Spuds Porting and Tuning Thread

[tobimax]

Hi Steve,

 

Steve ported a Huskey 346xp that I salvaged from a skip! Cylinder needed cleaning up as the saw had a scored the cylinder. So I thought why not try porting. "The special job" done, porting, a meteor piston and a sculptured hole in the exhaust. The saw is now like a mad wild hornet.

Cheers mate! Sorry about all the emails

Paulm

[spudulike]

Lol we bin here before I will have a look :lol:

 

Cheers Martin, still have to sort out the ignition timing, that is a real headache, I believe 22.5 degrees of advance is around right and will need to key the flywheel.

 

Your bit is relatively straightforward, take around 0.75 off the outer crown and bottom of the cylinder - must check the position of the first ring before we machine anything.

 

Currently cleaning it for spraying as the paint is pretty crappy.

 

Once we do your bit, I will measure the port durations and get cutting:thumbup:

[wyk]

Cheers Martin, still have to sort out the ignition timing, that is a real headache, I believe 22.5 degrees of advance is around right and will need to key the flywheel.

 

Your bit is relatively straightforward, take around 0.75 off the outer crown and bottom of the cylinder - must check the position of the first ring before we machine anything.

 

Currently cleaning it for spraying as the paint is pretty crappy.

 

Once we do your bit, I will measure the port durations and get cutting:thumbup:

 

I hope you mean .075. And even then, that's a lot.

[Tom Richards]

Hello sorry for my ignorance what are the benifits of porting a saw ?

[spudulike]

I hope you mean .075. And even then, that's a lot.

 

Sorry Wes, we have something known as the metric system in the UK:lol:

[wyk]

Sorry Wes, we have something known as the metric system in the UK:lol:

 

Numbers just confuse me. Put them all in a row from 1-10 and it's even more confusing!

 

And on another note...speaking of numbers:

 

 

Weren't we just talking about importing saws from the US? This puppy has .035 off the combustion side of the jug and .045 off the base. That's inches were talking there

 

More to come.

Edited January 13, 2014 by wyk

[spudulike]

Hello sorry for my ignorance what are the benifits of porting a saw ?

 

There are a number of benifits, generally you can get an older saw running as fast as a later generation saw.

 

You could port say an MS200T and suffer less fatigue as it will take less effort and time to cut larger limbs or fit a larger bar so you don't need to haul up a larger saw quite so often.

 

One major benifit is doing work with a 60cc saw where normally you would be up a size to say 70cc or even much larger saving your body suffering the fatigue a larger saw would have on it.

 

On the other side, you have to consider the H&S if others use your saws, they are noisier and thirstier to use but are a lot more enjoyable to use that their non ported equivalents.

 

Others will have other opinions

[spudulike]

Numbers just confuse me. Put them all in a row from 1-10 and it's even more confusing!

 

And on another note...speaking of numbers:

 

 

Weren't we just talking about importing saws from the US? This puppy has .035 off the combustion side of the jug and .045 off the base. That's inches were talking there

 

More to come.

 

Interesting.............

 

I was basing my measurements on the 357XP we did that had 0.5mm pop up so reckoned 0.75mm should bring the compression up a bit:thumbup:

[wyk]

Interesting.............

 

I was basing my measurements on the 357XP we did that had 0.5mm pop up so reckoned 0.75mm should bring the compression up a bit:thumbup:

 

This is a 59cc saw from the Pacific North West, AKA PNW. It's gonna look a lil' different than you're used to. Prolly sound a lot different, too, looking at how the muffler is modded...

[Tom Richards]

Cheers what are the costs involved in this sort of work Spud ? I realise that prices may differ. Just watched a you tube video about it.

Thanks Tom

 

PM me if you would prefer