I have a 05 camry with 2.4 engine. Engine was recently swapped with a parts car engine. The upper oil pans needed swapped which means the balance shafts were swapped. I originally retimed them via timing marks and TDC. There is a bad vibration and after research on the toyota forums it needed to…

It’s exactly what it says; on a clock it would be the 6 o’clock position.

The DEAD CENTER designation is to make it clear that the piston will be at the top for a significant sweep of the crankshaft. Relative bore/stroke and rod length result in varying the dwell. TDC is the mid point of crankshaft sweep while the piston remains at the top.

Even if the piston isn’t moving, of it’s at its uppermost point of travel it’s at top dead center. If it’s at the bottommost point of its travel it’s at the bottom dead center. If it’s in the middle, it’s just in the middle.

OP writes … Top Dead Center is when it is aligned on the top side with the piston closest to the head and Bottom Dead Center is when it is aligned on the bottom and the piston is furthest from the head. That’s correct. Each piston reaches TDC at different times. When the manual says align the cra…

If you have your shaft out of phase…it is now moving IN TANDEM…with the pistons. No wonder she vibes. Like everyone said…TDC…is Top Dead Center…BDC…Bottom Dead Center…basic basic

I got it all figured out on the car. The fact is the balance shafts have a 2:1 turn ratio and it will not matter if set at TDC or BDC. When I assembled the engine, I must have had the engine 90* out (required to time the oil pump) when I set the balance shafts on. Simple fix of dropping the pan a…

SWEET… You basically had a handle on it the entire time tho…

What is Bottom Dead Center (BDC)?

Maintenance/Repairs

texases April 15, 2016, 7:20pm 3

BDC and TDC each occur once each revolution, when the piston is either at the Top or Bottom of its stroke and the connecting rod big end is Centered in the bore of that cylinder.

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What is Bottom Dead Center (BDC)?

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