valve clearance can have an effect on valve timing, why?
2007-10-01 06:24:07 · 3 answers · asked by Anonymous in Cars & Transportation ➔ Maintenance & Repairs
http://en.wikipedia.org/wiki/Four-stroke_cycle
2007-10-01 06:42:29 · answer #1 · answered by Mr. KnowItAll 7 · 0⤊ 0⤋
Well, the clearance distance between the cam/lifter and the valve takes time to travel, so in that sense it can have a very slight effect on valve timing. More critical is that the clearance is not too tight, holding the valve slightly open (you burn the valve face and seat, run poorly) or too loose, in which case you'll notice a clatter as the components "get a run at each other", resulting in damage as they come together too violently, also a loss of power.
2007-10-01 13:37:25 · answer #2 · answered by vikesfan.rm 3 · 0⤊ 0⤋
Unlike hydraulic lifters that are adjustment free, the solid lifter has to be adjusted to get a specific air gap when the valve is closed. If the air gap(clearance) is too large the valve will not start to open at the correct moment, will not open as deep as required, & will close too early. If the clearance is too little the valve will open too early, stay open longer, & close too late. If the you have no gap(clearance) the valve will not close and the push rods & rockers & even piston tops may be damaged.
2007-10-01 13:46:31 · answer #3 · answered by flea 5 · 0⤊ 0⤋