Engine mount replacement

[MyFirstNameIsPaul]

Seems like I recall on either the Yahoo! group or maybe even the old mailing list someone replacing the engine (rubber) mounts and claiming that it did a lot to make the bike smoother.  I'm guessing that either the rubber broke down over time or over long miles, but it seemed like it made sense.

It 'seems' like my bike isn't quite as smooth as it was when I got it 40,000+ miles ago.

Has anyone on here done this?  Was it worth it?

[Yamifj1200]

You dont need to replace the motor mounts, you can take the inner sleeve out of the mount clean it up and apply some grease to keep it from rusting in place. Bob Nemac did a good job explaining how to do the work..
http://groups.yahoo.com/group/yamahafj/photos/album/2071221243/pic/list

It does make a differance....

Eric M

[Bob]

http://groups.yahoo.com/group/yamahafj/photos/album/2071221243/pic/list

I just uploaded the diagram and a picture, but Eric beat me to it with the Yahoo link... (y'all are quick).

The difference for me was dramatic.  If your engine mounts are seized, removing and cleaning them will make your FJ feel like a new bike. 
Was '89 the first year the FJ had rubber engine mounts?

[MyFirstNameIsPaul]

Thanks, guys.  I've just got the bike torn apart for a bunch of other maintenance that I'm doing and I'm looking at what I need to do here.

Is it necessary to support the engine from underneath while doing this?  Or can I do one mount at a time?  Of all the things I've done to my bikes over the years, I've never taken an engine out or worked on its mounts or anything like that.

[Bob]

There is a third centre engine mount somewhere down there (very hard to reach, according to the doc), so technically you don't have to support the engine.  I'm paranoid, so I did.  But I worked on a friend's '93 without supporting the engine with no problems.

There is a long spacer that fits between the two front rubber engine mounts that you have to remove, so you may as well do both at the same time.

[pdxfj]

If memory serves me the fully rubber mounted engines started in '91?  So 84-90 the engines were a stressed member of the frame.

From what I remember reading the lower engine mounts at the back of the engine are the most difficult to get to and work with but the payoff for servicing them is worth the effort.  They are the most subject to water, etc.  People who have the fully rubber mounted engines noticed a huge difference when they serviced them.

[Coronet]

 I have a 93 FJ and was getting some major buzzing thru the bars below 3800 rpm, it was bad. Did some research and found the link about servicing the front motor mounts. I made a puller and and pulled the sleeves out of the mounts (came out VERY hard) cleaned them up and regreased them and put everything back together. Made a HUGE difference bike is electric smooth now. On the 93 you don't need to support the motor while doing this.

Anyways, just my 2 cents worth.  : )

Mark

[Stainesy]

Resurrecting an old thread but I concur with the comments made and can testify to the massive reduction of vibration in 91+ model FJ's. Regreasing front engine mounts should be a regular maintenance item.

[skymasteres]

You know all of this talk about the lucky 91+ owners and their swanky rubber mounts makes me think about the mount project that Randy is working on for the earlier years...
Any word on that?

[movenon]

 

[racerrad8]

You know all of this talk about the lucky 91+ owners and their swanky rubber mounts makes me think about the mount project that Randy is working on for the earlier years...
Any word on that?

Yes, as I was working on my bike for the ride last Sunday, I noticed a failure of the front left upper mount. I can see the urethane has split. I have not looked into it any further as I was never really happy with the vibrations I still experienced.

I will be checking with the other test subjects about their experiences and if they are seeing any failures.

There might be a reason that upper mount is aluminum...

Randy - RPM

[fj11.5]

Is it possible to use an original right hand side mount on the left, as I have spares 

[baldy3853]

Seems like I recall on either the Yahoo! group or maybe even the old mailing list someone replacing the engine (rubber) mounts and claiming that it did a lot to make the bike smoother.  I'm guessing that either the rubber broke down over time or over long miles, but it seemed like it made sense.

It 'seems' like my bike isn't quite as smooth as it was when I got it 40,000+ miles ago.


When I had my 93 in about  04 I was experimenting with nolethene bushes ( use in 4x4 suspension) as the sleeves were very badly scoured. We replaced  all of the spacerers including the rear ones but it didn't decrease the vibration. Just using them in the front was ok but if u have access to a machine shop I would get them done in metal  as it  seems to perform much better!
Baldy
Has anyone on here done this?  Was it worth it?

[X-Ray]

I've got to say after our recent "Manshed" therapy day, I was ecstatic. Special thanks to  ^^Doug^^ for showing me and the others exactly how to look after these mounts. My poor old ones had been neglected for the 16 years I've owned my baby, and the ride home was Mmmmmmmmmmmmmmm   

[baldy3853]

Guys the next time we do this we will have a look at the rear mounts they are a little more difficult to do may only be able to do 1 or 2 bikes also if we do this in the right place may do the nipples in the front and rear just to make it easier to maintain!!
Baldy