[T3] Muffler tail pipes...

[Jim Adney]

On 6 Oct 2014 at 5:00, J. Jonik wrote:

> So....is it that a Two Piece tail pipe-damper (never heard "damper"
> word before) from who-knows-what-year, will be compatible with another
> Two Piece tail pipe-damper on the muffler?    It LOOKs like it lines
> up to put on this '73 muffler. Only thing is...the rusty old (but still
> solid) parts replacement I hope to use is narrower than the one on the
> car now. 

You have to be careful that all the parts you're looking at are 
actually Type 3 parts; there are bus parts that look similar, but the 
mounting tabs at the bend are different. They won't fit.

There's only 2 kinds of Type 3 end pieces: 2-part and 1-part. They 
don't interchange because their inlet pipes are different diameters.

By now, the muffler you find on a '73 may be either early or late. 
Either will fit perfectly as long as you use the right 
damper/tailpipe with it. If by "narrower" you mean smaller in 
diameter, that's an early, 2-piece, one and you should not try to 
install it on a late muffler.  

>  That's about "flow restrictive"?    If so...what's that mean?

Just what it says: more back pressure. The '72-3 cars got less 
restrictive exhausts. My guess is that this was to partly make up for 
the loss of power due to the increased emissions controls. Reducing 
the exhaust back pressure generally leads to a little increase in 
power.

BTW, the late, larger diameter, damper/tailpipes are pretty hard to 
find these days, and that has made them very expensive.

-- 
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Jim Adney, jadney at vwtype3.org
Madison, Wisconsin, USA
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