i really want to order a turbo kit (5-6 lbs. about 250 hp).
how much would running this turbo really affect the engine wear?
if i'm giving up my warranty i just want to be confident that the thing won't take a sh*t on me in 2-3 years.

 

5-6 psi shouldn't be too bad on your engine. I don't think it would affect it that much. But you might want to wait for one of the more knowledgable guys to come in and confirm/deny that.

 

5-6 psi isnt much, but you must remember your ara adding forced induction... a turbo adds more wear to the engine... also depends on how you drive. i personally think you would have problems 2-3 years down the road, if you are consered about thr warranty, wait for the sc to come out.

 

i don't think small boost like that would do a ton to the engine if you're careful. just don't misshift and hit 7-8k rpm because there goes your engine. i know that pretty much all the 18 wheelers on the road are turbo'd and those things have to be built to last. good luck

 

it's all in the tuning. a good AFR and proper maintenance and you could get an easy 100k miles out of it

 

The TRD s/c is estimated to be running ~6psi. There shouldn't be any more wear and tear from turbo than a s/c. The stress associated with forced induction is a product of: amount of boost used, the stregth/condition of the engine prior to boosting, and the habits of the driver. As scion is ensuring the warranty (can't remember the length) if installed by a dealer, they must feel pretty confident that 6 psi isn't risking much additional stress on the engine, for *most* drivers.

Remember these engines have *forged* internals stock. Toyota/Scion built these with the idea of F/I; i.e. there would be no differnece in the internals between the N/A and F/I
engines.

Therefore, 5-6 psi, from either a turbo or s/c, should give you little to know reliability problems, pertaining you don't overly abuse the car, and your engine is running within specs prior to installation.

 

excellent point (as usuall) matty... I didn't mention that aspect as I figured this guy would be buying a pretuned kit.

 

i agree with you there toastbox, but if he is worried about the warranty, might as well get the s/c, yeah it more money and less power, but you get that warranty to save you if something were to go wrong. to each his own, i think im getting the sc.... the warranty sold me on it.

 

They're built to last b/c they're built WITH the turbos on them. They're intended for use with turbo so the engine is setup that way. That's not really a good example for adding a turbo to a car that doesn't already have one.

 

haha, if you wait for the S/C to come out, your warranty will already be up due to time/mileage. thank the EPA.
X-eric-X

 

Not to mention an 18-wheeler's engine is diesel and is freaking huge. Anyone see the Monster Garage where they turned a big rig engine into a 3 wheel motorcycle? Now that was awesome.

 

yeah, for piece of mind, the s/c is really the only option. but for those that are willing to take a 2% or so chance (probably not even that high), and not wanting to spend excess money, the turbo is a better option. I originally was gonna go TRD. Due to the complete lack of customer concern they are showing, by not officially releasing any news/press to the general public, I don't feel compelled to spend the extra money in addition to waiting the extra time, for something I don't have official performance numbers for.

Keep in mind, per my above post, the tc's are built in mind for f/i. The internals of the engine are all forged, not cast. Again, scion built the 2.4l tC engines so that there would be no engine difference between a tC with a s/c and a tc without

 

Actually I *did* see that episode! completely impractical, but you're right, it was rather cool! [/offtopic]

 

Not only this but I don't see an aftercooler going on with the SC. so it'll be a hotter intake charge... more of a chance of detonation and more wear on the engine. honestly i can see a well tuned and built turbo setup lasting just as long as a normally aspirated engine.

 

don't slam the accelerator often and you and your turbo tc will last almost as long as NA car!

 

thanks for all the input. i think i might have to bust out the credit card. my main concern is that it's done right. there's a pretty good tuning shop around here that i'm confident they know what they're doing so i don't anticipate any problems with their work...
so is the only kit that's available right now the one from zpi?
has scionspeed released their kit yet or are is there any new info on that one? (for some reason i can't load their site)
does anyone know the difference between those two kits and pros/cons of each?
when purchasing a 'turbo kit', is this most likely going to be already tuned and complete with everything i need including AFR?

 

the only shipping kit I believe is ZPI at the moment. if you want to wait around Dezod is in the process of building a kit. ScionSpeed may ship turbo's on day LOL.

you may benefit from waiting around to see the big 3 (and maybe greddy... as #4) kits and see which last and have better #'s

 

I'm waiting on Dezod and GReddy's kits too decide which one to get... Assuming that GReddy releases theirs soon enough.

I think ScionSpeed's kit makes a little more power than ZPI's. I'm not sure if it's at more psi though. According to TCTunerz the Scionspeed is cheaper than the ZPI too... but I don't think anyone thinks of them as reliable.

 

TheSpeedFactor.com is in the process of developing a turbo kit.

I only know this cause I'm the test fit vehicle

 

make sure u change your pistons to low compression pistons so the boost wont mess up ur engine and wear it out.