Jet Boat Engine Mounts and Couplers

Jetboat Drive Line Education

This was an H-bar driveline produced for a specific engine in mind and bolts directly over the flywheel/flexplate to the crankshaft (mounting flange pattern will vary depending on specific application. Most commonly produced in Oldsmobile (flywheel), Chevrolet (flexplate) and Ford (385 series 429-460 Flexplate). These drive lines were used most commonly in Berkeley Pack-a-Jet combinations (3 point engine mounts with short bellhousing) and in Jacuzzi jet set-ups utilizing a mid point saddle mount and a pump mounted rear engine bracket.
This style drive line incorperates a very compact design measuring only 6 3/4". It also uses larger industrial sized U-joints similar to 1350. However this particular drive line has not been produced as a new replacement driveline in many years.

Unfortunately in cases where this drive line is either missing or beyond repair, in the absence of an equivolent replacement, it is routine to repace with the 1310 Spice driveline and a PTO. This however requires the engine to be relocated forward approximately 2" and generally reqiures modification to existing engine mounting hardware or replacement.

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Rockwell H-Bar Drive Line