Post up your ported cylinder Artwork

[Bigmac]

I usually end up using a combo of several bits

View attachment 148674

Nice looking port!

 

[Bigmac]

View attachment 148685 View attachment 148686 View attachment 148687

Looks like s fun build...what’s the plan?

 

[Deets066]

Looks like s fun build...what’s the plan?

That’s my 6 cube, there’s a thread on it.

http://opeforum.com/threads/6-cube-066.8895/

 

[00wyk]

Spruced up an old 2165 open port for a local farmer a while back. Mild porting for more mid range, and a gasket delete:

(stock oe 365 photo by Mkinslow)

22" bar in fresh Beech:

 

[MG porting]

Doing a little port work on a ms660 clone for my friend who's been wanting me to build for him. Not quite finished yet but will post more pics Monday.

 

[Deets066]

Doing a little port work on a ms660 clone for my friend who's been wanting me to build for him. Not quite finished yet but will post more pics Monday. View attachment 150874 View attachment 150874 View attachment 150875

Doesn’t look like you widend or changed timing much?

 

[smokey7]

If i remembered correctly he doesn't change timing or time area. He just widens the exhaust port mouth and cleans up casting flash. Calls it a mild port. Ive tried doing it and never could notice any difference in performance in any motor not just saws. Am i alone in that finding?

 

[drf256]

If i remembered correctly he doesn't change timing or time area. He just widens the exhaust port mouth and cleans up casting flash. Calls it a mild port. Ive tried doing it and never could notice any difference in performance in any motor not just saws. Am i alone in that finding?

I've found its a waste of time on most saws. I take a clay imprint, at times, of the inner port and the outer port. If the outer is already much bigger, opening it just makes more work.

An 036, for instance, has the same size ex gasket as an 064. So Stihl gave a 62cc saw the same outlet as a legendary 85cc saw.

Opening more does little, but the muff needs to be matched anyway.

 

[smokey7]

Cleaning casting flash does help. There is alot of engines out in the world that benifit from port matching. Yamaha 650-701 are major ones. When oem put the sleeves in they dont match up atall and they leave them like that. Very respectable gains can be had by just matching up the sleeve to the jug. Most chainsaws dont have a sleeve but generally do have casting flash in the ports especially the transfers. In my experience the transfers live and die on direction of flow. If you disrupt the flows direction it hurts them bad. Most guys on here are way beyond that information. So that comment is aimed toward the up ans coming tuners. To test take 2 saws same numbers each with a different transfer angle and they will run totally different.

 

[Chainsaw Jim]

Cleaning casting flash does help. There is alot of engines out in the world that benifit from port matching. Yamaha 650-701 are major ones. When oem put the sleeves in they dont match up atall and they leave them like that. Very respectable gains can be had by just matching up the sleeve to the jug. Most chainsaws dont have a sleeve but generally do have casting flash in the ports especially the transfers. In my experience the transfers live and die on direction of flow. If you disrupt the flows direction it hurts them bad. Most guys on here are way beyond that information. So that comment is aimed toward the up ans coming tuners. To test take 2 saws same numbers each with a different transfer angle and they will run totally different.

Pioneer p60/61/62 cylinders are that way with the transfers. I've seen as much as 1/8" lip mismatch. I don't believe they're sleeved, but they have that appearance from the cast.

 

[MG porting]

Doesn’t look like you widend or changed timing much?

I'm going to lower the exhaust down to around 100 or so I'm going to widen one mm on each side of the exhaust maybe I'm still tossing that around in my head the intake will be razed and I've already widen it one mm on each side of the port I'm building this one for a big Bare so I'm shooting for more torque than anything.

 

[MG porting]

I've found its a waste of time on most saws. I take a clay imprint, at times, of the inner port and the outer port. If the outer is already much bigger, opening it just makes more work.

An 036, for instance, has the same size ex gasket as an 064. So Stihl gave a 62cc saw the same outlet as a legendary 85cc saw.

Opening more does little, but the muff needs to be matched anyway.

I opened up the outside of the port of the exhaust quite a bit this one not as much it's just my preference I guess it works for me everything else I do to the ports seam to all work together not saying that it works on all saws but the 660s I've worked over like it not just the clones ether but every one has there own way lol and I do like your style too.

 

[drf256]

Do what works for you. Absolutely.

I wasn’t trying to criticize, just talking theory.

 

[MG porting]

Do what works for you. Absolutely.

I wasn’t trying to criticize, just talking theory.

No worries i know you mean well.

 

[82f100swb]

This was an 026 my neighbor and I did. Unfortunately I lost it in a house/shop fire before I got to run it.
I haven't replaced my compressor or porting tools yet but I will soon.

 

[PA Dan]

This was an 026 my neighbor and I did. Unfortunately I lost it in a house/shop fire before I got to run it.
I haven't replaced my compressor or porting tools yet but I will soon.

Sorry to hear about the fire!

 

[MG porting]

I work on the transfers a little bit today haven't touched the uppers yet going to wait on those for now but I put in a bridge port on them because the last one took kindly of it so I'd figured this one might to.

 

[drf256]

I like that.

 

[MG porting]

I like that.

Thank you Sir even though I'm building this one for a friend I'm not going to hold back to much. Lol

 

[MG porting]

Now I know some of you are going to be going ask what the heck are you doing lol its only jb weld so just going to give a try I know what razing it does but how about just making look like a mako shark mouth. I'm having some fun with this one. Lol