Makita 6401 "big bore" or no

[Mike Ray]

I have two makita 6401's and I really like them one with 20" bar other 24" bar. I bought a big bore kit to have if one needs rebuilt, my question is that somewhere I read that you don't see much difference with the big bore unless you are running longer bar than 24. would like to hear opinions on this.I have no need for a longer than 24" bar.

 

[Bob Hedgecutter]

Guess that depends on what kind of "big bore" you are talking about?
7900 NLA but bolts on for an instant OEM upgrade- think you might still be able to get 7910 cylinder kits.

 

[buzz sawyer]

Did one on mine a few years ago - from Bailey's. Definite improvement but you're better off with an OEM 7900 top end if you can find one.

 

[ballisticdoughnut]

Only “big bore” for these saws is aftermarket chicom junk. 7900 top ends are still available if you know where to look. Don’t bother with aftermarket offerings. 7910 top ends are available as well. Go OEM or don’t mess with it.

 

[ballisticdoughnut]

My 6401/7900 hybrid, 28” ES light bar 33RS chain.