Sentences with phrase «top dead center»

The engine must be at top dead center where both intake and exhaust valves are closed (compression stroke).

Is it possible for the piston to be all the way up but you're still not at top dead center?

First, everyone who said that the braking effect comes from the compression stroke is wrong... the air in the cylinder is compressed which takes energy, yet after top dead center acts as a spring and helps force the piston back down, returning the exact same force as was put into it in the first place.

If the intake valves normally open at 10 degrees before top dead center (TDC) and close at 190 degrees after TDC, the total duration is 200 degrees.

This would then result in combustion being further along as the piston passed top dead center as compared to 87 octane fuel.

Its not just a simple push, its a push over a particular time, When your piston is at perfect top dead center or at perfect bottom center, no amount of pushing move the piston.

The words you want to remember while setting the timing is top dead center ready to fire.You want both valves closed.They make a tool that inserts in the spark plug hole that whistles as you rotate the crank to alert you that both valves are closed.Or put your thumb on it and feel the pressure.You want to be TDC on the compression stroke which is 180 degrees opposite of TDC of the exhaust stroke.Both TDC will read 0 on the crank timing ring.

It's very important to ensure that you have the cylinder that you are testing at TDCC (Top Dead Center Compression).

A red mark on the wheel denotes top dead center.

The pressure chart is on slide # 18, and you can see that the max PRESSURE is around 20 degrees after Top Dead Center (TDC).

The recommended procedure is to set the camshaft and the crankshaft at top dead center (TDC) and then install the belt matching the appropriate marks on the belt to the TDC marks.

It basically gets down pulling a spark plug, getting that piston to Top Dead Center (TDC), threading the tester into the spark plug hole, hooking up compressed air (at a minimum pressure), bringing the cylinder pressure up to a set amount, and...

Just before TDC (top dead center) the spark plug has an electric charge jump across it's center and ground electrodes igniting the air fuel mixture in a process called combustion.

Each cylinder is tested by pushing air into the spark plug hole when the cylinder is Top Dead Center (TDC) so all the valves are fully closed - Is air squeezing past the rings and coming out the PCV valve?

Rotate the crankshaft clockwise around until you are at Top Dead Center (TDC) for cylinder # 1 (on the SBC and Chevy V6, this will be at the 0 timing mark).

I've seen on forums where some posters suggest to question - askers that they have their timing «180 out», but it seems to me that is very unlikely to happen if you're at top dead center?

Top dead center (TDC) happens between two of these cycles: between Compression and Combustion, then again between Exhaust and Intake.

It basically gets down pulling a spark plug, getting that piston to Top Dead Center (TDC), threading the tester into the spark plug hole, hooking up compressed air (at a minimum pressure), bringing the cylinder pressure up to a set amount, and then watching how quickly it comes down again, and if it settles anywhere.

The corresponding motion on the other side of the plate lowers or raises the lower connection point of the upper connecting rod, and therefore lowers or raises the top dead center position of the piston, effectively changing the compression ratio.

This allowed the JECS throttle - body injection system to identify cylinder # 1 top dead center (TDC).

The tactile steering wheel now includes a red marker to indicate «top dead center,» another feature derived directly from racing.

In principal, the engine changes compression ratio simply by altering where the cylinder's top dead center is.

It reverses to the maximum values in the opposite direction just before the top dead center (TDC).

In addition, it avoids the longer residence time at TDC (top dead center), which seems a better way to reduce the peak temperature.