Author Topic: Ported ECHO 330 EVL  (Read 350 times)

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Offline Moparmyway

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Ported ECHO 330 EVL
« on: October 07, 2013, 05:38:47 am »
Took a few tries to get the numbers for the ports, just tried to see how the different numbers affected the operating characteristics of the saw. The cylinder took a trip to Tennessee and got its base and squish cut, then it was opened up to the following numbers:
Exhaust 160 duration
Intake 160 duration
Transfer 132 duration
blowdown 14
Compression just over 165 psi with just under 0.019 squish

This is 16" bar, hickory (dropped last year) and she is still a little on the fat side - I like it nice and cool
http://www.youtube.com/watch?v=LImYkWMM21U

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Offline Cut4fun .

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Re: Ported ECHO 330 EVL
« Reply #1 on: October 07, 2013, 12:58:33 pm »
I think I got one of these in a parts box. Looks like new otherwise.   

What made you dig deep into one of these?


Sounds sweet in the cut.  8)
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Offline Moparmyway

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Re: Ported ECHO 330 EVL
« Reply #2 on: October 07, 2013, 11:38:50 pm »
I did some work to my 038 Magnum and my 044, and the little ECHO was having a hard time cutting, rings were worn and compression was down, so when I got a Wicked Work saw kit fo rmy 044, I looked it over and decided to open up the 330 EVL and give her a little more power, started opening up the ports a little at first, put in Cabers, got some advice from Mastermind and Terry, and just kept using the 330 and going back in. Finally I sent the cylinder to Terry for a squish and base cut, got it back and I kept using her and going back in. I got a little carried away on the transfers, and ended up putting a base gasket back on her to give me a little more blowdown ....... then finally liked the way she ran with the above numbers.

Stock - she would run 9000 rpm's unloaded with a muffler mod
Now - she holds 9000 rpm in the cut with the bar buried and me pressing on her in some real hard hickory.

Not bad for 33 cc's ...?!

 

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