Engine mount bushings

[Larsa]

Gents,
I tried to find a topic around the rear engine mount bushings for engines with common mounting axle with the rear swing. Surprised to not find it, but to avoid a duplicate thread, if the subject has been up before, please advice.

My case has been severely worn on the left side and the bushing is very, very loose .
Right hand side is fixed.

I was trying to choose a good rework option to this problem with extra bushing or so, but thought this just HAD to be a common problem on these soft cases that many have had and solved prior to me?
The bushings are supposed to be fixed I suppose at a certain distance from the case?

 

[ruwfo]

Larsa,
Sounds like you'll need to have a spacer made with a larger OD & have the case drilled to match the size. Mc-Masters Carr sell metric
Drill bushings (spacer) i bought some for my 510 four stroke project.
http://www.mcmaster.com/#standard-metric-drill-bushings/=ftv5yj

Husky John

 

[fran...k.]

It is a common problem, worst on the 85-86, almost as bad on 87-88 and still an issue with the earlier ones. Never seen the issue with an auto and I have tampered with the drive side one on my 510. Can't say about the small 125 or pre 81 stuff.

It has been discussed however I have my doubts that stuff before servers were changed comes up in the search function. I would not remove any material to get it round and install a new bushing rather make a new one and kind of glue it in. From here I have read and last time used some 3m panel bond. Previously I have used other types of vacuum techniques to get a custom made or ordered insert glued in place. I do it one side at a time with the pivot bolt to help the chances of getting the insert straight. All my major issues have been with the two stroke ones from the mono shock. The inside of the insert, the pivot bolt and the sides of the plates of the frame all degrade together in general. I have bought one of the inserts but lately even though it carries on at least until 1999 in the four stroke single cam design it is not available, perhaps the dedicated vingage outlets who don't accept credit cards can help you. If there is a little cracking or tearing I have successfully welded them up but have encountered scarry clink clink type noises when getting into heavy welding on them havn't dared investing the effort to install the parts in those cases. I also don't like the design of the inserts themselves the way they are a little smaller near the flange and the epoxy fills in that void. Old husky chuck who hasn't posted here liked to make those inserts out of bearing bronze or oil lite bronze, I guess the stuff that kind of oozes oil when you machine it. I have used mild steel and hardened them in powder which I don't think I will do again. You can drive them out of those left side cases which crack at the intermediate kick start gear shaft. Or start with the above bushing linked in the prior post I was not aware of. Amazing what you can find in used bikes bondo and sports tape, little weld beads and hammered in come to mind.

Added later
Generally the chain side is worse so it is kind of curious you ask about the left as you state the right is fixed. Any idea how it was fixed? The flanges on those inserts can kind of wear into the case material as to make setting the total width of the rear engine a little touchy without another good engine side by side. Even then once the swingarm and engine are in the frame some shimming might be in order.

Fran

 

[Larsa]

Thanks for the very extensive and explainative (not sure if thats a word) answers, I appreciated it.
I like your thinking Frank with a glued 'molded in' solution.
I took a good look at the bushings and the fit into the engine this evening and it is more severe then I previously thought, or, I am missing a sleeve on the bushing that I am not aware of (first two stroke husky, but many other bikes/cars on the list)

Anyways, now that i look more closely on the right hand side (pic2) this is the position it is fixed in (and fixed so well I did not manage to withraw it without risking a crack unfortunately), so I am leaning towards it beeing fixed by some sorts of 'voodoo-engineering' means as you suggest Frank. They did something and then were unable to get in in completely

Probably heat the rear side quite signifficantly and try to pull the bushing out, or should I try to hammer it in and then with a high chance of cracking it (probably some conical shape to it somehow)

P.S I just had to put a picture of my latest completion that I started today, not a husky and a mere moped, but very sentimental for me this one. Bought it at the age of 13-14 and now many many years later it is completely restored from beeing a wreck

Lars

 

[GaryM]

Anyone making them or make us some ?? I could use maybe 3 pair. with the smaller swing arm shaft size 81- 82 Oh did anyone read the Husky update that the first series of bushings were to tight and husky updated
the size to stop the cases from cracking ?? I just picked up a couple more used cases and both had damages bushings

Thank you,

Gary

 

[Ron]

Definately heat the cases to get them out. Like changing bearings

 

[Larsa]

Ok, I shall heat the cases and try to pull them. Thanks Lars