Part Six: The Exhaust System

[Magnumitis]

Weird

 

[mdavlee]

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Yes they can[/QUOTE]
Might be a touch loud in front of it.

 

[rogue60]

I'm being sarcastic. Ain't much I can do here



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I've done some backyard porting on this old style of ports before from the good old days of when they just drilled holes in the liner for ports on old saws like Canadian and Mcculloch chainsaws.
Got my old Canadian to breathe winds up the old tank dunno how it doesn't throw the rod lol.
I modded them like this ya get the idea-

 

[49er]

Condulet cover! Well it's what I had.

 

[dolmarkid]

Quad port exhaust ftw

 

[dolmarkid]

Triple ported exhaust is also nice

 

[ManiacalMark]

Im shocked nothing about internals was mentioned.

 

[MustangMike]

I have found that some 066/660s like a 1/2" hole drilled in the back of the baffle, rather than fully removing it. Other 066/660s don't like it. I think it depends on the porting, but I can't explain. The more opened up muffler sounded more responsive when just piss revving it, but it the wood it did not have good torque.

Also, if we are talking about internal baffle, why does everyone remove the 460 baffle, it really does not seem to restrict anything? I have even thought of putting one on a 440/044 to see what happens.

My brothers 460 did not seem to like having the baffle removed, until I advanced the timing, then it seemed better.

I recently did an Asian 440 BB, and opened up the dp muff cover on that. Ended up replacing it with a un molested dp cover. I won't say there was any noticeable difference in performance, but with the opened up cover it sucked fuel like crazy! Maybe because the Transfer is a little high at 118?

 

[Moparmyway]

 

[ManiacalMark]

I just put a pipe in my 461 muffler, find out tomorrow how it does and if I need to change it.

 

[Fruecrue]

I just put a pipe in my 461 muffler, find out tomorrow how it does and if I need to change it.

Pics?

 

[Mastermind]

Right now, my exhaust gases are deadly.

Just sayin.

 

[Glock37]

Right now, my exhaust gases are deadly.

Just sayin.

Stay in the shop no sparks !

Or well find u in the cow field smoking


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[RI Chevy]

LMAO

 

[ManiacalMark]

Pics?

I'll take some after I get it in some wood to try it. Just started it up, gave it a little tune and ran it through the rpms. Idling it sounds like a ported 066

 

[ManiacalMark]

Pics?

 

[Fruecrue]

I changed the lighting a bit.

 

[ManiacalMark]

Thanks lol, I thought it might be too dark.

 

[ManiacalMark]

Decided to change it up a tad. Didn't really like the way it ran even though I was cutting frozen wood. I honestly dont think the flip will change much but getting rid of the DP cover will.

 

[Ketchup]

Anybody do a whole bunch of smaller pipes or horns? My thinking is you could "tune" scavenging by changing the number of small draw points. Would it create too much turbulence?