UR Tech Lab Turbo Edition - Techlab #35 Turbo Edition: Detonation Spotters GuideTechlab #35 Turbo Edition: Detonation Spotters Guide
Detonation is the spontaneous, uncontrolled combustion of the charge air mix prior to the spark plug sparking. Proper combustion is a smooth, predicable event set-off at a precise time in the combustion cycle. Detonation is more of an explosion, sudden and out of step with the combustion cycle. It is a certain precursor to catastrophic and expensive bad news. Detonation results in high cylinder temperatures, spikes in cylinder pressure both as much as ten times the pressure and heat of normal combustion. With such intensity it is easy to see how unabated detonation can make minced meat out of engine internals. Eliminating detonation is critical and the following guide will help you isolate the cause.
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By: Evan Griffey - 1/2/2009

 

 

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UR Tech Lab Turbo Edition - Techlab #34: Turbo Edition
UR Tech Lab Turbo Edition-Techlab #34: Turbo Edition
The 2009 Nissan GT-R was a definite bright spot at the recent SEMA Show in Las Vegas. One of the sleepers lurking in the Las Vegas Convention Center was this plain vanilla whip from TiTek Innovations. Dressed in some low-key carbon fiber body tuning accents, BBS wheels and Hankook's latest performance tires, the TiTek GT-R made only subtle hints to its real potential.
12/5/2008 - Full Article

UR Tech Lab Turbo Edition - Techlab #32: Turbo Edition
UR Tech Lab Turbo Edition-Techlab #32: Turbo Edition
The air-fuel ratio represents the parts of air compared to the parts of fuel in the combustion chamber. The higher the first number (air) the leaner the combustion charge. A lower air value results in a richer condition. I have often said burning fuel makes power, the more fuel you burn the more power you will make. This statement is always followed up with 'as long as it is at the proper ratio.' This is where the AFR gauge makes a difference.
10/10/2008 - Full Article

UR Tech Lab Turbo Edition - Techlab #31: Turbo Edition
UR Tech Lab Turbo Edition-Techlab #31: Turbo Edition
The Evo X has once again brought the tuning scene to a boil. The car is a rocket that begs for afterburners and the aftermarket is throwing fuel on the fire. With new leading edge cars come new challenges. Some of the Evo X hurdles facing today's boost gurus include a dual-phasing MIVEC system, an all-new ECU, fly-by-wire throttle, and the Twin-Clutch SST transmission in MR models.
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UR Tech Lab Turbo Edition - Techlab #30: Turbo Edition
UR Tech Lab Turbo Edition-Techlab #30: Turbo Edition
It's time to step up. You have hammered the stock turbo into the ground, turning up the boost so much the compressor map plots you so far off its efficiency island that you need a life raft. Wide-eyed, your retinas shiver at the prospects of finally laying into that turbo upgrade. This hormonally imbalanced state of mind is the exact WRONG time to start mouse clicking for parts.
8/15/2008 - Full Article

UR Tech Lab Turbo Edition - Techlab #28: Turbo Edition
UR Tech Lab Turbo Edition-Techlab #28: Turbo Edition
When we think of turbochargers images of brute power, sophistication and exhilarating acceleration spring to mind but the truth is a paper-thin layer of oil is all that's keeping a fiercely boosting turbo from going critical mass and sending shrapnel throughout the engine bay.
6/20/2008 - Full Article

UR Tech Lab Turbo Edition - Techlab #27: Turbo Edition
UR Tech Lab Turbo Edition-Techlab #27: Turbo Edition
Looking to the future, turbochargers have a number of forces tugging at them. Namely, fuel economy woes, air pollution, carbon foot printing, diesel technology, performance, reliability and innovation. In this Turbo Edition we will stand at the summit and look to the horizon and theorize about what will happen to our favorite power adder.
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UR Tech Lab Turbo Edition - Techlab #26: Turbo Edition
UR Tech Lab Turbo Edition-Techlab #26: Turbo Edition
This edition of Turbo Edition evolved from a tech question about cheap, near zero dollar ways to get more boost and more power out of a turbo system. I am always a bit shocked at how quickly some people will bump the boost with no thought whatsoever to the fuel side of the equation or what the added heat in the system can do to performance.
4/25/2008 - Full Article

UR Tech Lab Turbo Edition - Techlab #25: Turbo Edition
UR Tech Lab Turbo Edition-Techlab #25: Turbo Edition
Gasoline direct fuel injection technology is dropping in the half pipe at a feverish pace with hard hitters like the Mitsubishi Evo X, Mazdaspeed3, Porsche 911, Cadillac CTS, BMWs, Audis, VW, even the new Camaro is slated to have a 450-hp direct injection V8. While the technology is firmly on the street the aftermarket is spooling up to meet the tuning demands these juggernauts are creating. Consequently a lot enthusiasts are left to wonder how it will all play out. I have been wondering what's involved, how will power be made and how DI will change the tuning landscape.
3/28/2008 - Full Article

UR Tech Lab Turbo Edition - Techlab #24: Turbo Edition
UR Tech Lab Turbo Edition-Techlab #24: Turbo Edition
Timing is everything in life. We are lucky enough to exist in a magical era where engine dynamics, electronics and turbochargers have intersected. In this Turbo Edition we will scour over some of the wickedest factory turbo offerings to grace the roads of Metropolis. The idea here is to fire the imagination and inspire anyone looking for that next project; and who among us is not ready to spring on that lonely, abandoned diamond in the rough? The points system is a way to compare the engines against their peers. Enjoy.
2/29/2008 - Full Article

UR Tech Lab Turbo Edition - Techlab #23: Turbo Edition
UR Tech Lab Turbo Edition-Techlab #23: Turbo Edition
This month's Turbo Edition sprouted from a letter I received regarding pistons for a turbo charged application and the in-depth answer provided by Sean Crawford at JE Pistons. The JE crew provided some detailed and pertinent information that should be in the arsenal of any diligent enthusiast.
2/1/2008 - Full Article

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