How To Easily Rebuild Your Mazda MX-5 Miata Brake Calipers (Stop Struggling With Dust Boots)

[@steelwitness]

Hello from the southeast USA. It makes me happy to see people doing quality work in other corners of the world

[@KineticLatency]

Just what I'm doing atm. Well, have been doing for a while now. Basically they're on my workbench gathering dust.

[@BOFIRacingTV]

You can do it! I used to hate doing it but I'd maybe actually do it for someone else now.

[@PowellMoore]

I have never owned an MX5, but I've been enjoying watching your videos

[@BOFIRacingTV]

Thank you!

[@bomueller5456]

Live is too short for not owning an mx5

[@tedstriker754]

I'm rebuilding my '90 NA's rear calipers, so this gives me confidence to do so. Next I'll do the same on my '99 NB's rear calipers.

[@Kooshawl]

Thank you for making this video, a lot of mazda models use the same rear caliper setup, this resource will help a ton of people.

[@williammagrath7675]

Just used this video to rebuild my rear calipers. Very good explanation and all seems to be ok. Took me 3 hours to do both. Thanks :) Now to try the fronts....

[@yaellesjacobs3077]

Thanks for the video! Just did mine in about two hours without any unpleasant surprises or big mistakes.

[@harman1967]

The piston dust boot assembly technique was well worth it, always a fiddly job especially when you have freshly painted callipers and don't want to chip the paint, cheers BOFI Racing.

[@MarkConwayTheBurgerKing]

Just paint ya Calipers your favourite colour, High Temperature Paint, full gloss. Best Mazda rear calipers rebuild tutorial, 👍

[@adantesuds]

Legends - this is exactly what I've been looking for - bought some SVT Sport brakes for refurb and nowhere shows how to do the whole piston/seal et Al. Taa Leigh.

[@BOFIRacingTV]

Great to hear, glad it will be of use. I've definitely struggled in the past! Just take your time and don't force the pistons past the seal with too much force. Work them in slowly so the seal doesn't get damaged. Don't ask how I know 😅

[@adantesuds]

@@BOFIRacingTV so I've done stage 1, stripped them apart and removed all seals and components thanks to the tutorial, in process of cleaning them up and painting them before I follow the second half and put them all back together 😅

[@MarkConwayTheBurgerKing]

This makes the job simple & easy, Thanks mate. Painted my Calipers High Temperature Paint Black👍💖

[@MarkConwayTheBurgerKing]

Awesome Hands On tutorial. Confident to tackle my Mazda 323 Astina , now have seen the ins & outs of Mazda rear calipers and handbrake adjuster mechanism , removal and installation, and the piston dust boot fitting, now you demonstrated the how to fit technique! 👍

[@BOFIRacingTV]

Glad it helped

[@adamgoulder8019]

Thanks so much for the dust seal tip! I was starting to go mad.

[@corbanrust6842]

There are some snap ring pliers the reach down in i picked em up off Amazon for 15 bucks. They are 90 degree bent long reach and they made it phenomenally easy

[@CarObsession]

Very helpful video - this is something I may be doing in the future, so good to know!

[@markdean3579]

Piston dust boot driving me mad. Thanks for the tips 😊

[@bennigek7196]

Thanks Bofi. Love you guys❤❤

[@DiwaRooftop]

Cool hack getting the handbrake mechanism out of the piston👍

[@Kenteshimodo]

Love that this channel is getting more and more active! Definitely learnt a lot from this and thanks for the boot tip haha My one and only tip, B-roll ! Can make it more visually interesting while giving explanations or descriptions of previous attempts (or other things). I know this can be troublesome to get your hands on as it occasionally needs reenactment if it wasn't being filmed, but b-roll is king ;) Keep up the great work

[@BOFIRacingTV]

Thanks for the tip! We will make a conscious effort to get b roll of the important bits in future. We are learning all the time so feedback is massively appreciated

[@seany8787]

I have 3x rear calipers to refurb and sell for my EP3 that will also fit s2k’s. Literally cba, but the good thing about Honda rear calipers is that the piston face is cross cut so a lever of some sort means you can spin it out provided you are replacing the piston seal anyway. They dont have a mechanism like the MX5s. I always remember mine being a bit chewed up

[@BOFIRacingTV]

How's that JB weld holding up? ;)

[@seany8787]

BOFI Racing wasnt happy with the finish, so just bought 2x pistons. The best JB welded one ill keep in a super emergency caliper

[@aadjuhhh]

This information is great. now i know that i can fix the handbrake stuck issue. Its moving but very slow. Rebuild incomming :)

[@iamu]

We just have a single rebuilt caliper not a set :D Great video!

[@BOFIRacingTV]

Thanks! Hope it was useful

[@malcolmofwarwick890]

An extremely helpful and largely a very clear and concise guide on how to do the job. Reference to "the hotdog" was confusing ... I don't know what that bit is and it was not so clear as to why you needed to put it inside the piston in the way you did (when releasing the handbrake mechanism) ... seemed to me to be back to front ? Anyway, now I feel confident to undertake this caliper rebuild. Paint colour ? I'm painting mine red, of course ! Looking forward to your other videos too. Cheers.

[@cba360]

To get the dust boot seated you could get two C shaped parts made on a 3D printer, should allow you to put pressure on the rear of the seal where isn’t accessible easily, ABS may be ok for exposure to brake fluid. When I put brake pistons in vice, I always put something soft between the face of piston and vice jaw, normally slip it aluminium.

[@BOFIRacingTV]

We need some soft jaws for our vice. Cardboard could have worked too

[@BuiltByKyle]

awesome video guys ! i loved the angles used pretty mint

[@BOFIRacingTV]

Cheers Kyle, we'll keep them coming for you

[@LocoRocoNL]

great explanation, the dust boot trick cost me a day when I did this myself a few months back :P

[@BOFIRacingTV]

Honestly, I've nearly thrown the caliper across the room before in frustration. The dust boot trick really takes that pain away.

[@rajanc1992]

About to attempt this on all 4 corners of my car after my parking brake seal blew out. Wish me luck!

[@Josh-pf6ce]

I'm currently in this same process well everything is stripped down as im doing the 1.6 to the nb 1.8 upgrade however im wondering if the process is the same for non-sport brakes?

[@RC_BASSBOY]

These are the same rear brakes on a 2002 to 2003 Mazda Protege5. Might as well include that information in your discretion also.

[@Tugs-W]

Great video, clearly explaining everything & how to do it. Just a thought when doing the rebuild part change gloves for clean and wipe down bench to prevent any dirt getting near the new hydraulics. Also a bit of cardboard over the jaws @ 07:00 would not go amiss :) . Also looking forward to trying the Redline gearbox oils you've just dispatched to me great service

[@BOFIRacingTV]

Thank you ☺️ some cardboard or a rag would definitely have been useful if I reused the pistons. I'd have also liked some aerosol brake cleaner to flush it out real nice. The calipers are still on the bench so I can flush it out through the brake line fittings before they get fitted at the weekend 👍 thanks for shopping with us the redline is good stuff!

[@DWMK1]

Think mine might be seized as 3 wheels have plenty of pad left but one is completely gone only noticed this morning as it started squeaking. Hopefully it's something I can sort myself with the help of a few videos as I've never done anything mechanical myself haha

[@zuranku]

This format would help in a headgasket tutorial. Absolutely wonderful. By the way, where did you get the parts from?

[@NathTHFC1234]

Hello! I was wondering, what did you have to do to fit the 1.8 SVT brakes onto your ‘89 NA?? Obviously callipers, carriers, discs and pads.. but i’ve heard you need the SVT master cylinder, plus different brake lines and some kind of T juntion or something?

[@crumpets19]

Nice work chaps! I've done this more times than i can count and never knew the hotdog trick to remove the handbrake gears! I made up a special tool to do that - That will be retired now haha. I'm unsure if its the editing or experiance, but you made that look a lot easier than I recall it being haha, the circlip is a little bugger.

[@BOFIRacingTV]

Thanks! The circlip is definitely really tricky. There must be a special set of circlip pliers that make it easy 🤔

[@crumpets19]

@@BOFIRacingTV sounds like a good idea for the store! 🤔🤔🤔

[@NHCsrnnx]

Great video and useful tips too, well explained, confident to have a go myself now.

[@philjones5728]

Great video Leigh - you make a difficult job look relatively easy. Hopefully there's more content like this (as well as performance mods and obligatory donuts!). You need to update the intro' to include your 'proper' pink car rather than the sun-bleached one ¦:¬)

[@BOFIRacingTV]

Cheers Phil! Yeah we have a lot more footage now to update that intro. When we watch it back now it shows just how bad it looked! It'll be back on the road next week so we can get some more rolling shots :)

[@kyracing8902]

Make it easy and simple looking on getting a mx5 the end of the year I know who I will be getting my parts from 👌

[@alexmessina3383]

They typically seem to leak out of the back of the caliper with fluid dripping around the handbrake spring and it seems, from your disassembly, that the only place a rear leak can be coming from is that little O-ring around the adjuster bolt? Do you think that's right ... the "seal" around the handbrake shaft is really just a dust boot not a pressure seal, I think.

[@AndyMcGeever]

The bolt over the adjuster screw has a copper washer on it so if fluid did bypass the o ring on the screw it would still have to get past that bolt.

[@Vamosalaplaya1979]

Is it only MX5 you fix the caliber? I wanna learn how to change the caliber on the mazda 626 GF 1998. Sedan. 😀

[@ramirofierros649]

Where did you get the rebuild kit

[@maximusaurelio828]

THANK YOU, I just fucked my rear caliper by pushing the piston out, but now I know how to put it back

[@maxcrowner4431]

Can anyone recommend me where to get the parts to rebuild a set of svt callipers?

[@PauloAlexandreOgliani]

Can you recommend where to buy the full replacement parts?

[@BOFIRacingTV]

eBay 👀

[@tommaisey4620]

A normal set of circlip pliers have no problem removing the one for the adjuster

[@BillSW]

can u just replace the dust boot without removing the piston?

[@BOFIRacingTV]

Afraid not

[@miatahelix]

do you sell this repair kit? any specific link?

[@BOFIRacingTV]

No sorry, we priced up Centric but the full kits were £££

[@mikkolempinen2717]

Lube the piston with red brake seal grease. Dont let brake fluid go under the dust boot.

[@Loopyengineeringco]

Nice tip, thanks!

[@BOFIRacingTV]

Cheers!

[@Dan00105]

Shame no one sells an upgrade for the bloody Allen key head handbrake system they break so easily it'd be nice to have a better option

[@BOFIRacingTV]

At least it's just the adjuster key thing that strips and not the part inside the caliper itself. They're easy enough to replace, just a pain in the butt when it does happen. I have one I swap side to side 😅

[@Dan00105]

@@BOFIRacingTV top tip you can also cut down a mangled one and reuse it..... Ask me how I know 😂 but I have done the same as you too

[@BOFIRacingTV]

Great idea! I think I binned the chewed up one already 🤦‍♂️

[@PROZA4EG]

@@Dan00105 thx for the tip. gonna try it

[@Dan00105]

@@PROZA4EG I cut mine with a dremel, apparently they're made to be cut down 👍

[@AntKardano]

are you like a budget moog?

[@BOFIRacingTV]

moog from wish

[@nikolaspapademetriou3077]

Legends 🙌

[@BOFIRacingTV]

💪

[@daviewavie112]

Just buy a replacement caliper (remanufactured). It was like $40-45

[@cameronjames5040]

I used these circlip pliers to get the circlip out and worked great. Internal Cylinder Snap Ring Plier... www.amazon.co.uk/dp/B082XNRKX3?ref=ppx_pop_mob_ap_share