Reverse direction engine re-build.

Reply Subscribe

Thread Tools

Search this Thread

Dec 12, 2008 | 04:30 PM

samson88

Thread Starter

Junior Member

Joined: 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.

Dec 12, 2008 | 05:07 PM

ColinRX7

Senior Member

Joined: Oct 2003

Posts: 3,502

From: Canada

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.

Dec 13, 2008 | 04:26 PM

j9fd3s

Senior Member

Joined: May 2002

Posts: 22,465

From: California

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....

Jan 29, 2009 | 02:29 PM

Jeff20B

Senior Member

Joined: Nov 2001

Posts: 2,284

FD waterpump but belted like an FC.

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

Jan 29, 2009 | 08:42 PM

Lynn E. Hanover

Fabricator

Joined: Jan 2004

Posts: 1,322

From: Central Ohio (Hebron) Zephyrhills Fla.

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

Jan 30, 2009 | 08:10 AM

Baldy

Super Moderator

Joined: Sep 2002

Posts: 5,425

From: Tallahassee, FL

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.