AE86 Sprinter

[Eircamae86]

Hello everyone

Eircamae86 here, used to be a regular.

Have been out of the Corolla scene and off the forum for many years, time for a come back (hopefully).

I now have an Australian AE86 (essentially an AE85) project which I have dabbled with on/off over the years. The intention is to finish it in early 2025.
It will be a registered road car but also compete in a newly created sprint series call Group ND for replica touring cars to group A rules with a few minor exceptions including ITBs/ECU/Brakes to make it more accessible (N2 etc is not allowed).

The base, a barn find Australian 4ac Toyota Sprinter.



Very honest car, painted a Citroen colour which is bizarre for Australia.

[Eircamae86]

Sprinters have a 4ac and S-series Diff so all this had to go.

The following was immediately fitted to the car.

New JDM Fuel Tank and lines
Fuel pump
JDM drive shaft
JDM disk brake T-Series with OEM diff & new 4:7 cwp
T3 4 links
T3 traction brackets
T3 adj Panhard
TRD Blue adj shocks
Refresh T50 with excedy HD clutch
T3 Front Coilovers
T3 Camber tops
T3 LCA
T3 Tension rods
Whiteline anti roll bar T3 drop links
Brake/Clutch master
T3 booster delete
Willwood Brakes
Flos Quickrack
T3 Tie rods
T3 Strut brace

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Things got a bit silly at this point.

I needed a 4age.

A competition engine came onto the market and after a bit of research I bought it.
Its a FAT Performance USA 4age 16v (haven't made these for many years), these are an Atlantic style 4age for off road racing. O/S valves, pistons, crank, big cams.

The previous owner had serious competition results but ran it on race fuel.
I don't want to use figures as the do not tell the full story but the engine had allegedly made impressive power.

Probably a mistake but I bought it without the carbs and distributor as I had already purchased a basic haltech and had done the efi fuel tank conversion.



Pic above is not my engine, just a reference as to how these engines look.



After getting the engine it got a freshen up, It got a new exhaust cam as the cam had no dizzy gear :|and bottom end bearings. The head gasket was not redone as the compression was extremely high.

As it had run on race fuel I now had to retro fit e85 fuel pump and lines.

A loom was made to suit the engine and Haltech sprint 500 ecu.

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Long story made short.

I fitted BT ITBs, injectors, fake TRD exhaust, 16v distributor, loom & Haltech 500 ecu.

The reason for not going coil packs is the race series, ae86 must retain coil/dizzy so no Yaris coilpacks etc.




On E85

Immediately on the DYNO the engine made this noise and the tuner did not wish to continue.

https://youtube.com/shorts/mwmssVXlVVs?s...tYiUhR-F67

This happened years ago and I have not yet opened this engine to see whats wrong.

So please have a listen and make suggestions, I will open in the future to find out.

Again, this was a running engine when I bought it. I replaced the cam with an exact same grind cam & freshened the bottom end bearings, the engine was not split but the tops of the pistons etc looked good with the scope.
I cant remember the compression of the cylinders but it was extremely high, maybe up to 14:1 but my memory may not be correct.

To be continued........... lots more to come

[banpei]

Good to see you back Eanan!
That's an amazing project you have there! According to my research, the Corolla Sprinters are all AE86-es with a 4A-© engine and they should be similar in specifications to the Corolla SR5 in the US. The difference is that they feature the Levin body style and not the Sprinter. If my information is correct, the body is was made in Japan. The only thing I'm not sure about is whether the engine and gearbox were built locally in Australia to evade taxation.
I love the little detail of the Irish license plate!