Kit 70cc Ø47mm (10mm axis) cast iron POLINI CORSA Racing minarelli vertical (booster rocket, bws, ...)

A very large kit very famous for having a very strong power while being extremely resistant. The CORSA polini or course in French is a d.47mm cast iron kit (PATA NEGRA) hand retouched with very detailed diagrams. It retains a normal exhaust as well as a dual segment piston which allows it a lot of torque and robustness. It will reach powers of a majority of stock aluminum kit (not retouched).

It comes with a carburation adjustment jet, a cold racing spark plug, carbon racing valves studied in the kit. Its piston is reinforced and worked in the kit, its cylinder head is polished truncated really well calculated which allows it a very good power by adding a good squish to it. The cylinder which remains in 5 transfers but has a revised and corrected admission and everything is in the diagrams retouched by hand!

 

You will also appreciate the reinforced O-ring cylinder head gasket which avoids many well-known concerns on this type of engine: the flat aluminum gaskets which break. This kit is also delivered with a reinforced needle cage and on greased. Note the finish of the side transfers which leaves a lot to be desired.

 

We recommend it with at least: reinforced crankshaft, 21mm carburation and settings, reinforced bearings, racing exhaust.

 

CORSA POLINI 70 pack containing:

piston bi segment d.47mm POLINI

2 reinforced segments d.47mm X1

10mm piston pin

needle cage reinforced d.10mm inside POLINI

POLINI stickers

very complete POLINI instructions

POLINI guaranteed

cylinder studs for exhaust mounting

CHAMPION cold racing spark plug

1 nozzle

X2 piston clips (pin rings) crab type

parck reinforced complete seal POLINI

POLINI polished tapered racing cylinder head d.47mm

POLINI racing carbon 0.35mm valves

hand retouched cast iron cylinder 5 transfers POLINI CORSA

 

As an option we offer you a stage 1 preparation, this preparation is a modification of the channels and the exhaust port by increasing the diagrams and improving the duct, it increases the performance of the cylinder. An improvement to the piston and the bottom of the skirt is also included in this modification. Allow a little extra time for this preparation!

Mounts on :

APRILIA AMICO
APRILIA SR (before 1993 only)

FANTIC BIG WHEEL

CARELLI PONY
GARELLI SR

ITALJET BAZOOKA
ITALJET PISTA
ITALJET REPORTER
ITALJET SCOOP
ITALJET YANKEE
ITALJET ASCOT
ITALJET ASTRA

LEM FLASH
LEM GHIBLI
LEM TORNADO
LEM TORNADO SS1

KOTIR SR

KTM CHRONO

MBK BOOSTER
MBK BOOSTER NAKED
MBK BOOSTER ROCKET
MBK BOOSTER NEXT GENERATION (NG)
MBK BOOSTER CW
MBK BOOSTER SPIRIT
MBK STUNT
MBK TARGET
MBK BOOSTER TRACK

YAMAHA BW'S
YAMAHA BW'S NG
YAMAHA BW'S ORIGINAL
YAMAHA BW'S NAKED
YAMAHA CRZ
YAMAHA CT
YAMAHA SLIDER
YAMAHA SPY
YAMAHA ZUMA

And many other models ...