4AC 4AFC questions?

[KAWAII_hachi_roku]

ae82 and ae92 have 4afc twincam carb engine. ae86 has sohc carb engine that is rated at same power i think. is this true? what other cars was 4ac sohc used in? why did 86 not use 4afc twincam 16?

[rthy]

ae92 4afc's was 88> onwards
which would explain the ae86 83> onwards

[mattysshop]

that is like asking why toyota don't make the celica's RWD anymore.. the technology wasn't really around then.. and plus a major reason why Aussie didn't get 4AGE sprinters.. 1986 was when we first got unleaded.. 4age's do not run leaded.. they um.. die.. thats why you'll see most older cars with thier original engines need to run a lead substitute.. the vlave seats are actually ok in most jap motors and they can take normal unleaded petrol.. and the first 4AGE we saw was in 1986 in the AE82 twinky... thats why australia didn't get half the good jap motors till after and we still don't because of our shit fuel..

like the old school toyota's.. 18RG, 2TG, 3TGTEU, all these motors were in jap celicas/corollas/carinas etc but we got the crappy, asmahtic 18RC, 2T/3TC etc etc.. single cam, single carb versions.. same goes for the AE86...

[flamingheads]

I think the 4af engines are the economy versions of the 4ag's, so I guess they just replaced the 4ac's.
I also think in the AE92 it was a 4afe, an efi engine with less power than the 4age that had better mileage or something.

4acs were used in all the corollas of that age, ae82, ae71, ae86, maybe the early ae92s. Just not the ke70s.

[flamingheads]

Yep. Here it all is: http://en.wikipedia.org/wiki/Toyota_A_engine#4A

[poh_86]

dont get confused the 4ac by 4afe the 4af packs quite abit of power.. nothing great over 4,500 tho, but still punchy

[mattysshop]

i have an AE93 (late modle AE92 shape) CSI twin-cam.. 4AFE 5spd.. it goes great with a set of new sparkies, air fliter and changed the rear muffler.. gets 600km for a full tank... thats pretty dam good considering it has a 50L tank.. and thats not even when the fuel light comes on so it's still got at least 10L left!..

the F heads are designed for economy and driveability.. as poh said befor.. there pretty grunty down low.. good to put around town with... the G heads have the wide angle valves, bigger cam profiles, inlet and exhaust port changes all keeping in mind mid-top end outright power.. these engines are the sporty ones http://www.ae86drivingclub.com.au/forums/emoticons/wink.gif take a look at the latest generation twin cams.. standard corolla has the 100kw 2ZZ-FE.. the sportivo corolla has the 147kw 2ZZ-GE and boy.. you can tell when it comes on lift (vvt-Li) it torque steers into the next lane!

[flamingheads]

the sportivo corolla has the 147kw 2ZZ-GE and boy.. you can tell when it comes on lift (vvt-Li) it torque steers into the next lane![/b]
ET Pulsar style http://www.ae86drivingclub.com.au/forums/emoticons/2thumbs.gif

[Rex_Kelway]

why did 86 not use 4afc twincam 16?[/b]


This is a truly great question...

It all stems back to 1935 when Toyota began designing the AE83. They actually manufactured the car with a 4.3L 4cyl petrol, it was far too powerful, and very drifty, however when they consulted Toyota's tarot reader in the psychic engineering department she foretold of massive casualties due to driftosity expansion.

For this reason the AE85 used a 3A-c, she was convinced that a 1.5 Petrol engine was a safe.

The public backlash was horrendous, they called it a 'dry-salmon', and 'stringy-lizard'. The lizard, with the scales, being wholly unpleasant to remove post-anal insertion.

So the board of directors insisted to old Tarot lady insisted that there had to be an acceptable medium between fishes and lizards, and the detuned 1945 aircraft engine 4AFC which powered the car to 400 seperate podium finishes.

This was the AE86-4A-C, an extremely complex amalgim of the 3A SHOC head and the 4AFC's 1.6L block.

The public applauded the efforts of Toyota with massive sales of 18,000,000 units. Thy had sucessfully engineered the perfect car, a perfect mix of stern power-output and safety.


Like Rex said, a truly great question...Just ring Toyota and ask them, make sure you ask the Secretary in the office, she'll know for sure.


Please dont anger!.?

[damo101]

thats why australia didn't get half the good jap motors till after and we still don't because of our shit fuel..[/b]

maybe thats y fuel is still cheap here compared to other countries

[roadsailing]

rex, that was a good one, even for rex.

[slydar]

fun has been had. lets let it die. simple answer is the 86 predates the 4af.