SkyHawk 70cc Minarelli

Here's the latest High Reving Engine RAGE.   

It's a SkyHawk YuanDong OCDT Bottom half and a Minarelli 70cc vertical top end assembled by the Pro. Mr. DB   

NOTE:  This bottom half engine was made in 2016 before the Pandemic quality crash and has been over to Don's Butlers Custom Speed Shop in Chickasha for his complete teardown and rebuild Midas touch.   

Heads bolts are M8, not M6.  All the fasteners are 8.8 hardness.   

He did a custom 10-hole crank balance, ported the cylinder, torqued all fasteners and installed a Woodpecker HP chrome head.   

The squish band solder squeeze measured 1.1mm.  Perfect for a Minarelli high rev engine when experiencing the coefficient of lineal expansion.   

The CNC manifold bracket accepts a flange mount VM20 Mikuni or the PZ20 Carb.

FYI:  Our new shipment of OCDT's for handheld drill start will arrive shortly after China's New Year holidays.  However, our SkyHawks can be both Pedal started and electric drill started. 

FYI:  The China cylinder factory marks both their 49cc and 70cc Minarelli cylinders as 49cc, I'm guessing for the benefit of those living in states where only 48cc/50cc is legal or most likely it's just a genuine old XXXX up.    The cylinders we use are definitely 70cc 47x40 bore and stroke, guaranteed.     

FYI:  We will be offing the 70cc Minarelli vertical cylinder kits later on when our new shipment arrives and yes, they will have 8M head bolts, not 6mm like what is on the market now and have a CNC 10mm spacer and a CNC manifold. 

NOTE:  This engine is for the experience small engine customer that knows not to attempt a 25-mile ride at full throttle from the get-go.  Slow break-in required.