4 piston brake calipers ..., what are my options? Options

[SirAndy]

i'd like to go to a set of (bigger) 4 piston brake calipers on all 4 corners.

right now, i have '84 carrera hubs, rotors and calipers all around ...

what are my options? what's a direct bolt on, what does require adapters?
(IMG:style_emoticons/default/idea.gif) Andy

[LarryR]

That was a fun day we should start thinking about when to do it again.

Unless you go to bigger rotors bigger calipers are not going to buy you a lot in the fade department.

993 calipers are radial mount so you can take them to a machine shop to have the appropriate adapter made...

I was bringing up the rear that day but did get heavy on the brakes constently. However, my 930 brakes with pagid pads had zero fade. .... I dont think they work well for a 914 though.

I had Jay at german percision build me a set of adaptors before ... not to bad you can have adapters made from billit alluminum for like 150 per pair.

If you are going to a 17" rim I would suggest going to a 13" rotors with either 993 calipers, 993 TT calipers (big bucks), or another nice alternative is the 928 S4 calipers that are the same size housing as the 993 TT bug just a little smaller piston set up.

I think the only potential problem with any of the set ups mentioned above for the 914 is figuring out how to make the parking brake work.

[atsealevel914]

my 930 brakes with pagid pads had zero fade. .... I dont think they work well for a 914 though.

why?

[byndbad914]

my 930 brakes with pagid pads had zero fade. .... I dont think they work well for a 914 though.

why?

I have to disagree. I have my V8 525HP tube chassis beast at 2650lbs now and I have ran Pueblo race track 6 track days now, PLUS some track days at Willow Springs big track on the same set of rotors and same stock replacement pads from Pelican now for a total of around 10-12 hard track days. I have zero fade in any session, and about half pads currently.

I would bring the car down from around 140-145 after the front stretch of Willow (one time from around 155mph but that was before the cage so I only did it once).

At Pueblo I go into turn 1 at 130-135mph and in short order drag it down to around 85-90 and don't cook the brakes at all. Car is awesome with those brakes. Front calipers bolt right on, the rears I had machined at Vehicle Craft and bought their floating rotor setup for the front and stock turbo rear rotors. Fit under 15" wheels too (tho' Andy won't have to worry about that with the 17s).

YMMV, and to be clear, I have a tilton pedal assy with adj bias, so I can fine tune quite a bit including pedal feel with MC diams. I run a .700" front mc and .625" rear mc currently, which was recommended by Tilton based on total piston area of the front and rear calipers and feels great.

edit - forgot the funny part... last track day my buddy was looking at the brakes and rotors because he just cooks his and he said "wow, the brakes work awesome at least... about the only thing tho' " (IMG:style_emoticons/default/laugh.gif) Sad but true, it is about the only thing I haven't had a single issue with on the car.