rod play

[goin hard]

I was told side to side play in the connecting rod is ok but up and down play is not is the correct ? Bottom end bearings are good tho I believe. No play in the crankshaft whatsoever.

 

[mjgnslngr]

I was told side to side play in the connecting rod is ok but up and down play is not is the correct ? Bottom end bearings are good tho I believe. No play in the crankshaft whatsoever.

SOME side to side play is ok. not flopping like a fish in a pail, thats BAD. the rod should have NO up and down play at all.

 

[goin hard]

So how much play is too much?

 

[Blaaster]

No up and down play.

Manual says side to side play is 1mm, but I have known 3mm play without any noticable up and down.

 

[Larry's Shee]

No up and down play.

Manual says side to side play is 1mm, but I have known 3mm play without any noticable up and down.

I'm not going to look but O P should, is that side clearance at big end, or side to side "rocking" of the small end?

 

[Blaaster]

No up and down play.

Manual says side to side play is 1mm, but I have known 3mm play without any noticable up and down.

Let me be clearer.

Side to side play at big end should be no more than 0.7mm.

I was referring to the play at the small end when rocked .

 

[Larry's Shee]

Wasn't slamming you, just wanted claification for O P.

 

[goin hard]

Well at the top on the small end it moves about a half to a quarter inch left or right big end is tight.. I guess next thing is crank bearings and seals

 

[goin hard]

Ok so as far as splitting the casing Wat special tools do i need and are there any little tricks or DOS nd dont

 

[Blaaster]

Wasn't slamming you, just wanted claification for O P.

Not offended Larry, I realised that I was not perfectly clear in the explanation, so I thought I should clear it up.

 

[goin hard]

Well good news is I Dont have to split the casing. I had my neighbor measure the play and Im good to go. But Wat should I use for a solvent that wouldn't hurt anything ?

 

[Blaaster]

I you are wanting to rinse out the crankcase, you can use gas.

Then you need to....

Pour some 2 stroke oil in the crancase on the big end and small end bearing and down the main bearing feed holes, you need at least a tablespoon of oil to lay in the bottom of the case before you assemble it.