Engine Builder Shop Solutions: January 2013
Detonation vs. Pre-Ignition (Editors Note: the following is in response to Greg Goss’s entry in the August 2012 issue) A sharp point or edge that can glow in a combustion chamber or on a piston top does not cause detonation. Mr. Goss inadvertently was referring to pre-ignition. Detonation and pre-ignition are two distinctly different terms and
Camshaft & Valvetrain Technology Overview
Camshaft and valvetrain technology is a topic we’ve written much about over the years. A rotating eccentric lobe on a camshaft still opens the valves. In the case of an overhead valve engine, the cam lobe pushes a follower or bucket tappet to open the valve. With a pushrod engine, the cam lobe pushes a
Choosing Valvetrain Components: Lifters, Pushrods, Springs & Rockers
The type of parts you ultimately choose will depend on the application (street performance, circle track, drag, marine, etc.) and any rules that restrict the type of camshaft, lifters or other valvetrain components that are allowed. But don’t overlook your customer’s budget. Affordability often limits your choices if a customer just doesn’t have the bucks
A Conversation with the MAHLE Clevite Champion Technician Winner Dave Arce
Dave is the owner of Arce Engines in El Cajon, CA. He remanufactures engines, performs general installation and repair, does engine rebalancing and has quite a resume when it comes to high performance racing engines. Dave’s daughter Hollee nominated him for the contest and wrote an excellent essay about all of her dad’s accomplishments throughout
Smooth Moves: Today’s Surfaces Often Demand Different Finishes
When multi-layer steel (MLS) head gaskets became commonplace a number of years ago, there was a lot of concern that aftermarket surfacing procedures might not be able to reproduce the mirror-like finish that the vehicle manufacturers said was absolutely necessary to seal MLS head gaskets. The challenge was to duplicate the factory finish using out-dated
Build With Bolt-On Horsepower, But Proceed With Caution
Whether the speed equipment is old school hardware or electronic in nature, you can be sure it is designed to turn automobile engines into more efficient air pumps. “Because the engine really is an air pump, I tell my customers one of the biggest things they can do is bolt on a different exhaust system,”
Performance Lifters, Pushrods and Valve Springs
Low friction roller lifters replaced flat tappet lifters many years ago in stock production engines, but there are still plenty of hot flat tappet cams bumping the valves open in vintage muscle cars, street rods and race cars. Even NASCAR is still using flat tappet cams to actuate the valves. The advantage of flat tappet
Three Reasons to Wear a Coat
What’s not usually as well known is the incredible versatility that coatings have in dealing with a huge range of problems. The number of uses for various coatings in performance applications is mind-boggling and nearly limitless, but in order to keep the possibilities cost effective and manageable it’s useful to think about it in terms
Exhausting Emissions Questions
It’s kind of funny because 20 years ago, no one wanted a clacking bucket of bolts, let alone have to work on one of these diesel engines. That was simply how the diesel engine was viewed. Now, mid-size trucks offer reliable power, awesome torque, quiet engines and decent fuel economy from a vehicle that can
Sprint Car Piston Design and Other Topics Discussed at the 21st AETC
People always ask what I get out of going to AETC? The simple 30 second elevator answer is you take the smartest people you know, or have ever met, and throw them all in a room together for three days and see what comes out of it. It usually doesn’t disappoint. As expected, a lot
Classic Muscle: Kammer & Kammer Make Mopar Magic
Most of the time, amateur racers are customers at the nationally known Kammer & Kammer Mopar High Performance Shop in Dayton, OH. Kammer says his business consists of about 65 percent racing and 35 percent street performance, and the most important thing he provides is a good relationship between himself and his customer. “When I
Valves: When to Reclaim, When to Replace
Performance engine builders can’t afford to take chances with questionable valves because they have to withstand high rpms and temperatures. Likewise, rebuilders who overhaul high dollar heavy-duty diesel and industrial engines want to minimize their comeback risks by making sure the valves they use are either new or have been carefully inspected and reconditioned to
Bolt-on Horsepower: Choosing An Induction System
The induction system feeds the engine air and fuel. So to increase the torque and horsepower output of an engine, the induction system has to provide more air and fuel. That usually means adding an aftermarket performance intake manifold with taller, larger and/or longer runners to increase air flow into the cylinder head ports, bolting
Caburetors and Electronic Fuel Injection Systems
These days just about everyone is looking to new technology to solve their problems. In some cases it makes sense: others, not so much. Take the trusty old carburetor for example: it has been around since the beginning of time (automotive time anyway), and many have predicted its demise, but somehow it keeps coming back
Scoping Out the Sport Compact Market
At first it was known as the Import Tuner Market which later morphed into what is currently known as Sport Compact. However, the market could be changing again and may soon be called something else. Last year, the Specialty Equipment Market Association (SEMA) changed the name of its Sport Compact Council to Street Performance Council
Today’s Niche Market Engine Opportunities
As we reported in our 2009 Machine Shop Market Profile, the total number of engines built is down, however, savvy engine builders know that finding the right niche markets can make the difference between success and failure of their business. With OEMs making engines that last well into the 200,000-mile range it’s no wonder rebuilders
Choosing Aftermarket BBC Cylinder Heads for Street/Strip Applications
In 1958, Chevrolet released the first big block for use in its trucks and heavier passenger cars. It was called the “W” engine and it came in three engine displacements until 1965: 348 cid, 409 cid and 427 cid. After Chevy introduced its “mystery engine” to NASCAR in 1962 with a combustion chamber and canted
19th AETC: New Theme Is A Winner
You can always expect to do a fair share of “bench racing” while sitting around the breakfast and lunch table at the Advanced Engineering Technology Conference (AETC). This year did not disappoint. Held just before the PRI Trade Show on December 8-10, 2008, at Orlando’s Orange County Convention Center, the 19th AETC nearly doubled its
Up-Selling in a Down Market
Do you ever wonder what’s next? First gas prices climb to more than $4.50 per gallon and everyone is dumping their gas-guzzlers. A couple of months later gas free-falls to $1.50 a gallon, but no one cares because people are being laid off in record numbers. Our major investment banks go bust, the credit system
To Dyno or Not To Dyno…That is the Question
The word dynamometer is defined in the dictionary as: Dynamometer (Dy – Na –mom – e – ter) – any number of devices for force measurement or measurement of mechanical power. The word comes from the Greek (dunamis – force) + (metron – measurement) and dynamometers might seem more like Greek than anything else until