KE20/25 brakes and boosters

[Jonny Rochester]

The KE20 only came with a single circuit brake master cylinder, and no booster. Some of them are 11/16".

This makes brake upgrades difficult, because often a larger master cylinder and booster is needed. But almost nothing is a bolt on upgrade.

Post you pics and solution info for upgrading KE20 and KE25 brakes, master cylinders, boosters, and hydralic clutch master.

(The TE27 Levin/Trueno had a booster and dual master cyl, and hydralic clutch and different pedal box. Sadly I'm not sure we can easliy get these parts. Or can we??)

[Jonny Rochester]

Options:
1. Use a booster and master off a KE55 or TE72 and modify the firewall and brake pedal slightly. (Sort of TE27 style. Master mounted close to strut tower, diff position.)

2. Use the stock 11/16" master, with a remote VF44 boosting the front circuit only.

3. Use a old dual Galant master, and maybe a VF44 for the front.

4. Use a HiLux or similar master 15/16" or 1" (with custom mounting plate), and a VF44 for the front circuit.

5. Use the stock single master, no booster, and big brakes.

(I have no idea which one works or works best, just some surgestions for myself. Brakes are either HiLux of Mazda 4 spots.)

[oldcorollas]

galant has both an 11/16 and a 3/4 dual circuit versions.. one is alloy and one is cast iron, but i forget which is which...

[YLD-16L]

From my recent investigations quite a few vehicles in the Mitsubishi range mount the master cylinder to the brake booster using the horizontal two bolt spacing as found on the early (vacuum assisted) corollas and TA22 celicas. This gives people a wide range of available master cylinder bore sizes too.

Johnny, on my KE25 I run a TA22 booster, a 15/16 brake master cylinder, modified pedal box, an AE86 clutch master cylinder in the position where the brake master cylinder would normally be on a KE20/25, currently running AW11 front calipers with 258mm rotors but will be changing to ST185 GT4 calipers (larger but still single piston) next week with obviously a larger rotor to suit.

There is not much room on the firewall for a brake booster any larger than the TA22/KE30 one, for anything larger it'll most likely need to be a remote setup as you described.

[Hurricane]

ke30 brakes bolt straight up to ke20,ive done it, also had a remote booster on my ke26, and have made up hydro cluctch set up for my ke20 useing a ta22 master cylinder and custom rod to move it thats all i really know, lookin at modddin datto struts into my car cos the brake set up are endless on them

[Hurricane]

oh what rae good brake setup changes for ke20's? with small are big mods to get it on there? what other struts can be putt in there?

[MRMOPARMAN]

hurricane, skys the limit, depending how far you want to go and how much you want to spend..
atm im planning S13 coilovers with R32 GTR brakes for my ke25.. shouldnt be too expensive as most of the shit can be gotten real cheap on forums and at wreckers.

i think the only mods ill need, will be strut top bearings (will be getting adjustables) lower control arm (maybe going adjustable there too) master cyl and maybe flaring.. not sure on that yet.

[Jonny Rochester]

I have used the same strut/brake setup as on my KE55 so far. Corona XT130 or RT132 struts cut shorter, coilovers, short shocks (from SV21?), HiLux 4 spot brakes with Corona hubs and peugeot disks. Struts are on Corona/Celica steering knuckles, and Sigma control arms, and Noltech? adjustable strut tops. 14" Superlites with 185/60/14 tyres. Gaurds may need lipping, not sure. Diff is RA23 Celica standard, only modifyed for leaf springs. Using lowering blocks.

Not going yet. The length of the brake pedal and pivot points are similar enough to AE86 and KE30, so the same principles should aply. The KE20 brake pedal is slightly shorter.

If I used a KE30 or TE72 or AE86 booster, lots of master cylinders would fit. The HiLux 4wd 15/16" is a good one but the brake lines come out to the right, too close to the strut tower when used in that position. I am told lots of Nissan masters are good for this. 15/16" and brake lines in a good position.

I am thinking that a 4 bolt master cylinder could be drilled to fit on a 2 bolt booster.