So, what's the philosophy behind using a timing belt instead of timing chain?
08-09-2007, 03:19 PM
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Disagree. 24v VR6 chain design is great. You thinking 12v VR6? [more]
The 24v VR6 design is great. This design hasn't been an issue at all and it's been in the field for five plus years now. Having been in the VW/Audi repair industry during that time, I've never seen a problem with the 24v VR6 chain guides or tensioners. It's just not an issue at all.
The earlier first generation 12v VR6 chain setup had some issues. The upper chain tensioner would fail due delamination of the wear plate to the backing plate. The lower guides would become brittle and break apart too. That's old news from '92-'99 era though. They changed the tensioner design in the Mk4 chassis to a single piece plastic design that resolved part of the problem.
Like I said, never ever saw a problem in the '02.5+ 24v versions.
The earlier first generation 12v VR6 chain setup had some issues. The upper chain tensioner would fail due delamination of the wear plate to the backing plate. The lower guides would become brittle and break apart too. That's old news from '92-'99 era though. They changed the tensioner design in the Mk4 chassis to a single piece plastic design that resolved part of the problem.
Like I said, never ever saw a problem in the '02.5+ 24v versions.
08-09-2007, 05:59 PM
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The early 12vs didn't have a problem till years down the line
later mk4 12vs are still having problems.
number of 24vs let alone number of them with high mileage is not that great. In 3+ years we will see.
I'm in the biz too so I've seen it all first hand.
number of 24vs let alone number of them with high mileage is not that great. In 3+ years we will see.
I'm in the biz too so I've seen it all first hand.
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