[Vwdiesel] homemade valve compressor
hillsgrove at adelphia.net
Sun Nov 28 09:38:30 EST 2004
With all this talk of valve guides, it would be nice to hear from Nate.
Did he abandon us when he sold his TD?
> > > Drilling and maching guides is cast iron work (domestic V-8's
> > and such).
> > > Most aluminum have silicon bronze or phosphorous bronze (I
> > think)
> > > guides, which are generally press in and out. Cast ones neeed
> > drilled,
> > > pressed, shaped and reamed. If you have the tool that fits all
> > the way
> > > down the guide, when you press or drive then in, then reaming
> > very
> > > well may not be needed as the tool holds the dimension.
> > Otherwise
> > > you need an 8mm reamer. I've found that you use a good
> > lubricating
> > > oil for the intakes and something very light or dry on the
> > exhausts.
> > > You want the exhaust guides a tad more loose than the intakes to
> > > start with.
> > > I can see why you'd test with a new valve. The exhaust stems
> > > wear. Most that I've checked were tapered to .003" of wear.
> > Not
> > > much of a test of the guide with a valve like that!
> > > Loren
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