Author Topic: Efcos 181  (Read 470 times)

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Offline mdavlee .

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Efcos 181
« on: December 11, 2014, 04:10:29 pm »
Any reviews of the 181? One has popped up on local craigslist.

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Online srcarr52

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Re: Efcos 181
« Reply #1 on: December 11, 2014, 04:55:50 pm »
I think they are a good saw.  Nicely built, firm feel in your hands, not too heavy.  The cylinder cover is a bastard to put back on because of the throttle link and the air filter boot.

https://www.youtube.com/watch?v=hctqR5ScrDg

Offline 660magnum

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Re: Efcos 181
« Reply #2 on: December 11, 2014, 05:26:41 pm »
Nothing wrong with owning that chainsaw. That would be a good blocker.

But it has been messaged a little bit.
We should share what we know... someone may learn...
That knowledge can live after us... and that "Pays It Forward".
Be all that you can be . . .

Offline mdavlee .

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Re: Efcos 181
« Reply #3 on: December 11, 2014, 06:03:48 pm »
Saw looks strong. I may have to see about getting that one on craigslist. Same bore and stroke as a 681.

Online srcarr52

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Re: Efcos 181
« Reply #4 on: December 11, 2014, 07:23:18 pm »
It's a little messed with, I cut 0.040" out of the squish to make a 272 piston work in it.  They have a tiny combustion chamber to being with so I had to cut the camber wider to increase the combustion chamber or it would have pull around 260 psi.  It currently pulls around 220 psi and has a nice combustion chamber shape.



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Offline mdavlee .

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Re: Efcos 181
« Reply #5 on: December 11, 2014, 07:39:42 pm »
Yeah that is a tiny chamber. It may be a fun saw to play with pretty cheap.

Offline Eccentric

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Re: Efcos 181
« Reply #6 on: December 11, 2014, 09:14:23 pm »
I love 5ci class saws. 8)
-Aaron

For older saws:
Tune the H side so that it 4-strokes (burbles) at WOT unloaded and just cleans up when under load.
When you lift cutting load, the saw should immediately revert to 4-stroking.  Fine tune the transition point for the wood you're cutting.
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Online srcarr52

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Re: Efcos 181
« Reply #7 on: December 11, 2014, 11:39:07 pm »
Yeah that is a tiny chamber. It may be a fun saw to play with pretty cheap.

It's hard to see but there are two angles besides the squish band that I cut in there to smooth out the turn and to enlarge the combustion chamber.  Not the worst I've had to do, I had to cut three angles on my 288 after taking 0.080" our of the squish. 
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Offline mdavlee .

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Re: Efcos 181
« Reply #8 on: December 12, 2014, 06:06:35 am »
Did you have 300 lbs of compression on the 288 before you opened the chamber?

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Re: Efcos 181
« Reply #9 on: December 12, 2014, 09:44:44 am »
Did you have 300 lbs of compression on the 288 before you opened the chamber?

I didn't even try it.