395 husqvarna

[Jscb1b]

I have a just out of the box 395. What are the simplest upgrades to it? I'm planning on opening up the muffler first. Is there a ratio of exhaust port to muffler size? 70 %? 80 %? 90%?. Straight pipe it? What about timing advance? Upgrade the air filter? Base gasket delete? Thanks!

 

[Squareground3691]

Getter done ,

 

[J.Noss]

I would suggest you get it ported, there's several good guys on here or Joe at HMWF can do it.. the % gains on the 395 are very substantial with porting, should be able to get over 10hp and they'll typically do muffler mod and timing advance for you as part of it

 

[srcarr52]

Easiest muffler mod is to add an extra deflector in front of the OEM one. Dyno Joe has stamped deflectors that make it easy.

Muffler deflector LARGE cut to fit

Large size cut to fit. 20 gauge mild steel. Approx deflector size 1.5x1.5x.75" Good size for most 70cc+ saws

worksaws.com

As far as % size of the outlet, I have not seen any detriment by going very large.



Ignition advance is usually around 1/3 keyway.

The OEM air filter is a great filter and there is no reason to upgrade it.

Base gasket delete will depend on the initial squish clearance which is usually in the mid 0.040's, as long as removing the gasket wont get you below 0.020" then do it.

 

[Wolverine]

I did a simple BGD plus added a 288 deflector on a 2nd port to the muffin on my 394. Nice bump in performance. But in the end, the ride to Iowa for Shaun to port it was worth every penny.

 

[gurwald]

Mm, bgd and ta is a good start.

 

[MemphisMechanic]

Delete the base gasket.
Modify the muffler.
Remove limiter caps.
Leave factory air filter on it and ensure the air injection tube is still there, guiding clean air from behind the flywheel into the filter.

Enjoy.

Mine is woods ported and pulls a 42” bar hard enough that a 60” would certainly be well within its capacity.

The only thing I’d change would be to angle my added muffler port to the right more: it blackens a big log when it’s up blowing on one spot for any amount of time. That happens quite a bit when pivoting on the dogs while bucking a 30-40” oak.

 

[Dustin4185]

All of those mods will help, but sending it to get ported really turns them onto a beast! I love mine from @Mastermind ! Pulls a 42 in hardwood with ZERO issues.

 

[cuinrearview]

XS395, 41" .404 in oak

 

[pro94lt]

all a 395xp needs is a 42" bar and a huge tree...

 

[MemphisMechanic]

all a 395xp needs is a 42" bar and a huge tree...

And a really good porting job.

I loved the saw before I ported it. Now it’s just plain amazing.