Hatteras vs Luhrs

bbilly

bbilly

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Hi MBers,
I am looking at sport fishers (Convertibles) 10 - 12m for Caribbean use. Mostly tied up but OK as a liveaboard for max a couple for short (1-2 months) periods and for fishing trips. Euro against the US$ makes some good boats available. I was looking at Hatt 36s mid 80's and later Luhrs prices $80k - $100k (€50k -€65k). What are your opinions on these marques.

TIA

Billy
 
The Viking 41 looks very nice, Tiara? Yeah I have read the Hatt 36 Convertible review and he rates it a "best buy". It does look well made. I am also interested in ball parking maintenance and running but i'll open another topic. Thanks for the pointers.
 
Strong boats indeed .... these and of this age may have Detroit diesels onboard ...

Be a little bit aware of the 6/71's at 450 hp and above (JT did them up to 485)... It is quite common that these are slighlty over propped and if they do not reach full RPM at WOT they will be overloaded and may have to be re-conditioned (£1800 per hole).... The fishermens are run hard, long at idle, then run hard again, so please get a engine surveyor from a good Deroit dealership when you encounter these... At anything below 410 hp on a 6/71 they should be virtually bullet proof...
 
[ QUOTE ]
Strong boats indeed .... these and of this age may have Detroit diesels onboard ...

Be a little bit aware of the 6/71's at 450 hp and above (JT did them up to 485)... It is quite common that these are slighlty over propped and if they do not reach full RPM at WOT they will be overloaded and may have to be re-conditioned (£1800 per hole).... The fishermens are run hard, long at idle, then run hard again, so please get a engine surveyor from a good Deroit dealership when you encounter these... At anything below 410 hp on a 6/71 they should be virtually bullet proof...

[/ QUOTE ]

Alf, this is the info im searching for what does maintaining these engines mean.
THis ones got Detroit 410s

http://www.yachtworld.com/core/listing/b...=57289&url=

Where I'm going (Cuba) spares aren't off the shelf and with the embargo what could I be in for?

Got an idea how much these burn, diesel is 40p a litre and routine maint costs on "sound" surveyed engines?

TIA



Thanks

Billy
 
would go for the Hatt 38 Convertible such a good all rounder, comfortable and a fantastic seaboat
Viking would give a good battle also and same a Bertram

if you dont want an overbuilt monster in line with the 3 US stars, check also Riviera similar build quality to Tiara altough this later one might be better finished
with the old 80s early 90s Hatt check well for some blistering
 
The 6/71's at this rating should be 20,000 hour engines easily, so plenty of life left here... if well maintained and not overloaded.

Get serial no's for the engines, call Detroit and get the original selivery spec on the engines... will tell you all std equipment delivered and configuration, which will let you know if they have been up/down rated at some stage.. (easily done with change of injectors @ £60 each).

Souds like some stuff spent on the engines, as syncronisers were not installed on these mechanical lumps originally, so cool if they have as it is an indication of serious comittment to caring for the iron lumps, which weighs near 1500 kg each !!

Maintenance for these fully mechanical lumps is easy and I do all myself ... injector timing and exhaust valves are straight forward and take more patience than skill. Oil & fuel filters are among the cheapest one around @ £ 9 and £4.25 each.. Give them good oil (straight SAE 40) and clean fuel and they'll go on forever...

Fuel consumption depends on the boat's configuration but have a look at our figures which are calculated as +20%..

Spare parts should be OK to get by as all main parts for the 71 and 92 series, from two cyl, to V16's are interchangable .... and there are litterally 100's of 1000's of these around in fishing fleets and as industrial machines around the world...from buses, cranes to offshore pumps.... generally easy to work on and smooth as anything (when I've done a tune up on mine, I can balance a 50 pence on the edge on top of the governor after a cold start).

Not as economical as modern lumps, but where you're going, I would not have anything else (I wanted a boat with Detroits for ease of access to parts in remote areas)... and seem to recall that the 6/71 is hailed as the most reliable engine Detroit ever built....

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Alf, this is amazing stuff. So if I am running 2 of these lumps at say 1925rpm the calc .80 * 2 (engines) * 19 (mph) = 30.4 USgals / hour. The boat weighs 26,500lbs + me and my possessions and friends.

The spares situation seems optimal, even for Cuba where the keep 50s Buicks and Chevrolets cars running an 80's universal yanky diesel should not stretch the cubans ability to keep it running. I think a Hatt is a good bet as a solid. seaworthy vessel, fast enough to get home in a choppy sea a mid 80's shouldn't devalue too much. I know very little about mobos I am a raggy sailor but I need a boat that I can handle by myself, go fishing if I want to and even stay aboard in 2 for a few weeks or months and do some cruising. I like the 36 Convertible S2 with the twin Detroits, maybe a bit small but it's probably sufficient.

Thanks

Billy
 
Cannot really comment on the MAN and MTU's, but they are generally good engines, although parts, when compared with DD are expensive. The two stroke DD's are normally beefier and heavier than their equivialent 4 strokes which is partly due to the build and components used.

The 8V ... I assume is a 8v/92 series, should be reliable (if not overloaded) in the low 700 hp range and below .... but seem to recall that they did take out a fair bit over 800 out of that block with mixed results in respect of reliability.. The older one, I presume may be a 8V/71, which may be in the upper range of what they should take out of the engine, so may need some attention after a couple of thousand hours ... then again if it is the 12V/71 that one was also rated at that level earlier on, and they would be damn near indestructable... and would be great in a displacement, or semi-displacement, such as the Baglietto's etc... where weight is of minor importance...

The 92 series had some issues with the early engine syncronisation, but were resolved under warranty, so you should be OK now....

Main benefits of the DD's are the interchangable parts, which makes parts very cheap (volume production) .... and that they are easy to maintain.

I've seen both 71 and 92 series running as sweetly as out of the factory after 20,000 hours and still going strong at high 80% load 24/7 .
 
Rememer that this is our figures from our boat with 6/71's ... rated as approx 385 hp (slightly smaller turbo)..

boat is 45 ft and with a 21 tonne displacement .... and it is UK Gallons for both engines...when in tune ...and speed in knots ..... and I fully expect the Cubans to have good knowledge about these lumps ... get a couple of reserve injectors etc., to have onboard before you get there...
 
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