protege5 with rx7 brake upgrade??
- Thread starter twilightprotege
- Start date
twilightprotege
Member
- :
- 2001 323 Astina SP20 (P5)
kooldino - i cant see why this wouldnt work...yes it might need a little bit of customising, but the same distance between the mounting hole centres is a good start. i know that new discs would be first on the need to change list....but you never know
xelderx - keep us informed
xelderx - keep us informed
pretty much anything is possible, it just depends on HOW MUCH work will be needed to make it work, LOL!!Kooldino said:
MP3skaterNC
JDM *****.
- :
- slotege mp3
we shall see next week.
flat_black
Member
Hey! Dammit! No! My idea! Stop! Hehee... I was planning on doing this once my RX7 came back from the shop as of six or so weeks ago, as I wanted to see if I could actually bolt the brakes around the stock rotors. =) The sizes I've found are as follows:
230mm x 22mm discs up front, 237mm x 20mm disks in the rear.
Keep in mind, those are from the FC3S model S4 RX7 Turbo II/GTU ('87 - '88), as taken off of my Turbo II.
I didn't measure the individual brake pistons yet, as I need to pull apart the system to install new brake lines, pads, and rotors once it gets back. If no one else gets to it in the next few days, once I get my 7 back, I'll be speccing the brakes out, and checking that the thread pitch for the lines is the same, just for simplicitys sake, as I have a spare set of brake lines, banjo bolts, and washers for the Protege. I'll let you all know what I find!
If you compare those sizes to the stock rotor size on the Protege (10.2 inches, about 260mm), the P5 actually has larger brakes, but the arc may be a small problem, as they're practically an inch and a fifth larger (30mm). I can also machine out relocation brackets at a friends machine shop if I need to, but we'll see what I find. =)
230mm x 22mm discs up front, 237mm x 20mm disks in the rear.
Keep in mind, those are from the FC3S model S4 RX7 Turbo II/GTU ('87 - '88), as taken off of my Turbo II.
I didn't measure the individual brake pistons yet, as I need to pull apart the system to install new brake lines, pads, and rotors once it gets back. If no one else gets to it in the next few days, once I get my 7 back, I'll be speccing the brakes out, and checking that the thread pitch for the lines is the same, just for simplicitys sake, as I have a spare set of brake lines, banjo bolts, and washers for the Protege. I'll let you all know what I find!
If you compare those sizes to the stock rotor size on the Protege (10.2 inches, about 260mm), the P5 actually has larger brakes, but the arc may be a small problem, as they're practically an inch and a fifth larger (30mm). I can also machine out relocation brackets at a friends machine shop if I need to, but we'll see what I find. =)
twilightprotege
Member
- :
- 2001 323 Astina SP20 (P5)
gee they are miniture brakes!!!!!!! i thought the rx7 had about the same size or larger than the p5???
MP3skaterNC
JDM *****.
- :
- slotege mp3
weird, rotors on the fd always looked bigger than the mp3 ones.
twilightprotege
Member
- :
- 2001 323 Astina SP20 (P5)
yeah and i was under the impression that the fc and fd had the same size rotors (???)
MP3skaterNC
JDM *****.
- :
- slotege mp3
it maybe because they run smaller wheels, and have to have certain clearances with the caliper?
twilightprotege
Member
- :
- 2001 323 Astina SP20 (P5)
the FD had 294mm rotors inside 16" wheels (according to www.rx7.net.nz)
considering the fd and fc had the same calipers, with 304mm rotors and the fc caliper it should work fine
considering the fd and fc had the same calipers, with 304mm rotors and the fc caliper it should work fine
flat_black
Member
Yep! As long as the caliper is fine with 293mm discs on the FD's, I can't see why it would be any issue on our cars... The only question is if the brake pressure difference, if any, will cause an issue with brake sensitivity. Like I said, though, once I get my car back, I'll try and bolt everything up and see if there'll be any unforseen issues.
MP3skaterNC
JDM *****.
- :
- slotege mp3
time to hunt for fd front calipers, and a mazdaspeed protege master cylinder.
flat_black
Member
Actually, I'm grabbing a set of FC Turbo/GTU 4-pot calipers off of eBay. What the hell, right? *shrugs* =)
MP3skaterNC
JDM *****.
- :
- slotege mp3
I think I saw the ones you were talking about, they looked decent hah.
twilightprotege
Member
- :
- 2001 323 Astina SP20 (P5)
sweet
another thing too, according to rx7 sites, an easy upgrade in master cylinder is to a mazda 929 master cylinder. it's 1/8" bigger i think so that'll really firm up the brake pedal
another thing too, according to rx7 sites, an easy upgrade in master cylinder is to a mazda 929 master cylinder. it's 1/8" bigger i think so that'll really firm up the brake pedal
flat_black
Member
Awesome! I'll look into the master from my roomies place, Autozone. If I can find a good quality one (IE, not Valuecraft garbage), maybe I'll take a look at that to see if it'll fit. =) If I can't have the fastest P5, I'll make up for it by having one that I can throw people through the front of the car with. 
flat_black
Member
Does anyone know what the bore of the stock MC is? I can't seem to find it... The stock 929 one is a full inch (25.4mm), I know, which is larger than the 15/16th's one on theh RX7.
twilightprotege
Member
- :
- 2001 323 Astina SP20 (P5)
only 1 way to find out
