No. Top dead center on the #1 piston is usually used for timing purposes. The crank shaft and the cam shaft are aligned using the timing chain. Proper timing is achieved manually (by turning the distributor) or by the cars computer. If you have an engine that has a distributor remove the cap and mark the rotor buttons position. Also mark the position of the distributor in reference to a point on the engine itself. It can now be removed and replaced in it's original position - but a timing light is always a good idea for setting the timing. Other than removing the distributor itself other components can be disconnected and the intake can be removed and the gasket changed. Replace everything in the reverse order you took them apart. Good luck with your project.
The intake manifold gasket is a common problem with the 90 degree GM engines. Replacing it requires you to bring the #1 cylinder to top dead center, then you have to very carefully scrape away the gasket material, being sure not to get any into the intake manifold itself. And you're going to have to look up the torque specs for reassembly. But, the short answer is that you're going to have to replace the gasket. Numerous resources are available online which go into detail on how to do this, or you can get a Chilton or Haynes service manual for that vehicle.
the air mixture i.e air and the fuel mixture entering the clyinder during the piston moving from top dead center to bottom dead center this is known as intake stroke
bring #1 piston to top dead center where both intake & exahust valves are in closed position
IVC is Intake Valve Closing, is the crank degrees when the intake valve is closed, after TDC(top dead center).
it is just below the intake manifold on the REAR of the engine. Just about dead center
Remove motor from bike. Take head off the motor replace gasket .If it has an over head cam make sure you put motor to top dead center. Then take out cam and tie chain up so it will no fall down. If it is liquid cooled make sure you drain it before you take the motor out.
To find the top dead center on a 2000 Jetta 1.8T, remove the engine splash guard inside the wheel well on the right side. Locate the main crankshaft pulley nut and see the intake manifold. That is the top dead center. ?æ?æ
Rotate the crank pulley at the bottom of the engine until the dimple is at top dead center. Use a second socket set to rotate the intake and exhaust cam sprockets so that the "I" (intake) is at the top dead center on the intake cam, and "E" (Exhaust) is at the top dead center of the exhaust cam. Place the timing belt on the engine. You may need a tool or helper to keep the crank pulley in place while you apply the timing belt. Test your placement by rotating the crank pulley two full rotations. Verify that the intake and exhaust cams return to the original positions - I and E at the top of the cam gears.
take of driver side valve cover, so you can see the rocker arms move. Turn the engine while watching the intake valve rocker for number one cylinder move. When the intake valve has just closed you should be close to the balancers mark for top dead center. That is the top dead center mark you will be looking for when putting distributer and wires back on.
The speed of the air as it rushes in allows for the air to continue rushing in for a little while after bdc.
With the engine at TOP DEAD CENTER (TDC) Adjust the exhuast valve to .007 and the intake to .005.
When #1 piston is at its upper most position in the cylinder bore and both intake and exhaust valves are closed