do valves normally get tighter with mileage? i checked my valves and number one intake was .020 its suppose to be between .028 +-.003. is this typical?

 

Yep, they can go either way but they usually tighten.

I'm due to check on mine too

 

what is the effects of it ?

 

intake spec is .20mm +-.03

exhaust spec is .28mm +-.03

if your intake side is .20 then you're right on target.

 

well thats kinda of good news. i wrote it down wrong when i was checkin it and only checked 1 and 3 intakes both were .020. but got aggravated cuz i thought they were bad and put it back together. didnt check any other since i was gonna take it to my buddies shop to adjust.