help with a turbo charger

[07Azuresciontc]

i have a 2007 tc and i want to run a turbo charger, i really don't know much about the specifics of turbos, i do know that i want to run auto cross with the car so i don't want to wait for turbo lag, so im guessing i need a small turbo, i don't want to do a lot of engine internal work, i know i want to run between 230-260hp, also i plan on building a custom kit so i just need, advice on the turbo itself,

[fightinsk8ers]

16g would prob be good for you...small spools up quickly...custom turbos are cheaper money wise...eric (2dot4) will prob giv eyo usome advice he has a custom turbo setup and has a whole list of everything you would need to get for about 1800 i think...that doesnt include injectors, intercooler, ems, or a tune

[THansenite]

Yea, I would recommend the 16g. Spools super quick. Also, I am selling an E-manage Blue with a tune specifically for the 16g on it. Let me know if you are interested. :up:

[JoshCrane1]

i have a 2007 tc and i want to run a turbo charger, i really don't know much about the specifics of turbos, i do know that i want to run auto cross with the car so i don't want to wait for turbo lag, so im guessing i need a small turbo, i don't want to do a lot of engine internal work, i know i want to run between 230-260hp, also i plan on building a custom kit so i just need, advice on the turbo itself,
i was talking to you about doing your own kit for 1500 bucks, including emanage fuel pump and injectors and intercooler and piping. the whole shaaabang.

[Krdshrk]

I'm just going to warn you right now that this is no small undertaking. Turboing a car takes a lot of knowledge and maintenance. Building a custom kit too will take a lot of planning.

First off - is this your daily driver car. Since it doesn't seem like you know a lot about turbos or F/I in general, I wouldn't recommend that you do it on your car. You may be better off with the TRD S/C.

As for the turbo itself, it's very hard to find a manifold and downpipe that will fit a 16G or 18G Turbo setup. Especially since ZPI is now gone (not that they really made the best stuff before). I would go with a T3/T4 Hybrid turbo with a proper sized compressor housing. 2dot4 (eric) can probably help you out with that.

You'll also want to figure out fuel management. Which one to run, who will tune it, etc. If you don't know how to tune, you need a shop with a dyno to tune it.

[JoshCrane1]

yeah tim, paul is gonna go to japtrix to get his turbo engine tuned, and since his will be done soon, he can let you know how good they are at tuning. and now that subject is outa the way, i think u should go turbo,not s/c only cuz you have a lot of knowledge round u, as far as two fellow club members that have or had turbo tc's, and i will be with you here soon with my turbo engine build. do a lot more research online bout turbo setups and installs and get a little more familiar with how everything fits and works together, it will only help you that much more when you go for f/i.

how sick will it be when u,paul,(tronic) and I will all have turbo tc's???!!!!!and at least 2 of us will have built engines' with the turbos.

be tearing up south florida biaaatch!!

[SeanJohn]

I would say just go with the TRD S/C.

[JoshCrane1]

I would say just go with the TRD S/C.
but how would he feel when 2 other club members are smokin him with turbo's? and spent less.

[Krdshrk]

You CAN build the S/C too :D

Still, my post was based on his lack of experience with turbos and the rest. If you guys can help him out though, that's great.

[JoshCrane1]

You CAN build the S/C too :D

Still, my post was based on his lack of experience with turbos and the rest. If you guys can help him out though, that's great.
i know u can build a s/c too, but as far as cheeze goes, we know building a s/c is money, and im skeptical of the bearing issues.

[trrbo_tc]

my turbo kit is a 16g kit. would wrk perfect for your situation.

I'm installing the same kit on a different TC next weekend.

[07Azuresciontc]

i have considered the trd s/c but their track record isnt very good plus whatever i do to it, ie new pulley, water/meth injection, or any thing else will void the warranty on the s/c so i spend over 3 grand on the s/c then put a grand worth of parts on it and the bearings go or the seals go, then i have to strip it down, and hope they dont notice ive "modified" it, if they do then i have to foot the bill for the repairs, so like josh said i can custom build a kit for around 1500, plus i have the help to tune and trouble shoot any problems, plus theirs a dyno shop about 15min from my house, all i wanted was in put on the turbo charger it self, a small fast spooling turbo, its not like im going to be running 20lbs of boost, so im not worried about my lack of experience, i know alot about f/i cars, i just dont know the different ratings on turbo chargers.

[2dot4]

the TRD supercharger is so much money for shit power...I don't recommend it to anyone unless you have the money to spend on "the cool factor" - 7psi gets you 200whp with a tune...7psi even on a 16g gets you 230whp untuned...and the a/r of the 16g is significantly smaller than the TRD S/C.

not to mention the shitty record of the TRD s/c as you said. Why spend $3000 for the s/c, $$ for the pulleys, $$ for a new bypass valve, etc etc when you can spend $1800 for a reliable turbo kit that produces a better powerband?

Now, if you want to build your own custom 16g kit, you gotta find someone who can fab you a downpipe...i still haven't seen any mass produced downpipes (I know exactly why, but that's a different argument :-D). In your case, the 16g is probably the best bet, seeing as how you want it for autox. Check e-bay for downpipes from people who upgraded from the ZPI kits. The 16g should bolt up to any t3 manifold.

You can get 16g turbos all day for under $400, so that's definitely the cheapest option.

Given your desired power range, and the size of the turbo you're looking for, you will be able to get by very well on a piggyback fuel management (i.e. e-manage, unichip, AEM f/ic, etc). No standalone necessary unless you want to spend the money for the extra potential.

I know where you can buy most of the parts necessary - so if you have any questions, let me know.

[07Azuresciontc]

thanks eric once again you come to the rescue and answer the question straight and to the point

[2dot4]

Do I hear member of the month for February in my future? lol

[07Azuresciontc]

whats the differance between a 16g turbo and a t3 turbo? because 16g down pipes are no where to be found but i can get a t3 down pipe.

[2dot4]

well the 16g is a t3 turbo...just a small one - the downpipe used on the 16g is a 4bolt if I'm not mistaken - I still haven't seen one for the tC though.

vband is the way to go if you ask me - so much easier when you have to take off the downpipe. I'm pretty sure you can buy a vband flange for most turbo's - you just gotta weld the other vband flange to your downpipe - might be a cheaper option - find a 4bolt welding flange, and then find a vband kit - have a local shop weld em in place and you're golden.

I bought new 5-bolt flange and vband kit for my turbo - I did it to delete the internal gate and replace the turbo's 2.5" vband with a 3" vband to mate up with my 3" downpipe.

[07Azuresciontc]

yea i saw a piece on ebay that was a 16g flang with an external wastegate http://cgi.ebay.com/ebaymotors/DSM-Eclipse-Talon-External-Turbo-Dump-T25-BIG-16g-20g_W0QQcmdZViewItemQQcategoryZ6763QQihZ024QQitemZ 370011275265QQrdZ1QQsspagenameZWDVW
would this work, it looks like it would just have the down pipe welded to that right?

[JoshCrane1]

yo tim, whats that a pic of in your sig? doesnt look like a scion.

[07Azuresciontc]

its the hks drift altezza hks built two almost identical they are beautiful cars

[2dot4]

Lexus is almost Scion, right lol

That downpipe is for a BIG16g - different turbo with different flange, so make sure you use a big16g with that downpipe....also, that downpipe isn't for scions, but if you can find a fab shop, it's definitely a good starting point for a custom number.

That downpipe uses the turbo's factory internal gate port, and just routes it to an external...so you'd have to delete the internal gate for it to function correctly, but that's easy.

Now that that's out of the way, all you need is a t3 manifold with a wastegate block plate kit (since you won't be mounting an external gate to the manifold...atpturbo.com sells em). Once you get the downpipe custom fabbed for the tC, you're golden - all that's left is charge piping and intake (which are pretty simple), and the oil lines (which are also simple).

IMPORTANT NOTE: When tapping your oil pan for the oil return line, USE A THREADED FITTING and braided drain line - damn the expense, because if you use a "slip-on" fitting, you will have headaches and pain and suffering and all kinds of evil. I have slip on fittings and I HATE THEM! I wish I could start over in that respect. Turns out "slip-on" fittings also "slip-off" - who'd have thought?

[07Azuresciontc]

yea i did some research and the 16g and big 16g both have the same flange, and i know a couple of custom exhaust shops around that should be able to fab a down pipe using the flang with the short pipe on it, that what the name of the game is custom mods, and your slip fittings come appart easy thats odd, because ive used barbed slip fittings on plumbing projects and with a nice tight hose clamp the usually put, but then again i dont know what kind of oil psi the tc makes, havent hooked the gauge up yet