As part of my ongoing AE86 build, it was time to finally install the rear big brake kit I purchased from Techno Toy Tuning many Black Fridays ago. Now, I can hear some of your thoughts and you're wondering, why would I need bigger brakes on my Celica-Supra rear end if you're getting roughly 20% of the stopping power in the back of the car? Well, Celica-Supra rear brake caliper rebuild kits are impossible to find, I purchased the last three from Rock Auto over a decade ago and then proceeded to install them with my good friend Steven and it was one of the worst caliper rebuilds we both experienced. So, between parts scarcity and wanting to increase the stopping power of that 20% I mentioned above, I decided to shell out some money and purchase the Techno Toy Tuning Rear Big Brake Kit for the RA40 Celica and AE86 Corolla. The kit itself did not come with instructions so I decided to create my own for those who like me, want to be very sure of what they're doing even if the pieces seemingly fit together like Legos, either way, let's dive into it.
Parts Needed:
Tools Needed:
Jack stands
Block of wood
Bearing grease
Super Grey RTV
Rubber mallet
Adjustable wrench
Flathead screwdriver
Pliers
5/16 Allen key
9/16 inch wrench/socket
10mm wrench/socket
12mm wrench/socket
14mm wrench/socket
First and foremost, you must loosen the lug nuts on your AE86 and then lift it in the rear in the safest manner possible, using jack stands to hold it securely along with either another jack stand at the front keeping the car level, or a chock to keep the front wheels from moving, safety is paramount. Now we need to remove the wheel and start removing the entire brake assembly at the rear, you can use a wrench or ratchet to loosen the two caliper bolts and pull it off to remove the pads. Then the bracket, and of course the lines, there's no finesse needed here unless you're saving them for later.
Depending on the condition and age of your rotors, getting them off should just require using a mallet to break the rotor free from the axle hub and you should be able to pull it off over the wheel studs.
Now grab your 14mm wrench and remove the four nuts holding the backing plate to the axle hub, this won't come off just yet as it will require removing the axles first.
Next, secure the axle puller to the axle hub, using your lug nuts to attach it to the wheel studs. Attach the slide hammer as per the instructions included with the tool and now you're ready to pull out your axle, before starting you should have a piece of clean cardboard to lay your axle on once it is removed, also ensure that your walkway is clear of obstacles. Now pull the handle portion of the slide hammer away from the car to leverage the weight until you feel the axles come loose, for some this may be done in two or three pulls, but more stubborn axles may take more effort and attempts to get it out. Once your axle is dislodged, gently pull it out and use two hands to bring it to your workbench/piece of cardboard.
Once the axle is out, it's a good time to change the oil seals and bearings if needed but those instructions can be found in a Haynes or other RWD Corolla shop manual. In the meantime, you'll need to disassemble the slide hammer and axle puller, the backing plate, and all of the gaskets and seals in between, make sure to note in what order they were removed. You will also want to use a gentle sand paper to clean off any mating surfaces, something like an 800 grit should do unless you have chunks of non-metallic debris, then you can go more aggressive but you want everything to be clean for re-installation.
Paper to the axle and metal to the dust shield incase you forgot to take note on which gasket goes where.
Grease your bearings before installing.
Next, apply grey RTV to the axle and each side of the gaskets as you re-install them as per the AE86 shop manual.
Now, use the four bolts included with the brake kit to line up your new BBK caliper bracket that will also act as your new dust shield.
It's time to put the metal gasket on the caliper bracket in the correct orientation, and then gently slide your axle back in to the rear-end. Once lines up, use a block of wood and a mallet to get the axle all the way in before using a 9/16 wrench to secure the caliper bracket nuts which will fully seal the axle.
Now install the hub-centric ring.
And now slide on the rotor.
The caliper can now be installed on the bracket by using a 5/16 Allen key that will secure the included bolts.
Installation of the brake pads is very easy, simply use a flat head to gently pull out the retaining clips, insert the new pads, and then re-install the retaining clips.
With that you should be all set to install the emergency brake cables if your kit was purchased with that setup, attach the brake lines, and bleed the brakes. Overall this installation took about two hours, mostly because it was my first time and I took extra precautions to keep track of every step with pictures and videos, but for an abbreviated step by step please watch the video below, thanks for reading!
Installing the Techno Toy Tuning Rear Big Brake Kit for the RA40 Celica and AE86 Corolla:
Kommentarer