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Slot Packing System; 125cc Version With Fibre Head Gasket - Derbi GP1 125-250 c.c. Workshop Manual

Gp1 125-250 c.c..
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S
LOT PACKING SYSTEM
Characteristics
Compresion ratio - 125cc verion
Rc: 11,50÷13:1
The length «A" to be measured refers to the pistón protrusion. It indicates the amount by which the surface formed
by the pistón crown tops the surface formed by the upper parí of the cylinder. The more the pistón descends into the
cylinder, the less the base gasket to be applied (to recover the compression ratio) will be and vice versa.
N.B.
THE MEASUREMENT OF «A" MUST BE CARRIED WITH THE PISTÓN AT THE TDC, WITHOUT ANY GASKET
INSTALLED BETWEEN THE CRANKCASE AND THE CYLINDER, AND AFTER RESETTING THE COMPARATOR,
COMPLETE WITH SUPPORT, ON A RECTIFIED SURFACE.
125CC VERSIÓN WITH FIBRE HEAD GASKET (1.1)
NAME
Thicknesses 125
Thicknesses 125
26
MEASURE A
2,20÷2,45
2,45÷2,70
THICKNESS
0,4 ± 0,05
0,6 ± 0,05

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Gp1 125 c.c.Gp1 250 c.c.

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  • LIAM May 27, 2017 06:12:
    HI HAVE JUST BOUGHT A DERBI 125 CC CROSS CITY, REALLY WOULD LIKE TO BUY A WORKSHOP MANUAL PLEASE CAN YOU HELP