4ac tuning

[hadrian]

Has anyone modified their 4ac? (or know of someone who has?)

If so, can you give me some details please? I can't afford a 4age conversion so I want to get some more horsepower from my 4ac.

Any help would be greatly appreciated as I can't find ANY information on modifying the 4ac (other than using a different carburetor.)

[Dxaqta]

save and get a 4ag!!!! i think the fact that u cant find information about tuning a 4ac, shows that no one has wasted thier time or money on it.

cheer mate

[hadrian]

mmm but i also want to modify the 4ac because it seems not many people have done it.

[Dxaqta]

dont waste ur time

[Wally]

Originally posted by hadrian@Feb 19 2006, 08:50 PM
mmm but i also want to modify the 4ac because it seems not many people have done it.
whats the point?...

the 4ac is shit? http://www.ae86drivingclub.com.au/forums/emoticons/laugh.gif

[hadrian]

OK thanks for both of your advice

[rthy]

i think someone managed to get 83rwkw from a 4ac...

but yea, 4age would have been better

[riceburner]

Just supercharge it.

Search it's in a post somewhere on the older toynods forum i think.

Apart from that, cost wise, not likely to cost less then a 4ag.

Non crossflow head doesnt help either. But they are a tough little motor, can take loads of abuse.

Well mine did anyways.

Cheers

Steve

[flamingheads]

I thought of tuning the 4AC, but it seems so pointless.
Stick a cannon on, paint the rocker cover black and paint the car panda. That should add a few horses http://www.ae86drivingclub.com.au/forums/emoticons/wink.gif .
But a tuned 4AC would be pretty cool, if you had the $$$ to waste.
Didnt someone somwhere say they bolted a turbo onto the 4AC and it lasted about a week? You could go around collecting 4ACs, bolt a turbo and change the engine every week!

[Course_Out]

Ages ago there was a guy on rollaclub selling a fully worked 4ac, it was rebuilt from the ground up, with a big cam, balanced bottom end, ported, weber downdraught and i think it just matched a standard 4age for rwkw.

A guy i know turboed a 4ac (an old and tired one) that he had in his rally car with a suckthrough carby set up and a turbocharger of a diesel. It went good.....for a little while! The mechanic that helped work on it tells me its demise was more rpm related than boost related, with the guy swinging it past 8k regularly!

[hadrian]

Ok so tuning the 4ac is out of the question. How much for 4age 16V or 20V conversion including labour?


Thanks everyone

[Jason]

the search button is a great thing

[Monster]

May the search be with you!

Ok's as far as 4AC, my mate modded his to be a 'double pumper' it got dynoed at 46kw atw, there is a kit from USA (ive linked it somewhere in the general topics) that converts it to DCOE and comes with A cam, the end result is as much power as the 88kw 4AGE.

But yeah the guys are right, by the time you ass about, you could do a 16v conversion, budget no more than about 5k...

This topic has been covered many many times!

[rthy]

last time i checked it was 3>4k for a bigport drive in and out conversion... but this was awhile back...

[samuel]

Put 4AC in the bin, purchase 4AGE

simple

[Joel-AE86]

Stick with the 4AC, get good a driving it and drifting it, then go up to some more power.

With lots of practice, I can keep up with a 4AGE sprinter through the hills in my 4K-C KE70. I have just suspension mods with nothing too spesh.

Spend your cash on suspension. Its the best bang for buck imo in any Corolla or Sprinter.

[samuel]

Haha, a Sprinter is a Corolla http://www.ae86drivingclub.com.au/forums/emoticons/wink.gif

But I agree... Suspension, handling & Braking first. Then work on more power.

[Joel-AE86]

Technically in Australia, the Sprinter was NOT a corolla.

Despite the fact that its called one in Japan and has the *E** Model number (common for all Corollas)...it was never once called a Corolla.

http://www.ae86drivingclub.com.au/forums/emoticons/smile.gif

[hadrian]

Oke Doke then. I'm just so bored of the 4ac.

[Shiri]

Yes! Finally a thread for me to learn on how to modify the shittest engine ever put in a toyota so i can get massive street cred!

[RobertoX]

4ac's are tough litte motors, learn to drive with it, have fun, a good set of pipes and a carby and a slighly longer duration cam would go ok, but as everyone has said, just get a 4age

[RobertoX]

im quite enjoying my 4ac...seems to hold up with track work ok

[KAWAII_hachi_roku]

4ac is great learning engine because of its power delivery.
it is waste of money to modify 4ac unless you are a super millionaire.
get 4age power! yes. let's enjoy 4age!

[HiroshiFumi]

im thinking of taking off the stock air filter and put a flexi hose, then connect it to a pod filter http://www.ae86drivingclub.com.au/forums/emoticons/huh.gif

would this do anything?? make a cooler intake noise?? http://www.ae86drivingclub.com.au/forums/emoticons/rolleyes.gif

[Joel-AE86]

Originally posted by ShiRi@Feb 24 2006, 02:03 PM
Yes! Finally a thread for me to learn on how to modify the shittest engine ever put in a toyota so i can get massive street cred!
massiv forum disrep to you son.

I agree that a 4AC isnt some sickass powerplant and that it shouldnt be modified...however I believe a 4AC has ample power for the beginner to learn in and learn to control.

Come to Adelaide and many can show you that a 4AC powered car can outrun many a fast nissan in the hills and hold its own on the track.

http://www.ae86drivingclub.com.au/forums/emoticons/smile.gif

[dori_86]

having a stock sprinter i was mucking around in the hills with a sprinter stock but 4age'd and i kept up pretty well

[Blood Child]

i'm not sure what the previous owner of my daily did to it, but the 4ac in that was the most responsive lil bugger ever. i might put it on the dyno when i get it going again