Reverse direction engine re-build.

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12-12-2008, 04:30 PM

samson88

Junior Member

Thread Starter

Join Date: Dec 2008

Posts: 1

Hi

My idea for a jet boat is to mount a rotary engine on top of the jet unit and drive through a Gates Belts and Pully system. I will need a counter rotating engine.

Can the end plates be swapped when rebuilding the engine?

Thank you for your knowledge.

12-12-2008, 05:07 PM

ColinRX7

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Join Date: Oct 2003

Location: Canada

Posts: 3,502

No they can't be swapped - it's not that simple.

You're best bet is an opposing gear to reverse the powerflow direction from the flywheel and drive your boat with the opposing gear.

12-13-2008, 04:26 PM

j9fd3s

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Join Date: May 2002

Location: California

Posts: 22,465

how about just running the engine backwards? peripheral intake side exhaust? youd need to find a way to spin the oil and water pumps the correct way....

01-29-2009, 02:29 PM

Jeff20B

Senior Member

Join Date: Nov 2001

Posts: 2,284

FD waterpump but belted like an FC.

The oil pump would need to be an extrnal racing type.

01-29-2009, 08:42 PM

Lynn E. Hanover

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Join Date: Jan 2004

Location: Central Ohio (Hebron) Zephyrhills Fla.

Posts: 1,322

Quote:

Originally Posted by samson88' post='913228' date='Dec 12 2008, 02:30 PM

Turn the engine around and drive from the other end. Sandwich a plate between the engine and pan to support a bearing ahead of the front pulley. So the crank nose is not placed in bending.

Piece of cake.

Lynn E. Hanover

01-30-2009, 08:10 AM

Baldy

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Join Date: Sep 2002

Location: Tallahassee, FL

Posts: 5,425

Haven't the airplane people done this sort of thing? I thought you could just turn the engine around like Lynn mentioned. I'm no expert and have no experience with this, I just remember reading about it.