Twin charged 1uz in pickup

[Kiwilowlux]

Im contemplating Using twin sc14's on a 1uz with a hybrid intercooler.
With autronic sm4 management (when i can afford it). iwas hoping to get away with around 10-12 lbs of boost or what ever it takes to make around 450-500hp (flywheel). I know that these blowers are aan old design and are not very efficient but with the very large cooler design im hoping to get away with it.
Hopefully all this should be a pretty nasty combo in my surf (2wd chassis).
Any thoughts or other ideas would be great!

 

[Lextreme II]

Sounds like a challanging idea but possible. U can use piggyback ecu for such low boost.

 

[Kiwilowlux]

low boost?

Wow, 11lbs is low boost? Well it is really but into an enging with 10.5:1 comp it's not really that low. Anyway, do you think that it would produce good power? and what type of (piggy back) ecu would you suggest? any how is it tuned? Evreyone that i've spoken to use stand alone management and the sm4 represents some of the best quality.
THanks for your thoughts.
Will.

 

[Lextreme II]

10-12 is not high boost. Most piggyback should able to handle about 15-17 psi. Unless u plan to run over 20 psi, then standalone might call for. Autronic is a very good unit and at the same time its very expensive. I think about 2,500 USD plus other misc. Piggyback is about 400-500 usd.

 

[Kiwilowlux]

Could you give me some sort of idea what piggybacks would do the job as in the circle of friends i have we kind of steer clear of them due to some factory ecu's trying to self tune around them rendering them useless. I would be keen to run 20 lbs but with lack of room at present and not wanting to make a pair of manifolds im gonna stick with the blowers insted of turbos.

 

[Lextreme II]

I am using a piggyback called FTC1 (Fuel Timing Control) from a company in Irvine California called Split Second (www.splitsec.com) I am using this unit and work wonderfully and the price is about 550 usd. I has timing and fuel control. Most piggyback are limited on injectors size. This unit can control up to about 650 to 750 cc on the 1uzfe.

I have 550 cc and have no problem controlling it. www.lextreme.com/st.html Contact Split Second and ask for Mark and tell him Lextreme.com refer you. I also have few preset programs for the 1uzfe available to paid members.

 

[rac]

Hey just returned from a dyno day in auckland and was talking to a guy fromsome importing place in town he was telling me that after selling a lot of 1uz's that the customers who bought them couldn't use the factory wiring and ecu due to a lot of problems and lack of wiring diagrams. Is he just talking out his ass or am i able to get a diagram for this? I need some advice because i simply can't afford to use a stand alone.
this split second thing sounds like the goods.
cheers Will.
(kiwilowlux)

 

[nz jailbar]

you could try a link plus ecu avaiable on trade me for around $1500nz .they will configer it to suit before shipping.

 

[Toysrme]

It's the lb/m a turbo moves that's important. You take a small turbo, and the engine would make 50% less power than stock at 5psi, you take a large one, and you could split a block in half at 5psi. PSI is irrelevant.

I prefer singles, but in your case it will be both cheaper, and have better responce to go with two used, or rebuilt turbo's. I will say that you really need to pick a better turbo than an S14. There are better turbo's in the same price range - there isn't a reason to not take advantage of that fact.

A pair of t3 trim 60's, or super 60's (from the 2.3L mustang SVO) would be a perfect match.
You can buy them from yards for $25-50 all day long. Assuming they don't need new wheels & re machining - the rebuild kits are normally $70 on ebay *if* you need, or feel like rebuilding them.





If the engine doesn't come with the TCCU, obviously you need a standalone. if it has the TCCU - buy a good piggyback. You have no need for EMS at those power levels.



An SMT-7 should run the ignition by itself, It's fairly well the king of user programmable piggybacks right now.
An SMT-6 would be a better choice than the FTC1, or e-manage.

 

[MikeMan]

I would use a link+ for this application.

 

[rarson]

It's the lb/m a turbo moves that's important. You take a small turbo, and the engine would make 50% less power than stock at 5psi, you take a large one, and you could split a block in half at 5psi. PSI is irrelevant.

No way you're going to split a block at 5 psi. I'd love to see a 1UZ that is breathing so well as to flow massive lbm/min at only 5 psi.

 

[MikeMan]

Im contemplating Using twin sc14's on a 1uz with a hybrid intercooler.
With autronic sm4 management (when i can afford it). iwas hoping to get away with around 10-12 lbs of boost or what ever it takes to make around 450-500hp (flywheel). I know that these blowers are aan old design and are not very efficient but with the very large cooler design im hoping to get away with it.
Hopefully all this should be a pretty nasty combo in my surf (2wd chassis).
Any thoughts or other ideas would be great!

I would try and pickup a pair of Pulsar GTiR T28's and turbo that sucker.

Link+ or Haltech E8 would be plenty good enough for that combo up to say 8psi on a 10:1 engine.

With twin std throttle bodies and Kelford 207-S1 cams you should make 450-500HP easy.

Later on add a set of the group buy pistons (If there are any more available) to drop the CR to 8.5:1 and run 14PSI

 

[Toysrme]

rarson two things.
1) learn what you're talking about.
I'll reiderate... psi has nothing to do with anything. The mass of airflow the compressor moves is the only relative bit of information that is useful.

If you took a bobcat turbo and ran it at 20psi, you would have a 100-120bhp 1uz-fe. It's 22psi comming out of the compressor, but guess what... It doesn't move much mass.
Likewise, there is no limit to how high-flow of a unit you can buy.
There are pleanty of industrial turbo's that would split any gasoline car engine in half at 5psi, I'm sure if you hooked a marine turbo up from a huge diesel ship, you could split one at 1psi...

Again... PSI doesn't mean crap. The MASS of flow means everything.

2) Learn to read something in context.


No offince, but give me a break...

 

[Kiwilowlux]

Hi all, sorry i havent replyed in a while but im training to be a cop to it takes up a lot of my time. But im in the process of building a mk3 supra with a twin turbo 1uz. Im going to use 880cc inj twin gt35r's and an autronic sm4 with wiseco pistons.
We will see what sort of power this thing makes at 2 bar:bigeyes::eek1:

 

[Toysrme]

Twin 35R's?
If the 1uz can spin up the 68mm Compressor 56 trim compressor on the 84 trim turbine section to 23-26psi, expect around 1050-1150bhp.

If you're going all out; I would toss the 880's for something a little bigger unless you're going to add extra injector<s> to pick up some slack. You're going to be asking 880's to run pretty high duration with a very high fuel pressure.

Water injection will be your friend. For lean-out safety, you want 10% water to mixture ratio (That's water+fuel!, not just fuel!!!). If you want to be able to run way past the fueling setup, 25%+. You'll need a hellaciously big tank. The good news, is it'll run a hell of a lot smoother on water.


(No methanol, use ethyl alcohol. Methanol eats aluminum like crazy over time!)

 

[Kiwilowlux]

yep ive heard that about meth.
Ive considered that im no going to run 2 bar (i was kidding.) Im just going to tune the engine to around 85-90% duty on the 880's or maybe get some 1100's I'll see what happens. Not looking foward to the gearbox woes!!
But considering the car is only a touch over 1100kg now (even with a roll cage!!) it should make for a real weapon. It's going to be a street racers worst nightmare, Over 1000hp and a cop driving it.

 

[Toysrme]

880's oughta be good for you to get very safely up over 1000bhp. Just don't go crazy with an FMU, or RRFPR. A 1:2, 1:3 would be good.

 

[krayn]

My very limited understanding of turbos has me thinking that a turbo will only produce boost in psi or whatever in the inlet manifold when the volume, or pounds per min, output of the turbo exceeds the ammount of air the engine is consuming. So I thought that boost in psi goes hand in hand with turbo flow and the air volume the engine is consuming. Is my line of thinking wrong? Kris

 

[MikeMan]

My very limited understanding of turbos has me thinking that a turbo will only produce boost in psi or whatever in the inlet manifold when the volume, or pounds per min, output of the turbo exceeds the ammount of air the engine is consuming. So I thought that boost in psi goes hand in hand with turbo flow and the air volume the engine is consuming. Is my line of thinking wrong? Kris

It actually depends on WHERE you measure the boost.

As far as a wastegate is concerned then boost and airflow are independant. High boost does not mean high airflow.

However if you are talking manifold pressure then boost pressure and airflow are dependant, to get a higher manifold pressure needs higher airflow.

So it really depends on WHERE you are meausuring the boost.

 

[quadcam boat]

Blitz makes a twin sc14 kit for the 1uz have a look at their website.