Hey guys,

I wanted to know... does the 2.4L engine that is in the tC have strong internals from the start?

Is it built for turbos?

Not really...

It was built for efficiency and economy. Then again, so was the Honda Civic.

-THE DON

obviously you havent' heard of kenny tran's new car. it's a tC running 600hp @ 23 psi on a stock crank. :bow: check modified mag's websitehttp://www.modified.com

www.scionspeed.com

Not really...

It was built for efficiency and economy. Then again, so was the Honda Civic.

-THE DON

I'd thought so...

Reason why I asked was since Toyota had the intension to supercharge it. But then agian low boost wouldn't hurt it.

I was thinking in terms of... if the car was built strong I was thinking of getting turbo kits after my mfg warranty.

obviously you havent' heard of kenny tran's new car. it's a tC running 600hp @ 23 psi on a stock crank. :bow: check modified mag's websitehttp://www.modified.com

Correction, try 30psi :shock:

This is also with extensive internal mods; port and polish, bored 1.5 over & cylinder sleeves bring it to 2.5L, new valves, rods, pistons but yes it does have the stock crank.

Scionspeed had their's @ 12psi with stock internals and that thing hauled ___!

I was told by the local scion parts rep that it was built with the internion of boosting, .... a lot! It's injectors are oversized the maf sensor is also oversized. most of the parts built into the stock Tc are overengeneered(sp) for durability. compare the parts list between similar toyota products and the Tc and you'll see what I mean.

I was told by the local scion parts rep that it was built with the internion of boosting, .... a lot! It's injectors are oversized the maf sensor is also oversized. most of the parts built into the stock Tc are overengeneered(sp) for durability. compare the parts list between similar toyota products and the Tc and you'll see what I mean.


But the tC and Camry have the same engine, so does that mean we can safely boost 10lbs in a Camry or the tC and have it run 10 yrs with no leaks or major fixes?

I don't know about 10 years but technically you can. Also don't forget the Rav4, we share the engine with it too (kinda makes you wonder how hard it would be to add the transfer case and rear axle to give the tC the Rav4's 4WD).

I don't know about 10 years but technically you can. Also don't forget the Rav4, we share the engine with it too.

Then how dependable would you say a turbo car would be?

Audi, Volvo, etc. Most of thier cars comes with turbo and they have small engines too. They have to last at least 6 yrs with no problems right?

They might also run lighter cylinder compression than we do but not by much. Being how over-engineered our engines are, 6 years is very possible. Even after that you might just have to replace a gasket here or there, but probably nothing major.

They might also run lighter cylinder compression than we do but not by much. Being how over-engineered our engines are, 6 years is very possible. Even after that you might just have to replace a gasket here or there, but probably nothing major.


Interesting... okay cool. Thats assuring.

I didn't know the RAV4 shared the same engine. Hmm... good point, I would be interested in a 4WD conversion if they have one.

I know we have a toyota camry engine but i think it's tweaked to get more power out of it so in comparason i think some things are different like the other guy was saying, built for POWA!

I know we have a toyota camry engine but i think it's tweaked to get more power out of it so in comparason i think some things are different like the other guy was saying, built for POWA!


I noticed you said its tweaked for more power... but when looking at specs. The Camry & Rav4 have a little more power & torque than the tC. Or at least the RAV4 does.

Really now? DAMN RAV4!!! That's ok tC looks better HA! :rofl:

few reasons why toyota decided to release a supercharger for the TC.


its toyota/TRD tradition to release a supercharger for EVERYCAR they have.

and

becuase of the low RPM which resulted in long stroks of the internals, its a lot easier to spool turbo's. but the block can only handle so much HP (believe its 300)

so in a sense its was meant for boost yet it really wasnt.

obviously you havent' heard of kenny tran's new car. it's a tC running 600hp @ 23 psi on a stock crank. :bow: check modified mag's websitehttp://www.modified.com

but they swopped the tC's engine

obviously you havent' heard of kenny tran's new car. it's a tC running 600hp @ 23 psi on a stock crank. :bow: check modified mag's websitehttp://www.modified.com

but they swopped the tC's engine


worng yet right...


they blue printed the engine and had it rebuilt as in new crank, new pistons, new rods, new rings, new valvetrain, new block (short block), new cams

in a sense is stil the 2az jus hella modified but its not the ACTUALLY 2az that came frome factory

The tC does not share motors with the Rav4.

The 2az-fe engine is in the following US models of toyotas

05 up tC
03 up Camry
03 up Highlander

It may be the same engine, but like a brother, it can be built differently. Different pistons, lower compression, etc.

The 3S-GTE in the turbo mr2's and celica's is almost exactly the same as the 3S-GE in the euro/jap Celica and MR2 non-turbo, but the Turbo engine has a 9:1 compression to accommodate boost, while the non turbo has an 11:1 compression to put out more power. Turbocharge the 11:1 3S-GE, and when you start hitting double digit psi, it is more mikely to go "boom"

i believe scion speed ran thier turbo on stock nternals and it held like 298 hp or something. i think thats pretty good for a 17K stock car.

The stock internals can handle up to about 300whp. Much after that and you'll need a new clutch and then the other internals start to show their weakness. So if you plan to go over 300whp you should build up your internals a bit first.

The tC does not share motors with the Rav4.

The 2az-fe engine is in the following US models of toyotas

05 up tC
03 up Camry
03 up Highlander

The Rav4 has the same 2AZ block the tC, Camry, Highlander has; check the specs. Oh maybe in a fit of insanity, Toyota created special 2.4L that is exclusive to the RAV4 and messed up by giving it the same series number :doh:

The RAV4 enters 2004 with significant exterior and interior changes. Exterior changes include color-keyed back door handle, a new front bumper, headlights, grille, fog lights, tail lamps and spare tire cover designs. The 2004 RAV4 is offered in five new colors - Salsa Red Pearl, Super White, Everglade Metallic, Savannah Metallic, and Flint Mica. A new warm silver color is used on bumper molding, over fenders and spare tire cover for Natural White and Savannah Metallic models. RAV4 also receives a 2.4-liter four-cylinder engine (2AZ-FE) that puts out 161 horsepower and 162 lb.-ft. of torque. Vehicle Stability Control with Traction Control and Brake Assist is now standard, along with Anti-lock Brakes and Electronic Brake-force Distribution. Optional safety equipment includes first- and second-row side curtain airbags and front side airbags.

Also check:
http://www.carsmart.com/content/research/vir/index.cfm/vehicle_number_int/1016084/action/more/moreAction/specs
http://www.autoweb.com/content/research/vir/index.cfm/vehicle_number_int/1016084/Action/StandardFeatures

I never make claims I can't back up.

To help add to this, the scion speed put down 353 WHP and I beleieve 348 pounds of torque on a compleley stock motor. They did upgrade the clutch however, becase it was slipping at and above 12 psi.

If you run 7-8 psi you should be fine for long term durability. Get a great fuel map and you're all set. Our cars have built in knock sensors that detect detonation and pull back ignition timing if need be. So blowing a head gasket at 7-8 psi on a 9.6:1 compression motor at low boost is highly unlikely.

Also, a 2.4L is GREAT for boost. Look at the SRT4 and how well it takes to mods. That has a 2.4L as well. more displacement on a four cylinder like this comes from the longer stroke it has. It can push out greater volumes of air whcih greatly helps its ability to spool the turbo. Lag is the enemy, and this helps this situation.

about the low compression thats what i thought. most NA motors have higer compression due to non turbo or SC. and figuring that TRD is comming out with a SC, makes perfect sense. :eyebrow:

Yep!

i'm very skeptical of the project scion turbo kits. 600hp! :no: that thing will run great for your first stoplight drag.
one month later, your car is back at the shop replacing god-knows what.
be cool man, take it easy on the poor thing. treat it right and you'll have it forever. kill it with boost and you'll have a sweet set of wheels and pretty paint that doesn't move.

The 600hp tC isn't ScionSpeed. It's Jotech. They didn't just leave the engine stock. The engine has been fully rebuilt to handle the stress.

i deff think the tC was ment for boosting, i mean they did build scions for the pupose of the american tuners to "tune". 2.4 litre is a nice piece of engine to work with so i think its save.

In-line engines=built for boost.

Am I the only person who's not impressed with the "600 horsepower" Jotech motor? They spent thousands of dollars revamping the entire engine from the ground up, and only ended up with 533 horsepower? Granted, that's still many times the power of the stock motor, but with those types of mods I would expect them to milk out a bit more.

Am I the only person who's not impressed with the "600 horsepower" Jotech motor? They spent thousands of dollars revamping the entire engine from the ground up, and only ended up with 533 horsepower? Granted, that's still many times the power of the stock motor, but with those types of mods I would expect them to milk out a bit more.
I'm impressed.

If I were to spend "thousands" of dollars on a 4-cylinder engine, I think I would be pretty happy with ~600 horsepower. But, do the right work on any engine and your gonna make plenty of power. So, yeah its cool, but not a miracle.

yeah, i agree with mediocre. if i wanted to spend the price of the car plus thousands more...it wouldn't wouldn't be to have the fastest scion in the world. just sounds a little silly, but that's what the extreme side of the sport is for i guess.
how do you steer a car with 600 hp at the wheels you're trying to turn anyway?
speaking of, who know what it takes to make changes to the drive train, like AWD or RWD? pricey probably?

You might as well just get a wrx while your at it. That kind of mod has to cost at least just for the drivetrain $3000 (for AWD) with out labor.

yeah, wrx's are sweet.
i think i need to stay off this forum. here i am trying to save money for a house and all i can think about is spending $3000 for a supercharger. not good.

apparantly this has slipped by everyone
I'll try not to sound like a d1¢k saying it

toyota builds essentially 2 engine types

they have the suffix of FE or GE
FE is Fuel Efficient, the valves in the head are positioned for a better and more complete burn and to aid in lean-burning

GE engine use a different head/valve design and are more suited for high rpm and deliver more power

see here

http://www.toysport.com/Technical%20Information/FE%20Engines.htm

Then Toyota, give us a 2AZ-GE please. :pray: Still anyways I love the low-end torgue of this car and in the future adding a supercharger or turbo would satisify my need for speed. After all I'm not trying to run down a Viper.

As someone pointed out earlier, the torgue-steer on that 600HP beast must be incredible.

FE is Fuel Efficient, the valves in the head are positioned for a better and more complete burn and to aid in lean-burning

GE engine use a different head/valve design and are more suited for high rpm and deliver more power

Though our engine can still handle up to 300hp stock.

As someone pointed out earlier, the torgue-steer on that 600HP beast must be incredible.
But it's not like you're going to turn at WOT. If you just keep yourself under control I don't see why it would be a problem.

What does torque-steer have to do with turning? It comes from the cars tendency to pull left or right under heavy acceleration. But if our cars have equal-length halfshafts, it shouldn't be that big of an issue.

so since i'm too lazy to find out for myself, do we have the GE engine?
i bet so, who builds a 2.4 and tries to make it fuel efficient?
hmm, actually toyota would :P
i love this car.

700 HP Honda motors run a stock crank too. There is no need for a billet crank or anything that heavy-duty, but sleeves, rods, pistons....no that's another thing alltogehter

I was told by the local scion parts rep that it was built with the internion of boosting, .... a lot! It's injectors are oversized the maf sensor is also oversized. most of the parts built into the stock Tc are overengeneered(sp) for durability. compare the parts list between similar toyota products and the Tc and you'll see what I mean.
Your local scion parts rep is full of it, Toyota has been running this engine in the Camry since 2002, but it's also used in other cars worldwide and the Scion tC is their first to attempt to boost it.

It was designed for reliability and economy, but since the reliability part usually entails a fair bit of overengineering, boosting it a little bit happens to work decently =)

Anyways, I'm excited about it even though I don't have a tC, mostly because it opens up the prospect of boosting my Camry hehehehehehe....

apparantly this has slipped by everyone
I'll try not to sound like a d1¢k saying it

toyota builds essentially 2 engine types

they have the suffix of FE or GE
FE is Fuel Efficient, the valves in the head are positioned for a better and more complete burn and to aid in lean-burning

GE engine use a different head/valve design and are more suited for high rpm and deliver more power

see here

http://www.toysport.com/Technical%20Information/FE%20Engines.htm
I wouldn't worry too much about it in terms of boost though...the higher rpm toyota engines have never really supercharged particularly well (TRD supercharging I mean, not aftermarket with part replacement). So if all you want to do is bolt on a supercharger, the FE series stuff is just as good.
Look at the Matrix XRS vs the XR boosted with TRD kits for example, the XR can comfortably be boosted a lot more, while the higher compression and higher RPM XRS engine can't really be boosted more than a little without serious problems.

Am I the only person who's not impressed with the "600 horsepower" Jotech motor? They spent thousands of dollars revamping the entire engine from the ground up, and only ended up with 533 horsepower? Granted, that's still many times the power of the stock motor, but with those types of mods I would expect them to milk out a bit more.

If you read the mag that has the Jotech as a cover feature you will learn a bit more. They mention that the 533 hP is because of a stock fuel rail. They believe they can significantly go up from there once this is taken care of. They actually shutdown the dyno testing when the fuel caused something..I cant remember that part...but....lets see 7 weeks and and you nearly triple the output...not too shabby. And add in the fact they made practially all the mods on their own and didnt just open a catalog...yea thats not too shabby either.

I'm impressed and they had nothing but positive things to say about the Tc's engine potential.

so since i'm too lazy to find out for myself, do we have the GE engine?
i bet so, who builds a 2.4 and tries to make it fuel efficient?
hmm, actually toyota would :P
i love this car.
its right on the title of the tC forum heading..we have a 2az-FE