<font size="2" face="Verdana, Arial">The cam phasing sprockets have been off and on the market for a while now. But I know very few, if any folks that are actually utilizing them. Personally, I think it would be a cost effective solution (albeit with some flaws that are ancillary). The VW ones, were not very expensive, but not a lot of them were ever sold. And it wasn't for a lack of word of mouth, just simply lack of interest.Originally posted by JohnsZX2SR:
There is another way to provide variable cam timing.
Over 30 years ago Mercedes introduced a centrifugal timing mechanism on their twin cam inline 6. I don't remember if it was on the intake or exhaust side, but I do remember that it retarded the cam with increased rpm.
A mechanically adjustable centrifugal retard mechanism would be a simple way to vary cam timing without having to modify the head or involve the PCM. You could use one on the intake of a VCT engine or use intake only or two mechanisms on the Focus Zetec.
<font size="2" face="Verdana, Arial">Originally posted by EggYolkBill:
Click the link in usdm's signature. Then click contact and select "I want smart valves for" in the subject. Then specify Ford Focus ZX3(or any other Zetec model) in the message field.