Author Topic: 390xp info  (Read 1171 times)

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Offline mdavlee .

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Re: 390xp info
« Reply #10 on: June 03, 2013, 06:01:59 am »
If that's who I think it is he's been building saws for a long time. He semi retired and his son was doing some of the saws.

Offline Reddog

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Re: 390xp info
« Reply #11 on: January 21, 2015, 09:08:06 am »
Bump an old thread with a 390xp question.

I have noticed this saw pulls down into mid range rpm but has a load of torque there. So I just use a 8pin to get the chain speed up.

Question is will a muffler mod raise the peak torque curve or just make it louder with little gain in rpm while in the cut?


Offline Cut4fun .

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Re: 390xp info
« Reply #12 on: January 21, 2015, 03:51:12 pm »
The stock 385 I have run were pretty dang doggy IMO, I couldnt imagine a 8T on them. Dont recall running stock 390 only ported ones.


Hopefully others will chime in.
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Offline mdavlee .

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Re: 390xp info
« Reply #13 on: January 21, 2015, 04:58:42 pm »
Bump an old thread with a 390xp question.

I have noticed this saw pulls down into mid range rpm but has a load of torque there. So I just use a 8pin to get the chain speed up.

Question is will a muffler mod raise the peak torque curve or just make it louder with little gain in rpm while in the cut?
You running a 20" or 24" bar?

Offline Reddog

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Re: 390xp info
« Reply #14 on: January 21, 2015, 06:48:48 pm »
20" full comp, 28" and 32" full skip.

Offline aclarke

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Re: 390xp info
« Reply #15 on: January 21, 2015, 09:17:07 pm »
Why not use a 7 pin and file a more aggressive chain?

 

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