MAN 1100 diesel rebuild

Jorge,

Your thread has been re-titled. I doubt "MANGranades" is a word ever indexed by Google and for sure it has no relevance on YachtForums. Top of the Technical forum is a sticky asking you to please use descriptive titles for best indexing.

When people ask what kind of power I have I tell them MAN Grenades. It always gets a chuckle. I tell people I wear a flak jacket and a helmet when I do engine room checks while underway. Hang them up next to the engine room door next to the ear muffs.

I thought all those engines with weak Pistons were up graded. My 820's have been great. -base engine for the 1100. I,'d be interested in seeing rebuild estimates. How many hours on your 1100's

I would guess to do them right would be $40-50k each, access is everything in determining the number. In a commercial boat with access to everything probably even less, like $35k

Those would be the mechanical V10s?
Good engine.
Access is everything and prayers the crank is in good shape.
Look yourself, can the techs get to all? Overhead room to remove the manifolds and heads?
Room to drop the oil pan(s)?
Tight & hot area?
Can you tell us on what boat and model? Hopefully not a SR.

Lots of MAN fans here. I work on them when I have to, I'm not a fan.
I think all can agree, it's not cheap.

With good access, starts from $2500 to $3500 a lung done rite.
Ad another $10K per engine if it's a PIA and small area and hot. Double all if new crankshaft needed.

Please ask your shop what is included in done rite.

Could be the D2842-LZE, V-12 1100 hp. Also a mechanical.

I agree with Beau, I though that all the MAN's from that era got the piston upgrade. Maybe a couple slipped through the cracks here or there, but our dealer told us that there was an active search to find them all and get the upgrade done.

Wearing a flak jacket and helmet in the engine room? That's a bit extreme.

We're talking about 23 year old motors. Chances are they have 6,000 + hours on them and simply need to be rebuilt from wear.

In any case, the "MANGranades" label removed by Carl doesn't seem like it would be relevant 23 years later.

No, I personally know of a set of the 10 cylinder 820's in a 2001 50' Post that has over 6,500 hours and they still run good. The owner had the top end did the heads and injectors done 200 hours ago, just because, and the cylinders still all looked great. I've never had any internal issues with MAN's. Just sensors and electrical boards and electrical stuff. I like them, parts are expensive and synthetic oil in the common rails is also, but they're smooth, quiet, fuel efficient, and just a good fit for a lot of boats. My guess is the OPs engines just have lots of hours.

My MANs (820s) have been great so far. I have been proactive on my maintenance, had my fuel pumps rebuilt, turbos gone thru and blueprinted, replaced both raw water pumps after rebuilding twice, replaced all injector lines. But the parts and service are expensive and if I had a choice of power on the next boat my preference would be CAT. I was joking about the flak jacket and the helmet.

I go round and round with this in my head sometimes. Man's are always slightly more economical than CAT's, not much but 3-5% in fuel burn. Man's, it is more expensive than CAT's for routine maintenance, unless you're using them a lot which most yachters don't. When you figure in the CAT oil change/service is required every 250 or 200 hours depending on the engines, and the MAN is 400 hours. If you're doing close to 400 hours then it actually comes out a little cheaper. Electrical parts are for sure more expensive. But, in some boats the MANs are a much nicer fit. I ran a new 70' Princess the other day with 12 cylinder MANs, 27 knot cruise. You didn't hear the engines ANYWHERE on the vessel, not in the salon, not on the bridge, not on the aft deck, the propulsion was smooth. I don't think that would be the case if it were a Cat boat. Cat, since it's primary market is heavy machinery, doesn't focus on N+V reduction. Some boats the CATs are superior with their torque...…..But each yacht seems to have 1 engine brand/size that is most suited to it.

I am going to agree with Skippy J; MANs seem quieter and smoother. Even the old mechanicals just have a better tone and feel to them.
There are some other sources for some sensors but all parts/spares/service items are more expensive.
Some filters will cross reference over to another brand but all OEM parts are shipped into Jax from my sources in Houston or Miami.
Just not many MAN owners around here.
Synthetic oils for CRs have to be reserved also. Our Mobil Oil Distributor stocks very little or is usually out.
Amazing for a V8, but when those 900CRs run well, it's sweet.
All know I'm a 71 puke. My next fave would be Cats.

Back to the OP, George; Some questions your way, can you give us some more details behind your original query?

Capt Ralph,
The best place I've found to buy Mobil 1 Delvac 5-40 is Rural King Farm Stores. 5 gal bucket $119 and if your a veteran 10% off that.

Closest one in Gainesville. That's a good end price. We use the ESP from our vendor.

Usually know when one of the transient customers are coming thru, send a note and all we need is in within 6 days or less. Just takes planning.
When our heavy techs come in, they bring the Red oil.