SP20 big brake kit - Update, date etc

[BigMal]

Not that I am aware of

[twilightprotege]

poo.

[preeman80]

~bump~

Well, I am now $2000 poorer! just put money down on a brake upgrade with a spare set of rotors.

330mm rotors (slotted and crossdrilled)
pbr twin piston calipers.

will be going back during the week, dropping car off on saturday 27th and will be ready by thursday/friday!

will update as i go...

[twilightprotege]

nice!

[BigMal]

Who's doing the work Gavsport or Racebrakes. Gavsports wanted $900
for rotors and pbr calipers thats a fair bit of $$$ for the brackets to be
made up and some braided lines. Hope it all goes well.

Mal

[preeman80]

well, its the same place as Chris got his ones made up, and I think if you read this thread... his price was $1694

Page 3

Price fitted was $1694. This was for 324mm slotted rotors (315mm same price) and HSV Premium twin spot calipers and pads (by PBR) with Motul 5.1 brake fluid. The fitting cost was around $500 and took ALL day (it's a big job on our cars).

I am running 330mm slotted and drilled rotors, everything else is the same.

Secondly, they want the car for two days, saying it is a big job and 1 day is tough.

Thirdly, the price includes another set of rotors, pre-drilled to suit the SP20. Does anyone else want a set? Surely buying 3 will be cheaper

Fourthly, if another SP20 is able to do their car at the same time as mine, the cost will be ~$1450 fitted. (if there is a 100% someone else wanting it, I can postpone/wait)

let me know...

[preeman80]

Does any one know of "Alcon" that is the next option up, they look really nice, with a big blue Alcon written on them...

only thing I could find was http://www.alcon.co.uk

[SFC01]

Reasonably big on the global motorsports stage.

[preeman80]

Will get pictures of the rotors, callipers etc 2morow. I am also going to get the specs of the whole kit.

ooopss. did i say 2morow, i meant saturday!

[preeman80]

Ok here are the photos...

the Current setup on 19"s


the PBR callipers (2 piston 4 spot) and 330*25*55 rotors


the Alcon 4 Piston, 4 Spot callipers that would run on 343*28*55 rotors


and as a note.. no i can't afford them! :shock:

[preeman80]

btw... question time..

looking at the pics on page10

should i paint the PBRs Blue or Red?
i took them home today with me, they will measure and make with another set, once i am done painting I can give the painted ones back...

[twilightprotege]

i think blue would look best - see if you can get the same colour as the car???

and gee you're current setup looks SO lacking!!!! look forward to seeing the big brake inside those lovely wheels!

[arden]

How about silver Pree?

[preeman80]

Silver like the alcon ones? I was thinking get the whole thing red, and notice how it has groves.. well the edges... shine them up, so it will be all red with these edges through it..

[preeman80]

ok.. news update..

I was supposed to get the car back today, but it is still not ready, needs a couple of hours of fine tuning still. ETA is monday morning/noon finish with a monday night pickup.. Can't wait, haven't driven for over a week now..

hope its all good! will post pics after I get it.

[FAT SP]

Im new here in the forum but a very close friend of mine Kevin Gavin actually owns specialised brake & clutch services ( gavsport ). he actually done all my clutches and brakes for my ex race car. Is a good bloke. He isnt cheap retail but he does very good work.

[preeman80]

Good to hear FAT SP, tell Kevin, I love the stopping power, and yes I am coming back to get my back brakes fixed up! 315mm as he suggested and I would love to get them in slotted as well!

I wish he was cheaper! :shock: but its all worth it :twisted:

Have you seen the photos of the brakes on the car?

[FAT SP]

Yeah i seen some pics on the other thread. I will have a chat to him next time i see him. Did you have to get your guards lipped when putting 19's on?? Do you have any problems with turning? Im looking for wheels to put on mine and i was thinking 18's or 19's.

[Sims]

I was reading over here => Clicky earlier today about fitting rx7 4 pots onto an SP20. I was just wondering how tricky/expensive this sort of thing is to.

[Aaron]

Sims,
I have no idead about some of the junk posted in those threads but here's basically info on the RX7 caliper idea..

1. You need to either grind the rotor channel about 3mm wider OR put a 3mm spacer in the bridge of the caliper. The spacer needs to be flat alloy with 9mm round 1mm deep seal groove cut in plus associated through holes etc. You'll need new bridge bolts and pad pins etc. Grinding is the easy way out but does mean you'd meen to shave the pads a little as well.
The metal you're removing isn't strictly structural so it's up to decide which is more acceptable. Either that or find a 22mm thick rotor of about 295-300mm which is the largest diameter the rx7 caliper can grab effectively (supposedly 314mm is the max) There are plenty of 24 and 25mm thick options.

2. The setup described runs custom - or "odd" hats to mount the rotor. I never did see an actual rotor height measurement anywhere. This is the most critical measure as it would then tell us more about how the caliper is mounted. But in general the caliper mounting is pretty close, a few mm here or there really.

3. Wheel Spacers were needed due to the rim design in use. You need ~65mm from rotor face to inside of wheel spoke MINIMUM.

4. The caliper mounts have never been well described, although in theory the caliper will pretty much bolt up the factory knuckle and support a 295/300mm rotor. Some spacing my be needed. Also through bolts will need to be used as the knuckles aren't threaded and neither are the calipers. However given the choice of threading alloy or threading Cast steel you'd thread the steel, or use a relcoation bracket to get things spaced and bolted up 100% perfect. Elongating mounting holes is a dumb practice when it comes to brakes.

As for Cost - if you take $2K to a brake specialist you'll get a great setup with PBR calipers and very few clearance hassles. Plus all gear is new and properly engineered.

If you DIY then you're up for:
* RX7 Calipers (about $250 pair + rebuild)
* Grinding or bridging calipers (unless you use a 22 thick disc)
* Mounting points - probably fabricating locating brackets etc etc
* Rotors at say $250 pair
* Rotor hats $$$$
* Pads

etc etc

It's possible and at the moment at least two people on the forum are working on Big setups using RX7 calipers, but keep in mind after 8 months of research and measuring it's only just getting to the point of bolting stuff together.

All in all you could look at the following ideas that would be easier:

* Use Millenia or Subaru twin spot calipers
* Get new rotors and great pads then re-visit the idea of getting bigger brakes if you can't stop the car after that.
* Pay $2K to get a Professional to do it

Factor about the same to do the rears - although there's plenty of 280-314mm options availbe from Mazda that could be bolted up.

If you've got 4-stud you probably could forget it unless you really want to invest in 5 stud conversions (another $1K plus wheels)

A.