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Diesel Poll
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JasonD
1st Mate
Detroit? Big green boat anchor GM's or MTU/Detroit?
tashmoo2
1st Mate
Detroit 6-71 natural
20,000 ours if you take care of it. lots of parts, not much that can go wrong
20,000 ours if you take care of it. lots of parts, not much that can go wrong
- Joined
- Sep 1, 2011
- Posts
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- Location
- Westbrook, CT (The Asshole State)
- First Name
- Bryan
- Boat Make
- 43 Tiara Open DDEC, GradyWhite 226, 18 Donzi Classic, 15 Boston Whaler Sport ETec 60
Haha, I'm the detroit vote, only cause I know them. My dad's old SportFish has 671's in it.
Thirsty but they seem to run forever.
Thirsty but they seem to run forever.
tashmoo2
1st Mate
My Harris has 6-71 natural. Every year I think about replacing it with C series Cummins. Engine has been in boat since 1980.
BillD
Admiral
- Joined
- Sep 1, 2011
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- 4,372
- Boat Make
- 27 H&H with Cummins QSB 5.9 480 power
I'm partial to the Cummins 6BTA 330/370 family.
I know the motor inside/out. Of course after you burn one up out of ignorance
and then spend the $money$ for the new one along with time, effort and money for a repower,
your learn REAL FAST !
Plus the 5.9 Cummins 6BT/BTA is the best inline 6 cylinder diesel every manufacturered. Super reliable, robust , easy to work on and parts are cheap.
Just MO
I know the motor inside/out. Of course after you burn one up out of ignorance
and then spend the $money$ for the new one along with time, effort and money for a repower,
your learn REAL FAST !
Plus the 5.9 Cummins 6BT/BTA is the best inline 6 cylinder diesel every manufacturered. Super reliable, robust , easy to work on and parts are cheap.
Just MO
No Bill I couldnt agree with you more.. they have a long history,,the cummins is used in all sorts of applications as we all know.,. the 6bt is in the dodge rams.. the 4bt is also widely used in the bread trucks and a lot of boats have them too..in my opinion I am partial to motors that have less electrical BS on them and obviously the parts being easy to come by (new and used) is a plus..I like the old detriot 671s and 471s but they are heavy and LOUD.. I worked on a few of them on tugs and an offshore supply boat... both were 671s that they used for the generators.. easy to work on and I dont remember the parts being that hard to come by at the time because the cylinders were the same for most of the engines and unlike CATS you could just put new sleeves in the engines instead of having to reman the block..
tashmoo2
1st Mate
Bill & Bill,
Everyone knows when I am leaving and returning to dock. I need 390 HP to make engine replacement worthwhile. I thought the C series was best Cummins, not the B. Is there a reman program for the B (around 390 HP) like for the C so you can get like new engine without the electronics?
Everyone knows when I am leaving and returning to dock. I need 390 HP to make engine replacement worthwhile. I thought the C series was best Cummins, not the B. Is there a reman program for the B (around 390 HP) like for the C so you can get like new engine without the electronics?
BillD
Admiral
- Joined
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- Boat Make
- 27 H&H with Cummins QSB 5.9 480 power
Nope, the RECON 6BTA 370 is the largest hp avaialble in the mechanical 6B.
The latest electronic QSBs 380 hp and up arae avaialble as "new" RECONs.
BTW, the Cummins marine RECON program in either the 6BTA,6CTA, QSB or QSC is a very good bargain. Other than the factory rebuilt Borsch injection pumps, the WHOLE package is new. Aftercoolers, starters, alts,blocks, heads etc.
The latest electronic QSBs 380 hp and up arae avaialble as "new" RECONs.
BTW, the Cummins marine RECON program in either the 6BTA,6CTA, QSB or QSC is a very good bargain. Other than the factory rebuilt Borsch injection pumps, the WHOLE package is new. Aftercoolers, starters, alts,blocks, heads etc.
JasonD
1st Mate
any of the 71 series that are naturally aspirated will go forever.
tashmoo2
1st Mate
Thanks Bill. I will check prices. What is continuous rpm for 370 and what HP can you get out of it
CEShawn
Admiral
How come I do not see Volvo up there?
I know how people feel about Volvo but until I bought one and now have really worked on mine I actually think I would consider buying another one. I have a TAMD41PA which is one of their good ones to start with. I've done just about everything from above the engine deck and have been amazed at how for 14 years old how good it looks inside at 2,000hours. People with this disimiliar metal thing, perhaps at one point for sure, but they have things pretty tuned down I think even with these. There is alot of isolation of components that I like, everything just looked put well together. The parts can be expensive but from what I compare it looks like its not as large of a gap as before. I also think when you buy a new engine there is a thing if the part isn't to you in so many hours, its free. I think its a really well engine put together.
I can tell you haven't been to happy with Cats but I like how there is information on the engine widely available as well as parts. I installed a 3406E in our HH40 and it was interesting to do that. The aftercooler core had a been wipe mark down the side of it, I tried to return it to Cat but it fell within their specifications. That didn't put me off on the right foot, I want a tip top everything when I just paid $65,000 for the engine. I'm a firm believer in removing the aftercooler before even installing the engine to make sure there are no problems down the road with it and for this we needed to do it for the application. Then on sea trial, engine never came up to operating temp, engine was shipped without a tstat, no big deal as I know different applications could have different tstats. At 800 hours the oil pump housing failed, wiped out the turbo, 2 cylinders and a bunch of other stuff. It was two months but Cat did replace that engine for us. I do know that we sold the boat with 50 hours on it and at 70 hours it blew a turbo that had to be replaced.
One other thing that never made me feel comfortable is I worked on a ship with 5 Cat 3608 generators. Our first major service period was at 6,000 hours on them and I had a chance to work on three of them for the first time. Everything was all hunky dory until I did the last one. That last one had all different length bolts in all the wrong area's. I was amazed to find that, couldn't believe it. This was taking off the after-cooler, three t-stat housings and a all accessories. I really wondered about the QA with all that.
I wish EMD made a range 350HP engine! Okay, so maybe a 6-71 will do.
I know how people feel about Volvo but until I bought one and now have really worked on mine I actually think I would consider buying another one. I have a TAMD41PA which is one of their good ones to start with. I've done just about everything from above the engine deck and have been amazed at how for 14 years old how good it looks inside at 2,000hours. People with this disimiliar metal thing, perhaps at one point for sure, but they have things pretty tuned down I think even with these. There is alot of isolation of components that I like, everything just looked put well together. The parts can be expensive but from what I compare it looks like its not as large of a gap as before. I also think when you buy a new engine there is a thing if the part isn't to you in so many hours, its free. I think its a really well engine put together.
I can tell you haven't been to happy with Cats but I like how there is information on the engine widely available as well as parts. I installed a 3406E in our HH40 and it was interesting to do that. The aftercooler core had a been wipe mark down the side of it, I tried to return it to Cat but it fell within their specifications. That didn't put me off on the right foot, I want a tip top everything when I just paid $65,000 for the engine. I'm a firm believer in removing the aftercooler before even installing the engine to make sure there are no problems down the road with it and for this we needed to do it for the application. Then on sea trial, engine never came up to operating temp, engine was shipped without a tstat, no big deal as I know different applications could have different tstats. At 800 hours the oil pump housing failed, wiped out the turbo, 2 cylinders and a bunch of other stuff. It was two months but Cat did replace that engine for us. I do know that we sold the boat with 50 hours on it and at 70 hours it blew a turbo that had to be replaced.
One other thing that never made me feel comfortable is I worked on a ship with 5 Cat 3608 generators. Our first major service period was at 6,000 hours on them and I had a chance to work on three of them for the first time. Everything was all hunky dory until I did the last one. That last one had all different length bolts in all the wrong area's. I was amazed to find that, couldn't believe it. This was taking off the after-cooler, three t-stat housings and a all accessories. I really wondered about the QA with all that.
I wish EMD made a range 350HP engine! Okay, so maybe a 6-71 will do.
Tower Todd
1st Mate
Too bad Lugger isn't on the list. They are popular in the NW.
Thanks for the feedback.. Volvo and Lugger have been added and yes they should have been up there to begin with..I just came up with the poll by the motors I could think of.. should have thought longer!
Pedlyr
Captain
I wish EMD made a range 350HP engine! Okay, so maybe a 6-71 will do.[/QUOTE]
Yeah but it would probably weigh 4,000 lbs.
And right you are about CAT aftercoolers. They love that saltwater setup to get the intake air cool. Know all about it. Seen several 3512's and probably a baker's dozen 3406E's destroyed because of it.
BTW, nothing on the face of the earth is more expensive then Volvo parts.
Yeah but it would probably weigh 4,000 lbs.
And right you are about CAT aftercoolers. They love that saltwater setup to get the intake air cool. Know all about it. Seen several 3512's and probably a baker's dozen 3406E's destroyed because of it.
BTW, nothing on the face of the earth is more expensive then Volvo parts.
CEShawn
Admiral
Yes there is something more expensive than Volvo Parts... Volvo Service in SE Mass! Ha! I love my TAMD41PA and will deal with the pricing. I am lucky enough to have the skill to do everything myself at this point but almost needed help.
I will second you on the EMD for sure! I have literally taken the a gas turbine ship and last year a ship with EMD's around the world. One rock solid engine for sure and will run with just about any problem.
I think I like a Lugger, but really thought that are even worse with parts than Volvo? Bullet proof engine for sure...
I will second you on the EMD for sure! I have literally taken the a gas turbine ship and last year a ship with EMD's around the world. One rock solid engine for sure and will run with just about any problem.
I think I like a Lugger, but really thought that are even worse with parts than Volvo? Bullet proof engine for sure...
buckshot
Deckhand
It looks like the cummings is the best bet right now anyway,but everything seems to change in the marine diesel world!
gulf_of_maine
Deckhand
- Joined
- Oct 25, 2011
- Posts
- 43
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- 0
Volvo 30,000 if you barely trake care of it.
I'm not allowed to vote for some reason???????/// never mind ... It just showed
Last edited:
GoodChance
1st Mate
I really like the 6bt and 6bta engine. Very reliable. Easy to work on. Cheap aprts. Parts are widely available. Only thing I don't like about the 6b's are the noise. The exhaust noise is really bothersome to me. The 6cta doesn't bother me at all. I love the sound of a cat 3208. But the 6bt and 6bta are loud.
The purchase of the 32 Holland is getting closer and I am looking for an engine. Leaning towards a bta but the noise is making me pause. I don't have room for a muffler. Suggestions?
Maybe an underwater exhaust like Clarke Island commonly installs? Andy .... have you installed an underwater exhaust on a 6bta? What was the back-pressure?
The purchase of the 32 Holland is getting closer and I am looking for an engine. Leaning towards a bta but the noise is making me pause. I don't have room for a muffler. Suggestions?
Maybe an underwater exhaust like Clarke Island commonly installs? Andy .... have you installed an underwater exhaust on a 6bta? What was the back-pressure?
