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Yet another 346 build thread

Red97

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Well everyone else is building them, have a couple here so I might as well join the party.



First time splitting the case on a saw. New bearings/seals on both sides.



Using an am jug, rather ugly transfers. Last couple of saws I have built lacked compression. Not this time :)

.057 off the base a ton out of the band. After cutting the base numbers were 79/111/139!!!



Squared the intake a bit, raised the exhaust to 105. Long grueling process getting the transfers to 120 left the intake at 79.

Squish at .017



All sealed up, this one is getting the walbro 198 carb. And Prolly gonna need the lil blue button :D
 

Stihlbro

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Nice. What did you use for circle clips?


Sent from my iPhone using Tapatalk
 

drf256

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Didn't Mattyo build a 350 with a hyway cylinder that was pretty fast?
Yes he did.

I hope I recall the detail correctly, but the saw I'll never forget.

He used a 45mm top end that cost more than an OEM one goes for now.

He got 200 psi with no band cut. I think it was one of his firsts and he didn't remember exactly what his numbers were. Could be a case of selective amnesia also.

It was the most impressive saw I ran at the 2015 CT GTG, and I ran a lot. I even ran a few ported 346's by some top builders. MattyO's chewed them up and spit em out.

He just got it "right".
 

Red97

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Here you can see some differences in the am jugs, notice the flat on the intake spigot. This jug (350/346) I took .035 off the bottom. In take at 78/9 too

You can tell this chamber is a good bit larger than the remaining chamber on the current 346.

Here is my benchmark to meet/exceed still have that test log/chain.
 

Red97

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Starter broke at 235 psi gauge leaked down before my phone was charged enough for the pic.

Guess round 240 psi

That too much??? Guess I'll find out :)

Definitely has more "pop" than the last one I built.
 

drf256

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Starter broke at 235 psi gauge leaked down before my phone was charged enough for the pic.

Guess round 240 psi

That too much??? Guess I'll find out :)

Definitely has more "pop" than the last one I built.
You just can't tell on assembly. The oiled rings can fool ya.

I have found, in my own experience, that my saws usually wind up right around my initial assembly oiled rings figure after breakin. Maybe a drop lower.

Does your gauge have a boo boo?
 

Red97

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You just can't tell on assembly. The oiled rings can fool ya.

I have found, in my own experience, that my saws usually wind up right around my initial assembly oiled rings figure after breakin. Maybe a drop lower.

Does your gauge have a boo boo?

That test was with a bit of mix through the plug hole, and case.

The gauge wasn't done any favors testing this saw. (Flopping around) while attempting to drop start.
Pretty sure it leaks round that stupid quick coupler.

You drip some actual 2t oil down the plug hole when you do the initial comp test?
I just smear some on the ring and around the bore, while installing the jug.
 

drf256

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No drip.

I oil the ring lands. Coat rings with oil. Wipe dry. A drop of oil smeared in the cylinder, then assemble.

With an .006-8 ring end gap, that small amount of oil does make a difference.

Again, all of the above is what I've experienced, YMMV. I'm not saying the same will apply to all.
 

Red97

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No drip.

I oil the ring lands. Coat rings with oil. Wipe dry. A drop of oil smeared in the cylinder, then assemble.

With an .006-8 ring end gap, that small amount of oil does make a difference.

Again, all of the above is what I've experienced, YMMV. I'm not saying the same will apply to all.

Sounds bout what I did, then added some mix for a bit better coating.

Spun it around a few time to blow the excess out before adding the comp tester.

Thank you for the reply.
 

Red97

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Nice work!

I fine the 346 needs no more than 190-200 psi.

Just got a couple oem 346 top ends for $105 each. So will be building another one soon.

Thank you,
Probably right bout a nice 346 in that 190 210psi range.

My goal with this is to see what all the hype bout 215+ compression is about.

So far just busted recoils. :)

Figures, I bought a couple a/m kits before the price drop.
 

idiotwithasaw

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Is the 198 better than the el32?
 
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