Custom porting

[ELECT6845]

Been awhile since I posted here but thought I would share. I Bought numerous 390’s and 395’s this week along with some MS 460’s, 660’s and 661’s. Most of these saws had scored pistons and cylinders. Wonder why?

390 and 660 cylinder pics of someone’s custom porting.

Everyone can port just buy a Dremel. Lmao.

 

[261cm]

Hold my beer, and watch me port this one!!! Lol

 

[angelo c]

Good enough for who it's for...!!!

 

[ELECT6845]

This might be the best one.
Ms460

 

[huskihl]

This might be the best one.
Ms460

That one would really make you laugh if you marked some parallel lines at the top and bottom of the intake port with a fine sharpie and then mark vertical lines at the edges

 

[RedneckChainsawRepair]

Why I prefer to take in trade stock saws. Some of the crap I have seen isnt even right and hacked or saveable. Unless by a porter I trust.

Some well known porters I would rather take in stock too. Just because I know how they do them. Dont want nothing to do with their saws.

Got a sign for that.

 

[slimbo3006]

Hey don't laugh...I opened up the exhaust on my Stihl string trimmer with a dremmel.....Far from a professional port job, although I will say it looks much better than those

 

[angelo c]

This might be the best one.
Ms460

C"mon Joe...ifn ya practiced a few times I'm sure you could get those nice straight vertical lines on the piston like that. Did you see the way they match (port match- to be exact) the cylinder wall ? Impressive.

 

[Hdtoolmkr765]

This might be the best one.
Ms460

That intake port is a work of art.

 

[Cantdog]

That intake port is a work of art.

Yep........Poor old Art..........

 

[bwalker]

Why I prefer to take in trade stock saws. Some of the crap I have seen isnt even right and hacked or saveable. Unless by a porter I trust.

Some well known porters I would rather take in stock too. Just because I know how they do them. Dont want nothing to do with their saws.

Got a sign for that.


View attachment 1002473

Over the years on this site there have been a ton of absolute hacks. There are only a few people I trust to port a saw and @huskihl is one of them.

 

[jellyroll]

Looks like JMMS ported those.

 

[RedneckChainsawRepair]

Over the years on this site there have been a ton of absolute hacks. There are only a few people I trust to port a saw and @huskihl is one of them.

Yep he is on our trusted porters list for CRG members to know who to choose from. Even his pics used in thread.

 

[bwalker]

Yep he is on our trusted porters list for CRG members to know who to choose from. Even his pics used in thread.

Crg?

 

[Czed]

Been awhile since I posted here but thought I would share. I Bought numerous 390’s and 395’s this week along with some MS 460’s, 660’s and 661’s. Most of these saws had scored pistons and cylinders. Wonder why?

390 and 660 cylinder pics of someone’s custom porting.

Everyone can port just buy a Dremel. Lmao.

Did you buy those from iron horse the YouTube famous porter?

 

[huskihl]

Yep he is on our trusted porters list for CRG members to know who to choose from. Even his pics used in thread.

Yeah, wtf? Everybody else chickened out on the pics. I figured there’d be 15-20 pics to look at in there

 

[huskihl]

Crg?

Chainsaw Repair Group on fb

 

[huskihl]

Did you buy those from iron horse the YouTube famous porter?

No Mickey Mouse ears, so probably not

 

[Czed]

No Mickey Mouse ears, so probably not

He could be trying new things

 

[link]

Less is more, don't grind away adding volume to your crankcase/cylinder unless it really counts.
More volume means less velocity, less vacuum and less compression in the low end at the cylinder/crankcase.

Cleaning up/polish and rounding edges goes a long way - and it dont do no harm.