Alright my goal is to be able to beat a rsx type s, str 4, and a wrx or at least close to it. Now I already know that the turbo can provide me with 230 whp and sc with 192 whp. My question is to reach my goal safely meaning without significantly reducing engine life would it be possible to get there with a supercharger me modifying it? and since i know its possiobel to get there with a turbo and say i tune everythign properly should i expect significantly shorter engine life?

Warranty isnt really aprobably since i dont care that much about it iam just looking to get to my goal and tryign to find out if its possible witha sc and if it is would it be better for the engine/easier.

Someone I know with a turbo rsx s told me that sc are very limited and that the msot he has seen a sc on a rsx s was 301 whp with all mods pulleys and everything.

If its possiblw with the supercharger id rather take that route since to my understanding the turbo has more potential problems with lag, heat, oil accumulation and so on.

I know iam kinda asking questions all over the place and I appreciate the help.

 

Well the F-Trim Vortech S/C used in the TRD kit is capable of 20PSI, building the tC's engine to handle that kind of boost is far off.

 

I can see a tC with the super charger on it making around 300 with mods in the future. If you are dead set on going the supercharger route, throw it on there, do some basic mods to and and add you a small shot of nitrous for the times you want to race. You'll have decent power for a daily driver and be right in the area you want when your racing.

Charles

 

You could add a T3/T4 Hybrid to a Modded (intake man., header, and cat-back) tC at 15-18psi and get the same results of a SC at 20psi on a tC with headers and exhaust and get damn near the same effect. Bad thing is... now you're using a Brute Forced Induction unit that forces air hard into the engine (turbo) opposed to Managed Forced Induction that adjusts with the firing of pistons and valves (supercharger). A Supercharger is definitely easier on the engine... oiled or not. Personally - I say go hard or go home. Turbo's all the way! With the assistance of a throttle spacer.

I really should get into engineering and make some money off this crap...

 

The cars you listed is strange... beating a srt-4 is going to SMOKE a type S... Beating a type S will take considerable less than beating an srt-4. And do you mean an WRX or an sti?

 

Thanks for the replies guys i appreciate it, but is supercharging it and running it at 15-20 psi goign to be worse on my engine then alarge turbo running at less psi. The reason i posted those cars is cause thats the order i want to beat them in rsx s is obviosuly the slowest of the three so thats first and then srt 4 if i could mod up to that and eventually i want to beat wrx 2.0 , not the sti,. Basicly the question iam tryign to ask is if i want to eventually get 300 whp out of my engine which woudl be less stressfull on the engine the sc moded to 300 (if possible) or the turbo at 300 running at 10 psi or so. I know the turbo can give me 300 whp and run at 10 psi i dont know as much about a supercharger so i am guessing id up the psi to get it to give me 300 whp. oh and estimate wise which woudl be cheaper? but thats def not as important.

 

On a dragstrip, the SRT4 would destroy a base WRX. The turbo lag on the base WRX is horrible and the SRT4 puts like 40 more HP to the ground. On an AutoX course though, not sure, could be a toss up if the SRT4's power could overcome the WRX's handling.

 

this is a bit off topic.. but is there something for tc's like theres a vtec controller for hondas? cuz those things seriously give extra boost after 5k rpm

 

'Cause after 5K, the VTEC kicks in. VVT-i is completely different (well not completely, but close). There is the Camcon that'll modify your A/F ratio and cam phasing, try that.

 

A little clarification. VTEC does not give "boost". It changes to a different cam lobe, hence a more aggressive cam profile at higher rpm. Yes, it does work very well, but is hardly the magical turbo like setup that some make it out to be.

The tC uses VVT-i, which does not use multiple cam lobes or profiles. It varies the cam timing by altering the cam angle throughout the band. This is a continuosly variable system.

Then there are all the variations of the above.. but that gives the general idea. There are pros and cons to each setup and I wont get into comparing them or stating the pros and cons.

 

Personally, I'd go S/C and a 75 NOS shot.

sc will set you back $3k
decent NOS will set you back $1k

But I have no forced induction experience. But I am fairly risk adverse.

Turbos scare me more than a properly installed cautiously used NOS system does.

 

nos isnt really an option I want something thats always there to be used i dont want to have to keep refilling the tanks, so anyone have any clues what would stress the engine more 20 psi sc or a large turbo but lower psi

 

What F*cked up reality are you in that an SRT-4 puts 40 more to the ground than a WRX?

 

drivetrain loss with a 4 wheel drive system maybe?

 

20 psi on a supercharger is going to put more stress on an engine then a turbo. Superchargers are belt driven from the engine and are always there. Therefore, the engine itself has to work to spin the supercharger at all time. Granted, your not going to see 20 psi all the time. Only at redline, whereas with a turbo, your going to see max boost throughout part of the rpm range anytime your at WOT. 20 psi from a supercharger is A LOT for most any vehicle but its kinda a toss up. In either event, the stock internals will not hold 20psi from anything for very long. If your going to build it, then who cares. I believe you will infinatly be able to make more power with the turbo setup and get better mileage to boot when tuned properly.

Charles

 

K thanks a lot for the replies guys I appreciate it. The all wheel drive thing is [partially true btw two of my friends have awd cars 2.5 rs and an audi 4 both say that the all wheel drive loses power at higher speeds while from a dead stop they gain a tremendous amount more starting power so its a toss up i think wrx vs str 4 is wrx might win in a 1/4 mile run ofcourse i coudl be totaly wrong but jsut thoguht id share opinion of two peopel who own awd cars.

 

There is a difference between a WRX and a WRX STI.

WRX = 230 hp @ 5600 235 ft/lb @ 3600
STI= 300 hp @ 6000 300 ft/lb @ 4000

srt4 and a wrx in a straight line is a possibility
srt4 and a STi is no contest STI in any race.

Bottom line. If you are going to do something do it right.

If you are going to go Forced induction do it right. Spend the cash. Buy the internals, gaskets, and bolts that are made to handle more pressure and heat than your stock internals. On a engine properly built to handle boost on a daily driver you can squeeze 7 years out of your car with proper maintenace and care.
Make sure your turbos are properly balanced, if you don't have a turbo timer get one cause that will increase the lifespan of your components

 

Also worth mentioning that whoever it was that was just bringing out a turbo that is just a touch more powerful than the ZPI one (name escapes me) they destroyed their clutch and their axel, all these things you'll need much stronger versions of.

Why not just buy a second hand wrx ? If you want wrx performance. or a 10 year old supra for that matter.

TC is a great car and I love it, but it's not a raw HP machine and getting it into one is almost pointless. Unless you have bottomless pockets, in which case just buy a fast car.

 

oh trust me id be all for it, my is all paid out it was a present the only prob is even though i dont live with them my rents wouldnt be too happy abotu that and sicne the deal was i get the car and my insurance is gettigbn paid for iam not too sure i want to ruin that, my dad wanted me to drive a brand new car and i picked the tc becasue it looked really good and i ive always wanted to be able to mod a car i mean a wrx is great but i want to learn hwo to tune on this car wrx tuning looks a lot more complex thats also the reason that i wanted a sc becasue easier to tune but i guess i could learn on the turbo too turbo seems better for what i want

 

Plus guys this is a scion forum shouldnt you guys be saying "yeah mod your tc to beat those wrx's!"