Formula Atlantic powered AE86

[ZaX]

Real or fake?
This is Hasselgreen FA engine

[senna]

very interresting. If it's real then he's probably going to be spending some time in keeping it running smoothly. If i remember correctly, these engines were not build to last very long.

[Johan]

Way cool! A hard core ripper, no doubt.

[Ivan141]

It's the real thing...if you take a close look at where the oil pressure sender usually sits you can see the distributor block for the dry sump system.. It's probably a downtuned version if it's meant to be used for longer intervals. Very nice piece of technology, but there are more effective and reliable ways to get 200+ horsepower (GZE/GTE or if you want to keep it NA: the S2000 engine)

[NoHachi]

Worthless engine in a AE86. These were made to push a tiny 500kg formula atlantic car, not a mastodont twice its size. Ask around about cars with motorcycle engines in them, they are just not competitive.

[20vWill]

NoHachi Wrote:Worthless engine in a AE86. These were made to push a tiny 500kg formula atlantic car, not a mastodont twice its size. Ask around about cars with motorcycle engines in them, they are just not competitive.

Semi-true.

Though with the right gearing, a Formula Atlantic spec 4AGE in an AE86 could be very fast on the right track. Very limited range of flexibility though.

Would definately be pointless in a road car since the powerband is tiny and at very high rpm. Low down torque is non-existant! They need a complete rebuild something like every 100 hours as well!!!

4AGZ(or T)E is easily the best high performance option for a road going AE86, but NA is just too nice.

[Johan]

Purpose built formula race motors do tend to have a narrow power band and are tuned for lightweight cars. True.
I'm pretty sure though that the owner of this car has that pretty much covered. If the lump was useless in, what, 800-900 kg of car it probably wouldn't sit there at all.

It's all about torque really, and were you can find it. Racy motorcyle engines rarely sport a capacity exceeding 1.000 cc.
Why? Even a lightweight bike would benefit from an increase in capacity Well in that case the size of the vehicle determines how big a motor You can design without sacrificing overall balance. Smart packaging is the name of the game and since a bike does weigh less it's OK to keep capacity down and make power with hig revs instead.
A 1000 cc capacity makes for a fairly small sized motor but no matter what they simply can't produce enough torque to thrust half a ton forward no matter how high it revs. Not as naturally aspirated anyway.
This Formula Atlantic engine is what, twice that size? Should count for something.

Sure. Power is probably to be found in the higher rpm band, but I do believe that this engine very well could produce just enough torque within a fairly usable revband to keep 900 kg moving.
This motor could very well have been fitted with custom cams and what not to adapt the powerband a bit for it's new and heavier environment. This we don't know.

Then again. I don't have the slightest clue to the specs of a Formula Atlantic engine. The car could have been built for show purpouses only.
But in my book only a true fool would transplant an engine that actually made the car slower, or less competetive, just because it's rare and good looking.

[NoHachi]

The Atlantic engines are setup in a way that makes for a very narrow torqueband, true. But this is even a problem when its in the formula car, they still have to use high gearing etc to keep the engine on the boil. Its not something u can easily change when you build it into a Ae86.
The torque loss through a formula atlantic powertrain is also tiny. Lightweight wheels, differential, axles etc make a real difference. As does the absence of the greatest rotating mass: the propshaft.

I have built an engine for a formula car from scratch before, trust me, it is just not something you'd want in a streetcar.

[PetzK]

Fake!
Because:

- No dry sump in that AE86
- standart ignition (F.A. has DIS)
- No ITB's
- distributor block at oil pressure sensor is probably only for supplementar oil pressure gauge

this guy just adapted the FA valve covers....

Later,
P

[ZaX]

Hm, how 'bout this one? It uses standard ignition.



Or this one Toda racing, no DIS, no dry sump, only ITB's