Pushrods – Key To Performance
Pushrods are the weakest link in the upper valvetrain. Pushrods transfer and redirect the upward motion of the lifters, which goes in one direction, to the rocker arms which move in another direction. Consequently, they are subjected to bending forces as the load and engine speed increases. For stock engines, mild steel stock pushrods are
In Search Of New Markets, Mike Jeffries
Looking for new markets is one of the toughest things we do, so every time the phone rings we listen for an opportunity. Most of what we find is suspect, but over the past 12 months we have rebuilt a number of compact diesels and sold a number of rebuild kits. As a result we
Align Yourself
The crankshaft main bores are the foundation of every engine block. The alignment of the main bores is important because their position establishes the centerline of the crankshaft and how the crank aligns with the cylinders, deck surfaces and camshaft. Misalignment in the main bores can cause binding and premature main bearing wear. Misalignment occurs
Where Should The Cam Bearing Oil Hole Be Located On A 3400 Series Cat Diesel?
A: The AERA Technical Committee offers the following information regarding cam bearing oil hole location for 3400 series Caterpillar diesel engines and installation of all cam bearings for these engines. This bulletin should be used, and service manuals published before 1985 should not be used. The correct location for the oil hole in the camshaft bearing
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
Rebuilding the New Chevy 262
This enabled GM to shorten the development process dramatically because it was able to adapt a proven design. But it also allowed it to share a lot of the existing tooling from the V8 production lines so the engines could be on the road sooner. The original 200 V6 that came out in 1978 was
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
Crankshaft Polishing: Make Sure The Journals On The Crankshaft Are Properly Polished
Today’s high output, close tolerance enginesare more dependent than ever on quality remanufacturing procedures,durable parts and precise machining. One of the best ways to assurelong bearing life in today’s engines is to make sure the journalson the crankshaft are properly polished. The oil film between the journals on the crankshaftand the loaded portion of the
Rebuilding the Buick 3300
The Buick 3300 was introduced in 1989 as areplacement for the 3.0L that had been around since 1982. It hadthe updated block with on-center bores, just like the revisedversion of the 3800 that came out the year before, along withseveral other changes and improvements. This engine was installed in many of the "A"bodied cars including
1998 Market Update – CV Shafts
One of the biggest issues still facing rebuilders is the controversyover the pros and cons of grinding CV joints. Though many CV unitrebuilders will tell you it’s getting harder to remain competitiveunless you grind, nobody grinds unnecessarily in this tight marketbecause of the costs of machine work and labor. Craig Russell of Drive Plus, Inc.,
“Heading” In The Right Direction: Heads Are A Hot Commodity These Days
Heads are a hot commodity these days, but itdepends on the application. Some heads like those for Chevy 350and Chrysler 2.2L/2.5L engines are always in demand, but pricesare low because of the glut of cores that are available for theseengines. Even so, anybody who’s selling heads these days has tohave them. The hot heads are
Ensuring The Job’s Done Right, Steve Rinaldo
"Don’t blame me. It’s not my fault." How many timeshave you either heard or spoken those sentences when undertakingwork as either a service facility or automotive shop owner. Inmy more than 20 years associated with automobile manufacturerservice training, the question of how to ensure a job is donecorrectly, and whose responsibility it is to see
Why Parts Get Coated
I never would have believed you could get those kind of resultsfrom a glorified paint job. With those words, another skeptic(in this case, a NASCAR Winston Cup engine builder) had come toaccept the value of special coatings applied to engine components. At the time, such skepticism was not totally unwarranted. Likeany emerging technology, the coating
1997 Shop Kinks
Machine shops and custom engine rebuilders are, and always havebeen, a resourceful group. Our industry was founded on the principalof bringing component parts from a condition of disrepair to onethat offers equivalent performance to that of a new part. Rebuilt engines offer cost savings and performance benefits thatcan not be found with any other products,
Valvetrains: Better Materials & Design
Pushrods would seem to be an endangered species these days, atleast as far as most new engine designs are concerned. The onlybrand new engines built in recent years with a pushrod valvetrainhave been Chrysler’s 8.0L V10 for the Viper and Dodge Ram, andGeneral Motors new "LS1" 5.7L small block V8. All therest have either been
Ford’s 4G Alternator: IAR Series & The New 4G
When one considers the Ford IAR series of alternators,then examines the new 4G alternator, it seems that Ford went overboardto correct all the problems with the IAR series. The IAR series was designed for rapid assemblyand disassembly with plenty of snap-on connectors and mountinghardware. With this design approach came problems, particularlywith the burnt out B-S-S
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
Blasting Technology: This Cost-Effective Cleaning Procedure Has Improved
When it comes to parts cleaning by blasting,the idea of propelling abrasives at parts to clean them of rust,carbon, paint or other difficult contaminants is a simple one.But the technology involved with this cost-effective cleaningprocedure has improved, and rebuilders can take advantage of manyoptions to eliminate out-dated, labor-intensive cleaning practicesin the shop. Scott Christiansen of
Cv Shafts Market: Cv Axle Rebuilding Business: There’s Definitely More Competition
When Dan Levine, president of Southland Clutch, Inc., in National City, CA, started his rebuilt axle operation three years ago, it seemed like a win/win situation. The projected growth of front-wheel-drive vehicles and the number of vehicles nearing service age were good reasons to pursue this market. Plus, his initial start-up costs were minimal since
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