Max a 16v 4AGE can be tuned to?

[david]

blacktop 20v
toda 304/304
toda valve springs
toda campulleys
toda headgasket
stock bottom end
engine management

approx 180-190hp if everything else is right

please try to use a 16v to obtain the same hp at this price

with an experienced engine builder and a big budget I would say 250-260hp is maximum possible for both 16v and 20v

turbo? I've seen over 500hp on a stock gze bottom end

[Bean]

david Wrote:blacktop 20v
toda 304/304
toda valve springs
toda campulleys
toda headgasket
stock bottom end
engine management

approx 180-190hp if everything else is right

please try to use a 16v to obtain the same hp at this price

with an experienced engine builder and a big budget I would say 250-260hp is maximum possible for both 16v and 20v

turbo? I've seen over 500hp on a stock gze bottom end

slap the same setup on a 16V with high comp pistons and some small changes to the intakeplenum (cheap ITBs) and you should achieve the same power - pistons and ITBs should be cheaper than the 20V

and there are others than Toda out there

[david]

Bean Bandit Wrote:slap the same setup on a 16V with high comp pistons and some small changes to the intakeplenum (cheap ITBs) and you should achieve the same power - pistons and ITBs should be cheaper than the 20V

and there are others than Toda out there

you say buy high comp pistons and ITB's, that would make the 16v more expensive to build
you would also need headwork done on the 16v, add that too the cost
20v will flow 200hp without any headwork done
and the bottom end will withstand 200hp

sure you will get 180-190hp on a 16v with 304/304 cams but it would cost more than building a 20v

yes I know there is others than toda, but toda is great and that's why I use them

[Uzelac]

You are forgeting silly little thing called start cost .
BT is like 1000e more expensive and needs fabrication to get into AE86 chassis. Just for putting in an BT in Hachi you can get pistons, cams or itb's.

Of course, noone sane would swap an BT with 16v, but if you start with 16v, and we all have bluetops at the begining, i think it's better to crank up 16v.
Swapping to BT and then tuning it is most expensive option.

[Bean]

Uzelac Wrote:You are forgeting silly little thing called start cost .
BT is like 1000e more expensive and needs fabrication to get into AE86 chassis. Just for putting in an BT in Hachi you can get pistons, cams or itb's.

Of course, noone sane would swap an BT with 16v, but if you start with 16v, and we all have bluetops at the begining, i think it's better to crank up 16v.
Swapping to BT and then tuning it is most expensive option.

couldn't say it any better - learned it the hard way on my S-body

[heshan]

Quote:BT is like 1000e more expensive and needs fabrication to get into AE86 chassis. Just for putting in an BT in Hachi you can get pistons, cams or itb's.

Uzelac do you know where I can obtain these 3 items? I.E. Pistons, cams and ITBs?

Also what's the max Cam size which I could use to gain max HP and still keep the daily driver status ?

[Uzelac]

heshan Wrote:Uzelac do you know where I can obtain these 3 items? I.E. Pistons, cams and ITBs?

HiComp pistons - Wiseco, Arias, Toda, Mahle..
Cams - HKS, Toda, TRD, Catcam, Webcam..
ITB - you can go from "stock" ITB's from newer Corolla or any other ITB/carbs (bikes, other cars, as long as it is from inline 4 engine, it can fit)

heshan Wrote:Also what's the max Cam size which I could use to gain max HP and still keep the daily driver status ?

There are many topics discussing this issue on this and many other forums. No one can tell for sure which is street drivable and which is not. I don't know from personal expirience, only from other peoples writeups, but it seems to me that anything above 272 becomes problem for every day use. 250-260 is what seems as best setup for daily driven car and 300+ is track only.

Search and read and try if it is possible

[heshan]

awesome.. Thanks Uzelac.. I'll do some research on the drivability issue with the increase angle.

[panda_tureno86]

love these topics about how to build a 4AG...

The early bigport 4AG can flow the most hp out of all the 4AG heads.
If you are planning to build your blue top.
I would suggest you get yourself a 7 rib block.
Internal of the early model 4AG are not strong.

If you want a cheap way to build a 16V
I would suggest you do following
a silvertop bottome end.
Use it's crank and rod.
Its strong enough to rev up to 9 everyday, providing you look after the motor properly.
if you are tight, then use some small port pistons. They offer a better compression than your big port ones. They are dirt cheap comparing to TODAs or other japanese brands.
You should note that running BIG cams on the 16V meaning you will need some underbuck and shim kit..... which will cost you AN ARM or your kidneys.
I wont even port out the bluetop, just give it a quick polish...
And then run some ITBs off a silver top.
Remember to shave your head and deck your block too to get a better compression, you have at least 7mm of valve clearance.
Doing all that you will be lucky to get 150hp on your crank
(providing your cams are like baby cams)
you will be able to run stock computer that way.



I note that you guys have only 95 octane juice over there......
maybe its worth while running a black top after all.
it would be better off for you for daily use.
and it sounds awsome too

Anyway, good luck.... hope this won't turn into a project with a dead end.

[banpei]

david Wrote:turbo? I've seen over 500hp on a stock gze bottom end

True... I totally forgot about the 4AGZTE conversion:
http://www.aeu86.org/viewtopic/--twincha...6--/t/7958