I'd like to replace the 1979 Yanmar YSM8 with a new engine. My local engine shop says that a new Yanmar 1GM10 will not fit. Have you been succesful with a repower? Which engine did you use? Thanks I found a reference to a repowered 27 using a Beta Marine Beta 10 (Kubota) but the original engine mounted was an Atomic 2. The Beta 10 seems to mount on the Atomic 2 bolts. I'm not sure that my Yanmar bed can accomodate a Beta 10.
Which repower for an ODay 27
- Thread starter filincdm
- Start date
- Status
Atomic 4 is vertical > 19.09 in"?
Hmmm, the 1GM10 is a vertical cylinder as is your Atomic 4. The old YSM8 is horizontal. I'll look up the specs for an Atomic 4. If it's as tall as a 1GM10 then either should fit. Thanks for the idea.
Hmmm, the 1GM10 is a vertical cylinder as is your Atomic 4. The old YSM8 is horizontal. I'll look up the specs for an Atomic 4. If it's as tall as a 1GM10 then either should fit. Thanks for the idea.
If you're going through the expense of re-powering
...why re-power with an old technology, heavy, gas engine? A new Diesel will both lighten the load and enhance value. My recent repower on my Nonsuch 30 resulted in: OLD: Volvo MD11C W/Saildrive (1979) 2-Cyl/23hp 545 lbs Fuel = Diesel Fuel cons 1.25 GPH (approx) Cold Start = Compression release NEW: Volvo MD2030 W/Saildrive (2004) 3-Cyl/30hp 340 lbs Fuel = Diesel Fuel cons 0.50 GPH (approx) Cold Start = Glow plugs A 205 pound weight difference and a huge reduction in fuel consumption. Additionally, a much quieter and smoother running 3-cylinder as opposed to a noisy, bone-rattling 2-cylinder. And, as an added bonus, the new engine takes up roughly half the space making the engine compartment much easier to work in. Now factor in insurance savings for Diesel v. gas. Just my eversohumble opinion. Cheers, Bob
...why re-power with an old technology, heavy, gas engine? A new Diesel will both lighten the load and enhance value. My recent repower on my Nonsuch 30 resulted in: OLD: Volvo MD11C W/Saildrive (1979) 2-Cyl/23hp 545 lbs Fuel = Diesel Fuel cons 1.25 GPH (approx) Cold Start = Compression release NEW: Volvo MD2030 W/Saildrive (2004) 3-Cyl/30hp 340 lbs Fuel = Diesel Fuel cons 0.50 GPH (approx) Cold Start = Glow plugs A 205 pound weight difference and a huge reduction in fuel consumption. Additionally, a much quieter and smoother running 3-cylinder as opposed to a noisy, bone-rattling 2-cylinder. And, as an added bonus, the new engine takes up roughly half the space making the engine compartment much easier to work in. Now factor in insurance savings for Diesel v. gas. Just my eversohumble opinion. Cheers, Bob
Repower
I WILL BE REPOWERING MY 1980 O'DAY WITH A 13.5 KUBOTA-BETA. I realize it is costly. But what is the alternative?
I WILL BE REPOWERING MY 1980 O'DAY WITH A 13.5 KUBOTA-BETA. I realize it is costly. But what is the alternative?
Hey Bob from Niantic...
That's a very good move. Your options would be to: a. make expensive repairs on an already worn out motor b. go through the hassle of removing the dead inboard, sealing the shaft-log, and hanging an expensive outboard on the stern and lowering your boat's value. Additionally, you'll have to explain to any future owner why you did all this The benefit is that when you yank out the old, you can re-wire the boat with no engine in the way. You can also do a good scrubdown in the engine compartment. That's what I did while waiting for my new engine to arrive. The hull had passed the survey, but the engine had crapped out when the surveyor went to take it out on sea trials (lucky me!). The seller ordered a new engine and saildrive to re-power it for me in order to make the deal. I took the opportunity to rewire the entire boat, organize the engine compartment (electrical on the starboard, plumbing on the port side), scoured the engine compartment, bilge, and the entre area under the cockpit. After all was finished I essentially had a brand new boat. Oh...and NOTHING beats the feeling of accomplishment and satisfaction. Anyone on this forum who has ever been on my last boat, a 272LE, will tell you how picky I am about the way things are done. The link below is to my old website for my 272LE. I did all the mods and installs myself. Best of luck to you in whatever your decision! Let us all know how it works out. BTW...I bought my Nonsuch right down the street from you at Eastland Yachts at Brewer's Dauntless in Essex; what a beautiful area! Cheers, Bob
That's a very good move. Your options would be to: a. make expensive repairs on an already worn out motor b. go through the hassle of removing the dead inboard, sealing the shaft-log, and hanging an expensive outboard on the stern and lowering your boat's value. Additionally, you'll have to explain to any future owner why you did all this The benefit is that when you yank out the old, you can re-wire the boat with no engine in the way. You can also do a good scrubdown in the engine compartment. That's what I did while waiting for my new engine to arrive. The hull had passed the survey, but the engine had crapped out when the surveyor went to take it out on sea trials (lucky me!). The seller ordered a new engine and saildrive to re-power it for me in order to make the deal. I took the opportunity to rewire the entire boat, organize the engine compartment (electrical on the starboard, plumbing on the port side), scoured the engine compartment, bilge, and the entre area under the cockpit. After all was finished I essentially had a brand new boat. Oh...and NOTHING beats the feeling of accomplishment and satisfaction. Anyone on this forum who has ever been on my last boat, a 272LE, will tell you how picky I am about the way things are done. The link below is to my old website for my 272LE. I did all the mods and installs myself. Best of luck to you in whatever your decision! Let us all know how it works out. BTW...I bought my Nonsuch right down the street from you at Eastland Yachts at Brewer's Dauntless in Essex; what a beautiful area! Cheers, Bob
- Status