People set them to 0 TDC so they could run regular octane fuel.

I remember reading somewhere that setting the timing on a Jetta with a
knock sensor to 12 BTDC instead of 6BTDC was good for 6hp

With
that being said... with a heavy vehicle like the Vanagon... you arnt'
going to notice 5hp - that's less than the difference of having or not
having a mild head wind!

I ran mine at 3 BTDC and had no issues
at 87 octane fuel - mind you you can really hear an engine when it knocks
most of the time.

David Marshall
VW Adventure Driver and
BMW Adventure Rider
 
http://www.hasenwerk.ca

On Mon,
November 24, 2008 18:12, Chris S wrote:
> 
> Before I
raise anyone's blood pressure, let me explain that 2.1l WBX
>
DJ-code (112hp) calls for timing to be set at 10 degrees BTDC.
>

> When I bought the engine it came with timing set at 0 degrees,
or TDC.
>  The idle is OK, the power is good.  I set timing to
factory spec 10
> BTDC, and idle is lumpy, but I don't see any
more power.  Throttle
> response seems the same and my timed 30-50
and 50-70 are identical
> under nearly identical conditions (ok,
it is a little cooler tonight).
> 
> Theoretically, which
is better, 0 or 10 BTDC?
> 
> --
> Chris S.
> Disclaimer: "Death and serious injury may occur"
> 
>
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