New Cummins/Mercruiser Project

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10-13-2008 | 03:03 AM

#111

29Firefox

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Joined: Feb 2008

Posts: 610

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From: West edge of the Pacific

Quote:

Originally Posted by shueman

Drivetrain will start with 1.35 gears and labbed 38p 5-blades, targeting 75-80mph running speed...

How ya gonna get her out of the hole?

Last edited by 29Firefox; 10-13-2008 at 03:16 AM.

10-13-2008 | 06:34 AM

#112

HabanaJoe

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Joined: Jun 2004

Posts: 1,395

Likes: 16

From: Freehold, NJ

The drives are 1.35 but what are those boxes on the back of the engines are they a tranny or crash box? If so is there a ratio in there?

10-13-2008 | 10:30 AM

#113

steelhorse

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serous engine.. lots of torque

10-13-2008 | 07:10 PM

#114

Jassman

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Joined: Oct 2000

Posts: 9,398

Likes: 33

Quote:

Originally Posted by obrien

The boat is looking good. I am curious to see how this combo works out.

We should take bets...My guess will be 78.6 mph

10-13-2008 | 09:59 PM

#115

Comanche3Six

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84mph

10-13-2008 | 10:29 PM

#116

Hot Knots

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Joined: Jul 2008

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Quote:

Originally Posted by steelhorse

serous engine.. lots of torque

...which is why I wonder about the drive choice. Is the NXT strong enough to handle 1200-1400ft lbs torque?

10-13-2008 | 10:39 PM

#117

stainless

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75mph

10-14-2008 | 09:21 AM

#118

obrien

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Joined: Mar 2008

Posts: 529

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what diameter props are you going to start with?

10-14-2008 | 03:22 PM

#119

29Firefox

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Joined: Feb 2008

Posts: 610

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From: West edge of the Pacific

Which ICAL template did they set up the ECM with?

10-14-2008 | 03:30 PM

#120

29Firefox

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Joined: Feb 2008

Posts: 610

Likes: 1

From: West edge of the Pacific

Quote:

Originally Posted by stirling

On my other diesel boat ,a Sonic 28 with a Yanmar 6 LY ,I needed a bellhouse for a bravo to yanmar 6LY ,I called a lot of people in the US ,and did a lot of search ,but could not found a bellhouse ... I used a tailstock and a special made splined adapter to make the connection between enginea and drive,I was thinking about making one from a solid plate ali
If I only knew where to buy one back then...

Quote:

Originally Posted by 29Firefox

6LY series engine has a industrial SAE #3 flywheel & housing setup. Cummins 6BT has a SAE #3 housing set up and is sold in a sterndrive package with a bravo out drive

Look at the pictures above. Notice the bell housings are designed to hook up to a Merc inner transom plate.

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