Re-cored (bigger) CT12As vs a big single

[The Real Roadrunner]

what stalls do you guys run out of interest?

dieseltrain, i see your point but it dont think it would make that big a difference because if you were going for 300rwkw you would need bigger injectors either way so a factory ecu isn't useable (unless you run some signal benders which would be useable on a single to the same extent anyway).

ribfeast, there should be no need to change the engineers cert because the rta just look at the fact that FI is FI, doesnt matter if it has 2 or 1 turbo/supercharger.

the fact that it will be a shitload easier to work on would be the thing that swings my vote to the single option.

if your after 300rwkw with good response id opt for a gt3076r and be done with it. the costs involved would be similar and you would end up with a nice responsive package that would cost you less to maintain (theres half the components in there if something did go wrong).

cheers
linden

[EldarO]

AFAIK if it wasnt avaliable off the showroom floor (as an option etc.) it needs to be engineered.

i think the issue though is that you might get picked up on it, but only if they're picky, or have a reason to (it all looks psycho powerful and bling bling)

only heresay, as i havent read anything concrete, just what i got from asking around (more educated) peoples.

[The Real Roadrunner]

AFAIK if it wasnt avaliable off the showroom floor (as an option etc.) it needs to be engineered.

only heresay, as i havent read anything concrete, just what i got from asking around (more educated) peoples.

you are seriously retarded, as stated above if the car is engineered as being turbocharged then you can go for your life and put 20 of the damn things on and the state the car is regoed in wont give a shit (unless your in gay SA, in which case move to a better state just kidding)

cheers
linden

[A-man]

yeh im with roadrunner on that....

im sure a diff ecu and some cams and port of the head will get you some gains maybe u should leave the turbos and try get the hp in other areas...

[EldarO]

you are seriously retarded, as stated above if the car is engineered as being turbocharged then you can go for your life and put 20 of the damn things on and the state the car is regoed in wont give a shit (unless your in gay SA, in which case move to a better state just kidding)

cheers
linden

fair enough, thanks for clearing it up in the manner in which you did.

i wasnt aware that i stated that i wasnt sure.

[Dieseltrain]

Linden Im not using a stally....

Re the Turbo's////

If i wasnt going for twin high flows, i would definately go for the 30/76r for sure! Awsome turbo, good power on stock motors, and with a 3000-32000rpm stally, would be great on the street and get good numbers! Jampac is running one and his is so user friendly.

[Ribfeast]

What would transmission temperatures be like with that sort of stallie though? I went for a trip from Newcastle to the central coast, with some uphill driving to a paintball place at Kulnura, and the transmission got to 120-130 degrees! 100-105 on the freeway. That is with the radiator's built in trans cooler, additional trans cooler, and no stallie, carload of people, and not giving it a hard time.

[Xistant]

i'm going the GT30/40 route (GT3076 or GT30 blah blah blah etc etc) .82 rear housing
38mm Tial gate 1 bar spring
440 2jz injectors (already got walbro)
Emanage Ulimate (inc 3bar map and temp probe)
E-01 boost controller
trust manifold (modded to suit gate and turbo)
braided oil / water etc
i'm hoping for 300rwkw's but i ain't going to get it with a heavy duty clutch and 440's fact.
but at least i won't look like a diesel driving down the road (smoke)

reason why i'm going single, not only is it cheaper in the long run, its easier to work with, clears up alot of room in the engine bay, looks better than the stock maze.
another factor is the twins failing more often than not with anything above 1bar (more conclusions are seeing the stock dump as the issue) do i think its worth it? fucking oath.

but like all performance upgades if it costs this much then double it to get it done by a mechanic or take your car off the road and do it yourself.

[MR 1JZ]

sorry to bust teh bubble ribfeast but you need new water and oil lines to fit the BB cored stockers...I spoke to GCG about doing this for the 2JZ in my aristo and they wanted $5K, 2 weeks and my stock turbos to make it all happen...

hardly worth it IMO

go the big single

do skids and be happy...

[twentyEight]

Get yourself a 6BOOST manifold then you wont need to spend the extra dosh on "making it strong"!

Then get yourself a GT3076R, wastegate, new lines, dp, etc...

I reckon you'd come in at roughly the same price as the path you're choosing, and you'll get a much better result...

[big wad]

i broke my twin,s and yesterday finished putting a gt3071r on my 1jz and all up it cost under $1500 . if your twin,s are still ok sell em now , the garrett has more power everywhere. i should have done it from the start. cheers bigwad

[Dieseltrain]

Garret might make more up top, but wont have no where near the response of the twins.

3071r is a smallish size for a 1jz though, What type of power at you looking to make Big Wad?

[Ribfeast]

$1500 all up? How?? Surely that doesn't include all the manifolds, piping, etc etc!
What do you guys find heatsoak like on the big singles vs the twins?
I find the twins heatsoak very badly, I only get 1 or 2 runs in before I have to let it cool down a lot. Losses are 20kW or more.

[The Real Roadrunner]

you need new water and oil lines to fit the BB cored stockers..

i thought this was the case also but wasnt sure if they use the stock cores and bore them out. actually lookin back at the pics it seems you are deffinately correct.

bigwad did his for $1500 coz he built everything himself, but unfortunately most ppl dont have that option if they dont have the equipment or some really good mates (you would have to get good price on all the parts too)

diesel, i believe its in a 4wd lux so he is looking for bulk lowdown rather than topend (but a 3071 should still get to 240kw roughly)

ribfeast. have you seen a cressy around newie with IMA01J plates on it, its maroon or burgundy.

cheers
linden

[Ribfeast]

Hi Linden,

I don't think I have seen that one in newy, plates ring a bell though...do you know him?

Cheers,
Braden