The Smooth Science of Cylinder Honing
The basics of honing cylinder blocks hasn’t changed much in recent years, but what has changed are the type of abrasives being used by many engine builders. Silicon carbide and aluminum oxide honing stones of various grits have long been used in power honing machines and portable hones to finish cylinder bores. These types
Engine Crack Detection Technology
It doesn’t matter if you’re rebuilding a high mileage engine and reusing salvaged components or using brand new parts right out of the box – any highly stressed component or casting that has to withstand high loads, temperatures and/or pressures should always be inspected to make sure it is free from cracks or other defects
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
TLC of Your Valves — Temperatures, Loads and Corrosive Environment
The operating conditions that valves must endure dictate many things about the design and alloys to be used, the heat treatments needed, the finishes required, the necessary hardness at various areas, the method of construction and a host of other things. So it is vital for us to know just what those conditions are in
LPG Conversions: Renewed Interest In The Use Of LPG (Liquefied Petroleum Gas) And LNG (Liquefied Natural Gas)
The recent move to clean up inner city exhaustemissions has resulted in renewed interest in the use of LPG (LiquefiedPetroleum Gas) and LNG (Liquefied Natural gas) as motor fuels.These fuels are almost pure propane with a little butane present. Tax incentives are being offered to encouragefleet operators to convert to gaseous fuels and more vehiclesare
1998 Market Update – Electrical
The information provided in this article is excerpted from a presentationmade by Doug Barron, Manager of Freedom Battery Design & Application,Delphi Energy & Engine Management Systems. The presentationwas made at last year’s Independent Battery Manufacturers Association(IBMA) Convention in Chicago, IL. Barron’s comments pertain to the future requirements of automotivebatteries. However, they also address the increasing
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
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
Getting A “Good Seat” : The Growth In The Valve Seat Insert Market
The growth in the valve seat insert market can be traced back to the early 1970s when the switch to unleaded fuel took place. Most of the engines in use or that were in core or inventory storage had to have replacement seats inserted in the exhaust side to prevent valve seat recession that occurred when the engines were run
Performance Small Block: Chevy Engines
Small block Chevy engines long ago became mainstays in both thetraditional and high performance marketplace. So many of themhave been rebuilt over the years, and so much has been writtenabout the rebuilding process, it would appear that nothing moreneed be said. But the small block engine has changed over the years and so haveconsumer preferences
Grinding Techniques: In Thousands Of Years, The Basics Of Grinding Haven’t Changed
Grinding is one of the oldest methods known for shaping and sharpening objects. It was first used in prehistoric times to make weapons and other tools by rubbing wood, stones, bones and eventually metal against hard, abrasive rocks. In thousands of years, the basics of grinding haven’t changed. We’re still rubbing an abrasive against metal
Rules & Regs: There Are Numerous Annual And Semi-Annual Reports That Are Required Of Any Firm That Uses Or Purchases Regulated Chemicals And Materials
Depending on location, there are numerous annual and semi-annual reports that are required of any firm that uses or purchases regulated chemicals and materials. In addition to the actual reports, there are voluminous records that must be maintained and annual calculations performed to demonstrate compliance. Many firms do not believe that these reports and records are important, that they just add
Valve Guide Repair Options
One thing you can almost always count on when rebuilding a cylinder head is worn valve guides. The guides experience a lot of wear because of the constant friction between the guide and stem. To make matters worse, positive valve seals on late model engines prevent the guides from receiving much lubrication. Side forces on