125 to rebuild

[RUF]

I am working around a 125 engine to rebuild it and I found some bad surprises.
I guess water came into it and for a long time.
This is what I found.
I am wondering to use some epoxy but am worried about that. Never used on heating places.
Have you guys any advice please?
Thanks
G.

 

[ronn450]

Get another set of case's that match .

 

[Motosportz]

I think you would be money, time and frustrations ahead by finding a different motor / cases to start with.

 

[RUF]

Thanks. I will do that.

 

[pvduke]

cant tell from the pic but if its just calcium and shmutz? i've popped out the bearing, plugged the race with a rubber hose, masked it well and walnut hull blasted it clean. forgot what paint i used on the outside of the case been forever since ive done one. main thing is if the bosses, seal surfaces and races are pitt free and the webbing is not corroded and pitted ive reused them when the client wanted to keep the oem engine.

 

[ronn450]

Make sure that when you buy case's also use matching one's as they seal better alway's buy them by the pair when you can .

 

[RUF]

there is a small hole in the lower part of one side and I thought to weld it using epoxy....I have no experience with epoxy in a heathed place...

 

[visiteur1948]

yor cases is dead !
(magnésium and H2o )
change !

 

[2premo]

if looking for donor engine cases 2040 is the critical number, here is a list of engine numbers from Husky Club
http://www.huskyclub.com/model.htm
since I am not really familiar with 125's maybe someone will chime in as to other years cases that might work

 

[dukkman]

I have fixed one exactly the same as that.
Sandblast and paint the area then pencil grind the hole both sides so that the DEVCON cannot fall out.
Devcon it.
Then file face flat and tidy up.
Working ok so far.

 

[RUF]

Thanks dukkman !!
Which kind of DEVCON did you use please?

 

[dukkman]

Sorry RUF have done the big search of my shed and can't find it.
Must have used it up and chucked the empty's.
My 400 looked just like that and as I said I fixed it and have done over 1000k's so far with no probs.

Any epoxy that's fuel proof will do I think.

 

[RUF]

Thanks alot. I was ready to try to fix it and now I am more than happy to know that works.
Ruf

 

[suprize]

i used araldite and fibre fill on the water pump housing on the 400 with great results so far and it was see through! done 4 big rides, clean gear oil.... it can be machined ok. just clean the corrosion off completely, totally, absolutely none at all ...Get the picture? i had it water blasted and then picked at it for half an hour to make sure all the pits were cleaned out. Its the biggest risk to the job.

 

[Puckerbush]

I have worked on many corroded cases and some had holes through the case. I use JB Weld and so far no problems.

 

[RUF]

Thank you so much for telling me your experience.

 

[Bengt Husky]

t


Why not strip the case right out and weld it....I had to do that on my 82 430. It's a difficult job but it can be done. It might not look that nice but it's much better that Devcon

 

[hva-factory]

That's right Steve. It is reasonably easy to get it welded up! Send it to www.realitymotorworks.com and Nick will get it stripped, blasted, Magnesium welded and re- powder coated. See the pic attcahed of one he did for me. Almost half of the chain cover web and the back stub were built back up ready for machining. The key is the correct grade magnesium based filler rod and a good welder...
Andy Elliott

 

[jimspac]

The key is knowing the exact grade filler rod to use. Does anyone here happen to know it? The next best is to use strips cut from a discarded case. I will have some after I cut the reduction web out of a 250CR case to convert to 430 crank usage. But those chunks I am holding in reserve

 

[jimspac]

Also for anyone not intimately familiar with JB Weld, it is good to 600°F more than fine for any lower end case patching. Fuel resistant as well