You'll also need an accessory...
You'll also need an accessory drive kit to complete the crate motor. KRC Power Steering manufactures a kit designed specifically for the CT525 and is exactly what the racer needs.
The same concept goes for the fuel pump and fuel pressure regulator. Because this is an electronically controlled motor, the fuel system must be able to supply a minimum of 50 gph at a minimum of 6 psi at wide open throttle (WOT). GM's high volume in-line electric fuel pump flows 72 gph at 6-8 psi outlet pressure and overkill in this situation is not a bad thing. There are also aftermarket suppliers like KRC who can supply the pumps and regulators. Keep in mind that you'll need at least a 12-gauge wire running to the pump for the electrical supply in order to maintain pump performance due to electrical line loss.
The final piece of the puzzle is the accessory drive brackets and kit. While GM makes a kit to fit the engine, it's an OE kit that includes an item oval track racers don't need-an A/C compressor. Luckily, KRC's new complete front drive system includes everything an oval track racer needs (and only what we need) to finish off the front of the engine. A KRC aluminum power steering pump with bolt-on reservoir tank mounts in front of the driver-side cylinder head, and a Powermaster alternator sits above the water pump. This provides a compact system capable of fitting into most race cars. Also included is a fixed adjustable idler-tensioner, -4 AN water bypass hose and fittings, Goodyear Gatorback belt, alternator ground strap, and all brackets, pulleys, hardware, and spacers.
Proof is in the Pudding The CT525 actually debuted back at the 2007 Performance Racing Industry in Orlando. But it has taken until this year for the brawny sibling of the 7-year-old 602 and 604 crate engines to make it to competition.As of press time there are two major sanctions where the CT525 is legal to race; C.J. Rayburn's newly formed National All Stars Racing Association (NASRA) and the previously mentioned ASA Late Model Series belonging to Ron Varney. Varney's 6-year-old traveling series features Asphalt Late Model crate engine cars at tracks from Florida to Wisconsin and points in between.
C.J. Rayburn's newly formed...
C.J. Rayburn's newly formed National All Stars Racing Association (NASRA) features the CT525 as one of the primary powerplants on its tour. The engine has successfully competed against and beat open motors.
Rayburn's series features Dirt Late Models in a come-one-come-all format with open-motor cars racing alongside crate-motored cars. In 2009 the series raced at tracks in Kentucky, Ohio, and Indiana with minimum weights and spoiler sizes leveling the playing field. In mid August at Moler Raceway Park, the engine and NASRA made their joint debut in the 3rd Annual Victor "Ike" Moler Memorial. While Scott James paced the field early in an open-motor car, it was fourth place starter Mike Marlar using the power in the CT525 to move his way toward the front, eventual lead, and subsequent win. Not a bad debut for the series or the motor.
The next test for the engine came at the 14th Annual Fun Fest at Lawrenceburg Speedway in October and Marlar would deliver again. Under track conditions more conducive to high-horsepower engines, the Tennessee racer piloted his GM CT525-powered Rayburn race car to the checkered flag with seeming ease.
While the deals with ASA and NASRA are a good start, Martens has been having aggressive negotiations with a whole host of other tracks and organizations about this new motor. "There are a half-dozen individual tracks, and at least one other sanctioning body, that are track testing the engine alongside current built motors. Early results are extremely encouraging, and I anticipate that several sanctioning bodies will approve the engine for use in 2010," says Martens.
You may also see a number of groups creating a CT525 only class. "That's the ideal situation for both the racer and the promoter alike. A CT525-specific class eliminates the trial-and-error of weight handicapping and puts the focus on car setup, which is where we think the effort should be spent," continues Martens.