How to measure intake and exhaust valve clearances?
(1) Set the arrow mark on camshaft sprocket to position shown in the figure, and then measure the #2 cylinder exhaust valve and #3 cylinder in- take valve clearances. (2) Set the arrow mark on camshaft sprocket to position shown in the figure, and then measure the #2 cylinder intake valve and #4 cylinder ex- haust valve clearances.
How do you do a valve clearance inspection?
A: INSPECTION Inspection and adjustment of the valve clearance should be performed while engine is cold. 1) Set the vehicle on a lift. 2) Disconnect the ground cable from battery. 3) Remove the air intake duct. <Ref. to IN(H4DOTC)-8, REMOVAL, Air Intake Duct.> 4) Remove the bolts which secure the timing belt cover (RH). 5) Lift-up the vehicle.
Is the intake valve clearance too tight on a Polaris?
You might have a valve seat that has been pounded into the head a bit from running the valves so tight, for so long. Was the quad hard to start when it was cold? as polaris bob stated above, a guy we ride with had that problem with the seats. I think he said the dealer told him some of the 05’s had seats that were too soft.
What to do if your intake valve is too tight?
Don’t grind the stock valves when the time comes. Spend the money and buy the stainless kibble white valves and this problem will pretty much go away. The stock valves are only hard faced. If you grind away the hard facing they will cup in an hour or so and you will be doing it all over again.
How to check intake and exhaust valve clearances?
Be sure to check the clearance on each of the intake and exhaust valves. Remember, the clearance spec on the exhaust valves is different than the intake, so you’ll need to select different feelers. Now, set the #3 piston at TDC by rotating the marks on the cam gears 90 degrees clockwise.
How do you adjust the clearance on a Honda exhaust valve?
Once you get this feeling down, you can use the Honda valve adjustment tool (or the like) to hold the adjusting screw while torqueing the locknut. Be sure to check the clearance on each of the intake and exhaust valves. Remember, the clearance spec on the exhaust valves is different than the intake, so you’ll need to select different feelers.
How to adjust intake valve clearance on Honda K20A2?
Insert the appropriate thickness of feeler gauge between the valve stem and adjusting screw for cylinder #1. (I find it easier to remove the feelers from the holder if possible, as shown in the above picture.) For the intake valve to open as much as possible on the K20A2, you would use the 0.21mm feeler.
Where are the intake and exhaust valves located?
The intake valves will be closest to the intake manifold, the exhaust valves closest to the exhaust manifold. In the picture below, the green arrow indicates the valve adjusting screw, the red arrow indicates the locknut for the screw, and the blue indicates the position for the feeler gauge (between the valve stem and adjusting screw).
How big of a valve clearance do I Need?
Valve clearance: Intake: 0.20 +0.04. -0.06 mm (0.0079. +0.0016. -0.024 in) Exhaust: 0.35 0.05 mm (0.0138 0.0020 in) NOTE: If the measured value is not within specification, take notes of the value in order to adjust the valve clearance later on.
How does valve clearance affect the engine performance?
More gaps will be remaining, and it can’t lock the valve somewhat, which may burn the other parts while having a combustion process. And on the other hand, if you fit a small size valve, there will be more gaps, which couldn’t suit the engine. Keep a perfect gap to allow the air fuel and restrict the extra ones.
How to calculate valve lifter thickness for a camshaft?
Valve lifter thickness calculation: t = t1 + (C1 – C2) t = Valve lifter thickness to be replaced t1 = Removed valve lifter thickness C1 = Measured valve clearance C2 = Standard valve clearance: Intake : 0.30 mm (0.012 in) Exhaust : 0.33 mm (0.013 in)
What is the clearance of an exhaust valve?
If deviated from the standard value, make note for the valve clearance. Standard value: Intake valve 0.20 ± 0.03 mm (0.008 ± 0.0012 inch) Exhaust valve 0.30 ± 0.03 mm (0.012 ± 0.0012 inch) 5. Turn the crankshaft clockwise 360 degrees, and put the timing mark on the exhaust camshaft sprocket in position shown in Figure.
What is the clearance for the intake valve?
Rotate the engine to 10 degrees after top dead center on the intake stroke. Repeat the procedure with the intake valve and compute the clearance. For this valve, the clearance measured .219-inch.
How big is the intake and exhaust valve?
Standard value: Intake valve 0.20 ± 0.03 mm (0.008 ± 0.0012 inch) Exhaust valve 0.30 ± 0.03 mm (0.012 ± 0.0012 inch) 5. Turn the crankshaft clockwise 360 degrees, and put the timing mark on the exhaust camshaft sprocket in position shown in Figure. Therefore, No. 4 cylinder goes to the compression top dead center.
What should the exhaust clearance be on a SBC?
Now subtract the difference in the gasket thicknesses and you should have an accurate measurement of the piston-to-valve clearance. For this example on a turbocharged SBC, the exhaust clearance was .220-inch. Rotate the engine to 10 degrees after top dead center on the intake stroke.