Ported 350 results

[Mattyo]

where's 08f150 when you need him...

actually, if you had the stalker gene David, its not hard to figure out who I am, then who my wife is, and then who her sister is...

then again, it may be a little trickier to figure out who MY sister is

and no.... not close

 

[BGE541]

@Landmark just took a ported 350 out with a freshly sharpened chain to help a buddy from church drop 2 12-16" alders and after tank 5 I'm convinced of afew things... 1. Break in makes a big difference on the few I've done. 2. They really like an open muffler. 3. They like 18-20 BD. 4. They like a full key of ignition advance. 5. I'm not 100% sure I have them figured out but they sure make a fun cutting saw along the way...

 

[Landmark]

@Landmark just took a ported 350 out with a freshly sharpened chain to help a buddy from church drop 2 12-16" alders and after tank 5 I'm convinced of afew things... 1. Break in makes a big difference on the few I've done. 2. They really like an open muffler. 3. They like 18-20 BD. 4. They like a full key of ignition advance. 5. I'm not 100% sure I have them figured out but they sure make a fun cutting saw along the way...

Thanks for the info. Timing advance is good tip and I will try that too. Sounds to me like you have a pretty good handle on them.

 

[isaaccarlson]

Sorry, my wife is an only child. I believe it is a 45mm top end. It measured out at about 44.8mm.
One thing I noticed is how much drag the sprocket and bar add to a saw. With a bare crank and flywheel, this saw was incredibly snappy.
Now that the bar and sprocket are mounted, it is a little more tame. You can tell when the chain is getting dull because the rpm drops in the cut just a tad.
It's a good reminder to carry a file.

 

[idiotwithasaw]

This is all good reading. I have a 353 that i put a 346 top on. The most aggressive I have gotten, i have the cylinder decked and a popup turned. I have kept mostly stock numbers, and haven't widened anything. It's pretty impressive as it is, but I can't help but wonder what I'm leaving on the table. Maybe I should widen the intake and exhaust. If I had a right angle maybe raise the transfers a tad.

 

[Mattyo]

After this weekends 350 challenge....

I think compression increase makes quite a bit of difference, as does a muff mod. So I'm not exactly sure how much you left on the table Ben. I know that a stock saw w/ a muffler mod does pretty good. Brad's saw did best in our tests, and although I don't know what his numbers are, he was running a popup, muff mod w/ no screen.

So, you may not exactly need to go back in. My hyway didn't make the power Brad's did, but I'm not going in to monkey with it, because I'm still happy w/ my result.

 

[Tor R]

Brad's saw did best in our tests, and although I don't know what his numbers are, he was running a popup, muff mod w/ no screen

Brad's version also run with 357 carb & airfilter system.

 

[Mattyo]

Brad just reported yesterday that he installed that jug on his 346xp chassis. he tried it w/ the 357 intake tract, then the 346xp tract... 8% slower cut time. so yes, the intake apparently makes a difference. who knows what that translates to in HP.

 

[paragonbuilder]

Brad just reported yesterday that he installed that jug on his 346xp chassis. he tried it w/ the 357 intake tract, then the 346xp tract... 8% slower cut time. so yes, the intake apparently makes a difference. who knows what that translates to in HP.

Like I said before Matt, I think your porting deserves to breathe better! A bigger muffler mod, and maybe the larger carb setup and you may have a different animal!

 

[jmssaws]

Kool thread guy's, good read for sure.

 

[drf256]

Brad just reported yesterday that he installed that jug on his 346xp chassis. he tried it w/ the 357 intake tract, then the 346xp tract... 8% slower cut time. so yes, the intake apparently makes a difference. who knows what that translates to in HP.

Matty,

Your Hyway from last year was pulling 200psi. You said it's down to 160. I can see that making the difference right there.

My comp readings go up, not down, after normal use. I think you need to add a caber to the saw and retest it. Maybe keep a log out and do a before and after time.

That much comp loss just doesn't make sense to me and may be your culprit.

 

[Tor R]

Brad just reported yesterday that he installed that jug on his 346xp chassis. he tried it w/ the 357 intake tract, then the 346xp tract... 8% slower cut time. so yes, the intake apparently makes a difference. who knows what that translates to in HP.

if you go this route you may be interested to read through this thread:
http://opeforum.com/threads/how-to-modify-the-zama-el-42.2351/
Also, MM use 346 intake without the ring.

 

[paragonbuilder]

Brad sent me a message Matt, he says your saws are starving for fuel at high rpm, and you need to raise your granny's to about 15-16 blowdown...
He says you will see a big improvement, maybe try it on one and see...


Sent from my iPhone using Tapatalk

 

[paragonbuilder]

close?

Damn it David! My wife wants to know what we really talk about after catching a glimpse of this photo...[emoji33]

 

[David Young]

Haha
I've been questioned about laughing at the Internet to jokes from people I've never met and some I may never meet.

The thing that confounds her is that our bond is taking a dirty tool that cuts done trees and make it cut trees faster?


Yes that's exactly right honey.

I think we are all a little crazy in good company and supported by some tolerant loving women.

I'll look for more pics. Brb

 

[Mattyo]

no no no no

 

[Mattyo]

my eyes hurt

 

[Mattyo]

Indeed the 199 carb or the el42 may be the ticket here. who knows.

i think everyone here knows that the ny gtg results really took the wind out of my sails, and even though the dyno was really cool and encouraging, yesterday I had another setback. the best possible 372 I could possibly build was sold wednesday, and came back thursday after 10 minutes of running w/ a scored top end. its oem 51.4 P&C....ported. tore it down, can't figure out the cause even after pressure testing and teardown. really discouraging when you do everything right, can't figure out the cause, and still there is a catastrophic failure.

i really need to step away from saws for a while guys... i'm way too frustrated.... i'm not having fun and not making money.

 

[Mattyo]

oh, and the hyway has a new caber ...just before the ny gtg.... haven't tested the compression again...so who knows where its at.

 

[drf256]

Get back on the horse and Ride Matty. Don't let it bring you down, it's only castles burning....