Porting A 390XP Top End For A Worksaw

[Mastermind]

Very nice work and thanks for showing how to properly do some work on s 390!

Properly?

No such thing really. This is just what I've ended up with after doing a chit load of em.

Here's what can happen to the 390XP...

 

[andyshine77]

That's really consistent for such relatively inexpensive parts.

 

[redoakman]

i love looking at these threads so much info to take in this little brain of mine . thanks randy

 

[Mastermind]

That's really consistent for such relatively inexpensive parts.

Mass produced too. Hell, my squish cut could have caused the .002" difference. LOL

 

[Agent Smith]

Properly?

No such thing really. This is just what I've ended up with after doing a chit load of em.

Here's what can happen to the 390XP...

View attachment 223359

Holy moly! That just happened out of nowhere?

 

[p61 western]

I wish I had time Mike.....

I've got a nice 084 that has a small fuel issue.....simple stuff. Ain't had a chance to fix it. If I get any "spare" time I either spend it with my family, or my cows. LOL

Lmao yeah I know time is on short order. Be nice having your 084 done though.

 

[Lee H]

Great thread Randy, Thanks for sharing. What is the real difference between a 390 and 395 other
than 1mm in bore size.

 

[angelo c]

Great thread Randy, Thanks for sharing. What is the real difference between a 390 and 395 other
than 1mm in bore size.

a chit ton of weight ?

 

[Mastermind]

Holy moly! That just happened out of nowhere?

That's what happens when these saws run over 13,200 too long. Too much RPM causes a vibration that loosens the jug bolts, and rattles the muffler apart.

Great thread Randy, Thanks for sharing. What is the real difference between a 390 and 395 other
than 1mm in bore size.

The transfer inlet and the stroke I reckon is the most difference Lee.

395 on the left....

 

[Wolverine]

For a firewood hack like me, it's great seeing these threads. Thanks Randy. I ain't never gonna be all up in a saw like that but it's cool seeing the process you guys go through when I send ya my stuff.

 

[Mastermind]

For a firewood hack like me, it's great seeing these threads. Thanks Randy. I ain't never gonna be all up in a saw like that but it's cool seeing the process you guys go through when I send ya my stuff.

Thanks Jason.....it's good knowing the effort is appreciated.

 

[Dub11]

Thanks Jason.....it's good knowing the effort is appreciated.

You out did yourself again.

Has to be a personal best for speed for ya?

 

[huskyhank]

Got me all perked up when I saw the thread title. And it is great to learn more about the 390 and your work.

 

[Mastermind]

Has to be a personal best for speed for ya?

LOL

I might not be quite as slow as I pretend to be.

Last week I shipped 9 saws, this week I shipped 7.

Here's the deal......I can sell about 5 porting jobs a day. No way I hell I can do that many. But.....I have a tough time telling people no.

 

[XP_Slinger]

a chit ton of weight ?

That’s some troof.

 

[BlacknTan]

This is a very informative thread for me, having only ever run stock saws. I appreciate the effort to put this together.. I certainly learned something!

 

[CJ Brown]

Thanks Jason.....it's good knowing the effort is appreciated.

Very much appreciated here! Beats the school of hard knocks by a country mile

 

[Catman]

I’m not a Machinist, not even a mechanic, but I sure appreciate looking at threads like this!

 

[dustinwilt68]

Takes a lot of time and care to qualify work like this, and I know doing threads like this takes time too, sure appreciate all the effort you put into it! I learned a few things I haven't tried before, really like how you use the card stock, such a simple and effective tool.

 

[Fruecrue]

Nice work Moobs.
Thanks for taking the time to share.