Echo CS-670 CS-680

[dq72]

Hi all, Looking for some info reguarding these 2 saws. Wanting to know if a 680 P/C will fit on a 670 bottom end without any modifications? Any advise from the Echo aficianados would be greatly appreciated. Thanks in advance, David...............

 

[Leoncio]

Echo CS-670 vs CS-680

Echo CS-670 vs CS-680

cs 670
66,7 ccm (4,07 cu. in.)
6,5 kg (14,3 lb.)
2200-3200 r/min
12500-14000 r/min
http://www.echo-usa.com/getattachment/50866b9b-0609-4232-80f8-dae7d9a2effd/CS670e_C15103_100208.pdf

cs 680
66,8 ccm (4,07 cu. in.)
6,6 kg (14,5 lb.)
2200-3000 r/min
3600-4300 r/min Clutch engagement
12500-14000 r/min
http://www.echo-usa.com/getattachment/4d3f3d1b-3267-40e5-a1f1-95741265d3e9/CS680es_C03203_022012.pdf

 

[rmh3481]

Yes the 680 P&C will fit the 670.

The differences are the 680 piston uses one ring pinned in the middle of the piston on the intake side. The 670 piston uses two rings with the pins on the sides between the transfers and the intake. Make sure your not working with a 6700 because they use a different intake.

You should be able to make a good runner with a little piston and port work.

 

[SawTroll]

Sad story, really bad power to weight ratio....:msp_sad:


The power specs is up by .1 kW with the 680 vs. the 670 though - but it only is about 3.3 kW vs. 3.2 (4.5 hp vs. 4.4).

 

[echo670]

i have a 670 its only 4.4hp echo told me 5.3hp

 

[SawTroll]

i have a 670 its only 4.4hp echo told me 5.3hp

The power specs are on their UK web-site. The 670 used to be listed at 3.2 kW (4.4 hp).

 

[autis]

if your cuttin hardwood and runnin a 24in bar, i would really suggest semi-skip chain for these saws. helps to keep chain speed up in the cut