How To Measure Garage Door Springs. There are two ways to get the correct torsion springs for a garage door. Inside diameter (90% of doors have a 2.0 inside diameter) 3.
Measure the overall length and. Step 1 determine springs id (inside diameter) Measure the length of 10 coils and then measure the length of 20 coils.
Step 1 determine springs id (inside diameter)
Step 1 determine springs id (inside diameter) This is the number of turns that are on your spring. Use this method if the garage door does not balance correctly,. Measure the circumference of the cable drum, and measure the height of the garage door in inches.