a slightly different turbo application
 

I know most of the people on here have 4 cylinders, but i want to turbo my lexus sc400. here are the specs:

102k miles, just rebuilt, basically none.
1UZFE V8 4.0 Litre 205 HP

I need to know what size turbo i should use on it. After the turbo is done, not much wil be done to it, ssince it will cost me ALOT of money. I would apretiate anyones help for this =)

Re:a slightly different turbo application
 

I would figure out what you are going to use for fuel management first.


__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote

Re:a slightly different turbo application
 

safc-II tuned at a place called mahdavi motorsports.

Re:a slightly different turbo application
 

Ok, I guess you aren't the n00b I thought you were. ;)

I would go for at least a .60 turbine side and .63 for the compressor side. That's a nice sized motor to boost.

http://cgi.ebay.com/ebaymotors/ws/eB...tem=2459447416

This one will spool up very fast and work great, but might be too small depending on what you want out of the motor.
http://cgi.ebay.com/ebaymotors/ws/eB...tem=2460527099

http://cgi.ebay.com/ebaymotors/ws/eB...tem=2459306237

If you're a baller. 8)
http://cgi.ebay.com/ebaymotors/ws/eB...tem=2459532014

http://cgi.ebay.com/ebaymotors/ws/eB...tem=2460490292

__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote

Re:a slightly different turbo application
 

You should have got the SC300, much better platform for a turbo 2JZ. They do make a supercharger kit for that car and that might be a better route. This guy has a charger on a 1UZ

http://www.members.optushome.com.au/ameiers/Drag.WMV

Here's a SC400, its got massive traction problems.

Re:a slightly different turbo application
 

you say that because you have no damn idea of what the 1uzfe can do , do you? *sighs* the 1uzfe is one fo the best engineered engines there are, they last about 420,000 miles. not to mention that they make descent power for a 4-litre. everyone and their brother has 2jz-gte or 2jz ge but immagine the look on their faces when they here a nice whistle sound from the sc400. with forged internals, this engine will go up to 400 hp easily with fuel adjustments.


boost: thanks for the turbo advice. Im currently setting a budget for everything. to begin with, itll prob run 8psi. after internals are built, and fuel, itll be 12-15 psi. damn i cant wait to see the looks of the people at seloc meeting, hehehehe

Re:a slightly different turbo application
 

just a thought what turbos are they using on a 3000GT VR4? those things are twinned couldnt you use the turbos on one of those for your lexus? ( i know the 3000gt is a V6 but still)

Re:a slightly different turbo application
 

That would be a bit too small. He would spool the ---- out of it and poop out up top. :-\
__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote

Re:a slightly different turbo application
 

The reason I stay away from the 1UZ is because it comes with an auto tranny and there is no manuals that will bolt up to it. And I know that is the weakest link of that setup. Also the best Engineered block ever is the 2JZ-GTE, 1000hp on stock internals. Price BRAND NEW of shortblock $1500. Also with a V8 you should be expected to beat an inline 6. But good luck.

Re:a slightly different turbo application
 

im backin up whitey on this one.

auto trannies are garbage if they arent aftermarket ones that can handle 500+hp like the ones for the american muscle cars.

ur probably gonna begin slipping at about 300hp depending on how used it is

Re:a slightly different turbo application
 

thats why you get good torque converter and get a cooling kit for it, with that, the sc400 tranny holds around 400 horse power. and damnit i know the 2jz is the most used engine in a number of cars. i really dont give a hoot about it. there are too many 2jz's now. ive spent about a year learning about the sc400. i dont plan on going much above 400hp, if that high at all. and as traction goes, good tires, good torque converter,and have it cooled. even at 300 hp. thats unique for this project. and no one does this, and plus immagine the look on some guy trying to race me thinking its stock ::)

but help on the traction i could use help with, so just gimme advice ^_^

also, wow the 2jz is a nice engine, since it is meant to be tweaked the hell out of.and comes inT TT and n/a . i know i know. but i bet that guy has a little more hp than i am aiming for....

also about the turbo sizes that are listed, im aiming on going with one slug =P or MAYBE TT , dunno if i wanna go TT with my fisrt custom setup.

There is a turbo kit being made by a site called lextreme, but 5k ??? uhhhh,,,,,,, NO

Re:a slightly different turbo application
 

If you buy that kit, just go ahead and delete your membership at this site. :P
__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote

Re:a slightly different turbo application
 

im making it, dont worry, ^_^ i said bullshit im paying 5k for that thing, plus shipping, hell no. anyways, heres whaat i got so far: please help me narrow the budget down on these items. these were ebayed estimated =P

Project Turbo SC-400

Turbo=400$

Apexi Safc-II 150$

Intercooler w. piping 230$

Misc Piping $1000

Fabricated Manifold est 300$
screws, fittings, lalala 300$

wastegate $300

BOV 180$

downpipe [custom made] $100

Intake: $120

also im newer to turboing, so please tell me everything i leave out and price estimates of those. THANKS =)

Re:a slightly different turbo application
 

Wow. Ok, Ummm.....where did you find an SAFC2 for $150?

Misc. piping for $1000!!! :o WTF is misc???? Tube frame piping or what?

Intake? You're running a turbo. The intake is like 1 foot long. Why would it cost so damn much?
__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote

Re:a slightly different turbo application
 

personally id call precision turbo. a grand national turbo like an upgraded one would be an excelent choice or something along the lines of at least a t60.

Re:a slightly different turbo application
 

i guessed some of it.....

i asked for it to be leaned, =P

i was thinking of misc as in all the tubing, fitting etc. anyways, ebay is yo friend =)

Re:a slightly different turbo application
 

twin T3 60 trim's would work beautifully for anything under 15psi.
http://www.smokemup.com/auto_math/turbo_size2.php

twin turbo wouldn't be too much more work in this situation than a single turbo as you can fabricate either a full dual exhaust or a y-pipe to join them together. with a single turbo, you'll have to have a y-pipe, and i don't know how strapped for room that engine bay is. in some cases, it may be easier to fit 2 small turbos than one huge one.

for single turbos, a garrett 62-1 would work well, as would a T61 (though it's meant for much higher pressure ratios).

Re:a slightly different turbo application
 

tanx, that site is neat =)
also, redid the budget on some things.
Turbo=400$

Apexi Safc-II 150$

Intercooler w. piping 230$

Misc Piping $300

Fabricated Manifold est 300$
screws, fittings, lalala 100$

wastegate $300

BOV 180$

downpipe [custom made] $100

Intake: $120

and the beast:
http://67.33.106.111/engine.jpg

to get some space,the battery is being moved to the trunk, and winshield washer go bye bye ^.^

Re:a slightly different turbo application
 

I'd say SAFC II = $300,-

Re:a slightly different turbo application
 

i got connections ;)

Re:a slightly different turbo application
 

----, can you get any more safc2 for $150? thats a damn good price for the new one!

Re:a slightly different turbo application
 

hmm i dont know if i can or not for ya. well i found a fabricator in alabama that can make alot of the stuff i will need for the tubo project.

Re:a slightly different turbo application
 

hmm.. just noticed a potential problem. your car uses L-jetronic fuel injection, meaning you have an air flow meter (D-jetronic uses MAP sensor, for anyone who cares). the turbo has to pull in all its air through that sensor, which means you will likely max out the flow very quickly and at very low boost. this would basically lead to the ECU dumping fuel (read: zero fuel control even with an AFC) above the boost level that maxes out the sensor. that could very well be 2psi for all we know.

a couple options that may work:
use a stiffer spring in the airflow meter. toyota/lexus generally use a "flapper door" style meter in which airflow opens the door against spring tension. the door is attached to a potentiometer and gives off a voltage reading that way. installing a stiffer spring would give you full door range motion (meaning there would be voltage variation up to whatever you plan as full boost). this would lean out your fueling and advance your ignition timing (works the same way as the AFC hack). you would have to tune based on this info.

use an airlfow meter from a turbo car. it'll have the same "afc hack" effect on your timing. the supra AFM's may be able to handle it.

standalone EMS. i don't know of any rom editors offhand for toyotas. this would allow you to eliminate the afm altogether and use a MAP sensor.

either way, that airflow meter will likely give you a hard time tuning that an AFC alone will not fix.

Re:a slightly different turbo application
 

A common upgrade for the 7M-GTE motors is to use stock 550's out of a TT and the SC400 AFM with a upgraded fuel pump. This fuel setup is good to 550hp

Re:a slightly different turbo application
 

I believe Simple Digital Systems has a stand alone for this car.
__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote

Re:a slightly different turbo application
 

two t04h's stickin out the hood, only way to go with a V8

Re:a slightly different turbo application
 

well bad news, it cant be done.the only way i could have it turboed is get a sponcer for it [yeah right, like thstll ever happen] So i am thinking about just selling it to get a honda or another car i can fix up. well thiss sux everyone, thanks for all the help i was given =)

i called the fabricator, and when i told him it was for an sc400 he laughed at me... so i kicked the can, the bad thing is it has been done before, http://www.mechtech-ms.com/html/turbo.html


well, g'bye

Re:a slightly different turbo application
 

You can do it man.
Get two nice turbo's will run you around $1000 for 2 new T3/T4's.....but yeah you are relying on someone else to weld the pipes etc... maybe if you measured and cut the pipes your self and he just only welds them together it should be cheaper

Re:a slightly different turbo application
 

You need a BIG intercooler for a 4.0L V8.A $230 group buy unit wont do it. I have been working with LEXTREME on his $5,000 supercharger kit, trying to find an intercooler big enough to handle the air flow and fit behind the bumper. Currently he is using a 25"X12"X3.5" bar and plat unit that cost $450 wholesale. Thats just for the intercooler, no piping. Ant go with a T3T4, the 60./63.AR is only good up to 3.0L motors.

Re:a slightly different turbo application
 

a big ass T4. lol