I did a search and couldn't find anything. I'm guessing its around the 120-125 hp range. Any feedback is appreciated.

Thanks in advance.

Greg

 

Someone posted up some dyno sheets on another forum of stock tc's (one with 17" wheels, one with 19" wheels.

19" wheels stock tC = 145.12 HP, 152.77 Torque
17" wheels stock tc = 143.08 HP, 151.30 Torque

If these numbers are acurate, it would mean that the tC is underated because there is no way the tC is loosing under 20 hp to the wheels.

Also i think that the supercharger will produce 200hp to the wheels

 

i think its 160...

 

No. That is not how much power it has to the wheels. Thats how much power it has at the engine (or something like that, lol). Actually judging from the dyno's (if they are acurate) the tc probably has around 170 hp at the "Crank".

 

this has to be wrong, there's no way you're going to get more WHP with bigger, heavier rims. it's probably the other way around.

 

yeah, I would say 140 + - in stock form, there are alot of variables, break in, temprature, humidity, etc that vary from dyno to dyno but everyone has been 140 or better which I think is great, no civic or any other car in our price range looks or has that much power.

 

thats for the manual tC correct? I've heard the auto only gets 133HP to the wheels and 145lbs/ft.

 

its possible I haven't seen many dyno sheets on the auto. But there is probably more loss in the drive train so thats probably about right

 

Aren't front wheel drve cars subject to *less* drive line loss than RWD? So 140ish at the wheels isn't necessarily indicative of the engine being underrated.

In regards to the s/c...bah. It's all speculation until Toyo/TRD makes an official press release, but general thougth is ~200 whp, ~235 with an intercooler.

 

stock to the wheels with 5spd is 140ish on average, Ive seen a few different dyno sheets

 

well i dyno'ed my car 5 spd stock

141 hp 151 tq

 

i guess not that good of a search, look on the scion website...duh

 

ummmm, except that www.scion.com posts hp at the crank, not *whp* like the title of this guys post says. duh.

 

pwned!

 

^^ lol, and that was the nice version I posted....

 

Please ignore "duh" boy above, it is one of the few words he knows (search his posts and you will see what I mean... must be about 15 years old or so).

I would have to agree that those dynos are incorrect, the larger rims will yeild less power. Someone here in Minneapolis brought in dyno sheets from their tC after they bought it. It produced about 146 HP to the wheels. I agree that they must have under-rated a tad on the BHP numbers. I usually would guestimate about 20% loss to the wheels, but may be closer to 15%. The stock dynos I have seen posted online also come out in the 140 - 145 WHP range.

 

Yes front wheel drive cars are subject to less drive train loos than RWD's. But you don't have to compare it to a RWD. Look at the RSX-S (04). It has about 170 hp at the wheels. Which means it looses about 30 hp while the tc is only loosing about 15-20 hp. I think it is possible that the tC is underated. Not by alot maybe 5-10 hp.

 

I was asking because typically i've heard that you can safely estimate a 15-20% driveline loss for rwd vehicles (i.e. 15-20% difference when measuring betwen crank and wheels). If Front wheel drives do in fact have a lower driveline loss, than 12.5% (20/160 =12.5%) difference is probably about right.

 

But that's only if the larger rims *weigh* more, correct? I.e. a heavier rim is going to have more mass/inertia, so the same amout of power available will end up doing less work (meaning less hp)?

 

Yeah, that makes sense. You're probably right. I was just guessing it might be underated compared to the rsx-s.