Turbocharging a 2000+ Celica...

Hey there guys, I'm swinging over here from the Eclipse/Laser/Talon section to ask you a few questions for my friends project. He has a 2004 Celica GT and he is planning on turbocharging it. It doesn't help me very much that he is pretty clueless on turbo setups, so I gotta find out all the details. lol Ok, here's what I'm wondering. I've done some looking for him but I'm not gonna do all the work here. He wants to get as much power out of his motor as possible without running the risk of stuff breaking all the time. Does anyone know how much horsepower, or where I can find, the rods and pistons are rated for? I told him he could use one of the extra stock turbos I have laying around here from my Talon. I figure that he could probably only run 5-7psi on his stock internals. I looked around some and nobody seems to have any details that I need to help him out with this. Also, do they make any turbo kits at all for 2000+ Celicas or are they custom made by people for their cars? Custom fabrication won't be a problem for us if thats the case. I would just like to know if this could be a lot simpler on me if they do make a kit. lol

you could buy or build your own, buying will cost you around $2500, building will cost around $1500 if you guys have your own turbo

basicaly youlll need
turbo
manifold(i can point you in the direction of this if you need it)
charge pipes
intercooler
you should use the celica gts injecotrs, there rated at 310cc 's (i believe) as oppsed to the 220cc' s teh 1zz has
youll need a way to control timing and fuel, i would reccomend an e-manage, there fairly cheap for 1zz-fe's and arent hard to install

you only real problem area is that you run on MAF, they dont pick up boost very well, youll basically ahve to run off a pre tuned map on it, also im not quite sure what ignition signal the 1zz gives out, wehter its a hall signal or not


as for strength, toyota engiens are built to last, therefore when you put more power into them you greatly reduce the amount of time they were built to be sustained, you could put 5psi into this engine and it could blow, or 15 psi and it could blow, dpeneds on tune, condtion of engine, and what your setup is
if he turboed it at 7 psi i would think around 170 WHP-180WHP, but of course that all depends on waht turbo he uses. are you going to be using a T-25?

I have my old t25 or a 14b... I even have a thuderbird turbocoupe turbo (not sure what size it is... maybe a 50 trim) I know what all he is gonna need for the turbo setup. I'm just concerned with internals handling the power. I know in our DSMs our stock rods are rated for about 375hp before they break and 450 for our pistons. Any clue as to what the Celicas will handle though? I know they made an old turbo model Celica but didn't know if any parts were interchangeable with his 04 or not.

nope not interchagneable at all
id say there good for about 250 hp before you should start getting forgies
the only thing id be worried about s how long the transmission is going to hold

how long will the trans hold at say, 250 WHP

comes back down to the inevitable answer, WHO KNOW?!?!?! could break in one hard launch if you dont pre-load or could last 100,000 miles

parts are made to last, once you start modifying your stuff you are decreasing the longevity of the part(s), if you know how to drive right (launch and shift wise) and you take care of your transmission id say it should be fine for awhile, but 75% of poeple dont know how to drive..... so.... who knows

I have my old t25 or a 14b... I even have a thuderbird turbocoupe turbo (not sure what size it is... maybe a 50 trim) I know what all he is gonna need for the turbo setup. I'm just concerned with internals handling the power. I know in our DSMs our stock rods are rated for about 375hp before they break and 450 for our pistons. Any clue as to what the Celicas will handle though? I know they made an old turbo model Celica but didn't know if any parts were interchangeable with his 04 or not.


250hp may sound weak but keep in mind the 2zz is a high compression engine, not designed for boost. get some low comp forged pistons and youll be in good shape.

well that would be pretty cool if he had a 2zz-ge,but scince he has a 1zz-fe that is irrelevant :)

haha oh shit, i didnt even see that he had a gt, i assumed it was a gt-s. lol

Sorry I've been missing out on this thread, I've been really busy lately... Anyways, I know that my friend isn't looking into tearing the motor apart or anything. He wants to keep it to mostly bolt on modifications, but it worried me that he wanted to do so much and keep his stock internals... I'm thinking 250hp would be more than enough for him. How about I set a goal for him of about 200hp... I think he would be plenty happy with that for the time being... What is the compression on the 1zz-fe? If its not too high I think we can get away without lowering it. Will the s-afc also work on Celicas for managing the fuel? The injectors, exhaust manifold, intercooler, and all the piping will be the easy stuff for me. The only complication I will have it trying to get the ECU to not hate me after giving it boost. lol

with the1zz you dont have to worry about lowering comp. when i said that i thought u were talking 2zz.

with the1zz you dont have to worry about lowering comp. when i said that i thought u were talking 2zz.
Ahh ok.

Well, hopefully we won't have to worry about any major problems when we do turbocharge it... I just donno when he's gonna get around to wanting to do it now. I am interested to see how well it will perform after he does it.

91 Celica St, you mentioned that you knew of a place to get a turbo manifold for these cars. Where can I get one then? Do you know what turbo flange is on it?

first your comp ratio is 10.3:1 its kinda high but you can (sorta) safely run 10 psi topps

tell me what type of flange you would like and ill give you place, i have a friend that makes them, FOR CHEAP too about $150 and hell drill and tap for egt

as for SAFC, there a horrible idea for fuel managment on an n/a car, they add timing as rpms and boost increase, i would only say use this if your also using an msd btm, but theres a little problem w safc's, the ecus of the newer model celicas like to ovverride them a little bit, alot of people have problems with voltage spiking

you best bet would be to go greddy emanage or smt-7...you can use a btm and safc and it should last, if you go that route aso get an adjustable FPR and make sure you have a friend w a datalogging wideband so you can see your afr's, id keep them at about 12:1 once boost starts, at 8psi on a t-25 expect about 200 WHP

first your comp ratio is 10.3:1 its kinda high but you can (sorta) safely run 10 psi topps

tell me what type of flange you would like and ill give you place, i have a friend that makes them, FOR CHEAP too about $150 and hell drill and tap for egt

as for SAFC, there a horrible idea for fuel managment on an n/a car, they add timing as rpms and boost increase, i would only say use this if your also using an msd btm, but theres a little problem w safc's, the ecus of the newer model celicas like to ovverride them a little bit, alot of people have problems with voltage spiking

you best bet would be to go greddy emanage or smt-7...you can use a btm and safc and it should last, if you go that route aso get an adjustable FPR and make sure you have a friend w a datalogging wideband so you can see your afr's, id keep them at about 12:1 once boost starts, at 8psi on a t-25 expect about 200 WHP
Ok, cool... Yeah, sorry I'm new to turbocharging a NA car and don't know all the specifics of doing it. My one friend had the greddy e-manage in his DSM and I know he took it out and he may have it for sale now. If he does then we could use that instead like you said. That compression is pretty high... I'm gonna be running 9.0:1 in my new motor and I thought IT was high. lol If you think it'll be ok though then we'll just leave all that how it is and go with the t-25 and only run about 8psi. I'm thinking the results from that setup should be plenty for him since he wants to keep the car reliable too.

I'll have to talk to him some more about it here this next week and find out if he still wants to do it and when. Hopefully he does cause I think it would be a fun little side project while I wait on parts for my own project. :wink:

yea 8psi isnt too bad to put on 10.3:1, as long as its intercooled, and have means to get fuel in there, also i would not do this unless i had at least an egt guge, and hopefully someone w a wideband to make sure your absolutely not going over 13:1 a/f ratio once boost starts

there is always the option of Hass Pro turbo kit. Has anyone heard anything bad about them?

never even heard of em

there is always the option of Hass Pro turbo kit. Has anyone heard anything bad about them?
I tried googling them for a website but couldn't find one... Got any more info on them for me?

BTW 91 Celica St, couldn't I also tune it by reading his o2 voltages instead of getting a wideband?... (Of course an egt gauge will be used in his setup too. lol :))

you can but you gotta remember the signals coming from a narrowband o2 sensor arent very accurate, i think .90 volts is stoic and more voltage means more o2, less voltage menas less o2

I know with our DSM's the ideal voltage is .89 and our o2 sensors are surprisingly very accurate. (Not as accurate as a wideband still, but very close actually.)

Can I use my OBD2 connector and datalogger to read all of his sensors for this? I'm just trying to think of the less expensive route for the tuning...

nope your obd1 it wont read correctly, and yea .9 is stoic for a gt celica for an st its .70 i believe mabe its .90 cant rember if its .70 for a 4afe or 4age, i have tooo many cars :)

if you want get a mr2 2 bar map sensor, and some 550cc injectors, itll put your fuel at +12% the whoole range, then get a adjusatable FPR and back off some timing with msd btm and you should be good to go, just watch your egt's and borrow a wideband

whats a BTM and a SAFC?

never use an safc in tuning w out somehting to retard timing, the safc ADDS timing,
safc=super air flow conveter
msd btm=multiple spark discharg boost timing master

so your saying you need like a turbo or something?

so your saying you need like a turbo or something?
............

Is the safc something that goes into the ECU?

http://www.hassturbo.com/ these people are who I'm talking about. They have an 11 second MR-S.

Is the safc something that goes into the ECU?
Maybe you should forget I brought it up... Its more of a DSM thing than a Celica thing...


Anyways, thanks for the link SigmaProjects. 91 Celica St, I didn't know that the SAFC added timing. I thought that it was used to adjust fuel levels at different RPMs and that it had nothing to do with the timing. I assumed I would have to use something else to adjust the timing in my car. Unless DSM's stock ecu's automatically compensate for what the SAFC tells it... I wish the electronics would be so much simpler than this to turbo a n/a car. lol

it adds fuel, but it adds timing as well, i would rather use a new map snesor and bigger injectors w a fpr then an safc, it would be safer because of how much timing it adds, thats why alot of people do the AFC "hack" becuase it (sorta) tries to elimiate it and reas off of tps and map

just go here: www.c2power.com and buy the stage 1 or 2 kit and when it comes strap it on and have fun

i would rather not drop $3000+ and just build my own kit

you always get what you pay for, you're also buying tech support and a warranty with 3000. and more than likely a more reliable car.

^ all depends on how you build it, all the turbo kits for 5th gens suck, i could build a safer, more reliable kit for cheaper and get more power

hehe that's cuz you know more than a lot of people who want their car to be turbo.

anyone could do it with enough research, its not all that complicated just takes time, this is actualy my first turbo kit im building for my self (well 2nd but the 1st never got put on) ive done it for other people but...oh well, should be fun

oh yea sorry to whore this thread but downpipe is being made (sorta just the initial elbow, the flange for o2 sensor and then it wont be finished, itll stip just before it bends under the oil pan)on thrusday and the kit will g0on on tursday, finihsed on friday and downpipe will be put on /finished friday

If you want to turbo a 7th gen, get a kit! There are some very nice quality kits out there (c2power and hass). DO NOT get the XS, Stafford, etc..