064 crankrod knock?

[Fruecrue]

From the position of the keyway, I believe he is rotating the saw back and forth near BDC.
Other than foreign material, I can’t think of anything that would make that much noise.
Missing wrist pin bearing, bad lower rod bearing?
Maybe, but it looked like close to 90 degrees rotation in the video.

 

[Stevetheboatguy]

From the position of the keyway, I believe he is rotating the saw back and forth near BDC.
Other than foreign material, I can’t think of anything that would make that much noise.
Missing wrist pin bearing, bad lower rod bearing?
Maybe, but it looked like close to 90 degrees rotation in the video.

I can't watch the vid. My internet sucks. But I've had plenty of pistons contact the crank webs at bdc. Mostly with hyway and golf pistons.

Just throwing it out there as something to check.


Steven

 

[Fruecrue]

I can't watch the vid. My internet sucks. But I've had plenty of pistons contact the crank webs at bdc. Mostly with hyway and golf pistons.

Just throwing it out there as something to check.


Steven

You may be onto something there.

 

[oaky]

the knock noise ended up just being the clutch. but the free rotation did seem excessive.

long story. had the awhole bottom end put back together with new bearings and seals kept the old crank, from a guy that had pulling tools. put a new oem piston in a cleaned up used 064 jug from mastermind. rebuilt the carb tried starting it, it was rough pulling tho. should of stopped there and i should of pressure vac tested it but i didnt. it ran but wouldnt stay running without steady throttle. pretty sure the flywheel seal wasnt pushed in enough and the flywheel *f-worded it up.

but yeah after i pressure vac test it ill open it up cause i was paranoid to begin with but now you guys got me more paranoid

 

[Stevetheboatguy]

the knock noise ended up just being the clutch. but the free rotation did seem excessive.

long story. had the awhole bottom end put back together with new bearings and seals kept the old crank, from a guy that had pulling tools. put a new oem piston in a cleaned up used 064 jug from mastermind. rebuilt the carb tried starting it, it was rough pulling tho. should of stopped there and i should of pressure vac tested it but i didnt. it ran but wouldnt stay running without steady throttle. pretty sure the flywheel seal wasnt pushed in enough and the flywheel *frenched it up.

but yeah after i pressure vac test it ill open it up cause i was paranoid to begin with but now you guys got me more paranoid

Ocd is a b itch... But it's a good thing when you are wrenching on things.

Case in point.....


Let me know when you guys see it. Shouldn't take long.


Steven

 

[oaky]

but ! after looking at it !
there may be alittle play in either the wrist pin bearing or low connecting rod bearing. but with my lucki’ll probably have to rip her open again an get a new crank

 

[oaky]

see what? the fairy dust?

 

[Stevetheboatguy]

but ! after looking at it !
there may be alittle play in either the wrist pin bearing or low connecting rod bearing. but with my lucki’ll probably have to rip her open again an get a new crank

Not picking or being a smart ass. Just want to make sure you are positive you have it solid. This little gem I'm working on would have come back and bit me hard. Take the extra time. It's worth it in the long run.


Steven

 

[oaky]

yea, i outa get a set of them puller tools so when this happens its not that big of a deal to put a case together.

 

[Funky sawman]

Looks like failed main bearing cage

 

[Stevetheboatguy]

see what? the fairy dust?

Not quite. But that's all that was keeping this one from coming apart at 10000rpm hahahaha





@Funky sawman is the eagle eye


Steven

 

[Wonkydonkey]

I had a 200t that did something like your vid, I got as a non runner, it was like this when I looked into it

 

[oaky]

I had a 200t that did something like your vid, I got as a non runner, it was like this when I looked into it

i'd be happier than a pig in *s-word if thats what it is.

 

[jacob j.]

i'd be happier than a pig in *s-word if thats what it is.

Did you use an aftermarket wrist pin bearing?

 

[oaky]

good question..i used the old one that was in there originally.
i do believe the guy before used an aftermarket piston so maybethe wrist pin bearing is as well.
did not think of that..

 

[oaky]

found this one in a tiny box at my nos dealers place this evening.

 

[oaky]

video qualities bad but yep! original wrist pin bearing was worn out. lower rod seemed okay.

 

[oaky]

thanks guys.

 

[rocketnorton]

imo, you'd wanna look at that in rod w/pin.

 

[oaky]

i did