Marin S4

Have you ever seen the cam alignment tool used when changing the timing belts? Would it be possible to make or modify one so as to be able to change the cam timing by 5 degrees. I have had very good results when retarding the cam timing on motorcycles. It will shift peak torque power up by 200-400 RPM. I have seen that the Vishnu people have done this on the EVO with great results.

I would like to see the tool have a degree wheel of some sorts to precisly measure changes.

Any takers???

Imolavirus@BuehnEngineering

is it not possible to use a standard timing tool that non-s4ers use to adjust degrees of timing?

Marin S4

to understand.

Bramell-EVOvert

Why dont you take a pic of the tool if you can...i am sure troy or myself can make it.

Andy Hedin

<img src="http://www.sirtools.com/vw6028.jpg">
<i><b>Cam Securing Bar</b>
Cam Securing Bar for Audi V6
Sir Tool VA 6028
Needed for the crucial task of securing both engine banks, cam shafts at T.D.C. when replacing the timing belt. Used in conjunction with tool # VA 6025, T.D.C. Lock Bolt. Applicable: Audi V6, 2.7L Twin Turbo engines with 5 valves per cylinder.</i>

VonK :: Retired

How about modding a Forge BPV to <a href="https://forums.audiworld.com/s4/msgs/1256017.phtml">this</a>. Troy was going to look into it last May. Never heard back from him.

I have groove specs. Email me if interested. Thanks.

xr4tic

5 degrees might be a bit much though.

You could build a circular plate, with different bolt holes that give different degree offsets, Advance on one side, retard on the other.

Bolt the plate to the cam, then the locking tool to the plate.

flame monkey@PEBFATS

waste if time. just run the 710N

MarkS4

Very easy to do. I will try and post a pic showing a potential solution

MarkS4

Altering the base timing will be known by the ECU given the two (2) hall effect sensors G163 and G40 located on the exhaust cams. These sensors coupled with a signal from the crank position sensor G28 all have to relate to within (+/- 6 degrees)IIRC. Also altering the exhaust cam in terms of timing might not yield the expected results in intake cam timing because the cam chain tensioner mechanism will probably compensate somehow.

Gut feeling is that the ECU will throw a DTC regarding "cam pos sensor implausible signal" or
"17748-P1340 Crankshaft-/Camshaft Pos.Sens.Signals Out of Sequence"

Anyway since the cam gears ends are cut in a way that are essentially keyed, one could make a new hall rotor that has the specific amount of advanced/retarded degrees.

I will try and come up with some ideas for both applications.

But after all the only way to really find out if it will work is to do it!