displacement of a chainsaw

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Is it really a big difference from 61.5 to 66.7 cc on chainsaw? I have a jonsered 630 and i found a 670 cylinder kit for it but other than having a fresh cylinder for it im not sure if its worth doing?
also is there a way to get the writing on this page to be in english
thanks wayne

 

[rms61moparman]

With the right saw, the difference can be tremendous!!!
The difference between an MS290/310 and 390 for instance is unbelieveable.

I'm not familiar with the saws you mention, but the old drag racing adage still applies....."There is no replacement for displacement"!

Mike

 

[rburg]

The 2 saws you have listed were over 0.5hp difference per the original specs. I had the 625 which was 61.5 and now I have the 670 and there is a noticeable difference in overall power. The 630 would be closer in power to the 670, but I believe you would notice the difference.

 

[atpchas]

also is there a way to get the writing on this page to be in english
thanks wayne

Try the pop-up menu at the lower left corner of the page. I think that's what I used when the site went "foreign" on me.

 

[[email protected]]

thanks i looked and looked and never saw that pop up list

wayne

 

[Roanoker494]

I recently had to ask myself the very same question, I have a 372xp that needed a piston. A good aftermarket piston was going to cost me 50 bucks or I could get the whole 52mm bore bore for about 100. In the end I decided to go back stock because a gain of 2mm was not that important to me and I do not honestly believe there would be that noticable of a difference. Now if I had already had the big bore kit on hand it may have been a different story.

 

[madhatte]

I sure do like my 670! I bought it as a basket case, slapped a few odds and ends on it, and rebuilt the chainbrake with the help of Bailey's. Now it's a screamer!

 

[jmarheine]

That is almost 8% difference in displacement. It makes a difference in horsepower.

 

[pioneerguy600]

Do it,..you won`t be dissapointed at all and if you are a porter then port it or have it ported by a good porter and you won`t even know that saw.