Which calipers

[TDI PILOT]

I am planning on replacing the front calipers on my NOVA/KBS F600 and wanted to see what experince you all have had with the different options Willwood has. Just for reference I have 3.25" lug mount and .375" thick rotors. I use a 3/4" Willwood MC for the front. (Could change if necessary as I plan on buying new MC's as well)

Willwood DynaPro- This caliper comes in two variants that will fit my car. The first has a piston area of 2.4 Sq inches or 1.75" piston diameter and weighs in at 2.3 Lbs each- $106. http://www.wilwood.com/Calipers/Cali...temno=120-9687

The second has a piston area of 1.5 Sq inches or 1.38" piston diameter and weighs 2.3 Lbs each- $110. http://www.wilwood.com/Calipers/Cali...temno=120-9688


Willwood DynaLite- This line only has one option. It has a piston area of 2.4 Sq inches or 1.75" piston diameter and weighs 1.8 Lbs each- $119.30 http://www.wilwood.com/Calipers/Cali...temno=120-4062


I know the DynaPros are supposed to be more rigid, but there is a weight penalty there and a rather large one considering it is unsprung weight that directly affects the suspension rates.

Please advise,

-Eric

[Jnovak]

Use the Dynaprowith the 1.75 bore piston. It is much stiffer than the dynalite. You can also use the small bore Dynapro but you will need a smaller master cylinder.

[TDI PILOT]

Jay,

You believe the rigidity benefit offsets the unsprung weight penalty?

[Jnovak]

Yes.

[F five hunj]

Jay, what about the GP320?

http://www.wilwood.com/Calipers/Cali...?subname=GP320

[Jnovak]

Jay, what about the GP320?

http://www.wilwood.com/Calipers/Cali...?subname=GP320

A very nice package but needs new mounting bracket. Might not fit your inner wheel half. I have one if you want to borrow it.

[TDI PILOT]

There are issues with mounting and rotor thicknesses with those calipers

[mark 21]

That caliper is designed for rotors from 9" to 11.5". Thickness is not the problem. It is a four pod caliper. the others are two pod calipers. I believe Jeff Colegrove was working on putting those on the front rotors at one time. He has this website. http://formula500.scootin159.com/
You can also contact him at his business website http://www.kartsmarter.com/index.html
There was talk at one time that someone was going to make a four or six pond caliper for small rotor diameters like what is on f500s but have not herd anything on that lately.

[Jnovak]

That caliper is designed for rotors from 9" to 11.5". Thickness is not the problem. It is a four pod caliper. the others are two pod calipers. I believe Jeff Colegrove was working on putting those on the front rotors at one time. He has this website. http://formula500.scootin159.com/
You can also contact him at his business website http://www.kartsmarter.com/index.html
There was talk at one time that someone was going to make a four or six pond caliper for small rotor diameters like what is on f500s but have not herd anything on that lately.

They are 4 piston and 2 pad calipers. They are also a much different shape. We cannot put them on our cars without a new upright.