Where is the 1- in, 1-out muffler diagram or cutaway?

[Zeke]

I found this one on at least 20 threads. I've seen pics of the later muffler, but not the whole schematic like this drawing of the 2 in design.



What is specifically different on the later 1-in model.

[Zeke]

One more request. I don't know what happened to the graphic I copied into the first post. It was there yesterday.

Need cutaway for one in- one out muffler.

[Won]

I've saved these off various posts:

[sailchef]

?????????

[David E. Clark]

Or perhaps this hand drawing?

[mb911]

surprisingly similar to our mufflers internally

[Gordo2]

Milt,

A couple of the above pictures are from when I modified a 1 in / 1 out to dual out:

SC, Carrera Bischoff Muffler Modification, Mod, Gut, Gutting, Dual, Two Out

From what I found, internal layout of the mufflers can be significantly different from year to year, by the same manufacturer.

Gordo

[Fleming]

David, I have since updated my sketch to a drawing of the Dansk modification. It's easier to read - don't you think? (I just had to bring it up to the drawing level, of world famous sculptor Jeff Gamble - who did the often duplicated pre-1974 design)

[Zeke]

Thanks much. I think the photos will help me the most.

[David E. Clark]

David, I have since updated my sketch to a drawing of the Dansk modification. It's easier to read - don't you think? (I just had to bring it up to the drawing level, of world famous sculptor Jeff Gamble - who did the often duplicated pre-1974 design)

I would have given you credit for the drawing but I couldn't remember where I got it. Sorry and NICE WORK!

[RWebb]

who knows what the inside of 2 in 2 out Monty looks like??

[911st]

Anyone know if the ends of the two pipes at the right side of the can are open on the ends or not?

My thought is to cut everything out to the right of the center bulk head for a 1-1 sport muffler.

Originally Posted by Won

I've saved these off various posts:

[Gordo2]

Originally Posted by 911st

Anyone know if the ends of the two pipes at the right side of the can are open on the ends or not?

My thought is to cut everything out to the right of the center bulk head for a 1-1 sport muffler.

The bottom pipe (inlet) is capped; exhaust is routed/forced through the holes. The top pipe (outlet) is open.

Pictured in the above link I provided.

Gordo

[911st]

thx Don.

Just opening up that cap should basically make it a sport muffler.

I belive some of the 1/1's had a loop with holes that conected the two tubes.

[Gordo2]

It isn't apparent from the pictures, but I did some significant re-routing of the internal flow to get even distribution out of both outlets/tailpipes (the outlet pipes are like one long pipe, drilled at the center chamber to allow the exhaust to exit out both tailpipes evenly).

I imagine it would be much easier to get relatively even flow with sport outlets since both outlets would be feeding off of the central chamber.

Gordo