Originally posted by DemonSVT:
Originally posted by kinger:
Sooooo adjustable cam gears do just that adjust your cam into different durations, etc? How does the timing chain react? Sorry guys I'm stupid here today.


It changes (retards/advances) the valve open & closing points in relation to everything else. The duration would stay to same as the cam lobes do not change.

"Very basically" it raises or lowers your powerband. Advancing (making then open & close sooner) would generate better low & midrange torque numbers while sacrificing up top (I.E. NOT what to do on our engine!)
Retarding (later valve action) them would move everything up the power band and generate better HP numbers. Exactly what a well breathing, high compression engine needs!

Being as there are both an intake & an exhaust cam the phasing of the cams can come into play as a potential power enhancer.
For instance really tweaking the exhaust cams to make up for the abysmally small exhaust valves.
Changing the valve overlap (ahem FI'd folks)

However like most things there is always a subsequent loss for your gain. Nothing is ever truly free. It's just figuring out what losses and gains are best suited to the engine design and purpose.

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As for the timing chain. It sees nothing different. It wraps around the gear sprocket and turns it just like normal.



Thanks Demon exactly what I needed

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