Author Topic: Stihl Contra Rebuild Questions  (Read 252 times)

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Offline bulletpruf

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Stihl Contra Rebuild Questions
« on: March 13, 2017, 02:16:27 am »
Fellas -

I'm going through 3 Stihl Contra's now.  They are all completely disassembled, or close to it.

A few questions -

-Is there any reason to take the connecting rod off the crank?  I get a bit nervous about bending/tweaking something but I think I could use my connecting rod vise that I use on V8's.  I guess I need to figure out what type of bearing the big end of the rod takes, too.

-Do you replace all bearings and races?  Crank, piston pin, etc?  I have new bearings and races for the crank where it rides in the case halves.  I have some OEM and some aftermarket.  The original ones look to be in good shape so I wonder if y'all consider it a waste of time and money to swap out.

I'm reusing original jugs and pistons, but will install new Caber rings on all.

Thanks

Scott

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Online jmester

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Re: Stihl Contra Rebuild Questions
« Reply #1 on: March 13, 2017, 09:57:35 pm »
If the big end rod bearing feels smooth and there is no up and down movement I would leave it alone. The main bearings is your call to make if I had the case split I would put bearings in it. Just my 2 cents.
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Offline bulletpruf

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Re: Stihl Contra Rebuild Questions
« Reply #2 on: March 16, 2017, 04:39:27 am »
Thanks for the input.  I'll have 'em all apart at the same time, so I should be able to compare the big end bearings to each other.  If one feels iffy, I'll replace it.

Scott

Online jmester

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Re: Stihl Contra Rebuild Questions
« Reply #3 on: March 16, 2017, 08:47:56 am »
Sounds like a good plan to me. When in doubt change them out. Maybe more money in parts now but may save a bunch in the long run. Keep us posted on your progress.
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Offline bulletpruf

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Re: Stihl Contra Rebuild Questions
« Reply #4 on: March 16, 2017, 09:50:24 am »
Will do!

Thanks

Scott

Offline EHP

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Re: Stihl Contra Rebuild Questions
« Reply #5 on: March 25, 2017, 10:54:35 pm »
some where I got a couple brand new pistons and rings for the 106cc, I bought them from the man that brought stihl to Canada , he was from Germany

Offline bulletpruf

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Re: Stihl Contra Rebuild Questions
« Reply #6 on: March 25, 2017, 11:39:42 pm »
some where I got a couple brand new pistons and rings for the 106cc, I bought them from the man that brought stihl to Canada , he was from Germany

I would be interested in a few if you want to get rid of any.

Thanks

Scott

Offline EHP

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Re: Stihl Contra Rebuild Questions
« Reply #7 on: March 29, 2017, 01:03:44 pm »
first I got to find them, that maybe quite the task LOL, I got tons of chainsaw stuff here
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