High engine not meeting regulatory 50cc engine, only for competition on the track, run ....
For advanced riders, this small high engine hides his game. This cylinder kit / piston and cylinder head will be a real asset performance and durability for your motor scooter Minarelli / Yamaha horizontal liquid. Requires no machining of low engine, it has a normal race / origin 39,30mm.
Nykasil quality aluminum cylinder thus has a 47,6mm diameter bore, with 6 intake transfers very well designed with a very specific architecture and exhaust revised upwards and provided with booster. Like its big brother in special 80cc 44mm long run, the diagrams are to be revised upwards if you want more high rpm. This one is based mainly for the couple to maintain increased strength as it is.
A single segment in VERTEX piston comes accompany this kit, obviously high-end, quality is no longer in doubt. Provides with its axis of piston reinforced Ø10 X 38mm, its 2 clips type G and its end segment chrome domed hard Ø47,6 X 1mm.
In addition, a cylinder head high compression model specially designed to equip this engine comes up with, as shown in the pictures. This cylinder head is improved by the use of high quality aluminum alloy materials offering a better cooling. Mounted O-ring more more pre compression and security, polished with conical shaped chamber, provide a short base candle otherwise use a candle with a long wedge base if desired.
In summary, we thoroughly enjoyed this high complete engine for a very correct price in comparison to the Polini, MHR and other brands, provides benefits than up and that may even surprise many with its strength ( respecting a worthy mounting of the name and the perfect settings), performance to date with frank times, extensive acceleration and impressive torque.
We recommend at least: cold candle racing short or long base + dock, several joints of base plate to make the squish, exhaust racing for diagrams to define as your preparation, racing carburetor (21mm minimum to guarantee good food) , reinforced bearings C4 type Celeron or better, setting a mandatory variation, quality motor oil, ....
contains:
- Aluminum cylinder bore 47,6mm, 6 transfers and exhaust to boost
- Cylinder head high compression chamber in aluminum with polished finish, tapered shape
- Piston mono segment VERTEX preparation with the rear skirt
- X1 end segment chrome domed hard Ø47,6 X 1mm
- X2 piston Clips Type G
- Piston pin reinforced Ø10 X 38mm length
- Pack joined high engine
- Notice Simonini
- Stickers
Optional we offer a preparation course 1, this preparation is a modification of the exhaust port by increasing the charts and improvement of the duct, it increases the cylinder performance. Improved bottom skirt is also included in the amendment. Allow a little extra time for this preparation!
