Cylinder -DR177 HP Aluminium- Vespa P125-150, GTR125 (VNL2T), TS125 (VNL3T), Sprint150 Veloce (VLB1T 0150001-)

Preview: Cylinder -DR177 HP Aluminium- Vespa P125-150, GTR125 (VNL2T), TS125 (VNL3T), Sprint150 Veloce (VLB1T 0150001-)

Description

CYLINDER DR177 HP ALUMINIUM FOR VESPA PX125/150, Sprint150 Veloce, GTR125, Cosa125/150

The DR177 HP aluminum is a completely new design and has nothing to do with the old well-known DR177 made of cast iron. It has a modern cylinder layout with four main scavenging ports and two support ports. The exhaust is one-piece (DR177 cast iron = three-piece).
The exhaust flange is made of steel and is bolted on with four screws, so it is replaceable.

The cylinder head has cooling fins on the underside, but still features an off-center combustion chamber.
The piston has two 1.0mm thick steel piston rings.

Displacement: 177ccm
Stroke: 57mm (standard)
Bore: Ø63mm
Control angle overflow/exhaust: 124°/177°
Compression ratio: 10,5:1 (eff.6,7:1)
Ignition timing: 18° v.oT.
squish edge: 1,2-1,4mm
Spark plug: B9HS/W2AC

The timing angles stand out clearly from its predecessor and at 124°/177° are already sporty for a touring cylinder. If you want to use the cylinder with a long stroke shaft (60mm stroke), the timing angles are already very high (129°/179°). For a touring engine on rotary vane basis, the overcurrent angle is thus clearly too high. We therefore recommend using a 57mm stroke (as stock) crankshaft.

The compression ratio of 10.5:1 (effective 6.7:1) is moderate and offers in combination with the aluminum cylinder base a healthy basis for a touring engine.

CONCLUSION: With the new DR177 HP Aluminum, DR offers a modern successor to its popular classic. The DR177 HP Aluminum is thermally more stable, more wear-resistant, more powerful and requires less maintenance (no coked side exhausts that need to be cleaned).

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€398.95 *

incl. VAT plus shipping costs

Available immediately (delivery time 1-3 working days*)

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