What's on your bench?

[MG porting]

It chaps my ass because I just put brand new bearings in it. I’m not going to chance it; its getting split and another set of bearings. Again, its not my saw and the sentimental value is high on this saw. To be honest; I am utterly crushed that I wrecked the cyl on a saw that meant so much to the owner.

Yea here you but don't beat yourself up crap happens and unfortunately it happens a lot with saw's darn things are spinning a lot of RPMs.

 

[usmcbuckwild]

Looks like it's running a pop up?

If that's the case, machining the band would fix the cylinder if you went to a normal piston. It wouldn't affect the intake timing

Yes, .030 pop up inside the squish band. You may be right. I’ll have to measure it again to be sure.

 

[usmcbuckwild]

Yea here you but don't beat yourself up crap happens and unfortunately it happens a lot with saw's darn things are spinning a lot of RPMs.

I hate mistakes. Premature failure of parts I installed equates to a failure/mistake on my part. Or at least that’s how I see it. I take anything I attach my name to very seriously. If it ain’t perfect, it ain’t mine.

 

[Mkinslow]

I hate mistakes. Premature failure of parts I installed equates to a failure/mistake on my part. Or at least that’s how I see it. I take anything I attach my name to very seriously. If it ain’t perfect, it ain’t mine.

NOT saying you did anything wrong at all but I usually cut the tangs off of the clips. OEM or aftermarket. Seen to many things like that happen. It does happen though my friend,so dont beat yourself up over it.

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[usmcbuckwild]

NOT saying you did anything wrong at all but I usually cut the tangs off of the clips. OEM or aftermarket. Seen to many things like that happen. It does happen though my friend,so dont beat yourself up over it.

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Live and learn. Ain’t gonna be any ears on any clips from here on out, i promise you that

 

[tickbitintn]

I usually leave just a tiny bit of the ear, like enough to grab with hemostats.

I did a 550 that spit a clip for a tree service had about 50hrs on it before it spit the clip though, I figured if it was to lose a clip it would do it right away.

They never paid me for the first rebuild after their ground guy straight gassed it so I didn't offer to fix it....

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[redline4]

Do you guys install them so the opening in the clips faces a certain direction?
It sounds kind of silly, but I was taught and have always oritentated the opening to be at the bottom of the piston.
Supposedly forces acting upon them could cause them to compress and pop out if the opening was 90 degrees to the actual plane the piston traveled.
I have done hundreds of car and small 4 strokes this way and never had 1 come out, but they dont spin the rpm either.

 

[Mkinslow]

Do you guys install them so the opening in the clips faces a certain direction?
It sounds kind of silly, but I was taught and have always oritentated the opening to be at the bottom of the piston.
Supposedly forces acting upon them could cause them to compress and pop out if the opening was 90 degrees to the actual plane the piston traveled.
I have done hundreds of car and small 4 strokes this way and never had 1 come out, but they dont spin the rpm either.

I've thought about this also but saws I've torn down I've noticed them all different directions so..... idk really

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[Deets066]

0.040 from the base if I remember correctly. It might have been 0.060. I’d have to check my notes. I remember the recipe was 0.020 from squish and i got to 0.019 and called it good.

You could go quite a bit farther

 

[redline4]

I've thought about this also but saws I've torn down I've noticed them all different directions so..... idk really

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I have taken apart many car engines that were all over the place as well.
But, I have always installed them with the opening down.

 

[huskyboy]

The position of the circlips opening matters too... 12:00 or 6:00 is best.

 

[tickbitintn]

The position of the circlips opening matters too... 12:00 or 6:00 is best.

This.

Always.

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[usmcbuckwild]

You could go quite a bit farther

Please expand upon this

 

[redline4]

The position of the circlips opening matters too... 12:00 or 6:00 is best.

I have always done opening at 6. Its easier for my fat fingers to install them that way.

 

[Mkinslow]

I have always done opening at 6. Its easier for my fat fingers to install them that way.

I have also. I wonder how long it takes them to move around from rpm or what have you.

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[huskyboy]

I have also. I wonder how long it takes them to move around from rpm or what have you.

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They stay put... well there suppose to

 

[huskyboy]

If you put the opening on the side they can pop out because of the up and down force of the piston “opening” the circlip.

 

[usmcbuckwild]

They stay put... well there suppose to

They are supposed to. I wonder if a dab of stuper glue (general term to mean some sort of adhesive) would help ensure they stay in place.

 

[huskyboy]

They are supposed to. I wonder if a dab of stuper glue (general term to mean some sort of adhesive) would help ensure they stay in place.

It would have to be pretty temperature resistant?

 

[srcarr52]

Had to fix another silvey motor. It must have been dropped at sometime, the bottom plate was bent and had a small crack. Welded the crack and skim cut the surfaces to make everything true again.