My 365vs2188vs390

[Termite]

This is my first attempt at videos. The wood is 28" oak. The 365 and the 2188 have the same bar and chain.
The first 390 video had semi chisel chain, the second had chisel, all chains are full comp.

 

[svk]

Nice videos. I like how the dog watches you patiently.

I noticed the 390 is cutting significantly faster than the 2188 even though it is running a longer bar. Were you running semi chisel on the other two saws?

 

[Termite]

No, all chisel chain except the one video. The dog is smart he knows if I am just bucking up or cutting a tree down. If I am cutting a tree down he is right behind me going crazy. When the tree hits the ground he attacks it.

 

[blsnelling]

Is the 2188 muffler modded only?

 

[rburg]

I believe the 2188 only has a mm.

 

[svk]

No, all chisel chain except the one video. The dog is smart he knows if I am just bucking up or cutting a tree down. If I am cutting a tree down he is right behind me going crazy. When the tree hits the ground he attacks it.

Just noticed the EC. So the 390 is ported?

 

[stihlaficionado]

Though down on displacement the 365 ran well.

 

[Termite]

Is the 2188 muffler modded only?

Yes, the 2188 has a muffler mod only.

Just noticed the EC. So the 390 is ported?

Yes, the 390 was ported by Eric C.

 

[svk]

The big power increase makes sense now. Nice looking saws!

 

[Termite]

Though down on displacement the 365 ran well.

Thank You, I have been messing with it.

 

[Termite]

Right now, my 365 cuts the same speed as my 2188 in 28 inch hardwood. So, does anyone think I should go for more with the 365 or call it good? The upper transfers are untouched and the exhaust can go wider. This saw is no longer strato.

 

[stihlaficionado]

Right now, my 365 cuts the same speed as my 2188 in 28 inch hardwood. So, does anyone think I should go for more with the 365 or call it good? The upper transfers are untouched and the exhaust can go wider. This saw is no longer strato.

Stock squish?

 

[BGE541]

Wider but man looks like a runner, good job. What you at now 21-22 BD?

 

[Termite]

Stock squish?

No, real close to .020.

Wider but man looks like a runner, good job. What you at now 21-22 BD?

Sorry, I should have posted these:
Starting duration numbers after base gasket delete were:
Ex. 156=102 ATDC
Int. 147=73 BTDC
Xfr. 125=117.5 ATDC
Bd. 15.5
After porting duration numbers were:
Ex. 161=99.5 ATDC
Int. 158=79 BTDC
Xfr. 125=117.5 ATDC
Bd.18

 

[BGE541]

Almost identical to mine but I have 2* more blown down... Very quick response I have a (loose) theory that to a point more BD pressurises the case and can increase throttle response... Looks good!

 

[Termite]

Almost identical to mine but I have 2* more blown down... Very quick response I have a (loose) theory that to a point more BD pressurises the case and can increase throttle response... Looks good!

2 degrees more BD, Huh, what is your exhaust?

 

[BGE541]

100... My cyl must be a little different. What's you squish? Mines right at .020".

 

[Termite]

100... My cyl must be a little different. What's you squish? Mines right at .020".

Mine is the same .020.

 

[BGE541]

I'd leave the trans where they are but that's just my guess

 

[Termite]

I'd leave the trans where they are but that's just my guess

I would only consider making the transfers wider.