porting 359husky

[old guy]

anybody got some numbers please, thanks .

 

[davidwyby]

If @Benwa would come around …

 

[Jusgunn3]

I know @farminkarman has done a few.

 

[old guy]

Wal, I went & did er up. I put this together a couple of years ago, a 359 top on a 357 case & crank, base gasket delete, aftermarket muff with a 15/16 outlet.
Checking the No's I got ex 105, trans 118, in77, squish .022.
I decided to go with that.
I widened the intake 1/8 on each side, the exhaust not quite that much.
I had allready matched the lower transfers, oh, this wearing a 372 carb also.
After a few cuts comp is at 160. My, my, my, those rakers have gotta come down.

 

[Benwa]

Wal, I went & did er up. I put this together a couple of years ago, a 359 top on a 357 case & crank, base gasket delete, aftermarket muff with a 15/16 outlet.
Checking the No's I got ex 105, trans 118, in77, squish .022.
I decided to go with that.
I widened the intake 1/8 on each side, the exhaust not quite that much.
I had allready matched the lower transfers, oh, this wearing a 372 carb also.
After a few cuts comp is at 160. My, my, my, those rakers have gotta come down.

@davidwyby Typical me, day late and dollar short. The 357 Top end I did for yours ended up at
Intake 77°
Exhaust 103°
Transfers 121°

@old guy sounds to me like you're on track. They're such great saws. Underrated in my opinion. Especially once they're punched up a bit.

On these saws I like intake at 77-78° I have a personal 359 set at 80° without issue
I set my exhaust at 101-103° most like the 105° range from what I've read.
Squish set at .018 - .020
I feel they like less blowdown than some others, I set mine at 16°-18°
I widen both intake and exhaust ports to 65% of bore as well as stretching the upper transfers towards the intake side a touch. I open up the lowers too, but I don't go crazy. I also open up and narrow up the divider in the transfer covers. They really take to a slight bump in ignition timing too. Right around 28° btdc.

 

[old guy]

Yeah, I did the ignition too I moved it one fin on the flywheel.
I was amazed at the torque, chain was pretty good, 20'' bar in 12'' white oak and I had to pull pretty hard to slow it down.
Funny thing, it sat in the pole shed for probably 18 months and when I pulled the muffler it was filled with acorns, gonna have to put a plug in that big hole.

Ya know, I have another one of these, hmmm!

 

[pbillyi69]

what numbers do y'all use on the 357?

 

[Kiwioilboiler]

what numbers do y'all use on the 357?

I use 1 to 4 so far.
#1 is an XS.
#2 is tidied and twin port muffed.
#3 is re-cranked 'narrow rod'.
#4 is a runs already.

 

[Motorka]

timing advanced on this ?

 

[old guy]

I have been using this saw for a couple of days now in red oak, 20'' bar, new dukes chain, it is an animal.
My stock 372 has gone into hideing.
Thanks for all the input Guys, couldn't have done it without Ya.