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Old 04-06-2016, 11:29 AM   #121
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Hi,
Remwines, did you by any chance 'race balance' the Cummins, I've done a couple and it makes a great job in a marine engine.
Well done, the engine looks really sweet.
No, it has the stock dampener and I didn't do anything to the rotating assembly. Are you talking about balancing as you would do to a gas racing engine?

I ran the engine that varying rpm's for 1.5 hours on the stand. It seems to run fairly smooth at all speeds and I didn't have to chase it around the shop. It's going in a full displacement trawler and will be ran at 1800 to 1900 rpm 95% of the time.
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Old 04-06-2016, 01:15 PM   #122
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Hi remwines,
Yes if it gets the full race balance tuning it certainly runs sweeter and there's a noticeable difference in smoothness = less vibration, noise.
You certainly have it looking well, congratulations.
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Old 04-06-2016, 01:23 PM   #123
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The Cummins 6B is a naturally very smooth running engine.
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Old 04-06-2016, 01:54 PM   #124
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We use them in the family business to drive pumps and blowers and they're smoother and a tad sharper when they're race balanced.
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Old 04-06-2016, 02:19 PM   #125
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They're ok, but smooth would not be a word I would use in there description. Thats the reason Chrysler changed the motor mounts in the second gen Dodge trucks to a large soft encapsulated design. The first gen trucks shook like a dog $hittin a peach seed. The high RPM balance for racing/pulling is mostly to keep the engine together beyond 4000 rpm, and really does make it smooth at low RPMs. But its expensive and takes a lot of Mallory metal. I cant imagine it would be anything that a boat owner would want to do, that and the miriad of other things required to make it work. But, if you're looking for a 750 HP 6BTA, it can be done. I can see it now Trawler racing, kinda like Lobsta boat racin only slower.
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Old 04-06-2016, 07:28 PM   #126
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I may have one or race engine left in me, but it won't be for this boat. Normally only need 50 to 60 hp. With 750 hp I could plow a deep troth.
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Old 04-07-2016, 11:53 AM   #127
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...The first gen trucks shook like a dog $hittin a peach seed. ...
Now THAT is an image I can't get out of my head!

Quote of the day that is...



Later,
Dan
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Old 04-09-2016, 05:57 AM   #128
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Repower the "KOKANEE"

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I have ’79 DeFever Down East 40 with the original single Ford SSD 655M engine. The engine runs fine, smooth and starts quickly, but it is a very obscure and obsolete engine. I have run across only one boat shop that has even heard of this engine. It is the same engine as the Iveco Aifo 8061.04*05G made by Fiat, just marketed by Ford in the USA in the late 70's. Parts are nearly impossible to find today.

I keep the boat in the SF Bay area and if I were going to just cruise locally, I would probably leave that engine in place. But I plan on running it up to the Puget Sound for a couple of seasons, and making the inside passage to Alaska at least one time is on my bucket list. I just do not have enough confidence that this engine will make the trip. So my obvious question is; what are the smartest repower options. I can have a new modern engine dropped in, but I also have the shop and skills to rebuild a take-out marine engine. Here’s some of the current specs on the boat.
• DE 40: (same hull as DeFever Passagemaker), 30,000 lbs full displacement
• Engine: Ford SSD 655M, Inline 6, 117hp, 2300 RPM full throttle
• 6.9 knots @ 1900 RPM
• BW transmission (don’t know gear ratio, will check)
• 25x19 three blade prop
I am shooting for the same or a bit more speed. I have been reading posts from the Trawler Forum and DeFever Cruiser Forum. Cummins BT6 and John Deere variants’ seen to be popular. I like simple, so I am somewhat concerned with newer electronically controlled and turbo engines. They may increase efficiency and performance, but in my mind they have more things to fail. I’d hate to be stuck in a British Columbia fiord with a failed electronic engine component.

It will be a couple of years before I make the Alaska trip, so I am in no particular rush to repower. But getting it done sooner will allow more time for me to shake out the bugs. Any opinions or personal experiences will be greatly appreciated.

Thanks!

Bob Mills
A good engine would be the Propulsion engine:3026 from Caterpilar,
its a NA engine 125hp at 2500 rpm. (almost same engine as the 6 cyl.
6 litre.= 354 cu.inc. Perkins.)
- wellproven and ease of maintaining.!

Also a good + when resale..
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Old 04-09-2016, 06:49 AM   #129
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Iveco Aifo 8061.04*05G made by Fiat

Iveco is still made by Fiat If you can find a spec sheet you might find a current engine that has the same footprint.

You may also find an older engine from a similar series that could be purchased rebuilt

More speed in a displacement boat usually takes massive power.

OK if the fuel burn doubles with EACH extra knot of speed?
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Old 04-09-2016, 07:51 AM   #130
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Quote:
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Iveco Aifo 8061.04*05G made by Fiat

Iveco is still made by Fiat If you can find a spec sheet you might find a current engine that has the same footprint.

You may also find an older engine from a similar series that could be purchased rebuilt

More speed in a displacement boat usually takes massive power.

OK if the fuel burn doubles with EACH extra knot of speed?
I saw one of these at the boat show a few years ago. Brand spanking new with all of the accessories for $11k. I thought it was a pretty damn good deal.
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Old 04-09-2016, 08:05 AM   #131
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I saw one of these at the boat show a few years ago. Brand spanking new with all of the accessories for $11k. I thought it was a pretty damn good deal.
Italian people are lovely; my step father was from NE Italy.

Have you heard of this saying...

Styled in Italy, built in Germany, and finished in English connely leather.

Dont get the order of that sentence mixed up.
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Old 04-09-2016, 12:18 PM   #132
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WHAT?

You don't like LUCAS "Prince of Darkness electric stuff?
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Old 04-09-2016, 01:13 PM   #133
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WHAT?

You don't like LUCAS "Prince of Darkness electric stuff?
Your discription of lucas is frightingly accurate; the wiring in my dads Jag used to go wrong every couple of weeks without fail.

Nightmare ....
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Old 04-09-2016, 01:44 PM   #134
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I have a NOS bottle of this if anyone need to refill.
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Old 04-09-2016, 02:55 PM   #135
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Lay off Lucas. They invented the self dimming headlights and intermittent windshield wipers, by accident of course.
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Old 04-09-2016, 03:03 PM   #136
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Lay off Lucas. They invented the self dimming headlights and intermittent windshield wipers, by accident of course.
Lol!

I've got a little Chinese monkey bike on the boat and memories of British wiring have come flooding back...

Ignition key flooded with rainwater , shorted out after 3 months; had to wire across it.
Insulation is as soft as butter; had to tape joints with insulating tape to stop shorting.
Indicator lights keep on blowing with the vibration.

.....and to cap it all, if the engine stalls at night time all the lights switch off even with a fully charged battery; can you believe it?

Actually maybe Lucas wasn't that bad!
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Old 04-09-2016, 04:11 PM   #137
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I have a NOS bottle of this if anyone need to refill.
Now THAT is funny.
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Old 04-09-2016, 05:06 PM   #138
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Good engine to run after one of those pesky North Korean emp strikes
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Old 04-09-2016, 05:52 PM   #139
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Lay off Lucas. They invented the self dimming headlights and intermittent windshield wipers, by accident of course.
Why won't my MGB start?
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Old 06-20-2016, 08:45 AM   #140
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Why won't my MGB start?
If the "B" stood for Buick it would!
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