Gregory Bender
 

Cylinder head comparison

Moto Guzzi V700, V7 Special, Ambassador, 850 GT, 850 GT California, Eldorado, and 850 California Police models

Author: Rolf Halvorsen

Created:

Updated:

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Thanks to Rolf Halvorsen for this very detailed comparison of the early cylinder heads. I've added the 0.1a column to reflect the A-series Ambassador cylinder head. Thanks also to Edwin Brouwer for sending additional information about a very rare cylinder head. I've added the Odd column based on the information sent by Edwin.

Series 0.1 0.1a 1.1 1.2 1.3 1.4 1.5 2.1 2.2 2.3 3.1 4.1 Odd
Cooling fin shape All cooling ribs with V shaped form in spark plug area. All cooling ribs with V shaped form in spark plug area. All cooling ribs with V shaped form in spark plug area. All cooling ribs with V shaped form in spark plug area. All cooling ribs with V shaped form in spark plug area. All cooling ribs with V shaped form in spark plug area. The top two cooling ribs have a flat shape in spark plug area. The top two upper cooling ribs have a U shaped form in the spark plug area. The top two upper cooling ribs have a U shaped form in the spark plug area. The top two upper cooling ribs have a U shaped form in the spark plug area. The top two cooling ribs have a flat shape in spark plug area. The top two cooling ribs have a flat shape in spark plug area. The top two cooling ribs have a V shape combined with flat shape in spark plug area, to allow area for spark plug cable.
Area for the push rods Shallow Shallow Shallow Shallow Shallow Shallow Shallow Deep Deep Deep Deep Deep Deep
Is the Moto Guzzi part number stamped on the cylinder head? No No No No No No No Yes Yes Yes Yes Yes Yes
Notes regarding the center position screw No threads for center position screw. No threads for center position screw. Threads for center position screw. Threads for center position screw. Threads for center position screw. Threads for center position screw. Threads for center position screw. Threads for center position screw. Threads for center position screw. Threads for center position screw. Threads for center position screw. 2 flanges for mounting bolts instead of threads for the exhaust pipe. 2 flanges for mounting bolts instead of threads for the exhaust pipe.
Is there a GUZZI stamping on the cylinder head? No No No Yes Yes Yes Yes Yes No No No No Yes
Moto Guzzi part number for the right cylinder head MG# 12022100   MG# 13022100 MG# 13022100 MG# 13022100 MG# 14023500 MG# 14023500   MG# 14023502 MG# 13022160 MG# 13022160 MG# 11021163 MG# 12022101
Moto Guzzi part number for the left cylinder head MG# 12022200   MG# 13022200 MG# 13022200 MG# 13022200 MG# 14023600 MG# 14023600   MG# 14023602 MG# 13022260 MG# 13022260 MG# 11021263 MG# 12022201
Alternative Moto Guzzi part number for the right cylinder           MG# 14022100     MG# 13022100     MG# 14022101  
Alternative Moto Guzzi part number for the left cylinder           MG# 14022200     MG# 13022200     MG# 14022201  
Rolf part number notes           MG# 13022260 (left)   MG# 12022201 (left)          
Edwin part number notes                         MG# 12022101 (left)
Edwin part number notes                         MG# 12022201 (right)
Number of valve springs 1 1 2 2 2 2 2 1 2 2 2 2 1
Intake valve size Ø 38.5 mm Ø 41 mm Ø 41 mm Ø 41 mm Ø 41 mm Ø 41 mm Ø 41 mm Ø 41 mm Ø 41 mm Ø 41 mm Ø 41 mm Ø 41 mm Ø 38.5 mm
Exhaust valve size Ø 34.5 mm Ø 36 mm Ø 36 mm Ø 36 mm Ø 36 mm Ø 36 mm Ø 36 mm Ø 36 mm Ø 36 mm Ø 36 mm Ø 36 mm Ø 36 mm Ø 34.5 mm
Inlet port size Ø 37 mm Ø 37 mm Ø 30 mm Ø 30 mm Ø 30 mm Ø 35 mm Ø 30 mm Ø 34 mm Ø 34 mm Ø 34 mm Ø 34 mm Ø 34 mm Ø 30 mm
Exhaust port size Ø 37 mm Ø 37 mm Ø 37 mm Ø 37 mm Ø 37 mm Ø 37 mm Ø 37 mm Ø 37 mm Ø 37 mm Ø 37 mm Ø 37 mm Ø 37 mm Ø 32 mm
Model year 1968 1969 1969 1970 1971 1971 1971, 1972 1971, 1972 1972 1972 1973, 1974 1974, 1975 1968??
Model usage V7 700 A-series Ambassador V7 Special V7 Special V7 Special, V7 LAPD V7 Sport Telaio Rosso (Red Frame) V7 Sport Telaio Nero (Black Frame) V7 700 V7 Sport Telaio Nero (Black Frame) V7 Special, V7 850GT V7 Sport Telaio Nero (Black Frame), 750 S, V7 Special, V7 850 GT 750 S3, V7 850 GT, V7 850 California V7 700 Polizia, Stradale?? or prototype??

VERY RARE