5.0 Mustang & Super FordsHow To Engine
Installing Air-Conditioning Bypass Kit - It's About Time
Affordable Timeslip-Altering Hardware From Paul's High Performance
Serious racers are always seeking an edge. Picking up a tenth here and there without spending a lot of cash is a cheap way to win races.
Timing is everything, especially in drag racing. As more and more modular Mustangs are showing up in quarter-mile combat, the pioneering efforts of long-term cammer campaigners such as Paul Svinicki are beginning to yield beneficial products for serious racers and weekend warriors. Paul's hard-core racetrack R&D has led to the development of some cost-effective Paul's High Performance competition-oriented hardware for modulars that can shorten both e.t. and reaction time-and maybe even improve durability-all without seriously impacting your bank account.
Item one on today's shopping list is the $199 air-conditioner bypass kit for '00-and-up GT or Cobra applications. It should be fairly obvious that the fewer accessories an engine has to drive, the more its power will end up at the rear tires. Despite a wide-open-throttle cutout, an A/C compressor is one of the greedier parasites of horsepower and is of absolutely no use at the track (other than possibly in the sweltering staging lanes at Maple Grove). The PHP A/C bypass kit can be quickly bolted in place for race weekends and then just as quickly reverted back to stock for the Monday-to-Friday commute. Dyno testing (see On the Dyno sidebar) showed a 4.3hp peak-to-peak gain, and an even greater 6-lb-ft increase on an otherwise near-stock GT. From a durability standpoint, the bypass also saves wear and tear on the compressor during those high-revving race sessions.
Our second item of interest doesn't numerically affect the power output of an engine at all, but Paul nonetheless found it to be good for about a tenth of a second at the track. The $289 PHP torque link shortens reaction time by limiting engine/drivetrain torque-reaction rotation that is otherwise permitted by the soft, factory engine mounts. And it provides this torque control without the harshness of a solid mount. A major side benefit of positively locating the engine in its roll axis is that it does the same for the shifter, the top of which, Paul tells us, can otherwise move laterally as much as 3 inches (!) during banzai runs. When fitted to PHP's familiar blue racer, in addition to a quicker reaction time, the torque link made for greatly improved shift consistency. An unanticipated bonus, this led to significantly fewer instances of transmission breakage. Who can fault a part that adds both quickness and durability?
As our photos will show, both parts install with a minimum of fuss, though fitting the torque link does require lifting the engine.
On The Dyno
You might expect bypassing the A/C compressor would show up only as high-rpm horsepower, but in our testing on the PHP Dynojet, torque, too, was up right across the curve. Check it out.
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