I'm putting 280zx rear brakes on my 240 per the SCCA E-Production rules. This is what I'd like to do but have some concerns. A friend is doing some research for me on this but I thought I'd run it by the forum just the same. I've also searched all over the web including this site but haven't found exactly this issue.

I want to remove all the internal components of the caliper leaving only the Piston, Piston Seal, and Piston Boot. Then, I'll cut off the excess part of the Caliper Body at the point where the helical Push Rod goes through its passage. I'll then seal off the passage leaving a tight chamber for the Piston. I'll also close off the small air passage on the Piston. I'll then be left with a simple lighter caliper with very few parts to fail.

The question is, what problem will I then be introducing? Will the Piston drag? Will it pull back too far? Is the helical push rod mandatory for adjustment?

My mod looks as simple as the stock front caliper so I believe it should work just fine. Comments?

Here is the caliper diagram:

I understang changing you brakes for disk and 280zx calipers but i would not modify anything in there. I do not think these brakes are the type that fail

much with all the parts in. if it is for weight cut the unused lenght of the bolts on the car, remove seat rails (they are suprisingly heavy). Use lightweigt wheels

I think that rod is for adjustment and it is a kind of memory as the pads get tiner it keep them closer to the disk. I dont khow what will append if you remove this

will the piston get all the way back in the piston

will the piston get all the way back in the piston

oups should read will the piston get all the way back iin the cylinder