Muffler Refabrication

[KKV270]

Hi.

Anyone woth a picture of the inside of a muffler?? Mine got messed from accident impact. My area only has second-hand items that have well served (plenty of rust).

Knowing the physics behind mufflers (thanks to the beetle one being even more simpler), I was thinking of getting one fabricated - that way, I benefit from a new product.

The guys willing to do the job are to open the seam (so I will have a picture for anyone in such future need ) ....just wanted to save them the hustle.

So, anyone with the pic??

What are your comments on the same? Anyone ever done this?

[darzoom]

as requested

[darzoom]

another

[KKV270]

Hi Darzoom,

thank you..

I got to have a look in my muffler as well. I have a sifferent thing. The pipes are not crossing but cut off about an inch from the inlet. By this I mean, the exhaust pipe is nothing past an inch from the entry into the muffler.

I was reading the Rob and Dave explanation on the concept of measured pipes but was supprised to see non in mine. Could it be a different physics playing or probably a modified muffler?? It didnt show any seam tampering..... Im confused.

[KKV270]

Hi.

I guess I will settle for what I have as it a standard muffler....just probably different design/year.

it hass 3 comartments separated by 2 plates each with holes like a seive. the exhaust pipes enter into the further most compartments.


Ill send the pic of the messed up muffler.

[darzoom]

As I had no idea what you had as a muffler before the wreck or know if it was stock or not, the pictures I sent were the only cutouts I could find of a VW beetle stock muffler simular to what came on your vehicle. I am not sure what is "actually" on it as there are tons of aftermarket systems and as many designs. Pick one and get it back on the road. Have fun!

[KKV270]

Thanks for that.

I will fit in what I got mada....It was much easier...however, I will have to, someday, get the original designed muffler and fit to feel if any difference. I like the detailed explanation given by Rob and Dave on the length of cylinder 2 & 4 exhaust pipes that was factored in by making them cross each other to ensure exact length as the cylinder 1 & 3. My biggest concern is in what is mentioned that a distortion in this engineering can cost up to 3 HP ....and I wouldn't want that any single bit. Good thing, I had a good experience with what I had. I hope the design worked for good.

[KKV270]

here is a pic of the wreck.

[darzoom]

bottom line on any exaust you want to make the head pipes the same length before the muffler. As the front cylinders pipe length from the head to the muffler includes the heat exchanger (or J pipe), the length of the reak pipes need to match that overall length as closely as possible. So, the length needed for the rear cylinder pipe length is inside the muffler. If running a header system the pipe length would vary to make the distance from the valve to the merge point (collector) as close to qqual as possible. That is what we did when we built headers for racing. You are on the right track. Good luck!

[Blue Baron]

There were millions and millions of these cars sold. There has got to be a new muffler available somewhere near you. Some old repair shop must have one in its obsolete parts stock.

[KKV270]

Hi Blue Baron,

guess what, I got one that was in very good shape.....tho still with same design as my previous one and not crossing pipes inside. I believe it was a well thought through design for our engines.

Cheers.

[darzoom]

Great!!!