WoW! What a difference cold air induction made!

[nitrorocket]

Last fall, on my one pass at the drag strip. My intake temps with my intercooled twin turbo motor got to 138 degrees! I was taking in hot engine compartment air.
I now have a ram air induction routing cold air from outside the engine bay. I data logged a full pass on the street and it was under 100 degrees!! I actually had to richen up WOT under full boost to compensate for the colder air. Just thought I would share this huge increase in power. What a difference!

[Blown353]

Sub-100 degree air under full boost? It gets hotter than that OUTSIDE here during the summer!

I wish my IAT's were that cold. Guess I need to get off my ass and design an intercooler. I usually see 135-145F under full boost even with the water injection...which leads me to my next question. What core size did you use for your intercooler? I'm just doing the preliminary measurements, design, and information gathering right now.

[nitrorocket]

I use a Spearco core. If I remember correctly, the core measures 3.5 x 15 x 20.

[Blown353]

Originally Posted by nitrorocket

I use a Spearco core. If I remember correctly, the core measures 3.5 x 15 x 20.

Have you ever compared inlet vs. discharge air temps, and what's the pressure drop?

Reason why I ask is I'll probably be fabbing something nearly identical for my car; I came up with almost identical measurements of my front end. Trying to get an idea of what results I can expect in the "real world."

I know the side tank configuration (with the charge air taking the long way through the core) isn't the most idea from a pressure drop standpoint but it's the best way to fit it in the noses of our cars.

Troy

[Speedster]

Troy -
If you need good intercooler info, email or call Tim at Ron Davis radiators. Also, remember for every 10 degree drop in inlet temperature you pick up approximately 1%. So if you drop 40 degrees on a 600 hp engine, you get a "free" 24 hp. It's a good deal.

[Speedster]

Nitro -
"Free" horsepower is always a good thing...