500hr on a ported 661

[tree monkey]

January 27, 2023

Ms661 inspection

youtu.be

 

[MG2186]

Nice video Scot, sure is a lot of internet misconceptions about a lot of stuff for sure. Max flow wouldn’t sell much if people seen this

 

[jacob j.]

Great video Mr. S - an excellent breakdown and demonstration of a saw motor with long service, good maintenance, and excellent records.

 

[Outback]

Any chance you could tell me the over all length and pin to pin center length on your 661 rod? Yours might be topless right now. Thanks.

 

[Nutball]

I wonder if more power could be had with the intake port deflector gone? Of course that could let the piston get too hot, because they wouldn't put it there for no reason.

 

[tree monkey]

Any chance you could tell me the over all length and pin to pin center length on your 661 rod? Yours might be topless right now. Thanks.

it’s back together now. Maybe on the next one

 

[Outback]

Bummer, thanks for the reply. Please keep me in mind.

 

[Redfin]

Hope you are well Scott. I may be mistakin but I thought I put those crank measurements in the 661 stroker thread.

 

[Outback]

You are... The rods are about the only thing not discussed other than the appearance of the crank. Good lead though. I was hoping.

 

[huskihl]

Any chance you could tell me the over all length and pin to pin center length on your 661 rod? Yours might be topless right now. Thanks.

I have a 661 pulled apart out in the garage awaiting new bearings. Message me tomorrow or Monday and I can get you close on those numbers

 

[Stump Shot]

@tree monkey
Would you think it wise when a fella is working on one of these type saws to remove the two fasteners on the deflector and put some loctite on them and re-install?

 

[tree monkey]

@tree monkey
Would you think it wise when a fella is working on one of these type saws to remove the two fasteners on the deflector and put some loctite on them and re-install?

yes. They are trapped by the cylinder base.

 

[Kiwioilboiler]

@markds2

 

[markds2]

Very interesting video Scott! I have a very high hour MS661C in bits on the bench at the moment, it was badly siezed and these were the mains. Clutch side cage is two thirds gone.

 

[Kiwioilboiler]

Very interesting video Scott! I have a very high hour MS661C in bits on the bench at the moment, it was badly siezed and these were the mains. Clutch side cage is two thirds gone.
View attachment 363044

Can you measure the crank for our mate up above cuz?

 

[markds2]

Can you measure the crank for our mate up above cuz?

I can prolly try in the morning

 

[Outback]

It would be nice. As soon as i asked the question people started teasing me with pictures.

 

[markds2]

Any chance you could tell me the over all length and pin to pin center length on your 661 rod? Yours might be topless right now. Thanks.

From my rudimentary measurements with calipers you are 64mm pin to pin and just on 91mm overall rod length.

 

[Outback]

You sir are a gentleman. Thank you. Close is good enough. I'm working on if an idea is feasable. Thanks again for your time.

 

[jacob j.]

You sir are a gentleman. Thank you. Close is good enough. I'm working on if an idea is feasable. Thanks again for your time.

You gonna put an 084 rod on a 661 crank?