use a piece of modeling clay,( you can get any wal-mart craft section). place on top of the intake valve relief . place the head on the motor with a few bolts and with a week spring and your valve in place, compress the valve and measure the clearance with a dial indicator and this should tell you thickness of the head gasket you need.
To set the valve clearance on a Yamaha Big Bear 350, first, ensure the engine is cold and then remove the valve cover. Rotate the engine to set the piston at top dead center (TDC) on the compression stroke for the cylinder you are adjusting. Use a feeler gauge to measure the clearance between the valve stem and the rocker arm, adjusting the clearance by loosening the lock nut and turning the adjustment screw as needed. Finally, recheck the clearance and reassemble the valve cover.
The valve clearance for a 2002 Honda Rancher 350 is typically set to 0.004 inches (0.1 mm) for both the intake and exhaust valves when the engine is cold. It's important to check and adjust the clearance periodically to ensure optimal engine performance. Always refer to the owner's manual for specific instructions and specifications.
The Valve clearance for a 1993 TRX Honda Fourtrax is 0.03 on a feeler gauge. 0.03 -intake 0.03-exhaust
Type your answer here... Burnt intake or exhaust valve, hole in piston, broken piston rings, bad head gasket, valve spring broken.
I wouldn't be so worried about the heads as the pistons. Make sure you have enough clearance so that an open valve won't hit a piston.
The valve clearance for a 1999 Yamaha Big Bear 350 is typically set at 0.10 mm (0.004 inches) for both the intake and exhaust valves when the engine is cold. It's important to check the owner's manual or service manual for specific guidelines, as clearances can vary slightly based on the model and engine condition. Regular maintenance of the valve clearance is essential for optimal engine performance.
.15mm or .006 inches when the engine is cold. Check out my bio page if you need help with the procedure.
.003 on intake and exhaust
Valve guides and/or valve seals can be worn. Allows oil to get into the combustion chamber.Oil consumption and smoking are signs of either bad piston rings or bad valve guides/valve seals.A compression check on each cylinder can help determine which.
it should de-stroke it to something around a 327. it will fit but be sure to check for crank to piston and piston to head cylinder top clearance to ensure you don't run into engine detonation. ummm no 305 and 350 have same stroke a 400 crank would make it a 334... same main and rod journals also stroke is 3.48
The valve clearance for a 1987 Yamaha Moto 4 350 quad is typically set at 0.10 mm (0.004 inches) for both the intake and exhaust valves. It's essential to check the owner's manual or service manual for specific specifications and adjustments, as tolerances may vary slightly based on the model or engine condition. Regular maintenance and checking of valve clearances can help ensure optimal engine performance.
check the piston rings but that a typical thing any 350 dose check the piston rings but that a typical thing any 350 dose