'63 Car Jack
06-23-2011, 12:05 PM
#1
'63 Car Jack
Anyone have an idea of the distance a scissor jack should travel to enable a tire to be changed on a '63. The tire size is P21570SR14. I don't want to spend the big bucks for an actual '63 jack and would like to pick up a regular scissor jack at about a tenth the cost. Thanks guys.
06-23-2011, 12:46 PM
#2
Race Director
Member Since: Jan 2002
Location: Close to DC
Posts: 14,544
Received 2,127 Likes
on
1,466 Posts
C2 of the Year Finalist - Modified 2020
Do you actually have 14 in. wheels, or is that a type-o? If you have a garage floor jack, put it at the point most likely used front or back, jack the car just enough for the tire too clear the ground and measure. 
Dennis
Dennis
Pilot Dan
06-23-2011, 02:03 PM
#4
It's no type-O. They are 14". Why does it surprise you? I'm mostly concerned about getting a flat while out cruising and not being able to get a the jack under the car. I didn't want to have to flatten my tire to get a measurement but maybe I'll have to.
06-23-2011, 03:34 PM
#5
Drifting
First, we're surprised at the 14" wheels because the stock wheels were 15", and people usually don't put smaller wheels on.
Secondly, I don't see why you would have to flatten a tire to do measurements. A scissors jack is very short when it is fully folded, maybe 4". There should be no problem getting it under the frame with the tire flat. Your concern seems to be getting the car high enough in the air to put on the new tire, which is fully inflated....just as your tires currently are.
Secondly, I don't see why you would have to flatten a tire to do measurements. A scissors jack is very short when it is fully folded, maybe 4". There should be no problem getting it under the frame with the tire flat. Your concern seems to be getting the car high enough in the air to put on the new tire, which is fully inflated....just as your tires currently are.
06-27-2011, 02:35 PM
#6
When I bought the car 4 years ago it came with the 14" tires and didn't realized stock tires are 15". It isn't stock. The engine and tranny aren't original so I'm not surprised about the tires. Maybe that's why I'm turning around 3k rpm at 60mph.
With the 14" rims that would bring the frame closer to the ground with a flat. So I'm not sure even 4" would be low enough. I wonder if it's possible that an original '63 jack may not go low enough? That's why I'm thinking I need to deflate the tire to be sure.
With the 14" rims that would bring the frame closer to the ground with a flat. So I'm not sure even 4" would be low enough. I wonder if it's possible that an original '63 jack may not go low enough? That's why I'm thinking I need to deflate the tire to be sure.
06-27-2011, 05:55 PM
#7
Race Director
Member Since: Jan 2002
Location: Close to DC
Posts: 14,544
Received 2,127 Likes
on
1,466 Posts
C2 of the Year Finalist - Modified 2020
The taller the tire, the less RPM you turn. 215/70/14 should be about 26 1/2 in tall. So turning 3K @ 60MPH you probably have 3:73 gears, maybe 4:11. Dennis
Dennis