390xp Project

[juttree]

New fuel line.

 

[juttree]

And filter, of course.

 

[rmh3481]

Maybe Brad will sell you a 030 pop up piston for that bad boy? Sure would make a difference.

 

[juttree]

Maybe Brad will sell you a 030 pop up piston for that bad boy? Sure would make a difference.

I'm starting stock then porting.

 

[juttree]

Carb kitlimiters trimmed

 

[juttree]

Double pictures, sorry.

 

[palbin]

I have 390xp and 395xp - they seem to be very diffe-
rent saws - well a lot more different than one might
expect buying two big Huskies with just 5cc displac-
ement difference at least ... .

 

[juttree]

I have 390xp and 395xp - they seem to be very diffe-
rent saws - well a lot more different than one might
expect buying two big Huskies with just 5cc displac-
ement difference at least ... .

I haven't used a 390 yet but it's definitely a lot lighter than my 394's

 

[palbin]

Yeah - in my opinion the 395 feels like a substantially
rather than marginally bigger saw - I think the 395
might be "stiffer" in its build up - could perhaps expl-
ain the weight difference (if I am right ... ).

The 395 motor also feels like substantially rather than
marginally bigger in my humble opinion - could have
to do with stuff like bores etc I guess (if I am right ...).

 

[palbin]

I did a rough redneck weighin of a 390xp and a 395xp - the ones
pictured below



Payin attention fuel and oil levels the 390xp weighs about 1 1/4
kilo less than the 395xp (the former 10,5 kilo with 1/3 fuel tank
and full oil tank - the latter 11,5 kilo with almost no fuel and full
oil tank ...) - I use 390 for fellin and 395 for choppin ... .

The motor head of the 395 (upper saw) is a lot bulkier than the
390 (lower saw) ... .

 

[juttree]

I did a rough redneck weighin of a 390xp and a 395xp - the ones
pictured below

View attachment 409953

Payin attention fuel and oil levels the 390xp weighs about 1 1/4
kilo less than the 395xp (the former 10,5 kilo with 1/3 fuel tank
and full oil tank - the latter 11,5 kilo with almost no fuel and full
oil tank ...) - I use 390 for fellin and 395 for choppin ... .

The motor head of the 395 (upper saw) is a lot bulkier than the
390 (lower saw) ... .

I love the power of the 394/395 but if I can get close to that with a bit less weight (and bulk), that would be ideal.

 

[juttree]

The backorderd gasket set FINALLY came, now I can get this saw back together.
Put the crank in the PTO case halfI put a thin coat of Dirko on case halves, I know it's not really necessary but I didn't want to have to separate the case again if I had a leak.case is now back togetherA little knock to center the crankFlywheel side seal is in
That's it for now.

 

[half_full]

looking 4wrd to seeing the final pic

 

[juttree]

Tank is onNew impulse hose
Base plateNew Meteor piston
Checked squish before putting the rings on, ended up with .029Rings are on. I checked ring gap just out of curiosity and got .014 on both
Lastly but not least, the cylinder. The only thing I did to the cylinder was polish the exhaust port, ground out a couple little flaws in the transfers, cleaned up the crown of the cylinder from the beating it took, and also one little spot on the cylinder wall that easily cleaned.
My plan is to run the saw stock first, then do some port work. It's not the most efficient way to do it but I don't have any experience running the 390's so I just want to see what kind of gains I get.

 

[juttree]

Was setting up for a pressure and vacuum test but ran into a little problem. It's not a problem for the test but for the final assembly.
The muffler that came with the saw was too far gone so I planned on using a 372 muffler. They seem to be identical except for the 390 muffler has what looks to be a spacer attached to it between the cylinder and muffler. I suppose I could bend the bracket out just a little bit to get it to work. I can't weld so that option is pretty much out unless I have someone else do it. I'd rather not have to spend for a new muffler if I don't have to because I have a few extra 372 mufflers already.

 

[blsnelling]

Looking good! I like your approach. It's a very good idea to get it running good stock first.

 

[blsnelling]

I have 390xp and 395xp - they seem to be very diffe-
rent saws - well a lot more different than one might
expect buying two big Huskies with just 5cc displac-
ement difference at least ... .

They're entirely different saws. The 395 is more of an updated old school saw. The 390 is basically an overgrown 372 or 346.

 

[jimdad07]

Your project is looking great. Clean em well before you work on them is the way to go.

 

[juttree]

Looking good! I like your approach. It's a very good idea to get it running good stock first.

Thanks brad, what do you think about the muffler issue, think i'll be fine just bending the bracket out a little bit?

 

[blsnelling]

I believe the 372 muffler should bolt right on. It's just not as heavy duty.