Lord(s) Of The (Piston) Rings
“He who breaks a thing to find out what it is, has left the path of wisdom.” – Gandalf, Fellowship of the Rings. This is certainly not the case with piston ring technology, although Gandalf from the Lord of The Rings never directed his comments towards engine builders or piston ring manufacturers. Piston ring manufacturers
Valve Guide Reconditioning
A valve loses about 15 to 30 percent of its heat through the stem. On the exhaust side where there is no cooling effect from the incoming air/fuel mixture, the guides are critical, because cooling through the stem is especially important for valve longevity. Worn intake guides or ones with too much clearance can also
Valve Seat Installation Procedures
If a valve seat is damaged, cracked, loose, receded or too badly worn to be recut or reground, it can cause a variety of problems: loss of compression, valve burning, valve failure, valvetrain wear and breakage, even head and valve damage if the seat comes loose. For that reason, replacing valve seats is often necessary
Heavy Duty Technology: Piston Failure Analysis
The air/fuel, coolant and oil systems and relationships between various engine operations and the cylinder liner temperatures are critical to maintaining proper operation of all cylinder components. A variety of conditions can cause excessive piston growth or melting, and each will cause varying results – including catastrophic engine failure. The correct air/fuel ratio balance of
Coretalk: September 2001
Ford Plans to Revamp Parts Distribution Network Ford Motor Co. is working to restructure and expand its United States parts distribution network to deliver service and repair parts to its dealers faster and more efficiently. Over the next three years, Ford plans to increase the number of parts distribution centers from 10 to 21, creating
Back to Basics: Preventing Piston Problems
Burned pistons. Scuffed pistons. Cracked pistons. These are problems no customer wants to experience in an engine you’ve built. Warranty claims can kill your business, so here are some tips on how to prevent these and other common piston problems. First and foremost, if you’re custom building an engine that has already suffered some kind
Little Engines, Big Money
For the rebuilding facility familiar with typical automotive or heavy-duty engines, the small displacement, four-cycle, air-cooled engine may seem insignificant. After all, these one-cylinder motors, which may produce just 5 hp, are found in lawn mowers, rototillers and kiddy go karts, for cryin’ out loud! Although the small four-cycle engines from Briggs & Stratton, Tecumseh,
Automotive Rebuilder Interview with Brad Hartmann, Hartmann Bros., Inc.
Brad Hartmann is president of Hartmann Bros. Inc., a heavy duty rebuilding operation located in Abilene, TX. He is the incoming chairman of AERA’s Vanguard committee, the group providing leadership opportunities to AERA members under the age of 40. Hartmann, 31, has been with the company since high school in the 1980s, beginning full-time employment
Valve Material Heat Treatments
Glad to see you came back after that heavy-duty stuff I threw at you last time. This time it won
Cleaning Aluminum
"Ten years ago, when there wasn’t that much aluminum, people were scared," said Mike Wigert, sales manager of spraywasher manufacturer LS Industries. "They didn’t know how to regulate their ovens, they didn’t know which chemicals to use, and they were tarnishing their aluminum parts, and probably ended up hand cleaning a lot of them," he
1999 Machine Shop Of The Year Award Winner: Metric Automotive Engineering Ltd
Each year, the staff at Automotive Rebuilder magazine recognizes one machine shop that displays business practices that go above and beyond the norm. This year, along with input from the Engine Rebuilders Association (AERA), we have selected Metric Automotive Engineering (Pty) Ltd., from Germiston South, Republic of South Africa. Metric was chosen from numerous entries
Valve Stem Seals
Valve stem seals play a critical role in controlling valve lubrication as well as oil consumption. If the seals do not fit properly or are not installed correctly, the guides may be either starved for lubrication or flooded with oil. Either way, the engine is going to have problems – and you’re going to have
Cleaning – Do You Know Where Your Dollars Are?
Cleaning parts in the machine shop doesn’tcome cheaply. According to Automotive Rebuilder’s Machine ShopMarket Profile about 15.2% of engine machining and rebuildingproduction work involves disassembly and cleaning. According torebuilders that we surveyed, disassembly and cleaning accountedfor the highest percentage of total rebuilding production timein the shop. So there can be significant benefits to reducingcleaning costs
Cylinder Bore Honing: Main Objective When Refinishing The Cylinders
When an engine is rebuilt, the cylinders usuallyneed attention. Wear tends to create taper in the upper part ofthe cylinder that can reduce ring sealing and increase blowbyand oil consumption if not removed. The cylinder may also be outof round, scored or have other damage that requires correctingbefore a new set of rings will seal
Power Steering Pumps and Gearboxes
In today’s increasingly competitive marketplacethe quest for additional profits is of paramount importance notonly for continued growth and success, but for the survival ofthe company itself. This is particularly true for undercarriagespecialists such as CV axle and rack-and-pinion rebuilders. Niche market diversification can accomplisheconomic and strategic objectives that will not only improve the"profitable" cash flow
Electrical Market The Market For Rebuilt Starters And Alternators Has Been Painfully Soft
So far this year, the market for rebuilt startersand alternators has been painfully soft for many rebuilders. Ina business that depends heavily on the weather to stimulate sales,a mild winter and a relatively cool spring and early summer havedone little to spur demand. For most rebuilders, sales have beenflat. In some areas of the country,
Clutch Market: Passenger Car And Light Truck Clutches
Optimism isn’t exactly running high these daysamong clutch rebuilders and their component parts suppliers, particularlywith respect to passenger car and light truck clutches. The marketis being squeezed on one side by an influx of new clutches fromoffshore suppliers, and on the other side by price pressures andtoo much competition. You might say it’s a gripping
Ensuring Bearing Life: Crankshaft Bearings Are Always Replaced When Rebuilding An Engine
Crankshaft bearings are always replaced when rebuilding an engine because they’re a wear component. Heat, pressure, chemical attack, abrasion and loss of lubrication can all contribute to deterioration of the bearings. Consequently, when an engine is rebuilt new bearings are always installed. “Reading” the old bearings can reveal a great deal about conditions that may
Software Solutions For The Shop: Job Tracking Programs and More
Although computers began to make their way into the automotive aftermarket in the early to mid-1970s, only recently are rebuilders beginning to realize the benefits of shop management software for their businesses. One example of how shop software improves shop productivity can be found with job tracking programs. Job tracking allows managers to see the
Forklifts
Engine rebuilders often classify themselves as an automotive (car and light truck), and/or medium duty/heavy-duty diesel or industrial rebuilder, and usually primarily stay in one market or the other. Some cross the line and do business in both markets, but most tend to stay in familiar territory where they’re comfortable. Yet rebuilding forklift engines is