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Old 11-23-2020, 08:05 PM   #1
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Can you answer this ? Please help me

Im seriously looking to buy a 2005 Mainship 34T , i was told by my mechanic to stick with the 6LYA YANMAR, and not go with the twin 240 ? Can our fine member please guide me as to which is the better choice and why?
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Old 11-23-2020, 08:08 PM   #2
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If your question is single or twin, then the correct choice is the one you make.
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Old 11-23-2020, 08:15 PM   #3
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The twins in that size boat will be harder to access. The single prop in that boat will be better protected - not sure if it has twin rudders with twins, in which case they are also less protected. The get-home/redundancy issue? Dealer's choice. Where do you want to use it and what are the ordinary hazards in that area? Will you be in easy range of a towing service if going with a single?
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Old 11-23-2020, 08:22 PM   #4
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we only travel within the great south bay of long island , might do a block island trip, but other than that we drive 7 miles across the bay and park it at the dock for 3 days of fun .
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Old 11-23-2020, 08:29 PM   #5
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we only travel within the great south bay of long island , might do a block island trip, but other than that we drive 7 miles across the bay and park it at the dock for 3 days of fun .
We use our boat in a similar pattern with very infrequent runs on a hundred miles through the ICW. I find the single engine Yanmar 315 HP sufficient for our 15-MPH cruise. I have been towed once in my over fifty years afloat, when this single engine had a seawater cooling hose blow apart. Previous boat was a twin engine Grand Banks where I felt the twins were essential.
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Old 11-23-2020, 08:35 PM   #6
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I am betting your tech is thinking about serviceability cause it’s his sorry a** that has to crawl around in there. The Yanmar 240’s are bullet proof. The 6LY is also a great power plant and much easier to service in that application. It comes down to what you want....single or twin. I’d go with the single but that’s just me.
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Old 11-23-2020, 08:39 PM   #7
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I just purchased a 2004 34 Pilot in August of this year. I was able to test drive the boat with a single and twins. With twins, the boat was a few mph faster, but seemed to not track as well compared to the single. So far, I have been very impressed with efficiency of the boat with its single yanmar 6lya(we put 45 hours on the boat in 60 days).

My previous boat had twins, and docking the boat with a single is MUCH different as I don't want to rely on using the bow thruster(even though it works REALLY WELL). I do most of my maintenance, and after crawling around taking off and cleaning heat exchangers, changing the impeller, my back is glad we bought the single!!!

Good luck, I don't think you can go wrong either way!
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Old 11-23-2020, 08:49 PM   #8
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This is great information and support I really appreciate all this input.... But I do believe on that statement about how my mechanic is the one that is not looking forward to crawling around with 2 engines.
I just got rid of my 2003 MS 315 yanmar I love that engine !
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Old 11-23-2020, 08:51 PM   #9
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So did you find owning the boat with twins easier with docking
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Old 11-23-2020, 08:54 PM   #10
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IF you buy a boat with twins, I highly recommend getting your mechanic yoga classes, a heating pad and some aleve!

-Rich
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Old 11-23-2020, 09:00 PM   #11
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I like that suggestion....
I prefer the 6LYA
I hope I find it in a 2005 MS 34T
They sell so fast. I just sold my 2003 MS pilot, 315 yanmar perfect boat 1050 hrs.
$65000. 00
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Old 11-23-2020, 09:03 PM   #12
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On the test drive, yes I thought the twins were easier as I could split the throttles while docking. Once I bought the boat, I spent a few hours learning how to maneuver the boat while my wife tinkered with the cabin. On a calm days, I don't need the bow thruster at all to back into my slip. The boat holds its coarse pretty well with its deep keel. I find the bow thruster to be great insurance on windy days though. Whichever boat you decide, you will be happy with it.

-Rich
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Old 11-23-2020, 09:07 PM   #13
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Quote:
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So did you find owning the boat with twins easier with docking
For maneuvering in and around marinas and piers, I prefer twins any day. However, now that I own a single with a bow thruster, I am OK with it.
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Old 11-23-2020, 09:08 PM   #14
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They do sell fast!!! We totally overpaid on our boat and haven't regretted it yet! If you are ever in the Annapolis MD area, we can take our boat for a spin and you can see how she maneuvers.

-Rich
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Old 11-23-2020, 09:12 PM   #15
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Any boat with twins? Not so. Have you ever been aboard a DeFever and seen the easily accessed and large engine room? Or a Great Harbor? Not all boats with twins require being a gymnast.
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IF you buy a boat with twins, I highly recommend getting your mechanic yoga classes, a heating pad and some aleve!

-Rich
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Old 11-23-2020, 09:18 PM   #16
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My apologies, 2004 mainship 34 pilot rumrunner with twins you need to be a contortionist to get to parts of the motors.

I'm sure the boats mentioned have ample space to service both motors, but 2x the amount of potential issues and upkeep!

-Rich
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Old 11-23-2020, 09:35 PM   #17
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For maneuvering in and around marinas and piers, I prefer twins any day. However, now that I own a single with a bow thruster, I am OK with it.
I was hesitant to even consider a single as previous boat had twins. Bottom line I am now sold on single with thruster(s)
The room with a single is very generous and encourages one to do more yourself. It also lend itself to assisting or standing by to learn when you have others do work. If you are nervous not having a back up spend the $ for unlimited towing policy and you will still be ahead vs maintenance of twins.
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Old 11-23-2020, 09:49 PM   #18
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Quote:
Originally Posted by SILENTKNIGHT View Post
I like that suggestion....
I prefer the 6LYA
I hope I find it in a 2005 MS 34T
They sell so fast. I just sold my 2003 MS pilot, 315 yanmar perfect boat 1050 hrs.
$65000. 00
Hardtop? Generator?
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Old 11-25-2020, 07:32 PM   #19
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My last boat had twins and I swore I would never buy a boat with a single. My present 390 has a single and a bow thruster and now I swear I will never buy a boat with twins.
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Old 11-26-2020, 03:41 PM   #20
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We previously had a 38' Regal with win Cummins. What a pain in the butt to try to work on those engines. Getting to the hot water heater was almost impossible.
We have a 2006 MS34T single engine and love it. You can actually crawl around the entire engine and have plenty of space at every location to sit down to perform maintenance, do checks on the system, etc. Just wish the boat would go a little faster.
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