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RE: Timing chain
Posted by John Cooper (more from John Cooper) on Wed, 29 Sep 1999 09:08:15
In Reply to: Timing chain, Dan Aldrich, Mon, 27 Sep 1999 20:50:29 
> My '80 900GLE's timing chain lasted 177,000 miles. If it was 
> my car, I would get a second opinion. I would also want to know if the
> tensioner has been adjusted to its limit.

The early engines had a double row chain; much stronger than the later ones.
And they still broke.  Adjusting the guide ramp (not tensioner, which was
self adjusting) could prolong the life.  When it gets loose and starts to
rattle is when it'll break.

I'm trying to remember whether there was an easily adjustable ramp on the
later ones.  Seems to me that the tensioner, which was of a different
design, had more range, but they would still break if not fixed when they
started to make noise.  And the results were not pretty.  
 
> >I'm bringing in my '92 900 in this week to Camelback SAAB 
> here in Phoenix.
 
I'm not sure what the 16 valve engines require.  I'll bet that if ignored,
the chains will break and the results will be very undesireable.  This may
be the Dealer's simplistic way of dealing with it.  On the other hand, I've
known several neglected 8 valve single row motors that didn't make it much
past 100K.

Your milreage may vary.

John
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