Gallery: Sea-Doo LRV Supercharged 4-Stroke Conversion

The early to mid-2000’s had a craze for 4-seater personal watercraft and the Sea-Doo LRV was one of them. They were big, heavy, and had a relatively huge payload capacity. Weighing in dry at 952 pounds, you could pile on an additional 745 pounds worth of passengers and luggage. It was not light by any means.

Additionally, it was powered by a Rotax 947, 2-stroke engine. By today’s standards of larger displacements and forced induction, the original engine was lacking in the power to weight ratio department.

It’s not hard to see why these 4-seater watercraft eventually went extinct. They took away from the light, powerful, and downright playful nature that are expected from personal watercraft.

This does not stop some owners who evidently still have a love for their old LRV’s. Take for example this LRV converted over to more modern 4-stroke technology with a Rotax supercharged engine swap.

The build was completed by Lacey Power Sports (LPS) for one of their customers. The customer requested a top speed of at least 70 MPH so LPS decided to modify the 2006 RXP donor engine and transform it into a Rotax ACE 300.

The supercharger was modified, the engine received new fuel injectors, titanium valve retainers, and an ECU reflash as well as a modified intake manifold.

All of this provided the much needed top speed guarantee for this heavy ski. We are told the customer has been riding it for quite some time now and that they are happy with the build.