Marine diesel

[HPSimpson]

My vessel is at the Caterpillar dealer he stated this morning engines don't need overhaul want to see my reaction, he had send sample of engine oil to Cat office, said been three years since last oil change out, you have change oil filters all six of them and all four of primary fuel filters, plus four secondary fuel filters. I said the starboard engine generator is making noise doesn't sound like belt. Ask would change out oil in the auxiliary port generator the Oman 30k It's the ship main gen set. The starboard one don't touch 25k unit for high pressure air compressor on deck, yep said one of mechanic cannot read well learn big lesson last year.

 

[HPSimpson]

Oh the hour meter I was reading was for our Port vessel or ships generator not the engines, the starboard generator is use only for high pressure air compressor plus 5000psi, for filling scuba and re-breather tanks.

 

[HPSimpson]

3412E 1015 BHP. finished weight around 6400 per engine. The Cummins (I think this is the one) KT38 dry was around 9000. It's not just the engines to consider but all of the associated systems that are proprietary to the Cat.

So what are your though on new engines or are you leaning toward rebuilding current engines, 6000 pounds is big amount of weight as your vessel was never design for will need marine design engineer to figure the balance act out, let us no what your thinking is here.

 

[CBari]

Not sure why very little mention on the John Deere units, they are extremely popular in the dive industry on most dive boats through out the Caribbean. Local Deere engine dealer does Marine and Generator units world wide. http://www.enginespower.com/marine.html

 

[BoeingDiesel]

Rebuild is the way to go in this situation and while the vessel is in dock can do a hull survey, gens', trans, bait pumps and so on, and so on... just the cost of owning a fun hole in the water.

 

[SnoKing]

Rebuild is the way to go in this situation and while the vessel is in dock can do a hull survey, gens', trans, bait pumps and so on, and so on... just the cost of owning a fun hole in the water.

Nice thing about old 71 series Gray Marine/Detroit diesels(and the other cylinder displacement sizes) was the ability to rebuild them with out removal from the boat. That is me at 16-17 years old back to camera putting a Navy surplus 6-71 in our Sea Scout Ship 1960-61. We later burn down to pistons with 90 injectors and governor in battle mod racing the local USCG 40'er. We removed the head and then removed all those mounting rail bolts except one on each side at the back of the twin disc transmission and jacked up the front of the engine, then dropped the pan and put in two new cylinder liners and pistons. And replaced the 90 injectors with high lift 70's. The two cycle GM/Detroits were a marvel of engineering, with symmetrical blocks and many other parts. 2,3,4,6,8 etc cylinder counts used many of the same components.

Then had a couple negative things going! They were fuel hungry, dirty on emissions and could run away on crack case oil. The picture of the Chevy Titan 90 class 8 tractor I drove in the mid late 70's had a 8V71 350HP Detroit with a 13 speed Road Ranger. It average only 4.5 MPG at half full/half empty usage. Empty the combo weighed in at light 25K.(trailer 10K, tractor 15K) Trailer was aluminum and along with the tractors frame and cab.

 

[HPSimpson]

Rebuild is the way to go in this situation and while the vessel is in dock can do a hull survey, gens', trans, bait pumps and so on, and so on... just the cost of owning a fun hole in the water.

Very wise decision can you do most of the work haul equipment to machine shop, do you do the hull inspection underwater, or have surveyor do it. My hull was painted last year so should last at least 18 more months before needing that chore again, when I dive I do look the hull over carefully at the fittings and engine intakes. Remember this one of the places where we pour money into hole in the water enjoy!

 

[BoeingDiesel]

Dang HP...I'm tellin' ya' there's critters down there watching your six
Nah, it's got to be pulled. Remove shafts and check for true, send the wheels for inspection and balance, new boxes, raft for recert., fire suppression and the list goes on and on.

 

[SnoKing]

Dang HP...I'm tellin' ya' there's critters down there watching your six
Nah, it's got to be pulled. Remove shafts and check for true, send the wheels for inspection and balance, new boxes, raft for recert., fire suppression and the list goes on and on.

How about a picture of this vessel?

 

[BoeingDiesel]

How about a picture of this vessel?

Personally, I'm not much one for pictures but I would imagine the wifes 25 or so hard bound albums have some of the boat.

 

[HPSimpson]

Dang HP...I'm tellin' ya' there's critters down there watching your six
Nah, it's got to be pulled. Remove shafts and check for true, send the wheels for inspection and balance, new boxes, raft for recert., fire suppression and the list goes on and on.

Yes there are all sorts sharks little ones, California Blue sharks the most I see around Catalina and Santa Cruz Islands, been few years since I seen the landlord ( Great White )

 

[BoeingDiesel]

Yes there are all sorts sharks little ones, California Blue sharks the most I see around Catalina and Santa Cruz Islands, been few years since I seen the landlord ( Great White )

A little off topic but around thirty or so years ago my best bud’ and I were fishing off the coast of Loreto Baja. We were a few miles offshore in a 20’ panga in mid July and it was ripping hot and we had topped off in Dorado so my buddy Bob yells to me, “Yo Greg I’m going for a swim, “ and he dove into the dark blue Cortez and I followed suit. Our Pangero just about had a coronary yelling at us to get back in the boat and he was dead *** serious. He kept yelling “Calamar grande!” over and over. We climbed aboard and he was very upset with us…all he said was, “We go in now.’ At the time my command of the Spanish language was very limited so when we beached I asked one of the guys that was going to fillet our Dorado what the big deal was and he just shook his head as if to say, “Dumb Gringos”…loosely translated to his language “Estupido Culo”. As it turns out the channel separating Loreto and Isla Carmen is a known area for the Humboldt squid which are serious predators. I did a little research on the critter when I got home and never went for an offshore swim in the Cortez again.

There is something about descending into the blue that just doesn’t seem right. Many years back I remember giving Harvey Barlow, a retired submariner E8 MCET and past member of the TDR a little flac. Man gets in steel tube secures hatch floods the tanks and down he goes…no thanks. I think his response was something akin to the opposite of man getting into tube and climbs to 30,000.

 

[HPSimpson]

How is the rebuilding on your 3412 coming along, along with pulling the shafts then re-balance, fix the dings in the wheels the list goes on forever. My 470 Cat was way more carnage starboard front part lower side couple pieces replaced. Run the racks both engines check shaft's no dings on the wheels. Soon be able to return back to service, been using 18' scuba diving backside of Santa Cruz Island saw couple of your best friend couple six to eight foot ( landlord ) type moving along 85 feet of water.

 

[BoeingDiesel]

A few more weeks before the pullout. It's going to be a lengthy process.
My best friends...that's a hoot 18' skiff off Santa Cruz?...no thanks...but then again...you did fly the "A" model and that does take some stones.

 

[SnoKing]

A little off topic but around thirty or so years ago my best bud’ and I were fishing off the coast of Loreto Baja. We were a few miles offshore in a 20’ panga in mid July and it was ripping hot and we had topped off in Dorado so my buddy Bob yells to me, “Yo Greg I’m going for a swim, “ and he dove into the dark blue Cortez and I followed suit. Our Pangero just about had a coronary yelling at us to get back in the boat and he was dead *** serious. He kept yelling “Calamar grande!” over and over. We climbed aboard and he was very upset with us…all he said was, “We go in now.’ At the time my command of the Spanish language was very limited so when we beached I asked one of the guys that was going to fillet our Dorado what the big deal was and he just shook his head as if to say, “Dumb Gringos”…loosely translated to his language “Estupido Culo”. As it turns out the channel separating Loreto and Isla Carmen is a known area for the Humboldt squid which are serious predators. I did a little research on the critter when I got home and never went for an offshore swim in the Cortez again.

There is something about descending into the blue that just doesn’t seem right. Many years back I remember giving Harvey Barlow, a retired submariner E8 MCET and past member of the TDR a little flac. Man gets in steel tube secures hatch floods the tanks and down he goes…no thanks. I think his response was something akin to the opposite of man getting into tube and climbs to 30,000.

Three guys in a small rented boat off the coast of Mexico loose engine power and are drifting farther to sea. One says, one of us has to swim the shark infested water to get help. The Doctors says "I have to stay to provide medical care". The priest says "I have to stay to provide spiritual support". The lawyer says "I can go and will be find, professional courtesy is in play here"

 

[CVR222NV]

“Estupido Culo”

I'm no expert in the spanish language but believe that the correct translation is "Dumb A$$"

 

[JLEONARD]

A little late perhaps, but if I did another repower it would once again be with a Cummins 6BTA. I repowered an old Mainship from a single Perkins 160 to a Cummins 6BTA 270 in 2000. Nothing really wrong with the Perk but getting parts was next to impossible.
The Cummins was an easy fit and the extra ponies made it a whole new boat.
I've also recently sold an old trawler that had a Ford-Lehman natural in it. very reliable but a PIA cause the injection pump needed an oiol change every 75 to 100 hours. Other than that it had 4700 hours on it when I sold the boat last year and was running perfectly.
But Cummins shines above all of them imo. Easy to work on, plenty of parts around, and very durable if you run them within their specs.

 

[SnoKing]

A little late perhaps, but if I did another repower it would once again be with a Cummins 6BTA. I repowered an old Mainship from a single Perkins 160 to a Cummins 6BTA 270 in 2000. Nothing really wrong with the Perk but getting parts was next to impossible.
The Cummins was an easy fit and the extra ponies made it a whole new boat.
I've also recently sold an old trawler that had a Ford-Lehman natural in it. very reliable but a PIA cause the injection pump needed an oiol change every 75 to 100 hours. Other than that it had 4700 hours on it when I sold the boat last year and was running perfectly.
But Cummins shines above all of them imo. Easy to work on, plenty of parts around, and very durable if you run them within their specs.

My dad had a Grand Banks 32 with a Ford-Lehman 120 and I always changes the Simms pump oil every time crankcase oil was changed. Mid-Late 1970's. And the coolant hose went through the belt, so it was wise to put an extra one on and tie it back out of the way. Then the oil filter was upside down! I took this little maintenance course at the Seattle boat show, and the instructor said do any of you spill oil taking the filter off, and most hands went up!!! Then he said "You do know that the bracket has two bolts and hoses from the filter housing to the block?" Light bulbs came on around the room!!!

 

[JLEONARD]

That was a crazy v belt arrangement for sure. I had one tie wrapped in place for 14 years. Lol.
I never flipped the oil filter. I would punch a hole with a screwdriver and let it drain but I probably should have flipped the bracket.

 

[BoeingDiesel]

A little late perhaps, but if I did another repower it would once again be with a Cummins 6BTA. I repowered an old Mainship from a single Perkins 160 to a Cummins 6BTA 270 in 2000. Nothing really wrong with the Perk but getting parts was next to impossible.
The Cummins was an easy fit and the extra ponies made it a whole new boat.
I've also recently sold an old trawler that had a Ford-Lehman natural in it. very reliable but a PIA cause the injection pump needed an oiol change every 75 to 100 hours. Other than that it had 4700 hours on it when I sold the boat last year and was running perfectly.
But Cummins shines above all of them imo. Easy to work on, plenty of parts around, and very durable if you run them within their specs.

Going with 2 brand new Cummins would be great but that would add about 6000+ Lbs Dry weight to the hull and may require all new matching peripheral controls, engineering, and I think the Cummins I was looking at QSK38? was counter rotating Vs. current power.