Advance timing dowels

Currently doing the headgasket on the zr and tempted to install the timing dowels while the pulleys are off

Only have the standard vvc inlet and exhaust cam not a piper but would I still see an improvement with the 4 degree dowels? Think I remember hearing that the vvc system is about 6 degrees retarded



Also can the original dowels be removed and refitted if I find it not working out or are they a take out and wont go back in kind of deal?

from the last news http://ift.tt/1iHujrV

via IFTTT