The Magic 300 1jz

[ReQuieM]

Hey guys

Lots of talk about the magic 300 RWKW for the 1jz, question is tho, what does it take?

Theres a guy on supra forums claiming to have 279rwkw with F all mods, basicaly BPU's (no IC upgrade tho) and 18psi through steelies. Hopefully he's reading this and can elaborate more.

Why am i asking? well its always been my dream to put down 300. why? because that makes it a real weapon. but still streetable, and well why not? ya need a goal eh!

My plan was: bored out exhaust & intake mani, custom plenum, matched port head, adjustable cam gears, 26x in cams 272 out's, big FMIC, free flowing dumps and exhaust, steel wheels "hiflowed" (such a NON descriptive term.) with enlargened waste gates and aftermarket computer.

Thats what i plan, anyone think i'll make the magic 300rwkw? I'm staying with the CT12a's for discression more then anything, and them maybe cost second! A pair of ct24's would be a nice idea too!

Anyone have some of there own home brew ideas on make the quite asthetic 300?

[mullett]

Easiest way: Big single, microtech, FMIC, injectors, exhaust.

That being said, it'll be a pig to drive. For the cost of rebuilding and hi-flowing turbos, I'd get my hands on a pair of small BB jobbies (maybe a couple of 2nd hand T28s?), and work from there....

RM.

P.S. That's actually a shitload of power.

[30psi 4agte]

it funny how things change and the bar keeps rising. it was about 5 yrs back that 200rwkw was the MAJIC number! now 200 at the reas is a walk in the park!!


Anyhows with those mods you should be safe to say that its possible. the only prob i see is the stock turbos even high flowed they may struggle ( not that it cant be done)

300rwkw is nice to have but not all that easy to achieve

[EldarO]

1JZ will hold 600hp on factory internals, so theres no need to go inside the engine at all, i wouldnt even touch the cams either.

factory turbos wont handle anything near what you want, so your stuck with either optioning for a TD06/TD07 (i.e. big single) which will thrrow your streetability straight out the window with a rocket up its arse, or go for a pair of upgraded twins.

FMIC is necessary, Exhaust is also, however, all this machining and crap you mentioned isnt needed, adjustable cam gears will be a bonus, and i think its pretty safe to say you'll need an aftermarket management jobbie to tell it all what to do, maybe a Microtech..?

Whatever you want to do, you about to spend alot of dosh on it, so spend a few weeks doing alot of research, seeing what works well for other people, and make a decision from there.

for example, if i was planning on making 400+ rwhp from my 7M, www.7Mpower.com would be the place i would be looking at very closely, see if you can find something similar for the 1J, and dont be afraid to ask alot of questions, although do this AFTER youve done your research to minimise the number of easy questions.

Eldar.O.

[SL666]

i would guess that 300rwkw through a manual would be right on the limit of pump fuel too..

unless you went to a very lop-sided turbo which would suck for drivability..

actually i seem to remember 'slylux' making 397hp which is just short of 300rwkw with a big single, injectors and computer...

[chris davey]

Requiem stated that he wants to do it on modded ct12a's. I don't know if it is possible but I suppose we will see

Cams will definitely be needed to push that power on those turbos. The stock cams are designed around the small turbos which have minimal lag and the power drops off in the upper rpm ranges. To make this power, I think you will need to be able to rev it very high. There are guys in the SF.com cams group buy who have said that they are aiming to rev to 10k+. This is with aftermarket cams, retainers and valve springs. (Stock valves AFAIK) I think you will need to be around 9k.

Do not try and do it on pump fuel. I can see it ending in tears. Use some sort of decent fuel or additive. I just bought some martini super boost which from tests (not done by me yet) has proved to work very well and for $20 odd a bottle to treat 60L it is damn cheap too.

I am biased now but I would get a microtech for the ecu side of things. There are certainly other options but they have the results on the board and can be used with the stock coils which have been used in many high HP applications. I just wish mine would turn up some time soon

Hope that helps

Chris

[tyottsoarer]

Ah yes I was at this very same place not two years ago… the memories. I went the single turbo route and the drivability isn’t that bad through the garrett gt3040R and SAFC II. But it does cost $$ to get there.

[mullett]

Maybe not an option, but maybe it is. If you want to keep a factory looking motor, and still turn big numbers, maybe a 2J conversion is the way to go...

RM.

[ReQuieM]

Well to be completely honest the end result was going to be some where down the track, It's certainly not gonna be in one big hit. Yeah I realise all the machining was going to be alot but I wanted to see if anyone would be able to say yeah definatly with that. But basicaly I could custom the S out of it and still no one would be able to tell me either way. Thats not a rant by the way its just hard to get a lot of definates when it comes to modding the 1j in other ways then 'just bolt on a big turbo'.

'Scuse the ignorance but why wont that be do-able on pump fuel? I mean if a big single on pump can do it why not the small twins? (if in fact they could do it at all!) Is the mixture just gonna be too hot? I was thinking for HP hero days/drags/what ever of building a AL. contained around the FMIC end tanks and filling with dry ice. that would drop the intack temps like a MOFO. I realise I'd need a seperate tuning map for it but it might go a fair way closer to caining the 300rwkw mark.

About to get a PFC actualy, not the best but probably the best for what I want. Need cold start ect!

Ok so maybe ditching the ct12a's for a pair of ct26 off a 7m be a good option? Tho I've heard one on a 7m is only good for 14psi... would that be the same for 2?

2J no thanks, I wanna do it in the origi-dig engine! did consider the 1.5J tho but acording to manny the ct12a's ($5k customs putting out 330rwkw) choked the engine and he lost about 30-50rwkw. so the the 3lt isn't an option unless the turbos go.

Thanx for the info so far guys! hope theres some more pearls of wisdom to come!

[30psi 4agte]

i say you can make the 300 on pump fuel provided everthing else is up to scratch !



ctg26 is the way to go and high flow em!!

like i said 300rwkw is easy to say but you will prob find when you first dyo the car hoping for these numbers you will fall well short!!!!!!! it is from here in in that the tweaking and sorting out of the glitches that the true potential can be unleashed

[JustCallMeOrlando]

Ok so maybe ditching the ct12a's for a pair of ct26 off a 7m be a good option? Tho I've heard one on a 7m is only good for 14psi... would that be the same for 2?

Dude, get a proper turbo. Sure, CT26's will make that power, but there won't be anything before 5000rpm. They're old technology and it reflects in their efficiency.

[BlackSupra]

As mentioned above, the single turbo is the way to go.

After witnessing the new evolution of sico1j at the nationals, that thing is well scary and comes on boost hard, makes over 300rwkw and runs a GT35 (if i remember what andrew told me).

Still very streetable.

Im of the beleif the stock turbos will be teh suck chasing that power.

Maybe look at the twin HKS jobbies designed to fit under the factory heat sheilding.

[SL666]

custom low-mount manifold and some stock looking heat sheilds.. remember that a cop isn't going to know whats supposed to be there and whats not anyway... and having an un-engineered intercooler is enough to defect your ass anyway.. go to a medium/big single.. gt30 (i think thats what the hilux made nearly 400rwhp on) still with heaps of low down..

im actually looking forward to a big single boosting later..

[Pimpin_1JZ]

I am running a big single turbo an Innovative Turbo Systems (ITS) 60-1 turbo. The rear housing I'm using with mine is a bit smaller than that of say GT30/40's and the like, but has still enough there to make the numbers it is a 0.48 or a 0.49 housing to be exact. It makes full boost at about 3,250 - 3,500 which is 18psi at the moment which equated to 275rwkw. This is the max I could go on 2JZ 550cc injectors and standard pump. It also has the accomodating mods like Hybrid FMIC, 3" to 3.5" exhaust and also runs a EMS stinger 4 computer. With 1800 foot pounds of tractive effort it makes it alot of fun and is in no way a pig to drive. It will soon be recieving a new pump and will be wound up to 22-25psi and should make about 315rwkw.

Hope this helps...

[cressida_1jz]

As mentioned above, the single turbo is the way to go.

After witnessing the new evolution of sico1j at the nationals, that thing is well scary and comes on boost hard, makes over 300rwkw and runs a GT35 (if i remember what andrew told me).

Still very streetable.

Im of the beleif the stock turbos will be teh suck chasing that power.

Maybe look at the twin HKS jobbies designed to fit under the factory heat sheilding.

Actually,Andrew drives that everyday to work.Its a scary car.Not scary,fuckin stupid