So that's why my brakes suck!

Caffeine · Postby **Caffeine** » Mon Aug 25, 2008 3:55 pm

Garry wrote:Caffeinne,

Are the rubber sleeves on the bottom slider pins available as a seperate part? One of mine is warn a bit.

Yep, the boots are $13 each apparently. I don't really need to replace the top two slider pins and boots as they look fine, but I thought I might as well freshen the whole lot up.

I'll get the part number when I pick them up, something like D25D33xxxx from memory...

rjastra2 wrote:your ABS cycles when you first start the car after a few moments, correct? I had the hardest time getting a firm pedal with the ABS unit. I started to notice I would bleed the brakes and everything would be great until i started backing out of the driveway and the ABS would cycle. So I threw it back on jackstands, and let the rear wheels spin a tad and hit the brakes, since they lock up instantly the ABS cycles....after I did this a few times and bleed again, I found a huge amount of air and old fluid. Brakes were much improved.

Interesting! I'll do that in addition to CT's suggestion. It should help.

We did bleed the ABS block, and a bit of air came out one of the lines, but nothing spectacular.

CT · Postby CT » Mon Aug 25, 2008 10:22 pm

Good to hear you've found the issue Caff - don't forget to drain out that 5.1 stuff. I've been down that track before too and it's not the best for our babies. I think the manual recommends DOT 3 or 4 from memory too.

Sasso · Postby **Sasso** » Mon Aug 25, 2008 11:24 pm

CT wrote:Good to hear you've found the issue Caff - don't forget to drain out that 5.1 stuff. I've been down that track before too and it's not the best for our babies. I think the manual recommends DOT 3 or 4 from memory too.

I'm curious about brake fluid type, why doesn't it like dot 5? I use the motul RBF600 is that the right type for the car? I recently saw a new type by motul that was like racing fluid suitable for dot4 brakes, then I started worrying that I might have the wrong fluid, (it was way more expensive though). I don't think my brakes have any problems except that the pedal goes softer after a track day, if you call that a problem, they don't overheat or anything.

Caffeine · Postby **Caffeine** » Wed Aug 27, 2008 6:51 am

Picked up all the parts yesterday, the caliper frames that the slider bolts mount into looks slightly strange...

Turns out they've given me the wrong ones. They look like they're for an NB8A :cry:

So off to Mazda again today to source the right ones. I have taken one off the car to take in for comparison.

The new lower slider pins have a funny looking rubber insert on them, which I didn't retrieve on the seized slider bolt we managed to remove, no wonder it was so difficult to get out!

Garry · Postby **Garry** » Wed Aug 27, 2008 10:33 am

The new lower slider pins have a funny looking rubber insert on them, which I didn't retrieve on the seized slider bolt we managed to remove, no wonder it was so difficult to get out!

Yeah, the funny looking rubber insert was the bit I was after Caffeine. So it comes with the new slider pin?

Caffeine · Postby **Caffeine** » Wed Aug 27, 2008 10:54 am

Garry wrote:
The new lower slider pins have a funny looking rubber insert on them, which I didn't retrieve on the seized slider bolt we managed to remove, no wonder it was so difficult to get out!

Yeah, the funny looking rubber insert was the bit I was after Caffeine. So it comes with the new slider pin?

Correct

Turns out my new frames are for the NB8B auto, which has smaller brakes

Also, there's only 1 mounting frame in Australia, and it's in Melbourne of course. That should be here tomorrow, and I'll be back on the road

(I'll clean up the frame we managed to get the seized bolt out of)

Caffeine · Postby **Caffeine** » Thu Aug 28, 2008 2:57 pm

Ahhh, the advantages of having a fully staffed mechanical engineering workshop next to your office

The seized slider pin has been removed, and the frame bore cleaned and polished ready for the new pin :mrgreen:

I'll clean and polish the other one tonight, and then pick up the new one tomorrow. I'll have 3 frames then!

The bore on the one Rodd and I managed to remove has been scored pretty badly so I'll keep that as a spare and install the new one in its place...

Should be back on the road tonight, with new pads and braided lines, should stop bloody well again! Woohoo!!!

Caffeine · Postby **Caffeine** » Thu Aug 28, 2008 10:54 pm

HOLY SNAPPING DUCK sh*t!!!!! :shock:

Best brakes I've ever used! :mrgreen:

Those hawk pads are awesome! I took the car for a gentle trip round the block, with 10 or so medium brake applications from ~80km/hr to ~30km/hr, then let them cool for 15 minutes. Now even a slight poke with my big toe sees me heading for the inside of the windscreen :shock:

Sasso · Postby **Sasso** » Thu Aug 28, 2008 11:14 pm

Caffeine wrote:HOLY SNAPPING DUCK sh*t!!!!!

Best brakes I've ever used!

Those hawk pads are awesome! I took the car for a gentle trip round the block, with 10 or so medium brake applications from ~80km/hr to ~30km/hr, then let them cool for 15 minutes. Now even a slight poke with my big toe sees me heading for the inside of the windscreen

Told you

They get even better when you get heat into them at the track.

Caffeine · Postby **Caffeine** » Fri Aug 29, 2008 12:18 pm

Sasso wrote:Told you

They get even better when you get heat into them at the track.

Had a chance to try them out from a higher speed exiting the M2 this morning, they are very very awesome, easily getting the ABS to kick in, even with the RE001's. Good feel, easy to modulate, and so so powerful!

Now the tyres are the limiting factor for the brakes

Boags · Postby **Boags** » Fri Aug 29, 2008 1:57 pm

Hawk HP+ you reckon? :?:

I think the OEM pads are a little beneath the treatment they get from me; the car is only used weekends and trackdays/club runs/mountain runs etc. So they are ALWAYS used hot.

I'm going to give the whole system a god look over to make sure I'm not in the same boat as Caff was. The car only has 55k on it though, so I doubt it.

Boags

davidsgiles · Postby **davidsgiles** » Tue Nov 11, 2008 5:20 pm

I have had the same problem with the long throw before the brakes caught and thanks to this thread I saved myself the $700 a side cost for the new calipers originally quoted by my mechanic as I was able to just get the slider pins. This issue now is that they are saying that there are no caliper kits (rubber seals) in the country and there is a two week wait for parts to come to Mazda from Japan

. Any alternatives??

Fatty · Postby **Fatty** » Tue Nov 11, 2008 5:46 pm

are you just after the rubber seal kit? coz if so, i just bought 2 sets from mx5parts.co.uk. they are cheaper than buying from mazda , altho i've been told you can find them cheaper again on ebay. my parts should be arriving in the next few days so hopefully my brake issues will soon be sorted out too.

http://www.mx5parts.co.uk/product_info. ... cts_id/304

this works for all models 1989-2000, not sure if they have a similar item for later models.