|
These are a set of floating second valve behind the main original valve...when the piston starts up during the compression stroke the pressure closes this free valve causing a earlier closing that the cam is programed for and this makes higher compression and lower the torque curve, BUT at higher RPMs the reaction time is cut so at one point things are too fast so your stock cam timing takes over.
It gives you a variable valve timing: a very small low RPM timing and then as you RPMs rise a power cam (stock) or even a performance cam.
I do not know how well these ware, nor if carbon build up will mess with them.
BUT I plan on trying them IF I can find (the) a company making them.
There have been patterns issued for versions of these over some 50 years.
Rich
|