Timing Chain (Was Re: Between a Rock and a Rock: Repair or Replace Engine?)

[Steve Sears]

Mohammed,
Maybe because, if it breaks, they'll be removing the engine anyways (to bin
it). ;-)  The "failure bell curve" is shifted way far into the future
compared to the belts.  Those chains are pretty substantial - not like your
ol' bike chain.  I remember how suprised I was when, while looking at a
Honka CRV for my wife, the salesman told me how it has a chain and not a
belt.  It seems like the rubber/steel timing belt has become like the
pressure accumulator (aka "bomb") system - it just took longer to realize
that it's not a good idea to be so close to catastrophic failure.
I agree with Scott - using a chain means that Audi doesn't have to own up to
Owner's Manual misprints and angry customers - not that they don't have to
lean on the plunger as hard as they used to to get the engine in.  2" is
nothing in the age of land yachts.
Cheers!
Steve Sears
1987 Audi 5kTQ - with a high tech pressure accumulator...what?
1980 Audi 5k - with a high tech 5 cylin...aw, c'mon
1962 and '64 Auto Union DKW Junior deLuxes - don't get me started.
(SPAM Blocker NOTE: Remove SHOES to reply)
----- Original Message ----- >
> From: "Bhatti, Mohammed" <Mohammed.Bhatti at si-intl.com>
> Subject: Timing Chain (Was Re: Between a Rock and a Rock: Repair or
> Replace Engine?)
> To: <quattro at audifans.com>
> Cc: SuffolkD at aol.com
> Message-ID:
> <53325189A027E54A8ED72051B276D8BD323DF0 at va03ex01.si.siroot.com>
> Content-Type: text/plain; charset="utf-8"
>
> Ok, just thinking out aloud here, but why can't you have a timing chain in
front of the engine.  Why the back where, if it breaks, and I believe they
do, it would mean removing the engine to replace.
>
> mohammed
> 97 A4 1.8tqa
>
> >>>>>>>>>>>>>>>>>>>>>
> Check out the NEWSET brochure for the S4 and V8 4.2 engines:
> S4 catalogue, Page 20:
>  "By replacing the belt in the front with a chain that drives the dual
> overhead camshafts from the rear of the engine, we were able to trim off
two inches
> off our potent 4.2 liter V8........."
> Let me rewrite that: Chain means less claims and warranty expenditures for
> AOA.
> Cubic inches are cheaper than turbos..................Chains are BETTER
than
> belts.
> -Scott by BOSTON
> <<<<<<<<<<<<<<<<<<<<<<<<