Dumb question from a neophyte

[p323ms]

Rebuild in place???

Some engines are designed so that they can be rebuilt in place. If the cylinders are removeable it can be done. No personal experience just reading Nigel Calders book on marine diesels. As I understand it my volvo cylinders can be removed. So a rebuild would be to take off the head for reworking and then the cylinders can be removed and repaired or replaced. this would give access to pistons etc. If all else fails take the thing apart to remove it more easily. You can use your main's boom to lift it out of the boat.  An outboard would have it's advantages. Use the same motor for the dinghy and the mothership. I read an article by a guy who motored down the tennessee tombigbee with an outboard. With solar power. Also with the right mount no prop drag under sail. On a smaller boat an inboard makes less sense than an outboard. But over 30' an outboard makes less sense. IMHOTom Tom

 

[Debra B]

pull to rebuild

OK, so your engine needs to be pulled to rebuild. That shouldn't be a problem for someone who knows what they are doing. (2 by 4's - or bigger - and a come-along usually do it.) If your mechanics won't do it, ask around the marina. I bet someone has. 4 bolts hold the engine mounts to the engine, then Yanmars have a lift ring on the top - for just this reason or depending on the purchase you can get, you may leave the mounts on the engine, but taking them off will cut about 4 inches off the width. Yanmar mounts often need replacing and this would be a good time to check.Does it need to be removed from the boat, or can it just be pulled out of the engine compartment to make more space? Nothing beats an inboard. Outboards can have their props out of the water on a rough day. And a new outboard - minus the mount, minus the work to install will be about 2500 to 3000 for 9.9 (checked Defender). What size boat? What size motor?

 

[john]

Plymouth...you live right next door to the largest

yanmar dealer in the area...Mack Boring in Middleboro. I recently removed the entire head and high pressure pump from my yanmar sb8 and delivered it to them. Roger Sherman at MB had the entire top end rebuilt stem to stern with all new parts for about $700. I found him honest and easy to talk to. I was told that most of the small yanmar problems do not involve a total rebuild in that they clock few hours on a sailboat. It us usually the injectors, head gasket, and exhaust elbow that are the culprits.