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Dwayne, My 1st advice is to get rid of the Corvair suspension.
Over time it will prove to be a difficult thing to maintain because
of part availability.
That being said,
let's look at the differences between the Corvair and Mustang II coil
springs. Coil
springs are sized by the ID (inside diameter) of the spring. The ID
remains constant no matter what the wire size is.
Now
that you know that, Corvair springs have an ID of 3.49 inches. Mustang 2 springs have
a 3.5-inch ID. So by ID the M2 spring will fit.
The ends of the Corvair
springs are both tangential, that is they twist off into space and the
spring would fall over if you tried to stand it on it's end. The ends
of the M2 springs are one tangential and the other square. The square
end allows the spring to stand up by
itself.
A square end can be turned into a tangential end by cutting
the square end off.
The Corvair springs,
and there were 2 used, have free lengths of 12.7 and
12.02 inches.
The Corvair springs have spring rates of 162 and 188 lbs
respectfully. Rate is the amount of weight required to deflect a spring
one inch.
The Corvair springs are designed to be 7.5 inches tall at 854
lbs, that is the spring will compress about 5-inches when 854 lbs of
weight is put on it.
The lightest M2 spring has a rate of 308 lbs and is 14-1/8-inches tall.
This spring would be 9-inches tall with 1,555 lbs, or 11-3/8 tall at 854
lbs.
The shortest M2 spring is 13-5/8-inches tall and has a rate of 315
lbs. It would be 9-inches tall at 1,468 lbs, or 10-7/8 tall ate 854 lbs.
While a square end M2 spring can be converted to a tangential ended
spring by cutting the square end off, cutting the spring shorter will
increase the spring rate. The amount of rate increase depends on the
amount of the spring cut off. Learn all the math here.
Now with all this being said, can a M2 spring be used in place of a
Corvair spring? Yes, the M2 spring must be cut and the ride will be
firmer. Now which one of the 23 M2 springs should be used......I don't
know. That is something you would have to experiment with.
Now bear in
mind, once you cut the spring it is yours. we will not take it back.
The complete list of Mustang 2 springs we offer can be found
here.
They are 95.00 per pair plus shipping. In order to provide a shipping
price we need the Zip Code to where your order will be sent to.
Mike |