Couple of guys from US started building their own version of American Sport tourer. And coming to the most important part of the machine – engine – they chose the hard path. To build their own! We present you the Motus MST-01 KMV4. You would probably say – what is so interesting about “some motorcycles engine”. Well, that’s where you have to watch the video in order to fully understand the idea behind it. In principle, it’s an Hot Rod engine for bikes!
And from my “not so technical” background I would say that this engine is 1/2 of Corvette’s V8 pushrod. So V4, but mounted in similar style to Moto Guzzi. Engine will be simple, with very usable powerband, and quite torquey. And yes, it’s the first Direct Injected motorcycle engine (that’s what GDI stands for).
Now, we must mention the “not so interesting part”. The motorcycle itself. An American Sport Tourer as they would call it. From the first sketches, and a clay model you can see in the background (see video), it’s nothing revolutionary. So we concentrate on the engine for now….
For the rest, visit Motus Motorcycles
Engine type
1645cc (100ci) liquid-cooled 90º V4; dual OHV; pushrod; chain-driven single cam; hydraulic lifters
Transmission
Motus 6-speed sequential gearbox; unit construction; wet multiplate clutch
Bore x Stroke
86.5mm (3.41in) x 70.0mm (2.75in)
Compression
11.5:1
Valves
Intake Ø44.5mm (1.75in); Exhaust Ø36.8mm (1.45in); stainless steel
Dimensions
610mm (24in) L x 492mm (19in) W x 508mm (20in) H
Performance
Minumum 140bhp @ 7800rpm; 162Nm (120lb-ft) @ 4500rpm; 8000rpm redline
Materials
356-T6 cast aluminum block and heads; forged steel crank, cam, rods; forged aluminum pistons; linerless Nikasil bore
Firing order
1 – 4 – 3 – 2
Ignition Sequence
TDC – 345º – 435º – 630º
Crankpin Offset
75º
Minimum Octane
87
Tags: engine, hot rod motorcycle, KMV4, motorcycles, Motus, pushrod, v4
