MTU 16V2000 in frame

[Pascal]

Not in a Hatteras but since there are many Detroit fans here I figure i d post a few pics of the office starboard engine rebuild

Started on Tuesday.. they already have all the turbos, manifolds and all 16 heads off. Found traces of coolant leakage in four aft cylinders. Still minimal and didn’t get into the cylinder but only a matter of time according to the mechanics. Engine has 3800 hours. Reason for rebuild was oil sample showing fuel trace in the oil and main bearing wear. Port was rebuilt last year. 4000 hours is pretty normal on these… next they’re going to drop the pan, and pull the pistons/liners out.

 

[Pascal]

Cylinders and pistons

 

[madhatter1]

So each cylinder has its own head?

 

[Captain Ralph]

So each cylinder has its own head?

Oh yea...
That's a great reason I luv the newer models from most of the mfgs.
Later exhaust logs are starting to become multiple mini logs per side.

 

[cww]

The Miami guys really get it done on engine rebuilds, it's a whole different mindset down there. When I needed my engines rebuilt all the local companies in Jacksonville had 3-6 month wait lists, and that's if you could even get them to show up or call you back to begin with. I said screw it and got guys from down there and paid extra for travel. They had everything done in a month and a half. That's despite anything that could go wrong did go wrong (like turbo housings were too far out of spec so needed new turbos, some rotten exhaust components that there was a wait on parts, a ton of stuff like that).

If I'd used anybody local I might have been back on the water by Christmas if I was lucky.

 

[HahnR]

The Miami guys really get it done on engine rebuilds, it's a whole different mindset down there. When I needed my engines rebuilt all the local companies in Jacksonville had 3-6 month wait lists, and that's if you could even get them to show up or call you back to begin with. I said screw it and got guys from down there and paid extra for travel. They had everything done in a month and a half. That's despite anything that could go wrong did go wrong (like turbo housings were too far out of spec so needed new turbos, some rotten exhaust components that there was a wait on parts, a ton of stuff like that).

If I'd used anybody local I might have been back on the water by Christmas if I was lucky.

Better at least. It took 10 months to get our 8v92 overhauled in the most God forsaken place there is to get any work done on a boat - Savannah, Ga.

It ran 349 hours before it sh*t the bed, at least we got it home. Called up Interstate Power out of Milwaukee, took 2 1/2 weeks from the time they first wrenched on it until the sea trial for a complete overhaul including them rebuilding one of the heads in house. Even at that they apologized because they had to work on another job for 5 days they had previously committed to during that time.

My father-in-law asked me at the time what I thought of them, I told him I didn't think they knew what they were doing - the lead mechanic called me at 6:45 am one morning, he was already on the boat & had been working for a while LOL.

That was in 2019, maybe a totally different story now, I don't know. Just saying it doesn't have to take months & months if they have a work ethic.

 

[Pascal]

Getting any work done these days is hit or miss. The worst is when you have reliable people who become… well unreliable to put it mildly. I just went thru this with a fiberglass and paint guy who I had been using for 10 years on a number of projects on my own boat and boats I run. Maybe $60k of work in the last 1 years. He just botched a $4k job on my 53 and wouldn’t make it right. He lost me as well as two jobs with boats on my pier. When neighbors see horrendous orange peel… they run!

A friend of mine just got a $4k bill, 20 hours of labor for two guys to pull an after cooler on a small Cat engine on a Cabo. That’s more time that it took to pull the turbos, manifolds and heads on this V16!

Last year they did the port engine in 5 1/2 weeks. This time they had time to order the parts, some had to come from Germany and have them prepped incl painting the heads etc.

 

[madhatter1]

I have a qualified 2 stroke Detroit diesel mechanic. I wait my turn and then pay the price, no questions asked. They are fair and don’t rip me off. Now at $129 an hour. But RV dealership charges $165 an hour. Yeah, I get that they have acreage of land and big buildings to pay for but the tech is not the sharpest spoon in the drawer!

 

[q240z]

Holy smokes, that engine is HUGE! Individual heads is a brilliant innovation.

How's the access to the bottom end?

 

[Pascal]

Holy smokes, that engine is HUGE! Individual heads is a brilliant innovation.

How's the access to the bottom end?

It s ok. Enough space between engine and stringers to drop the pan and do
The bottom end

 

[Pascal]

Well the inframe turned into a full rebuild as we discovered damage to the crankshaft. Took 3 months to get a new crank from MTU… cranks are made in India, shipped to Germany for quality control then shipped to MTU Michigan and then to Miami. That crank has already racked up quite a few miles

We finally did the sea trial today.

Here is a video of the full rebuild

https://youtu.be/AK35Bz9uRWc

 

[madhatter1]

Cool video. Curious. GPH combined at 2000?

 

[Captain Ralph]

cranks are made in India,

Since we have already discussed MTU/DDC parts coming in from parts of the world, Ya need to comment on your starter issue.

 

[Pascal]

Cool video. Curious. GPH combined at 2000?

110 gph combined at 2000 doing 21.5kts in calm water. Pretty good for a 116 footer.

 

[Pascal]

Since we have already discussed MTU/DDC parts coming in from parts of the world, Ya need to comment on your starter issue.

I mentioned it earlier in another thread in reply to an accusation of political china bashing

This morning when I went to fire up the port engine to check the hydraulics after some maintenance, the starter spun but wouldn’t engage. It was just over a year old… I had the guys pull it and install the original that we had rebuild last year off the port engine. Turns out MTU now get starters built in china by Prestolite and to make things worst they no longer have parts to rebuild the older style starters.

Glad I had a spare and I am keeping the original starter we pulled off the starboard engine.

The funny thing is that yesterday we spent some time organizing parts and we stored the spare starter up in the attic behind the RPH after having it the ER for 15 months…. That jinxed it

 

[madhatter1]

110 gph combined at 2000 doing 21.5kts in calm water. Pretty good for a 116 footer.

Thanks! .22 SMPG makes my .6 SMPG feel like an econo cruiser.

Yeah, yeah, I know you drive a bigger house around. But it certainly does put my fuel burn into perspective.

 

[Pascal]

Thanks! .22 SMPG makes my .6 SMPG feel like an econo cruiser.

Yeah, yeah, I know you drive a bigger house around. But it certainly does put my fuel burn into perspective.

A friend of ours has a 2013 or 2012 80’ Hatteras MY with C32s. He burns about the same at 22/23kts…

Most of the time we run at 11/12kts burning 25gph. Not bad considering.

 

[Dan Mapes]

Why does 4000 hours make me think these are like solid fuel rockets? Especially since the majority of cruising is at lower power settings.

 

[Pascal]

MTU maintenance schedule calls for a an inframe at 4000 (pistons, heads, bearings etc) but this one apparently had suffered a raw water pump failure at some point which was not discovered right away. There were traces of rust on the crankshaft with scoring.

Based on total fuel burn about 60% of hours were done on plane. We run quite a bit at hull speed and when I run on plane it’s usually at 1800/1850 or 55-60% load and 18-19kts. But previous captains may have been heavy handed and cruise at 75%…

 

[capttonyf]

I saw you mentioned your cruise RPM burn.

Do you know the combined burn at like 700, 800, 900, 1,000 RPM? I have a guy thats wondering if he purchased a 70C could he get a 1.0 nauticle mile per gallon at say 9-11 knots.

I figure at Idle its probably 6 GPH at about 6-7 knots, but wondering if it'll still get 1 mile per gallon at 10 knots.

He'd also considering a 65c with CATS preferably. 16V92's I'm sure burn a little more.

Anyone have any insight on this?

Thanks
Tony