40 40
It is between the valve top and rocker For 4ba1 it is 0.40mm
Engine needs to be cold when performing overhead adjustment. Spencer's is .16" intake and exhaust valves closed.
valve clearance for Isuzu 4ba1 engine is 17.00.
To adjust the tappets on an Isuzu 4BE1 engine, first ensure the engine is cold. Remove the valve cover to access the rocker arms. Rotate the crankshaft to align the timing mark at the TDC (top dead center) position for the cylinder being adjusted, and use a feeler gauge to check the clearance between the rocker arm and the valve stem. If adjustments are needed, loosen the lock nut and turn the adjusting screw until the correct clearance is achieved, then tighten the lock nut and recheck the clearance before reassembling the valve cover.
Valve clearance 12pc1
The valve clearance for the Isuzu 6HE1 engine is typically set at 0.20 mm (0.008 inches) for both intake and exhaust valves when the engine is cold. Proper valve clearance is crucial for optimal engine performance and to prevent valve damage. It's important to consult the specific service manual for precise specifications and adjustment procedures based on the engine's application.
Valve Clearance (Cold) Cold intake-0.15mm(0.006)" Exhaust-0.25mm(0.10)" Idle Speed- (900)rpm
.5mm
0.015"
12
19mm
The valve clearance for the Isuzu 4HF1 engine is typically set at 0.20 mm (0.008 inches) for both intake and exhaust valves when the engine is cold. It's essential to check the specifications in the service manual for your specific model, as clearances can vary slightly based on production year or modifications. Regular maintenance and adjustment of valve clearance can help ensure optimal engine performance.