Write me a shopping list for a 300kw 4AGTE!!

[l1ttle_d3vil]

No, I haven't won Lotto but for some reason I'm considering what options I've got to get 300kw atw from a 4AGE turbo..... While this is pretty doable on 7a block + blacktop head I would rather stick with the current 16v 4A setup I've got athough it seems a bit more difficult to reach when using this setup. No idea if I'll ever do it at this stage, but I'm just looking at all my options options for now, starting with the block and head.
My current setup is a completely stock AW11 4AGZE low compression block + bigport head with TVIS. Decent fuel pump, 550cc RX7 injectors, 2.5" exhaust and Link G3. Haven't stripped the engine down to inspect it as it cost stuff all to begin with, but my dyno tuner has said it sounds very happy with not a noise from it.

* Firstly, is a 4agze block and head likely to handle this sort of power or are aftermarket internals etc a definite? From what I've read it should be fine, but I did read that on the internet

* Would it be possible to achieve this power using the stock head? The common mod on high HP 16v setups I've seen seems to be mass headwork so am I definitely looking at extensive headwork to achieve this? Or will a stock 20v Blacktop head be sufficient? OR will a stock 16v head cut the mustard, I've got a feeling it wont...?

* Would the Blacktop head help spool the turbo much better than a 16v head? Current turbo (t25g) is on 12+ psi by 4000rpm, obviously a larger turbo will have more lag but would like to keep this to a minimum.

* From what I've read 550cc RX7 injectors should make it, although the fuel pressure might need to be bumped up a bit, correct?

I don't want to go down the 7A route, and while I would like to stick to the 16v head I'm wondering if it might be better to chop up my firewall and just use a 20v Blacktop head, depending on the advantages.

That will do for now, will no doubt have more questions later on.

Cheers
-Matt

[TRD_ZERO]

Why are u wanting to cut the firewall for a blacktop head. Is it because of the dizzy. If so just go wasted spark. I wouldnt go over the top on headwork. Just research a good set of cams for wat ur after and that should point u in the right direction. Look at that red dx wagon thats from speedsource. Get ideas from that car.

[mjrstar]

I'd say it's unlikely you'll make 300kw on the 550's. You'll be looking for something in the 750 range to be safe.

I'm also thinking it will be a lag monster due to the turbo size required to make that power.

No doubt Barry will be along with some more useful info.

[QikStarlie]

sadly a blacktop head will be far cheaper and easyer to get that kind of power

if your going down the 16v route, i'd start with a smallport head. then get someone who know what they are doing to set it up with a decent set of cams and head work. then id be building a good inlet manifold to suit. shorter runners than stock, bell mouths, tapered runners etc.. if all done right should be getting you up there. dont forget you'l need to be reving it quite hard with this setup. so an old stock bottom end wont be loving it too much


as above 550's wont cut it at that power, need something bigger, or 8 injectors staged, g3 can do this quite well.

[Crampy]

Gasman had that much power in his AE92. Do what he did, easy.

[gasman]

Gasman had that much power in his AE92. Do what he did, easy.

it was honestly too easy.

you shouldn't be needing to cut the fire wall with a 20v head just run wasted spark and get one of bazdas caps for the dizzy. my wasted spark conversion costed about $60 to do but i didnt get a cool cap for mine.

[matt dunn]

Gasman had that much power in his AE92. Do what he did, easy.

Yeah at 32psi !!

Him and 4agtepwr nseem to be the only two that have made it past 300kw, and from speaking to 4agtepwr, it does not seem an easy task to make it reliably, and i'd imaginge it would not make for a good road car with massive lag and requiring a lot of boost or RPM's.

[cat007]

Did you add 'buy a lotto ticket and then win to support such a feat' ?

[Bazda]

Even with a Blacktop head on a 4agze bottom end you need some decent amount of boost to get that power and decent fuel.

If you modify the head then it should be alot easier. I would still start with a blacktop 20v head, get over size valves put in there, dont need any porting, just doing the OS valves 1mm will net you near 25% gain in flow with out any porting. But you still will need a fairly big turbo for a 1.6L. There will always be alot of lag.

And yes the BT head will spool the turbo faster. Esp using the VVT, that helps a considerable amount.

Go the 7A, I have some custom made h-beam rods to suit a 7A conversion for $600.

[Crampy]

Why the need for 300kw at the bags anyway? Is your car not fast enough as it is?

That much power on a car as light as yours will be pretty crazy.

[mjrstar]

^^Agreed, chasing a specific number can lead to a car with some pretty bad manners..

[escortman]

^^Agreed, chasing a specific number can lead to a car with some pretty bad manners..

yeh why are you after so much power? apart from saying i have .... kw atw. my old fx never went on a dyno but id say barely had 150kw atw and it went pretty well.

plus i cant member what diff/box your running but you'll have to run w series and hilux to support that power

[lowglrolla]

have a nosey at the specs. pics i took on a trip to england last year

[rollaholic]

im pretty sure he has W box and G diff already

seems like a lot of power for a street car!

[3T-Rona]

Shopping List:
-Milk
-Eggs
-Bread
-300kw 4AGTE
-Tampax
-rubbish bags

[strx7]

Shopping List:
-Milk
-Eggs
-Bread
-300kw 4AGTE
-Tampax
-rubbish bags

[l1ttle_d3vil]

Shopping List:
-Milk
-Eggs
-Bread
-300kw 4AGTE
-Tampax
-rubbish bags

No toilet paper? Been trying to find the performance car issue with the red DX wagon in but my copy seems to have gone walkies...

Pretty sure 4agtepwr was running same injectors as me with 305kw on 23psi, but with a modified fuel regulator, must still be very close to maxing out though. That was with a smallport head too, looks like I've got the worst head possible I know there will be a fair bit of lag, but the setups I've seen are up to 15 - 20psi by 4500 - 5000rpm which isn't much worse than my current setup.

Purpose of this is definitely not so I can say "i have xxx kw" otherwise I would just slap on the biggest turbo I can find. Instead I'm trying to see if there are ways to make it reasonably driveable. Car probably gets driven at the drags more than on the street anyway, and there are always ways to get the power to the ground.

Thanks for the info though - has given me a better idea of whats possible with the various mods.

[Bazda]

With a 16v head and that power you wont get full boost until 5500rpm.

[Flannelman]

Shopping list... As a guide for what I would be looking at doing

Crack tested, mesured for straightness and lightened crank (if it can be afforded nitrated)
ARP stud and nut kit (for the mains)
Good quality berings, oil pump
Good quality rods/pistons/rings (aim for no more than 9:1 compression)

BLOCK
Cleaned, cracktested. Measured for straightness (bores and mains) Intenally deburred and smoothed. Oil system modified for improved flow. Hone/bore (whatever is needed). Decked and cleaned again.

HEAD (where the horsepower is at)
Cleaned, cracktested.
(16v) Bigport needed for 300+kW
(20v) Be it Silver or Black. Oversized valves (for machining and valves) set you back $600 on its own. Port work (heavily on the Silver/light on the Black - if a Black is better than Silver)
Surface skimmed for Good qualitly head gasket.
Cams of around 270-275 duration
Good qualitly valvesprings (VERY IMPORTANT)
ARP Headstud kit

And of course

Good turbo set up... I dont know exactly what one. But the exhaust will need to be at least 3 inch.

Tunable ECU, and fuel system upgrade needed too, but thats already been covered.

Hmm, maybe this should be a wish list??

[Crampy]

Pretty sure 4agtepwr was running same injectors as me with 305kw on 23psi, but with a modified fuel regulator, must still be very close to maxing out though. That was with a smallport head too, looks like I've got the worst head possible

His smallport had a $hit load of work done to it though. Best beat would be start with a Blacktop head, as Bazda said.