Attention, high engine exceeding the statutory displacement of 50cc, reserved for the competition on circuit, run ...
Here is the high engine in minacrom cast iron (high-end materials) with high compression cylinder head from DR Racing. A complete kit for guaranteed engine performance and reliability. Its displacement reaches 84.00cc precisely for a 50mm diameter bore with a cylinder with 3 large intake transfers and an ovalized and well-enlarged exhaust outlet, an engine efficiency which will be greatly improved.
Its stroke is 43mm with a compression ratio of 1: 10.7. Clearly, a high engine ideal for quality refurbishment and additional performance. The cylinder head is a model entirely in aluminum, light and designed in materials such that the cooling will be improved. Chamber of hemispherical shape with a smooth and rough finish (see photo of the room).
The piston chosen to accompany this high engine is a bi-segment with specific treatment with high silicon content guaranteeing better heat exchange and performance at the end. The latter has a flat cap significantly increasing the compression ratio, a preparation on the rear skirt via an opening to improve the filling of the intake and the sweep.
Two treated steel segments, chrome-plated with specific shape at the level of the piston pins. Thanks to the 1.5 mm thickness of these, the torque will be greatly improved with increased friction at the expense of high revs. Of course, supplied with its Ø12 X 42 mm long axis and its 2 clips in G.
Delivered complete as presented, you will understand, this little performance monster will be a real asset combining solidity, price, reliability, longevity ....
We recommend to accompany this high engine with at least : a carburetion of 21 or 24 mm for the best, of an adjustment of your variation with increase or reduction of the weights of your rollers, an unbridled racing ignition, cold racing candle, oil 100% synthetic engine, relaxing racing exhaust ...
Contains :
-Cylinder in minacrom cast iron 3 transfers and oval exhaust
-High compression aluminum cylinder head
- Bi segment piston
-Chromed steel segments
- Piston pin Ø12 X 42 mm
-G-clips
-Joint base
-Exhaust gasket
-Exhaust studs with screws
Installs on :
- PIAGGIO Ape 50 P 50 2T 80-85, Ape 50 TM P 50 2T 85-89, Ape EU2 50 2T 03-10, Ape FL - FL2 50 2T 89-95, Ape FL3 50 2T 96-99, Ape RST MIX 50 2T 99-03, Vespa 50 2T 67-82, Vespa FL 50 2T 90-90, Vespa FL2 AUTOMATICA 50 2T 90-91, Vespa FL2 HP 50 2T 91-97, Vespa N 50 2T 89-90, Vespa PK 50 2T 82-84, Vespa PK AUTOMATICA 50 2T 84-89, Vespa PK XL 50 2T 85-88, Vespa PK XL PLURIMATIC 50 2T 85-90, Vespa PK XL RUSH 50 2T 88-89
Optionally we offer a stage 1 preparation, this preparation is a modification of the channels and the exhaust light by increasing the diagrams and improving the duct, it increases the performance of the cylinder. An improvement in the piston and bottom of the skirt is also included in this modification. Allow a little extra time for this preparation!
