I have a solution for ya (did the same thing on my intake pipes).

I used some solvent and a large L-bent bristle brush found at your local Homebrew shop. Let the solvent set for a minute and then simple run the brush through a couple of times. Worked great for me.

Don Preston
'87 Wolfy GL
~Betsy the Mp3 Bus~
  ----- Original Message ----- 
  From: Steve Gough 
  To: vanagon@GERRY.VANAGON.COM 
  Sent: Friday, May 11, 2001 12:49 PM
  Subject: Cleaning intake manifolds

  Dear List,

  I'm doing an engine replacement on my '86 Vanagon.  
  The intake manifold pipes (the four "spider legs") have a 
  LOT of carbon in them.  Most is in the bend (center of 
  pipes) where it's hard to get at.  

  Any tips on getting this stuff out, short of a couple
  of hours with a little wire brush?

  TIA,

  Steve

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