first time portin...

Thank you fur your input Clem...yah...the ring still has a little spring to it....thank you...

 

That piston looks fairly worn. Push your ring up past the ex with a piston and measure end gap with a feeler gauge.

 

Yea Redfin it's pretty worn. I'm sure looking at that piston that the low compression is from it. The ring must be worn to some degree as well.

The ring may seat but it's only seating to a degree that the ring still has left.

 

Thank you fur your input redfin and Clem...yah...lol...it's all worn out...I did pull the ring...I had another use ring off a used L65 piston...its got a little more pop now...but I can't run it till I get gas and mix...it's slobbering just like the other 2....if a person wanted to....could you put a L65 cylinder is on a 61 crank case....or is the stroke different....thank you...

 

We're these saws slobbering like you describe before? Or do you think all the grinding your not getting complete combustion?

Or were they so dirty before you didn't know. I find it strange if ThE mix is the same they started slobbering all of a sudden. The only change you made was grinding.

 

Thank you fur your input Clem...I don't know...the 2 372's ran fine before...the 61 ran like crap...all 3 run much better but slobber...I only opened the case on 372...change the ring on the 61 and there was a good coating of oil...like I have said...I am runnin that out board mix wich , is 3 months old...that's why I need to get fresh gas and mix. I have posted a lot of pictures...do you see anything with my grindins that mite be causin this...I am a green horn hear...lol...and am tryin too learn...will the L65 cylinder fit on a 61 case...thank fur all your help Clem...

 

I don't know anything about porting? I just am saying if everything else is the same it's really strange. Your running the same mix so that's the same. 3 month fuel is not the problem. If your saws didn't do this specific thing before it's not the oil (although I still advise and would change oil for other reasons as well)

 

L65 is 36mm stroke. 61 is 34mm.

 

Thank you fur your input Clem...I don't know...the 61...I have know idea what was run thru it...but I did run my 3 month old saw mix thru it. I didn't do much to it...opened up the intake...open up exhaust and mod muffler...thank you...

 

Thank you fur your input redfin...ok...thank you...

 

If they're slobbering they're tuned too rich. Any oil will allow you to tune them. The 372 is going to be real rich until they hit about 14 k or higher. A ported one will usually 4 stroke to 15.5k.

 

Thank you fur your input md...last night I was readin up on four strokin...and I down loaded a couple of videos on tunin the 2 Stoke carb. One of the things they said...if you do a top end rebuild...run the low a little rich fur more oil. If you turn the low out...dose that makes it richer...turn it in makes it leanner? True or not...the same fur the high? I am not a good tuner...but i am tryin to lear...and I'm not sure of the four strokin ...I understand it...I think...it runs a bit rough...then cleans up in the cut...is it the blue coil that runs up too 15. K...is it restricted...is the black one off the 365 I think it is the non restricted one...how hi dose it run up to....thank you...

 

Especially with muffler mods on those big saws you should easily hear the distinct 4 stroke. Instead of waaaaaaaa it will sold like waaabbaabaabaabaababababa . It will sound like it's stumbling not like a rice rocket taking off. Or just screaming

Turning either screw out or two the left (loosening it) will make the saw richer...either the Idle circuit on L or the High speed jet for H.

L is kind of delicate spot. Too lean and one your lean and can scuff pistons but you have a delay when you grab trottle. Too much or rich you won't idle right and will flood out after extended idle. You also will have to turn up idle speed if it's too rich to keep it idling cause too much L at idle will reduce rpms.

 

No. You need to put them on like youtube or some other host and then link them here. It's really easy. Just post the link and they show up in the post as the video so all you have to do to watch it is click the play button. Uploading to youtube is not hard. I was a newbie at that two years ago myself.

 

Your H adjustment is what they are referring to for more oil after a rebuild and yes that is good practice for a couple tanks.

 

Yea I should of made that clear. Most if not all the "slobber" is most likely due to your H set too rich. Unless you let your saws sit around and idle for a half an hour or so I doubt the wet exhaust could even be from the L even if you idled them long periods. The H adjustment is where that slobber comes from.

 

Thank you fur your in put redfin and Clem....ok...that sounds good...I watched the video again and the guy says he is goin to run the low a little rich so the saw will get more oil on a top end rebuild...I will lean the Hi out a bit...thank you fur all your help...have a good day....

 

You want the L and H a bit rich on a rebiuld. Unless all your going to do is idle it the L being rich won't really help get more fuel/oil in the top end when your actually using the saw.

Your L can be totally out of adjustment and saw run pretty good if not perfect wide open...there totally different circuits.

 

Thank you fur your input Clem...I understand that now...lol...wish me luck...thank you...