[Vwdiesel] VW TD Parts on e-Bay

[Nate Wall]

The aluminum alloy is different on the TD head. An
engineering paper referrs to it as "Sodium injected",
I also know the TD head's alloy has more of a silver
luster to it than the NA one. Don't know if its
stronger of dissipatres heat better, ot both. Exhaust
(and maybe the intake) valve seats are a different,
harder, alloy, and the exhaust valves are different
("Plasma Coated" according to the same paper). The
pre-chamber inserts are different too, but I don't
know how.

I think with the advent of the hydraulic head, the
same head was used on both the NA and TD motors.

--Nate

--- "Tyler \"Casioqv\" Backman" <casioqv at usermail.com>
wrote:
> What is the difference between the two heads?
> Apparently, on the 2.4l
> engine, both the turbo and non-turbo heads are the
> same, but with
> different camshafts (and the turbo head has a hole
> drilled for coolant
> water to supply oil to water oil cooler).
>
> Nate Wall wrote:
> > The seller mentiones he does not know if its the
> > original head. Anyone interested in the true TD
> head
> > (the mechanical lifter heads came both in TD and
> NA
> > part numbers) sould e-mail the guy and ask the
> part
> > number on the head. The head number ending in "M"
> is
> > the NA head, the number ending in "N" is the true
> TD
> > mechanical lifter head.
> >
> > --Nate
>
> _______________________________________________
> vwdiesel mailing list
> vwdiesel at vwfans.com
> http://www.audifans.com/mailman/listinfo/vwdiesel


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