OHV valve gap is 0.006" There is a YouTube video on the adjustment procedure and I will put the link below.
what is the valve gap for a 1999 Yamaha woverine
For the intake valve, the gap is 0.08 ± 0.02 mm. For the exhaust valve, the gap is 0.11 ± 0.02 mm.
If it's an 8 valve engine and not the 16 valve: Bosch Spark plugs have a gap of 0.8mm NGK spark plugs need a gap of 0.9mm 16 Valve engines have a 0.9mm gap on each type of spark plug
The exhaust valve gets hotter than the intake valve.
The valve gap has to be checked when the rocker arm is on the "bottom" of the cam eccentric. This means that the cam has to be rotated as you check each valve, to get a correct reading. There can be variation in the valve gap due to uneven wear, but in a well maintained vehicle, this should be a very small variance.
Because the gap between the rocker and the valve is too big and what you hear is the rocker slapping the valve stem. Get yourself a manual for your car and find the valve gap so you can adjust them properly.
Remove cylinder head, Remove valve side cover, Remove valve springs to free valves, Measure gap between end of valve and cam follower, while pushing valve onto seat with finger, To make gap larger, pull valve out and grind some metal from end with bench grinder, (carefull here), When gap is correct and valve seats without turning under finger, Reassemble.
The 1.8 20 valve Turbo gap is 0.032
it depends on which gap you are measuring, spark plug gap should be .6-.7mm, intake valve gap is .05mm exhaust is .05mm, point gap is .3-.4mm
ook in the book
The correct valve clearence (lash, gap) for this engine is: intake & exhaust valve: 0.004" - 0.008" (0.1-0.2mm) These should be adjusted on a cold engine with the piston 1/4" (6mm) past top dead center.
Valve lash is the gap between the rocker arm and valve stem on cylinder heads. Proper adjustment ensures that a vehicle operates at peak performance.