nibble

For IAT, My S2000 measured 139F when ambient temp was about low 70F. If ambient temp is more than 100F, IAT must be much higher, like in 150F (?) maybe? Some how if you can bring IAT down to 140F, you sould get better performance. I don't have much experience with modifications, so please let me know if my logic is insensible.

cheers,

shingles

I tested the car the other day, it was in the mid 80's to high 80's. I was able to keep IAT fairly low, in the 100's I think during 40mph drive... I'lll have to check again though... could have my number mixed up.

-Shing

ultimate lurker

Doesn't sound unreasonable shingles, any differential around 30F in motion is believable.

Just imagine, if you get that differential down to 10 degrees, you'll pick up 3-4 hp easily. If you remove some restriction in the intake tract (which there is, particularly on the airbox inlet and possible the filter/tube transition) there might be even more.

UL

2kturkey

Thanks CD, this is goodness. I wasn't sure whether there was a restriction in the actual intake mouth or not. If this is not the case then well and good. I may try experimenting myself with extensions to the intake but am also concerned that if I have lots of curves and angles in my extended intake tract then I could reduce airspeed or create vortexes and end up starving the engine of air.

Does anyone have thoughts or suggestions here other than the general principle of minimising angles and bends?

Venom

What about ducting into the fenderwell?
a lot of domestics suck air frominside the fenderwell and the S2K has a nice opening in the pax side fenderwell that accepts a 3" tube nicely.
I just redid my intake setup, took a WeaponR Dragon, cut it back 4", put a cold air bell over the filter and ran aluminum 3" tubing into the hole I mentioned in the fender.
It's as far as possible away from the motor and away from the radiator as well.
I was thinking about opening up the pax side brake duct area to flow more air inside the fender and maybe raise the pressure inside the fender. The whole fender can act as a cold air box.
Anyone see any holes in my idea?
If you're interested, I'll post pix.

-Venom
'00 B&R
www.reptilogic.com/s2k/

shingles

[QUOTE]Originally posted by ultimate lurker
[B]Doesn't sound unreasonable shingles, any differential around 30F in motion is believable.

Just imagine, if you get that differential down to 10 degrees, you'll pick up 3-4 hp easily.

cdelena

I have noticed it is possible. Please post a pic.

Venom

Here are a couple of quick pix.
It's nothing exotic but it ought to work, I'm making an aluminum plate to seal off the fender where the tube goes in and like I said in the other post, possibly opening up the brake duct into the fender.

-Venom
'00 B&R

marcucci

Does anyone know enough about thermodynamics to postulate whether pulling air from a high-pressure area (like in front of the rad) is better than pulling it from a relatively closed space like the fenderwell? Barring temp. differences. I'm curious if the Spoon (rad snorkel) is a better "idea" than pulling the air from the fender, which may actually be a low pressure or vacuum at high speeds.

cdelena

Air from a high-pressure area does add to power and has been done with cars and motorcycles for years. But typically the payoff comes at speed, sometimes with no measurable gain until over 60mph and the most coming much faster than that.

IMO the biggest concern for this car is to avoid systems that feed the heated under-hood air so maybe the fender well accomplishes the important task even if you don