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http://www.youtube.com/watch?v=SZcxS2pQiM0

you probably have seen this video... the old guy from TRD did it with the 16 Valve 4AGE... any of you here knowledgeable in tuning a 16V Head 4AGE engine this way? I was thinking that the valve cover on this video is just fake but it actually seals a 20V head... can that be a possibility?

is it possible that development after racing a 16V head with a 10000RPM limit gave birth to the 11000RPM 20V head? or its just that i am exagerrating it?

Hope you can help me with my curiousity...
Thanks ID Forumers!

that video is amazing

I am not a 4ag guy, but some serious money was dumped into that engine alone, my guess is ~$10,000

and come to think of it

please stop making these references to initial d

I personally have never seen or heard of a 4ag getting 11k RPMS outside of the CARTOON

This post has been edited by backalleyracer on Nov 7 2008, 11:47 PM

^ Pretty sure those formula atlantic engines come pretty close and godamn yes $10k and upward for getting so much power out of a bigport. The diminishing returns line for the 4AGE is massive for N/A tuning D:

A friend of mine had a built Corolla that revved to 10k with a 20v 4A, but some guy cut him off in traffic and he rear-ended him, totaling it. He currently has another one in the works. Not sure what all he had in the engine, though.

I want my SR20DE to do that one day...


...damn rocker arms!

Don't listen to the other guy, make any Initial D reference you want.

^
when you want people to take you seriously, referencing a cartoon is not the right way to go

yes we all love it, but most people would rather separate what goes on in the manga/anime to what happens in real life

This post has been edited by Sensation! on Nov 9 2008, 02:30 PM

Take this as advice.

I never heard of a 4AGE going 10K RPM...Though I doubt you need THAT much power...

^Exactly, especially considering that the 4AG is an economy engine. Higher revs= higher compression ratio= higher octane gas needed.

Unless you WANT a daily driven high-power 4AG for the track, don't even bother. To get the 10k, just get a 20v or do something stupider like an F20C.

And if you really want more power out of a 4AGE then it's a hell of a lot easier and cheaper to go with forced induction

You have 87 posts. Please STFU and rethink what you're saying.



As for the revs, I know the Atlantic engines had a limiter at about 11,500rpm, if my memory is correct.

(USER WAS WARNED FOR THIS POST)
  - Details: Warning has been issued to this post by Tessō on Nov 10 2008, 07:40 PM.
  - Reasons: Flaming

Go out, call toyota and buy a Formula Atlantic engine.

Or, take a large fat wad of cash, and your 4age 20valve to cosworth racing and have them make you one.

There is no cheap way.

Really? Look around more. Ive seen instances of them being pulled to 12k making 250ps.

Could it be a possibility? Sure. Likely? Not a snowballs chance in hell. its a 16v motor, plain and simple. The 16v engines actually do better at high rpms than the 20vs do. The 3-inlet valves on the intake start to develop dead spots at those rpms. But whats with the concern of the head? When RPMs are a concern, the issue isnt with the head- its with the block.

Econo engine? Boy what the FUKK are you smoking? A 4afe is an econo engine. The 4age was THE hottest engine of its displacement and aspiration in its day. Id say its equivilant to what the f20 was when it arrived. But im sure thats an econo engine too. And high revs do NOT equal high compression.

And mattw, you need to take your own advice and STFU yourself. What does his post count of 87 have to do with what he said? What outcome would you like him to come to as he rethinks about what he said? No no, we dont want a curious individual asking initial-d related auto question in the auto section of an initial d forum. grow up.

This post has been edited by sideways on Nov 9 2008, 11:54 PM

Thank you, I actually reported him before I read this so please disregard it.

This guy speaketh the truth. Also 16v blocks are internally stronger for forced induction compared to their 20v counterparts as their pistons etc. are too flimsy for it.

Also want a list to make your very own formula atlantic engine? It will closely resemble:

taken from http://shell.deru.com/~sgn1/AW11/4agetrd.htm

Half right. All the 20vs use a 7 rib block, which is thought to be the strognest of the blocks (They switched over to them around in 86-87). And the silvertop 20vs actually use the same crank and rods as the Gze supercharged 4agzes, just the pistons are swapped. Blacktops are a different story, with both lighter rods and crank.

btw badass read on those specs.

Even though he did flame there, still not a bright idea to make a reference to Initial D. It might/will make you look like a ricer, no lesser.


Anyways, some serious sh*t must be put in to actually make this thing withstandable to the 10K Punishment, since the only ones that can is the engines of some SELECT sport bikes.

*Cough*Hayabusa*Cough*

FYI, most sportbikes go well over 10k. Most are in the 13-15k rpm range.

And yet it sounds like it's only doing at least 8000 RPM while trying to throw you off.

yep sorry blacktops I meant. Will have one in soon though Just need to source and modify a C56 trans

formula atlantic makes 240hp at 8400 and redline is between 10-12k rpm.
Nice


honestly, 5 valve isnt really that good, and its even worse at high RPM.

The basic at building a high revving engine is balance.

Easiest way to get high rpm is squaring the rod and stroke ratio, because that balances the engine internals. also the lighter the better. knife edging the crank will help, so will a windage tray

Headwork will include dual spring valves and stronger components. ss/titanium valves and non titanium retainers. port polish and 3 angle valvejob.

You dont need high CR to get high revs, but if you want power, then youll need a high CR, so its kind redundant, lol

Cams, obviously high lift/duration will help you get power too. so will ITB's or a single runner setup.

free floating pistons will be your best friend. if you dont have oil squirters, get them.

And you idle will be high (1-2k) lol


If i missed anything feel free to add

IMPORTANT!

Because valve float at 11k will destroy your entire valvetrain.

And why not a 5-angle job?

You could, but if this is a street engine, I'm not sure youll need/want the full 5 angle job. It'll wear the seats quicker with the 5 angle job. its the same reason I said no titanium retainers, they wear too quickly.

If you didnt care about longevity, I'd say build the thing to F1 specs.

If its a street engine then why build it to 11k RPM? Last time I checked, Formula Atlantic engines were designed to run a maximum of one season, but its all in the tuning and how aggressive he drives it.

*slaps EA99*

You stealin' my engine again =P

C56s Trans, there are a few half cuts with the PFL AE111s and AE101s around so C56 shouldn't be too hard to find. Depends on your location too I guess mate =|

4A-GE reaching 10K+ have seen before, both 16V and 20V can do it though 20V requires a lot of work and $$$ because its an ass lol, its just naturally more expensive to work on the 20V than the 16V.