Ok, so after a buildup of vibration I decided to replace the engine mounts. I got the exact same mounts as were on to begin with...so I would avoid any shimming that might have been necessary when it came to aligning the engine. Well, the new mounts are not compressed (since they're new) and the engine sits about 3/4" too high. Can't even consider aligning. The mechanic is suggesting grinding/planing down the engine beds, re-glassing and then installing the front mounts (the problem area). In effect, creating a step in the engine beds. This sounds crazy to me, but what can i do. Any suggestions...please..
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Wrong mounts
Obviously the mounts are not the same as the old ones since the old ones were new at some point and were installed in your boat. I would look into bying lower mounts and definately not modify the engine beds. Since you have the old ones out, take them to a shop and ask for the same dimensions.
Obviously the mounts are not the same as the old ones since the old ones were new at some point and were installed in your boat. I would look into bying lower mounts and definately not modify the engine beds. Since you have the old ones out, take them to a shop and ask for the same dimensions.
thanks but...
they are identical. It seems that a PO installed older..somewhat sunken mounts. Anybody happen to know of super low mounts?
they are identical. It seems that a PO installed older..somewhat sunken mounts. Anybody happen to know of super low mounts?
Vetus Engine Mounts
My wife says, buy Vetus Mounts (www.vetus.com) - we replaced a set on an older 34 sloop with a 4 cylinder Perkins and they were incredible (no vibration ever after),
My wife says, buy Vetus Mounts (www.vetus.com) - we replaced a set on an older 34 sloop with a 4 cylinder Perkins and they were incredible (no vibration ever after),
Mounts not problem
Something else is going on here...first, the alignment of the shaft corresponds directly with the alignment of the engine, so someone at sometime had to have made some serious changes if the engine is lining up with the shaft with the old mounts, but not the new, as you say, "identical," replacements. Believe me, I have done a few engine refits in my life and shafts are fixed angles; the engine aligns with the shaft and not the other way around. Something is going on with your boat that is being missed by the "identical" replacement mounts. I'll stipulate you have the absolutely correct replacement mounts, but something has been changed in the past you may not be familiar with. A word to the wise. If your mechanic's answer to this problem is to rebed your engine, get another mechanic. This is not a simple or inexpensive procedure and it may not cure your problem while at the same time creating new ones.
Something else is going on here...first, the alignment of the shaft corresponds directly with the alignment of the engine, so someone at sometime had to have made some serious changes if the engine is lining up with the shaft with the old mounts, but not the new, as you say, "identical," replacements. Believe me, I have done a few engine refits in my life and shafts are fixed angles; the engine aligns with the shaft and not the other way around. Something is going on with your boat that is being missed by the "identical" replacement mounts. I'll stipulate you have the absolutely correct replacement mounts, but something has been changed in the past you may not be familiar with. A word to the wise. If your mechanic's answer to this problem is to rebed your engine, get another mechanic. This is not a simple or inexpensive procedure and it may not cure your problem while at the same time creating new ones.
Yanmar 3GM30 Takes Different Mounts
The Yanmar 3GM30 takes different mounts for and aft although they have the same dimensions and look the same. There is a hard to see number molded in the side of the neoprene that distinguishes them apart. Perhaps there is a problem with the "size" (loading design) of the engine mounts. What engine do you have?
The Yanmar 3GM30 takes different mounts for and aft although they have the same dimensions and look the same. There is a hard to see number molded in the side of the neoprene that distinguishes them apart. Perhaps there is a problem with the "size" (loading design) of the engine mounts. What engine do you have?
engine
The engine is a 10hp bukh (lucky me), and was a refit in mid 80's. The previous setup was with Bukh mounts aft, and Bushing DF100 mounts forward...and the new replacements are the same. I agree that screwing with the engine beds is absolutely wrong. I just can't figure out what to do? But I appreciate everyone's agreement that touching the beds is not the way to go.
The engine is a 10hp bukh (lucky me), and was a refit in mid 80's. The previous setup was with Bukh mounts aft, and Bushing DF100 mounts forward...and the new replacements are the same. I agree that screwing with the engine beds is absolutely wrong. I just can't figure out what to do? But I appreciate everyone's agreement that touching the beds is not the way to go.
Tend to Agree with Lee
Like Lee said, if they're the same motor mounts they should fit. There's got to be a problem somewhere. Does the engine have bolt-on brackets between the motor mounts and the side of the engine? Could it be that the brackets have more than one set of holes that they can be bolted on with? Say, one set higher than the other?
Like Lee said, if they're the same motor mounts they should fit. There's got to be a problem somewhere. Does the engine have bolt-on brackets between the motor mounts and the side of the engine? Could it be that the brackets have more than one set of holes that they can be bolted on with? Say, one set higher than the other?
thanks
I'll check the brackets next time i'm at the boat. Hopefully there is some sort of adjustment, but I'm not betting on it. In the mean time..I'm not sailing, which sucks.
I'll check the brackets next time i'm at the boat. Hopefully there is some sort of adjustment, but I'm not betting on it. In the mean time..I'm not sailing, which sucks.
Confused?
I do not understand the situation. You have said you have compared the two and they are "identical," but then you say one is compressed more. If it is compressed wouldn't this make it ahorter and hence "not identical." If one is shorter then you must have received the wrong part. Don't let the box confuse the issue, I have received parts in the wrong box before.
I do not understand the situation. You have said you have compared the two and they are "identical," but then you say one is compressed more. If it is compressed wouldn't this make it ahorter and hence "not identical." If one is shorter then you must have received the wrong part. Don't let the box confuse the issue, I have received parts in the wrong box before.
Bukh engines
Well, I think I'm somewhat uniquely qualified to comment on this because I'm the only person on Clear Lake, Texas, (aka Galveston Bay) that broke with conventional wisdom and installed a Bukh D24me engine in my boat last summer and it's performing terrifically. You need to call Bob Kahak at Alexander/Ryan Marine & Safety Co., in Houston, at (713) 923-1671, 8-5 M-F, and tell him what is going on. These guys service, overhaul and repair commercial lifeboats for a living and most of their line uses Bukh engines. These guys -- and Kahak -- really, really know what they are doing and the repower in my boat...a 78h30...went strictly according to plan, according to budget, on time and without any re-engineering of the engine spaces. Also, you can talk to Casey Bergin at Mockingbird Marine in Seabrook, Texas, (281) 326-2250, who did the installation and did a spectacularly professional job, again, on budget and on time. These guys will be able to give you affirmative, immediate answers to your questions.
Well, I think I'm somewhat uniquely qualified to comment on this because I'm the only person on Clear Lake, Texas, (aka Galveston Bay) that broke with conventional wisdom and installed a Bukh D24me engine in my boat last summer and it's performing terrifically. You need to call Bob Kahak at Alexander/Ryan Marine & Safety Co., in Houston, at (713) 923-1671, 8-5 M-F, and tell him what is going on. These guys service, overhaul and repair commercial lifeboats for a living and most of their line uses Bukh engines. These guys -- and Kahak -- really, really know what they are doing and the repower in my boat...a 78h30...went strictly according to plan, according to budget, on time and without any re-engineering of the engine spaces. Also, you can talk to Casey Bergin at Mockingbird Marine in Seabrook, Texas, (281) 326-2250, who did the installation and did a spectacularly professional job, again, on budget and on time. These guys will be able to give you affirmative, immediate answers to your questions.
Another Bukh comment
And, yes, definitely "lucky you," if you have a Bukh! I spent a full year researching all the different permutations of repowering the boat and looked at 2GM's, 3GM's, new, used, even a retro-retrofit of an Atomic 4 since I know that engine extremely well and unlike some am not afraid of gasoline in a well-maintained boat with a well-maintained fuel system and it was Kahak & Co., who contacted me and began the education process that led me to tossing out the Yanmar Chronicles and going not with Japan (and Toyota, by the way, which builds Yanmars, admittedly a good engine) but with Denmark instead. Bukhs are clean-sheet-of-paper marine engines which were built for the commercial boat business and are more robust in every way compared to the Yanmars. They were never land-vehicle engines that have been marinized. They were designed and built for one of the harshest jobs in one of the world's toughest environments. Believe it or not, you really do have a great engine in that boat.
And, yes, definitely "lucky you," if you have a Bukh! I spent a full year researching all the different permutations of repowering the boat and looked at 2GM's, 3GM's, new, used, even a retro-retrofit of an Atomic 4 since I know that engine extremely well and unlike some am not afraid of gasoline in a well-maintained boat with a well-maintained fuel system and it was Kahak & Co., who contacted me and began the education process that led me to tossing out the Yanmar Chronicles and going not with Japan (and Toyota, by the way, which builds Yanmars, admittedly a good engine) but with Denmark instead. Bukhs are clean-sheet-of-paper marine engines which were built for the commercial boat business and are more robust in every way compared to the Yanmars. They were never land-vehicle engines that have been marinized. They were designed and built for one of the harshest jobs in one of the world's toughest environments. Believe it or not, you really do have a great engine in that boat.
Bukh
Bob, Thanks for the contact. I'll try to place a call today. Hopefully this will get it all settled. I actually like the bukh, the only problem on the west coast is that it is not common and all the contacts and parts are back east. You could happily run this little bukh at full throttle all the time, and she would be quite happy with that, because it was built for it.
Bob, Thanks for the contact. I'll try to place a call today. Hopefully this will get it all settled. I actually like the bukh, the only problem on the west coast is that it is not common and all the contacts and parts are back east. You could happily run this little bukh at full throttle all the time, and she would be quite happy with that, because it was built for it.
Alexander/Ryan Web Site
Peter - did some checking about what Bob Howie had to say and came up with Alexander/Ryan's web site. http://www.alexanderryan.com/ They also have an old fashioned 800 number but I don't know if it works from Canada: Or Toll Free: 1(800)-923-1672 Their New Orleans office is also listed here. I couldn't find an E-mail address listed except for the webmaster who is asking for comments about his website. I suppose one could send a comment that they should have an E-mail address to someone in the sales or technical department. "Send mail to webmaster@alexanderryan.com with questions or comments about this web site." By the way, their lifeboats look like the ones I've seen the Canadian Navy use. Couldn't find engines - looks like much of their web site is "under construction".
Peter - did some checking about what Bob Howie had to say and came up with Alexander/Ryan's web site. http://www.alexanderryan.com/ They also have an old fashioned 800 number but I don't know if it works from Canada: Or Toll Free: 1(800)-923-1672 Their New Orleans office is also listed here. I couldn't find an E-mail address listed except for the webmaster who is asking for comments about his website. I suppose one could send a comment that they should have an E-mail address to someone in the sales or technical department. "Send mail to webmaster@alexanderryan.com with questions or comments about this web site." By the way, their lifeboats look like the ones I've seen the Canadian Navy use. Couldn't find engines - looks like much of their web site is "under construction".
Bob Kahak & Bukh e-mail
How remiss of me not to send Bob Kahak's email address! Geez! What was I thinking? It's bobk@alexanderryan.com. Oh, and it's pronouced Kay-hack. As for running the Bukh at full power all the time, yes, you can. I've talked to the guys in Denmark and they say the engine is rated to run at max rpm for as long as you can supply it with fuel. And, in the lifeboats they don't install engine mounts! They hard-bolt the engine right to the bed and even then, you can't believe the overall lack of vibration. The engine is counterbalanced internally to help reduce the vibration. The reason they hard-bolt it to the lifeboat beds is because they consider the engine mounts to be a maintenance item!!!!! I used the flexible mounts, however, in my installation! Also, the guys in Denmark tell me the engine really doesn't fully break in until about -- get this -- 2,000 HOURS!!! I wonder if I will be even ALIVE when the engine hits 2,000 hours!!! The guys here in Houston -- which, by the way, is the home office for A/R since John Ryan Sr., bought out the Alexanders and Ryan is from Houston and a helluva nice guy -- really know their stuff about these motors and you aren't gonna find a more knowledgeable, friendly, helpful bunch any place on the planet. You cannot begin to believe the interest they have taken in me and my project and I'm the first "toy boat", as they like to put it, that they've done here in Houston, so they were pretty anxious to see how the project has turned out. I'm am absolutely sold on the Bukh engine. In all the year's I've been running engines, it's really one of the best I've ever come across. I can pretty much tell you that if you hook up with Kahak and A/R, you're questions as well as your parts supply problems are going to be answered!!
How remiss of me not to send Bob Kahak's email address! Geez! What was I thinking? It's bobk@alexanderryan.com. Oh, and it's pronouced Kay-hack. As for running the Bukh at full power all the time, yes, you can. I've talked to the guys in Denmark and they say the engine is rated to run at max rpm for as long as you can supply it with fuel. And, in the lifeboats they don't install engine mounts! They hard-bolt the engine right to the bed and even then, you can't believe the overall lack of vibration. The engine is counterbalanced internally to help reduce the vibration. The reason they hard-bolt it to the lifeboat beds is because they consider the engine mounts to be a maintenance item!!!!! I used the flexible mounts, however, in my installation! Also, the guys in Denmark tell me the engine really doesn't fully break in until about -- get this -- 2,000 HOURS!!! I wonder if I will be even ALIVE when the engine hits 2,000 hours!!! The guys here in Houston -- which, by the way, is the home office for A/R since John Ryan Sr., bought out the Alexanders and Ryan is from Houston and a helluva nice guy -- really know their stuff about these motors and you aren't gonna find a more knowledgeable, friendly, helpful bunch any place on the planet. You cannot begin to believe the interest they have taken in me and my project and I'm the first "toy boat", as they like to put it, that they've done here in Houston, so they were pretty anxious to see how the project has turned out. I'm am absolutely sold on the Bukh engine. In all the year's I've been running engines, it's really one of the best I've ever come across. I can pretty much tell you that if you hook up with Kahak and A/R, you're questions as well as your parts supply problems are going to be answered!!
Bob Kahak
I e-mailed Bob Kahak this morning (thanks very much for his e-mail address, it's often easier to describe the situation in writing). Bob replied within the hour (that's great service given that he'll never actually work on my boat) and will be chatting with the factory for more input to see what can/should be done. I greatly appreciate everyone's help and comments.
I e-mailed Bob Kahak this morning (thanks very much for his e-mail address, it's often easier to describe the situation in writing). Bob replied within the hour (that's great service given that he'll never actually work on my boat) and will be chatting with the factory for more input to see what can/should be done. I greatly appreciate everyone's help and comments.
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