Top Dead Center #1
Forum rules
If you need help logging in, or have question about how something works, use the Support forum located here Support Forum
Complete set of Forum Rules Forum Rules
If you need help logging in, or have question about how something works, use the Support forum located here Support Forum
Complete set of Forum Rules Forum Rules
-
ChuckLebeda
Topic author - Posts: 27
- Joined: Thu Jan 24, 2019 4:09 pm
- First Name: Chuck
- Last Name: Lebeda
- * REQUIRED* Type and Year of Model Ts owned: 1919 Centerdoor
- Location: South Dakota
Top Dead Center #1
When the timing mark on the camshaft gear is in line with the 'FORD' inscription on one tooth of the timing gear; is this Top Dead Center for piston #1? When mine are inline it still appears as #1 piston still has about 1/8 to 1/4 inch to reach top of head. Gear teeth have to move about 5 more teeth for piston to reach top of head.
-
Kevin Pharis
- Posts: 1360
- Joined: Thu Jan 10, 2019 3:54 pm
- First Name: Kevin
- Last Name: Pharis
- Location: Sacramento CA
Re: Top Dead Center #1
This is not an optical dillusion... the timing marks are nothing more than that. TDC is best found with a dial indicator on the piston, or also the crank pin is a decent indicator
-
ChuckLebeda
Topic author - Posts: 27
- Joined: Thu Jan 24, 2019 4:09 pm
- First Name: Chuck
- Last Name: Lebeda
- * REQUIRED* Type and Year of Model Ts owned: 1919 Centerdoor
- Location: South Dakota
-
Norman Kling
- Posts: 4092
- Joined: Tue Jan 08, 2019 1:39 pm
- First Name: Norman
- Last Name: Kling
- Location: Alpine California
Re: Top Dead Center #1
There are two "top dead centers" for each cylinder. The crankshaft makes two rotations for each turn of the camshaft and also there are two positions in which the camshaft gear can be installed on the camshaft. But it doesn't make any difference which position the gears are in relation to the camshaft. Only thing which matters is that the gears are installed in the position where the two marks are aligned. Then when you go to set the timing, you turn the crankshaft to the point where both valves are closed and the piston has just started down on the intake stroke.
Norm
Norm