by Eric Hsu
The serpentine belt idlers on the 4B11T do not last very long. In fact they will probably not even last the factory recommended service interval. Read inside for the idlers you want to replace them with to ensure the belt doesn't break and you don't smoke an engine prematurely.
Technobabble - Redefining Monkeypower
by Dave Coleman
Automotive terms and definitions have a long history of being stupid and arbitrary, and I have no intention of changing that, but if we’re going to be stupid, let’s at least use monkeys.
Inside are some images of some 4G63 heads and a block I sectioned for a study back in August 2010.
By Annie Sam
Modificum Racerium – a chronically debilitating disease which is characterized by the irrationally obsessive addiction to car modification and speed. “More!” we keep chanting, as we illogically pass up hot meals for cup o noodle in order to quell this addiction by buying more upgrades for our soon to be NASA PTD car.
Read More Racing Tips From Annie!
By Sarah Forst
I'm debating going carbs or ITB's with EFI. What is the advantage to using carbs over EFI? How do ITB's perform over a single TB?
Got a difficult tech question? Email Sarah at email@example.com
Turbo: Once Round the Block
by Eric Hsu
Two videos after the jump of the development process of the 1986 Cosworth GBA 1.5L V6 engine. The video also covers the development of the ECU and car, but what interested me more was the 4 cylinder Cosworth BD that was built as a tester on the engine dyno and its failure mode. This was before the time of CAD, FEA, CFD, and all that computer mumbo jumbo. 25 years ago it was all about your past experience and empirical testing which is a lot closer to how things are done in most parts of the tuning parts market today.
Our last article gave you a brief introduction to the learning curve for the average driver through the different stages of HPDE (High Performance Driving Event). As promised, this month’s article will give you a little more detailed tutorial on the basics of driving on the road course. Keep in mind that since this Project NASA PT car is an NX2000, the information given here pertains primarily to FWD vehicles, the typical drivetrain of many compact racing cars.
Follow Annie's travels in the world of Motorsports here!
In part 2, I cover most of the engine and some of the drama with the engine and engine installation. Racing's never easy is it? I included pictures of some of the engine's internals and components selected for the turbo Mazda DISI/MZR hybrid power plant.
A trick, tiny, high flowing, new wastegate from Turbosmart Australia. I used a pair on the Sierra Sierra EVO. Good enough for Sierra Sierra, plenty good for you (or those of us with normal cars). The tiny package size means you can fit this wastegate in almost any engine bay.
Technobabble: The Garden Sprayer That Won 2 Championships
By Dave Coleman
That free garden sprayer still travels with me to every race, and topping off the coolant with it is a standard part of every Eyesore Racing pit stop. The procedure is simple. Just pump it up to 20 or 25 psi before the stop, then plug it into the radiator hose when the car arrives and open the valve. The 20-psi water in the bottle flows into the 12-psi cooling system, blowing the relief valve on the radiator cap.
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