372 pipe in the wood vs muffler

[Evan]

I think I know the winner..

Was fun.

 

[Evan]

Rakers tuned.

 

[ballisticdoughnut]

Seems like the muffler was better, pipe wasn’t too far behind though.

 

[Evan]

To be fair pipe isnt matched to exhaust port yet and doesnt have a spark screen.
Possibly alittle smaller outlet might livin it up.

Will play with it more tomorrow

 

[J D]

Ideally you want a tuned expansion chamber, something like this...

Which I believe is made for a 3120xp

 

[thompsoncustom]

Hard to tell from the videos if one is better than the other.

I timed all the cuts as close as I can on youtube.

So from the first video:

Custom Pipe
1st cut: 41 secs
2nd cut: 51 secs

Muffler
1st cut: 50 secs
2nd cut 50 secs
3rd cut 49 secs

The second vid I only timed the 2nd cut on each due to the first cuts having issues on both.

Custom Pipe
2nd cut: 57 secs

Muffler
2nd cut: 66 secs.

Need a different log so the tip of the bar isn't in the other piece of the Y sometimes.

Does one fell different than the other?

 

[Evan]

Hard to tell from the videos if one is better than the other.

I timed all the cuts as close as I can on youtube.

So from the first video:

Custom Pipe
1st cut: 41 secs
2nd cut: 51 secs

Muffler
1st cut: 50 secs
2nd cut 50 secs
3rd cut 49 secs

The second vid I only timed the 2nd cut on each due to the first cuts having issues on both.

Custom Pipe
2nd cut: 57 secs

Muffler
2nd cut: 66 secs.

Need a different log so the tip of the bar isn't in the other piece of the Y sometimes.

Does one fell different than the other?

Thank you for timing. I have a 28" bar that might be better and different chain. Dont feel like this chains pulling. I shouldn't have to push.
Found a pipe to fit inside the pipe outlet should do something? Increase pressure?
They feel about the same

More later today. Im sick and unable to sleep.

Pipe I think still shows some promise

 

[thompsoncustom]

Found a pipe to fit inside the pipe outlet should do something? Increase pressure?
They feel about the same

You might find this interesting



They tested a bunch of different designs and dyno tested them. The one that's closest to yours made the most power.

 

[Evan]

Ive watched it. Partly why im playing with this.

Got to thinking outlet size change could completely change things. Aswell provide a slip in spark screen