Spuds Porting and Tuning Thread

[wyk]

That 440 sure does look nice, didn't know Oregon did bars like that either!

 

 

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And they'll do one for you, too ...for $190... *cough*

[wyk]

Got the MS361 finished. She's already blowing almost exactly 200 psi:

 

 

I'll try and get vids as the weather permits.

[D A Tree Surgeons]

Got the MS361 finished. She's already blowing almost exactly 200 psi:

 

 

I'll try and get vids as the weather permits.

 

I'd like to c that in action

[Eddy_t]

Bugger! 357 has popped, loose muffler bolt!

 

 

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[spudulike]

Someone described porting as a slapping a thong on a Granny today:lol:

 

I think a closer description would be taking the granny back in time to 21 and rearing her on steroids and prime steak:thumbup:

 

To clarify - we take a machine that is in good running order and make sure the flow of gasses through the machine is improved, the timing sometimes changed to increase fuel/air charge, ]power band, increase compression and give a healthy saw more power.

 

What we don't do is take a clapped out old saw, overlook bad compression and shagged bottom end then open up the ports! This would be pretty pointless!

[spudulike]

Got the MS361 finished. She's already blowing almost exactly 200 psi:

 

 

I'll try and get vids as the weather permits.

 

Was that a pop up or a dropped gasket?

[wyk]

Was that a pop up or a dropped gasket?

 

Lathe work - .030 off the squish band, .040 off the base, very thin gasket. Squish is set to .018.

[spudulike]

Lathe work - .030 off the squish band, .040 off the base, very thin gasket. Squish is set to .018.

 

Just had to convert to metric:001_rolleyes:

 

That squish is a bit tight!

[wyk]

Just had to convert to metric:001_rolleyes:

 

That squish is a bit tight!

 

I had that squish on my 385XP, too. By comparison, the squish on my 2165 with BB kit is a huge .029" without gasket. But the .030" pop-up helps a bit on that machine.

[tobimax]

I've put my glasses on, I think I have noticed the slight difference:thumbup:

 

Steve, Bit like my exhaust mod!