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Wednesday, 23 Apr 2014
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SPEC Clutch: The Future of Fast

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It's a common misconception that when looking for a multi-plate carbon fiber clutch, the first thing you must do is run out and find yourself the best overseas aftermarket auto parts manufacturer cranking out clutches for your particular make and model.

While a whole host of after market auto parts manufacturer’s may offer long product lists and are well-positioned as carbon racing clutch suppliers, they are far from being the only game in town.

SPEC Clutch, a US-based designer and manufacturer of some of the most durable clutches on the market today don’t just blow smoke—they are more than willing to prove their products through testing on the bench or on the race track.

According to Dick Breakey, who recently installed a SPEC Stage 1 in his ’89 Mustang, “I love it. [Even though I’m] still in the break in period, I can already see how well it grabs. Even for a completely stock car this would be a great addition.”

The Alabama-based clutch and flywheel manufacturer is always working to stay ahead of the performance needs of the sports car market . In fact, just last month they announced new clutch and aluminum flywheel assemblies for the Subaru BRZ, Scion FRS, Toyota 3SGTE and Audi RS4.

Drivers looking for a multi-plate clutch assembly know what they are after; a no-nonsense clutch that is challenging to engage and can hold crazy amounts of power. There really is no other reason to run a multi-plate unless you are engaged in competition or have a high horsepower street car that sees a lot of track time.

“We developed a line of twin and triple plate carbon fiber clutches that debuted at SEMA '09” says Marketing Manager, Shelly Norton. “The need was there in the market because there are so many high horsepower cars needing low inertia and manageability.”

Carbon plates are generally considered to be superior to traditional materials for a number of reasons. The first being as soon as you install the clutch, it requires no break-in period. This is perfect for competition drivers, the lack of break-in (typically 500 miles of careful driving) means your car can get out there and shred up the track sooner, rather than later.

Carbon plates also don’t develop hot-spots because of their superior heat dissipation. Their resistance to heat means that they will clamp the same in competition and will not slip even under the most extreme conditions in high-horsepower cars.

For information on clutch basics from THMotorsports.net, click here.

SPEC Clutch Types Available At THMotorsports

SPEC Clutch Stage 1 
Types of Driving:

Street, Drag, Drift, Road Race, Rallye, Pulling, Autocross

Features an integrally molded carbon kevlar-based, high performance organic lining that offers smooth engagement and excellent life. This lining has an integrally bonded steel backing for strength under high clamp loads and temperatures. The hub is double sprung with spring cover relieves for flexibility and heat treated components for strength and durability. Best for street and many track/off-road applications.

  • High clamp pressure plate
  • Steel-backed and multi-compound woven organic material
  • High torque sprung hub and disc assembly
  • Bearing and tool kit
 
SPEC Clutch Stage 2
Types of Driving:

Street, Drag, Pulling, Autocross

Features segmented or full faced pure Kevlar disc with steel backing. This lining features excellent drivability like the stage 1, but offers slightly longer life and higher torque capacity. The hub is double sprung with spring cover relieves for flexibility and heat treated components for strength and durability. Best for street, drag, pulling and autocross.
  • High clamp pressure plate
  • Pure Kevlar friction material
  • High torque sprung hub and disc assembly
  • Bearing and tool kit
SPEC Clutch Stage 2+
Types of Driving:

Street, Drag, Pulling, Autocross

Features a multi-friction disc in a full faced configuration with carbon semi-metallic on one side and Kevlar on the other. Bridging the gap between stage 2 and stage 3, the 2+ offers drivability and engagement quality characteristic of the stage 2, but with a 15-20% higher torque capacity. The hub is double sprung with spring cover relieves for flexibility and heat treated components for strength and durability. Great for street, drag, autocross, road racing, pulling, rallye and drift.
  • High clamp pressure plate
  • Hybrid Kevlar and Carbon-Graphite Friction material
  • High torque sprung hub and disc assembly
  • Bearing and tool kit
SPEC Clutch Stage 3
Types of Driving:

Street, Drag, Pulling, Autocross

Features a carbon semi-metallic 6 puck sprung hub disc that has been the leading puck clutch in drivability, life and torque capacity. This unit is designed for street and race cars that require an aggressive but streetable engagement and high torque capacity. The hub is double sprung with spring cover relieves for flexibility and heat treated components for strength and durability. Also available in 3 puck configuration. Great for street, drag, road racing, pulling, rallye and drift.
  • High clamp pressure plate
  • Carbon-Graphite Friction Material
  • High torque sprung hub and disc assembly
  • Bearing and tool kit
SPEC Clutch Stage 3+ 
Types of Driving:

Street, Drag, Pulling, Autocross

The flagship stage for a high powered street or race car that requires a manageable and friendly engagement, the stage 3+ features a carbon semi-metallic full faced material that offers unparalleled life, friction co-efficient and drivability characteristics in one single package. The hub is double sprung with spring cover relieves for flexibility and heat treated components for strength and durability. Great for street, drag, drift, autocross, road racing, pulling, rallye and drift.
  • High clamp pressure plate
  • Carbon semi-metallic friction material
  • High torque sprung hub and disc assembly
  • Bearing and tool kit
Stage 4: Types of Driving:
Street, Drag, Pulling, Autocross

This unit is a solid hub version of the stage 3. The hub is solid 8-rivet and the assembly is heat treated for strength and durability. It is available in a 3, 4 or 6 puck configuration. Use the 3 puck for the lightest option or the 6 puck for the smoothest engagement. The 4 puck is a good compromise for both. Street drivable in 6 puck configuration, but not street friendly due to the rigid hub. Best for drag racing, road racing, pulling, rallye and drift.
  • High clamp pressure plate
  • Carbon-Graphite Friction Material
  • High torque solid hub and disc assembly
  • Bearing and tool kit
SPEC Clutch Stage 5
Types of Driving:

Street, Drag, Pulling, Autocross

Features a full-metallic disc with the highest possible friction co-efficient. Street drivable but not street-friendly. The hub is solid 12-rivet and the assembly is heat treated for strength and durability. Best for extreme street and drag racing.
  • High clamp pressure plate
  • Full-metallic friction material
  • High torque solid hub and disc assembly
  • Bearing and tool kit

 
 

Installation Guide

If you're a racer—or even if you’ve even dreamed of hitting the track—you know that the clutch is the vital linkage between the engine and the transmission. If you don’t have it installed or adjusted correctly, you can lose horsepower and wear out the clutch prematurely.

It’s always important to remember that attention to detail, thorough examination, and replacement of all worn clutch system components can eliminate immediate off-the-lift problems and prevent premature clutch failure. Remember, it's always important to follow manufacturers' guidelines for clutch removal and replacement as each car can create unique challenges. The guide below will walk you through the steps of installing a SPEC clutch in a C1 Corvette.



Brian Crower Cams: A Family History of High-Speed Success

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Crower Cams and Equipment Company, Inc., entered the after market autoparts arena as a one-man show, over 50 years ago, cranking out cams and custom engine parts for himself and his hot rod buddies in a backyard garage.

Fast forward 50 years and things have changed a bit—Cars are slightly more complex, the after market auto parts business has grown beyond raccoon tails that you can tie on to your antennae and machining processes have been revolutionized by computer controlled CNC grinders and digital micrometers.

Brian Crower Cams Inc., evolved out of the Crower Cams and Equipment Company family specifically to meet the rapidly growing needs, and power-hungry demands, of the import and sport compact market. Since striking out on his own, Brian Crower Cams has carved out an impressive niche in the motorsports business by producing high performance cams and stroker kits that continue to raise the bar for import performance enthusiasts around the country.

According to Justin Chalker, after installing a set of Stage 2 Brian Crower cams "The cams out performed my expectations for them and have sent my (Toyota) 7mge to the next level of competition. They were super-simple to install and didn’t require any additional modifications.”

The secret to Brian Crower Cams' rapid rise to success, according to their website, was their decision to embrace state-of -the-art equipment that insures exacting specifications during the manufacturing process. Beyond simply embracing cutting-edge technology, they also enforce some of the tightest industry specifications for quality and reliability.

Takin’ On The Imports

Brian Crower Cams has taken the import scene by force in recent years with the creation of up to five stages of cams for unyielding motors.
 

CLICK ABOVE and to view a step-by-step Brian Crower Stage 2 Installation.

In fact, Crower Cams regularly supplies some of the top running MotoGP, IHRA, and World Rally racers with performance packages that are designed to work together to deliver more horsepower and torque than any of their nearest rivals. When you add that to Crower’s flexible machining process that allows the company to manufacture just about any crank throw and rod length, then you begin to see what makes them one of the most popular options for heads-up engine builders.

In addition to innovative products, another thing that makes Crower stand out is their use of American-made 4340 chrome alloy billet on their race cranks and the fact that they also do two heat treatments (A core hardening and a surface hardening) throughout the manufacturing processes to increase strength and wear characteristics.

Another key aspect of the billet Crower crank are knife-edged counterweights, precise chamfering on all the oiling holes, and each crank features straight-through oiling. Unlike a cross-drilled crank, a Crower crank is created from the very start to push the oil directly to the rods—immediately, this is highly critical in high rpm combinations.

If you would like more information about Brian Crower camshafts designed for your specific needs, or other aftermarket auto parts for your next project, please give THMotorsports a call or click here.



 

Getting the Short End of the Shift: Perrin Short Shift Adapters

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The Perrin STI Short Shifter Adapter is a new and unique way serious driving sports ehnthusiasts can shorten their shifters throws with out having to whack a few inches out of your shift rod with a hacksaw—Just sayin’.
 
To top it off, Perrin's aftermarket performance parts make you the master of your own destiny by creating a tried-and-true short shift adapter that is designed with built in throw adjustability; from 10%-50% reduction in throw with the use of only a single tool.
 
“I got the Perrin short throw [and it] works great. It has the angle at the top to have a more comfortable feel in first, 3rd, and 5th gear, posted EvoDom on the Mitsubishi Enthusiast Network recently. “And, it feels nice and tight compared to the stock tranny where I felt like I was breaking it every time I shifted.”
  
In order to take it to the next level, serious driving enthusiasts will want to consider installing Perrin shifter bushings--a hard polyurethane bushing which simply replaces the OEM rubber shifter bushings. These finely crafted bushings eliminate most of the sloppy feeling during quick gear changes, giving the driver a more precise feel when shifting; especially that crucial 2nd-3rd shift.
  
When weighing the decision of whether or not to give a Perrin Short Shifter Adapter a try, remember, there is no messing with the reverse lockout cable, or disassembling a bunch of parts, or even having to jack up the car during installation.
 
When you add up the improved performance you will find with every flick of the shift knob, and the time and money you will save when you install this aftermarket auto part, it’s hard to resist adding a Perrin Performance Short Shifter Adapter to your car.

For pricing information and availability, visit thmotorsports.com.
 
To see how easy it is to install a Perrin Short Shifter Adapter on a late model Subaru, read on…
 
 
Parts Included with Perrin Short Shifter Adapter w/Bushings:
 
 (1) PERRIN WRX Short shift adapter
 
 (2) PERRIN 5spd shifter bushings$(2684)
 
 (1) M8x20mm SS socket cap screw
 
 (1) M6 Allen wrench
 
(1) Grease packet
 
Installation Instructions
 
  1.  Remove OEM shift knob by unscrewing shifter counter clockwise.
  2.  Remove shifter trim piece following directions for your specific model found in service manual.
  3.  With shift rod exposed, remove 12mm nut and bolt that attaches linkage to shifter lever.
  4.  Spin stock shift lever around 180 degrees. The bend should now point toward the back of the car.
  5. Remove the steel pin and the two plastic bushings from stock shift lever and reinstall them into Perrin Short Shifter.
 
 
 
 









6.     Slide the Perrin Short Shifter over the stock shifter lever. Note: Sometimes it can be tight going over the OEM shifter. This is due to small burs on the beginning of the shaft. A small metal file or sand paper will work to remove the burs.
7.     Reattach linkage to new Perrin Short Shifter using the 12mm nut and bolt.
8.     Adjust the Perrin Short Shifter to the desired height using supplied 6mm wrench. Recommended heights are as follows: Shortest throw = 48mm. Longest throw = 61mm. Measured from top of the stock shifter body down to the top of the Perrin Short Shifter.
9.     For the shortest throw pry up on steel trim ring surrounding the shifter lever lower boot. To do this, remove 12mm bolt and nut to move the linkage out of the way. Use large Crescent wrench to pry front left corner of metal rim ring up to clear linkage.
 
 
10. Once desired height has been found, tighten all nuts, bolts and fasteners.
11.Run the shifter through all the gears and check for clearance. Reinstall the boot trim plate, then e-brake trim plate, making sure to install plugs removed earlier.
 
For instructions on installing Perrin Shifter Bushings, visit PerrinPerformance.com.
 
 

Stack Tire Pressure Monitoring System

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Stack | TPMS (Tire Pressure Monitoring System)
It doesn’t matter which series or track you aim to dominate, Formula1, MotoGP, IHRA, Nascar, World Rally—In order to succeed you’d better be prepared to handle and ready to respond to the heat and pressure that threatens to boil over the moment the rubber meets the road.

Top 10 Honda Performance Parts

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Top 10 Honda Performance Parts
This is the Top 10 Honda Performance Parts.  You may hate it, you may love it, and may certainly debate it.  Honda has been the top auto manufacturer in the world, and has made many impressive innovations that have impacted the auto industry. During their creation of hundreds of models, there have been some 'boring' and economical cars as well as some exciting spine chilling rides.  Not only do they have great numbers in sales and high ratings, their impact on the tuner industry is through the roof!

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