What's on your bench?

[Bigmac]

I’ve often thought about doing something similar, but haven’t had a cylinder I don’t care about to try it on lol

Ya maybe, the q port 82cc macs were the weakest of the bunch, it was meant to replace the decomp and be quieter, should let it rev a little better, but slightly weaker down low. It the Mac’s most preferred the decomp cylinders with standard exhaust port

 

[Wonkydonkey]

Was told it was a great runner. Still runs...just won’t oil for some reason. Lol

Are you going to get some numbers from the 461 for learning stuffs, maybe put the cylinder on another saw and do some testing stuffs...

Lots to learn

 

[Frank bierce]

Are you going to get some numbers from the 461 for learning stuffs, maybe put the cylinder on another saw and do some testing stuffs...

Lots to learn

Planning on getting another saw. Will just have to find one. Lol. Wanted to put up a pic of the porting....but afraid it may be “bad form” to do so.

 

[Bigmac]

Planning on getting another saw. Will just have to find one. Lol. Wanted to put up a pic of the porting....but afraid it may be “bad form” to do so.

Is that because it’s good or bad?

 

[Frank bierce]

Is that because it’s good or bad?

Porting looks good. Just wasn’t sure if posting someone else’s porting was kosher.

 

[WillG]

Toro snowblower with a dirty carb.

Sent from my E6810 using Tapatalk

 

[Bigmac]

Porting looks good. Just wasn’t sure if posting someone else’s porting was kosher.

Ya I hear ya, Lots of people do when they are selling, people like to know what there getting.

 

[HYPERSAWS]

Came from Phil’s...or so I was told. Tearing it apart now.View attachment 211378View attachment 211379View attachment 211380View attachment 211381View attachment 211382

The famous Phil exhaust

 

[HYPERSAWS]

Most of his saws he builds have that in the exhaust. They rev thru the roof just don't have the "raw grunt"

 

[Frank bierce]

Most of his saws he builds have that in the exhaust. They rev thru the roof just don't have the "raw grunt"

Piston does show some scoring though. Cylinder doesn’t reflect the scoring.

 

[HYPERSAWS]

Is the chrome peeling above the exhaust roof at all?

 

[Frank bierce]

Is the chrome peeling above the exhaust roof at all?

 

[Frank bierce]

 

[Bigmac]

View attachment 211460

Looks like there might have been a sharp edge on that intake side and maybe that wiped the oils off and caused it, it’s only on the one side of the intake. Doesn’t look like any machine work was done

 

[Wonkydonkey]

It’s also got (what Iron horse chainsaws calls) finger ports in the intake, which apparently directs fuel charge to the transfers..

 

[huskihl]

 

[Bigmac]

View attachment 211469

What mods are you doing to that?

 

[huskihl]

What mods are you doing to that?

Notta. Lol.
But they do make the same noise as that 461 posted above

 

[XP_Slinger]

View attachment 211455
View attachment 211457

It uses a windowed piston so why not grind in some closed port transfers. I’m really curious how that saw ran. Could be crap or next level...never know

 

[huskihl]

It uses a windowed piston so why not grind in some closed port transfers. I’m really curious how that saw ran. Could be crap or next level...never know

JMS was porting 661’s like this. It messes with scavenging and they won’t quit popping without leaning them out on the ragged edge