| sam_w |
Fri Aug 22, 2008 10:34 am |
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When I look at a header, I see that all the exhaust pipes are made the same length before the are joined together and the flange for a muffer is welded on.
In a standard muffler the exhaust pipes are of radically different lengths between the front and the back cylinders. i.e the Heater box or J-tube length.
Are there some equalizing tubes inside the muffler to tune the exhaust, or is it just sound deadening?
Does anyone have a picture of a muffler that has been sliced in two?
PS I did not know exactly where to post this as it also applies to beetles as well. |
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| joe cool |
Fri Aug 22, 2008 10:38 am |
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| I've seen a few that have rusted through. Nothing in there but mouse litter and wasps, no pipes that I am aware of. |
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| krusher |
Fri Aug 22, 2008 10:39 am |
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there just extensions of the tubes you see going in with hole in to let the sound into the chamber.
Its not equal length, thats why you gain power on a stock engine when going to a 1 3/8 header. |
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| sam_w |
Fri Aug 22, 2008 10:51 am |
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I now see why a header is said to increase power by about 10%.
You do not need a noisy muffler to increase performance. |
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| Erik G |
Fri Aug 22, 2008 1:08 pm |
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| if you cut open a stock type 3 muffler, you will see that vw made great improvements for that car. it would be nice to see such a thing for a bus |
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