[Vwdiesel] NA exhaust valves for a TD head?
swright at zuiko.sls.bc.ca
Thu Apr 7 01:28:11 EDT 2005
On 7 Apr 2005 at 0:46, LBaird119 at aol.com <LBaird119 at aol.com> wrote:
> Talking about those bearings on the intermediate shaft ? ---I do NOT like the
> looks. Check things out real good to find out what went wrong.
> They're old, PERIOD! It's not only a common occurance it's why
> replacing those bearings on a rebuild is MANDATORY. Probably
> something to do with being a circular bearing and thermal expansion
> and contraction cycles. Regardless, after a couple hundred thousand
> miles most of them look like this. Of course that's generally after about 15 to
> 20 years too so it's just as likely that time is a factor also.
Two things of note - I've yet to hear of a failed i/s bearing on a gas engine, and I've
seen lots with well over 300k kms. Also, my TD int shaft is actually a gas shaft, even
though EKTA lists a diesel version. Mine is 049, instead of 068, and has the cam
lobe for mechanical fuel pump (I think they all do though). Maybe the 068 shaft only
exists on paper?
> > The way I remember it , the exhaust valve in the TDs are a special alloy and
> > coated. NOT like NA valves. So at least get the turbo valves --non sodium.
> I recall them being coated but not any special alloy. Thing is when I
> put together the NEW head for Dad's pu, there were NO listings for
> a TD exhaust valve. Only the INTAKES were listed as NA or TD.
> Couldn't see anything really special with them.
Autohausaz.com and busdepot.com both list separate parts for them now, but intake
at the same. I'm just hoping I don't need them now...
'85 Jetta D
'88 Westy 2.1L, soon to be 1.6TD 5 speed
'82 Diesel Westy
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