Yanmar Engine Mounts

[r.furborough]

Here is another alternative PYI Inc. Max-Prop PSS Shaft Seal Seaview Radar Mounts R&D I cannot endorse them as I have not tried them, but R&D make a good product and it may be a good alternative.

[Tropic Cat]

Originally Posted by MoonlightSailor

I recently had work done on my 4JHTE and the motor mounts will need to be changed soon. The mechanic stated that all 4 of the mounts ARE NOT the same size (port vs starboard). The reason he said was because of the torque of the engine displacing more force to one side than the other. Is this reasoning correct?

No. The harder rubber mounts go on the front of the yanmar diesel, the softer ones on the rear. In my case it was D50 rear and D70 forward.

I had actually reasoned the opposite. It wasn't until I located the Yanmar installation manual did I discover my error. I took the engine out a 2nd time and swapped the mounts.

It's a boat (sigh) .......

[rpeebles]

2GM20F

Seeking Yanmar engine mounts YD-4096 #100.

Are these Yanmar engine mounts obsolete? If so, what replaces?

Thanks, Roger

[delmarrey]

Originally Posted by Tropic Cat

No. The harder rubber mounts go on the front of the yanmar diesel, the softer ones on the rear. In my case it was D50 rear and D70 forward.

I had actually reasoned the opposite. It wasn't until I located the Yanmar installation manual did I discover my error. I took the engine out a 2nd time and swapped the mounts.

It's a boat (sigh) .......

When I bought my 3JH4E the heavier (150) were on the port side with the lighter (100) on the stbd side. In some manuals it also recommends changing out mounts every 1000 hours.

[never monday]

Originally Posted by rpeebles

2GM20F

Seeking Yanmar engine mounts YD-4096 #100.

Are these Yanmar engine mounts obsolete? If so, what replaces?

Thanks, Roger

not obsolete

[rpeebles]

Good, where can I find them?

[delmarrey]

Originally Posted by rpeebles

Good, where can I find them?

Where are you located? Yanmar has territorial reps.

[rpeebles]

Texas thanks!

[Morgan3820]

Get R&D mounts. They have same sized replacements for yanmar mounts and are much better mounts for the same or less money

[rover88]

I just replaced my mounts for my 3JH with the R&D. They are much beefier than the OEM and at cruising speed I can really tell the difference. They aligned nicely and so far I'm very pleased. They were $114 at Port Supply, but had to be ordered and I have to pay the shipping.

[delmarrey]

Quote:
Originally Posted by Tropic Cat
No. The harder rubber mounts go on the front of the yanmar diesel, the softer ones on the rear. In my case it was D50 rear and D70 forward.

I had actually reasoned the opposite. It wasn't until I located the Yanmar installation manual did I discover my error. I took the engine out a 2nd time and swapped the mounts.

It's a boat (sigh) .......
When I bought my 3JH4E the heavier (150) were on the port side with the lighter (100) on the stbd side. In some manuals it also recommends changing out mounts every 1000 hours.

I do see from this chart http://www.pyiinc.com/images/pdf/rd/...R%20YANMAR.pdf that some Yanmars do use different mounts in front/rear vs P/S.

Also this chart shows the interchange part #'s for the R & D mounts from Yanmar.

Also, here is the list of Yanmar dealers in TX. > Yanmar - Distributor or dealer

[rpeebles]

My original mount centers are about 6.75".

No replacements I have seen are this size. What gives? Do I have to get some kind of adapter fabricated?

[Sailmonkey]

Originally Posted by rpeebles

My original mount centers are about 6.75".

No replacements I have seen are this size. What gives? Do I have to get some kind of adapter fabricated?

We don't have a yanmar but changed to these mounts (without the yanmar adapter). I've found that being stiffer than the originals the initally transfer more vibration to the hull, but once motoring at normal cruising speed the whole mess was quieter than before. I attribute this the less engine movement keeping things lined up better, but what do I know

http://www.pyiinc.com/images/pdf/rd/...R%20YANMAR.pdf

[rpeebles]

To clarify...this is an original yanmar engine mount for a 2GM20F attached to a KM3V v-drive transmission. This mount attaches to brackets that attach to the v-drive case. All the new mounts that I have found have a 4 inch mounting hole spacing. These original mounts have a 6.75 inch spacing.

The boat is a 1988 33' CKY cat ketch. Thanks again!

[never monday]

Originally Posted by rpeebles

To clarify...this is an original yanmar engine mount for a 2GM20F attached to a KM3V v-drive transmission. This mount attaches to brackets that attach to the v-drive case. All the new mounts that I have found have a 4 inch mounting hole spacing. These original mounts have a 6.75 inch spacing.

The boat is a 1988 33' CKY cat ketch. Thanks again!

the pictured mounts are standard issue mounts for a 2/3 GM, YM series engine. The smaller mount you are finding is for a 1GM