7 1 from the back end of your horizontal track measure the distance of your high lift conversion.
Making garage door higher.
Retest the door balance as you did in step 1.
That is two 3 1 2 inch top and bottom studs plus two 1 8 inch brackets between plus 1 4 inch on the top and 1 2 inch on the bottom.
If you have the clearance and feel like spending the money you ll be much better of with 8 doors.
Standard garage doors can typically be converted to high lift if there is enough head clearance in the garage.
Step 1 lay the sheet of 5 8th inch plywood flat on the floor of your garage.
If you drive a larger vehicle you may want to reduce the vertical length of the arched corners to allow your higher vehicle to fit into the garage.
Head clearance is the distance from the top of the garage door opening to the ceiling in the garage.
Add to that distance the length of track that is left once you open your garage door.
Adjust the springs on both sides of the door the same way.
If you wish for the door opening height to increase you will.
If the door was closing too quickly move the spring to the next higher hole on the bracket.
If it was opening too quickly move it to the next lower hole.
Locate the limit adjustments screws located on the side of the opener.
The vertical left right and two centers measurements should be subtracted by 8 inches.
How to adjust garage door height step 1.
This is the additional height your garage door will open.
Set up your step ladder beneath the garage door opener being certain the ladder is level and stable.
So just get one new panel for each side if you need to raise it up a few.
If your outdoor concrete is very un level then you may want a bigger bottom gap.
I think garage door panels are sized in 3 increments.
Reinstall your track and bearing plate.
One way to do it would be to get wall extensions for the entire the garage and then cut the roof of the garage off lifting it up to the height you want it.
It is possible to install larger garage doors to give you more room to function in your garage.