214 21.0335.0 1 0000  none  magneto cover black
00381 38.0037.0 1 0000  none  crankshaft cone ∅15 full circle
00681 68.0115.0 2 0000 $10.0 piston ring Ø38.8 x 1.5 GN
00681 71.0805.0 1 4640  none  piston ring set
00701 70.0116.0 1 0000  none  right case half for ∅47 cylinder
00702 70.0616.0 1 0000  none  left case half for ∅47 cylinder
05113 51.0301.9 1 4475 $9.00 piston bearing Ø12 Ø15 x 15
05320 53.0306.0 1 0000 none  base gasket ∅47 48×48
05670 56.0601.0 1 4480 $9.50 piston pin Ø12.00 x 31.5
09323 03.0213.0 2 4490 $1.00 piston pin clip  Ø12
49005 49.0018.0 1 5880 $4.00 air cover clamp with screw

49015 49.0124.8 1 4730 $2.00 woodruff key (chiavetta) #M85 3.0 x 3.6
49037 49.0306.9 4 0000 $1.20 head nut M7 x 7
49039 49.0310.0 1 0000  none  pinion nut
49040 49.0312.0 1 4750 $7.00 flywheel nut M10-1.25 x 14 hex15
49041 49.0313.9 1 0000  none  sprocket nut
49042 49.0317.0 1 0000  none  clutch nut M14-1.0
49084 49.0513.0 4 0000 $3.50 cylinder stud 7 x 118.5 (120)
49226 49.0841.9 6 0000 $0.50 stator screw M4 x 10 phil-wide

 


Left, 1978-79? Italjet SX50, Minarelli P4E all-iron cylinder (export ghisa)
Right, 1978-79? Italjet CX50, same engine

 



’75?-79? Minarelli P4E “unified” (iron sleeved alum. cylinder)
38.8 bore, 49.6cc flat top (testa piatta) piston, L-ring
figure Minarelli# qty MMI# price  description

00015 15.0029.9 1 0000  none  carb Dellorto SHB 19/19D
00068 71.0413.0 1 0000  none  piston kit flat top L-ring
00068 71.0463.7 1 0000  none  piston kit oversize
00019 19.0002.0 1 0000  none  cylinder alum. SP ∅32 3-bolt
00077 77.0110.0 1 0000  none  head (testa) NORMALE
00077 77.0111.0 1 0000  none  head (testa) SP bigger fins
05320 53.0306.0 1 0000 none  base gasket ∅47 48×48
49084 49.0513.0 4 0000 $3.50 cylinder stud 7 x 118.5 (120)
49037 49.0306.9 4 0000 $1.20 head nut M7 x 7

 


1978-79? Italjet CX50R, P4E iron-sleeved alum. cylinder

 

 


1973 P4E-70

 

’72?-74? Minarelli P4E-70 iron sleeved alum. cylinder
66.8cc (45.0 x 42)
magneto Ducati 31.02.38 3-wire internal ign. ground
for 1974 Indian ME76 (US model with brake light)


1972 Indian SE74 had a P4S-70 engine. 1973 had a P4E-70 engine.

 

P4E changes:  The pork-chop all-needle-bearing P4V crankshaft became a full circle type. The exhaust bolts to the cylinder with a 3-bolt flange, instead of screwing on with a special inverted nut.

 

 



9. 1973-77 Minarelli P4CS, P6CS

1971-73 P4CS

’71-82? Minarelli P4CS Compact System (iron/alum.)
38.8 bore, 49.6cc flat top piston, L-ring
figure Minarelli# qty MMI# price  description
.
00  15 15.0029.9 1 0000  none  carb SHA 14/12, F27 cover
00  15 15.0024.9 1 5650 $70.0 SHA14/12 jet 52, no cover
00  15 15.0000.6 1 0000 $0.00 ∅18 sleeve, no cable pipe
15105 15.0360.6 1 6360 $5.00 6109 fuel filter
15130 15.0410.6 1 6380 $5.00 1486/52 main jet #52
15170 15.0490.6 1 6430 $2.00 6123 float gasket
15255 15.0601.6 1 6530 $7.00 9249 inlet banjo black plastic angled out
15300 15.0701.6 1 6550 $10.0 2838 float needle
15000 15.0000.6 1 0000 $0.00 for full list see Carb/Dellorto/SHA14.
00015 00.0000.0 1 0000  none  carburetor Dellorto 12 to 19 mm
00019 19.0039.0 1 0000  none  cylinder alum. for 3-bolt
00015 15.0029.9 1 0000  none  carb Dellorto SHB 19/19D
00068 71.0413.0 1 0000  none  piston kit flat top L-ring
00068 71.0463.7 1 0000  none  piston kit oversize
05320 53.0306.0 1 0000 none  base gasket ∅47 48×48
05670 56.0601.0 1 4480 $9.50 piston pin Ø12.00 x 31.5
09323 03.0213.0 2 4490 $1.00 piston pin clip  Ø12
49037 49.0306.9 4 0000 $1.20 head nut M7 x 7
49084 49.0513.0 4 0000 $3.50 cylinder stud 7 x 118.5 (120)
49226 49.0841.9 6 0000 $0.50 stator screw M4 x 10 phil-wide

 

 1981 Testi Cricket 4M Minarelli P4 engine
Left, 1979? P4CS Compact System
Right, 1981 Testi Cricket 4M with P4CS

 

 

 



10. 1973-82 Minarelli P4R, P6R

 

 

’74-82? Minarelli P4R, P6R iron sleeved alum. cylinder
38.8 bore, 49.6cc flat top piston, L-ring
figure Minarelli# qty MMI# price  description
.
00  15 15.0029.9 1 0000  none  carb SHA 14/12, F27 cover
00  15 15.0024.9 1 5650 $70.0 SHA14/12 jet 52, no cover
00  15 15.0000.6 1 0000 $0.00 ∅18 sleeve, no cable pipe
15105 15.0360.6 1 6360 $5.00 6109 fuel filter
15130 15.0410.6 1 6380 $5.00 1486/52 main jet #52
15170 15.0490.6 1 6430 $2.00 6123 float gasket
15255 15.0601.6 1 6530 $7.00 9249 inlet banjo black plastic angled out
15300 15.0701.6 1 6550 $10.0 2838 float needle
15000 15.0000.6 1 0000 $0.00 for full list see Carb/Dellorto/SHA14.
00015 15.0029.9 1 0000  none  carb Dellorto SHB 19/19D
00019 19.0038.0 1 0000  none  cylinder 38.8
00068 71.0413.0 1 0000  none  piston kit flat top L-ring
00068 71.0463.7 1 0000  none  piston kit oversize

00212 21.0220.0 1 0000  none  clutch cover grey
00212 21.0226.0 1 0000  none  clutch cover black
00214 21.0328.0 1 0000  none  magneto cover grey
00214 21.0335.0 1 0000  none  magneto cover black
00214 21.0347.0 1 0000  none  magneto cover black Dansi

00701 70.0131.0 1 0000  none  right case half P6R for ∅47 cyl.
00702 70.0631.0 1 0000  none  left case half P6R for ∅47 cyl.
00702 70.0650.0 1 0000  none  left case half P6R for ∅47 Dansi
05320 53.0306.0 1 0000 none  base gasket ∅47 48×48
05670 56.0601.0 1 4480 $9.50 piston pin Ø12.00 x 31.5
09323 03.0213.0 2 4490 $1.00 piston pin clip  Ø12
49037 49.0306.9 4 0000 $1.20 head nut M7 x 7
49084 49.0513.0 4 0000 $3.50 cylinder stud 7 x 118.5 (120)
49226 49.0841.9 6 0000 $0.50 stator screw M4 x 10 phil-wide

 

1976 Moto Meteora Minarelli M4 4-speed tubone type frame
Left, 1976 Moto Meteora with Minarelli P6R
Right, 1981 Safari Commando, Minarelli P6-4

 

 

’74?-80? Minarelli P6R Radiale (all-aluminum cylinder)
49.6 cc (38.8 x 42)
figure Minarelli# qty MMI# price  description.
05320 53.0306.0 1 0000 none  base gasket ∅47 48×48
49084 49.0513.0 4 0000 $3.50 cylinder stud 7 x 118.5 (120)
49037 49.0306.9 4 0000 $1.20 head nut M7 x 7

 

 
1976 Fantic RC Casa, P6R all-aluminum cylinder

 

 

 

page 66, 68 Minarelli P4 P6 magneto, carburetor parts (026 missing)

 

page 70: Minarelli P4 P6 transmission parts, covers, levers, tools

 


Crankshaft parts for all motors 1960’s – 70’s