Short Diesels?
Short Diesels?
(OP)
I'm working for an engine dealer in New Orleans. We are trying to supply repower for a few smallish crew boats, and have run into a problem with two of them. The boats are aluminum, ~33 ft x 12 ft, and weigh ~10,000 lb.
The old engines were 8V-53s, which I'm guessing were rated a little above 200HP. Two per boat.
We've got inline sixes that are powerful enough, but they're too long to fit, by a cylinder or two. We've got turbo fours that will fit in the hole, but I don't think they're strong enough to get the boat up out of the water.
Scania makes an inline five that might fit; I'll check that next week.
Any other candidates come to mind?
The old engines were 8V-53s, which I'm guessing were rated a little above 200HP. Two per boat.
We've got inline sixes that are powerful enough, but they're too long to fit, by a cylinder or two. We've got turbo fours that will fit in the hole, but I don't think they're strong enough to get the boat up out of the water.
Scania makes an inline five that might fit; I'll check that next week.
Any other candidates come to mind?
Mike Halloran
Pembroke Pines, FL, USA





RE: Short Diesels?
Mike Halloran
Pembroke Pines, FL, USA
RE: Short Diesels?
Keith Cress
kcress - http://www.flaminsystems.com
RE: Short Diesels?
RE: Short Diesels?
There seems to be a 'hole' in the market. Nobody that I have found is making new ~8 liter Diesels in a V configuration... but a fair number of boats are coming up for repower that originally had 6V or 8V engines, and were essentially built around the engine, so six in a row won't go in.
Mike Halloran
Pembroke Pines, FL, USA
RE: Short Diesels?
RE: Short Diesels?
Mike,
Why not stay with the 8V-53's. There are stil many engine shops that can supply you with a rebuild unit and spares. They are indestructible those Detroit engines.
Offshore Engineering&Design
RE: Short Diesels?
Keith Cress
kcress - http://www.flaminsystems.com
RE: Short Diesels?
I was involved in the replacement of some Cat 453's with the Nissan. This was done to get more power in the same foot print. As I recall there was a about a 60 Hp gain in the same foot print. The engines were for some shrimp boats for service in the Caribbean. This is considered very hard duty on any engine. Two boats returned to the states after about 5 years with both engines in good shape. One had to under go a short overhaul because of a busted ring.
The Nissan in this service gave very good service without tender loving care.
There used to be ET member that had a nice website all about marine power.
RE: Short Diesels?
The 8V-53s may have been recycled already, or cut up; I don't know what happened to them.
Mike Halloran
Pembroke Pines, FL, USA
RE: Short Diesels?
Try this link for more info,
http://w
Hope that helps
RE: Short Diesels?
htt
RE: Short Diesels?
RE: Short Diesels?
RE: Short Diesels?
The Deere 8.1l six doesn't fit, by about a cylinder.
Mike Halloran
Pembroke Pines, FL, USA
RE: Short Diesels?
RE: Short Diesels?
Mike Halloran
Pembroke Pines, FL, USA
RE: Short Diesels?
Mike Halloran
Pembroke Pines, FL, USA
RE: Short Diesels?
http://www.steyr-motors.com/products/products.htm
RE: Short Diesels?
I'll look at them in more detail.
Mike Halloran
Pembroke Pines, FL, USA
RE: Short Diesels?
OK. My first try was way out of size. But Volvo Penta?
Nearing something sensible?
http://vp
RE: Short Diesels?
The Volvo D4 four would fit, but I think we need a bit more power.
A lot of 'recreational' engines nominally have enough power, e.g. ~250HP, but for this customer, we need the 'commercial' rating, i.e., good for 100 percent power, 100 percent of the time, forever.
Oh. I almost forgot. How ungracious of me. Thanks all, for all the help.
Mike Halloran
Pembroke Pines, FL, USA
RE: Short Diesels?
Good luck in the repower.
RE: Short Diesels?
That someone was somewhat less than perfectly accurate.
The forward engineroom bulkheads are in different locations in two boats.
Mike Halloran
Pembroke Pines, FL, USA
RE: Short Diesels?
The customer was scared off by the Steyr's high rpm... which of course gives it adequate power in a small displacement and a small envelope.
My estimates say the 230HP Steyr would max out at 25kt (@ 4200rpm) and cruise at 20kt @ 3700rpm. So we quoted a 135HP Deere that will max out at 18kt @ 2600rpm, and cruise around 16kt.
Which wouldn't be a problem if the customer didn't already have two similar boats with Deere 8.1l sixes that make 26 and 28 kts. They will always perceive the newer boats as slow pigs, and it will be the engine dealer's fault.
Mike Halloran
Pembroke Pines, FL, USA