Discussion in 'Found- Engines, Parts, Materials, Electronics etc' started by Blitzen, Dec 8, 2019.
Found on CL: Yanmar Desiel 320 HP 3300 RPM
No price listed , but looks like the 5.2 liter 6LY which is a great mechanical at that hp rating.
Has two oil filters. 440hp ?
I have dealt with Andy before and he is always top notch. Its not a newer listing
Is there a 420 LY or just the 440?
Plenty of bad internet press about the latter, but that seems like a lot of hp for little $.
no cylinder liners ! never heard of a 420 ?
As with many models of diesels different horsepower levels can be achieved within a model. To know for sure get the serial number and contact Mack Boring.
Not to bash on any brand, but this is where some other manufacturers shine. Hp levels are part of the model name for example: Cummins 6BT-210M
I believe most manufacturers are going that way nowadays.
they are good/great engines but they did have issues with over propping on the 440 in the hinckley boats. many of those 440 have thousands of hours on them. i have a mechanic that services my 370 , it has liners, that loves yanmar and even the 440. if they are propped properly and used he says they are great. not used , low hours, condensation accumulates and rust occurs weakening vital parts. hope this helps someone .
I just remember the model number being something like 6ly-2a. The "2a" designating the model with the cylinder coating and all the problems experienced by hinckley jet boats. I agree that underpropping would solve the issues most likely, but it is a used engine and previous service is most likely unknown.
Good companies still introducing marketing BS such as the Cummins 330 Diamond, 315hp. old news, yes.
I like it when people talk badly about Yanmars.
Keeps prices down for my projects!
The CL photos of this engine and the location are the same as those in a current eBay auction for a 440 6LY-STP, so that's most likely what it is.
I have never had my hands on what you have but I have seen plenty of 6LYs. Most of them low annual hour applications. Great motors in my opinion if taken care of. The oil filter and fuel filter placement and construction makes my slap my forehead but in the big picture not that big of a deal. I have seen much worse.
same blocks, 350, 370, 440. 350 and 370 have cylinder sleeves, 440 does not. 440 valves had some issues but proper propping , use and yes maintenance are important. horizontal oil filter terrible.
When I saw/serviced the new common rail version a few years ago that was my first comment. “Why did they keep those oil filters there?”. Other than that (and really not that big of a deal) the newer common rail version is a great motor. I know of one member on here that has one.