Porting thread

Can some one direct me to a porting thread that starts from the basics and describes the areas of the cylinder and exactly what needs to be done? maybe even a show and tell...Ive did a search and nothing like that really seems to come up.. maybe even a cylinder description thread that points out what is what? Thanks...Lee

This should help some. There is a lot of info in this thread.

http://www.arboristsite.com/chainsaw/108900.htm?highlight=porting+101

Brian13 said:

This should help some. There is a lot of info in this thread.

http://www.arboristsite.com/chainsaw/108900.htm?highlight=porting+101

Click to expand...

http://www.arboristsite.com/chainsaw/40236.htm
http://www.arboristsite.com/chainsaw/85802.htm
http://www.arboristsite.com/chainsaw/39724.htm
http://www.arboristsite.com/chainsaw/113678.htm
http://www.arboristsite.com/chainsaw/130069.htm
http://www.arboristsite.com/chainsaw/108900.htm
http://www.arboristsite.com/chainsaw/85488.htm
http://www.arboristsite.com/saw-building-101/83777.htm
http://www.arboristsite.com/chainsaw/177311.htm

I hope you have a few hours.

nmurph said:

http://www.arboristsite.com/chainsaw/40236.htm
http://www.arboristsite.com/chainsaw/85802.htm
http://www.arboristsite.com/chainsaw/39724.htm
http://www.arboristsite.com/chainsaw/113678.htm
http://www.arboristsite.com/chainsaw/130069.htm
http://www.arboristsite.com/chainsaw/108900.htm
http://www.arboristsite.com/chainsaw/85488.htm
http://www.arboristsite.com/saw-building-101/83777.htm
http://www.arboristsite.com/chainsaw/177311.htm

I hope you have a few hours.

Click to expand...

That should be in a sticky somewhere!

I was really bored one day.

vs 026

This is likely a great way to get my lightweight nimble older Stihl 025 to meet or exceed a friends Stihl 026 or the new MS261 power....

There isn't as much to do with a 025. You can widen the intake and exhaust ports, and mod the muffler. You could to a pop-up piston if you wanted to and had the know-how. The design of the cylinder/crankcase make it virtually impossible to reduce squish.

blsnelling said:

That should be in a sticky somewhere!

Click to expand...

Brad, Please....Please don't recommend any more stickies :bang:

blsnelling said:

That should be in a sticky somewhere!

Click to expand...

I added a link to that post to the FAQ sticky. Won't let me rep him though...

mweba said:

Brad, Please....Please don't recommend any more stickies :bang:

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They desperately need to change the policy on stickies. Things that ought to be stickied are not, and lots that shouldn't be are. No way should forum members be able to buy a sticky with their points.

blsnelling said:

They desperately need to change the policy on stickies. Things that ought to be stickied are not, and lots that shouldn't be are. No way should forum members be able to buy a sticky with their points.

Click to expand...

Start a poll...you have enough credits to make it a sticky.

nmurph said:

There isn't as much to do with a 025. You can widen the intake and exhaust ports, and mod the muffler. You could to a pop-up piston if you wanted to and had the know-how. The design of the cylinder/crankcase make it virtually impossible to reduce squish.

Click to expand...

Stumpy did a thread on working up a 290. Not an 025, but a clamshell... I ran it last weekend... It sure ain't like any Farm Boss I've ever run!!!

Brian13 said:

This should help some. There is a lot of info in this thread.

http://www.arboristsite.com/chainsaw/108900.htm?highlight=porting 101

Click to expand...

Thanks Brian13
I was all set to sit down over the Christmas break and read that one,and any more i could find.
Porting 101 was gone,one of the victims of the big hack switchover.Now i just have to find some time to set aside again,maybe next ChristmasDidn't catch the date of the last post was just happy to see Porting 101 again
Thomas