Pistons and Rings – The Technical Price for Horsepower
Pistons and piston rings have been a hot topic of discussion among engine builders. At some point in our past, it seems as though there have been some piston shape and design changes along with some applied thermal and friction coatings – the same can also be said for piston rings. Piston rings seem to have become smaller with different shapes, finishes and coatings.
Understanding How To Tune Carburetors
An engine only runs as well as it is tuned. You can build a killer motor using all the best parts and machine and assemble everything with the utmost care, but if it’s a carbureted engine and the carburetor isn’t setup or tuned right your killer engine may never live up to its full potential.
Cylinder Head Design & Selection
Choosing the “right” cylinder heads for an engine build can make all the difference in an engine that delivers and one that falls short of its potential. Horsepower, torque and throttle response all depend on how well the cylinder heads, camshaft and induction system work together. Choose the right combination and you’ll build a winner.
Racing Spark Plugs
Choosing a set of racing spark plugs for a particular application is not as easy as it sounds because the plugs have to be closely matched to the application. Stock plugs are fine for stock applications and ordinary driving conditions. But when an engine is modified to make more power and is run under racing
Crank Grinding – The Myth of the .010”/.010” Crankshaft
Regrinding the crankshaft is an important part of the engine rebuilding process. It was almost an art in the ‘40s, but it’s pretty routine now. However, there are still plenty of myths and misunderstandings that are left over from the past that we still have to deal with today. One of the most common myths
To The Victor Go The Spoils – Victory Engines
Ray Banyas was given two weeks to decide if he wanted to buy Myles Engineering and go from long-time employee to owner of the Cleveland-based engine shop. The alternative? The business would shut down after being open 70 years. “A friend of mine said, ‘You might as well try it. You’ll kick yourself if you
REBUILDING THE 5.7L HEMI
Back in the early ’90s, when Chrysler realized that it would need a new truck motor to replace its 318/360 Magnum engines to meet the coming emissions standards, the company considered two pushrod engines along with one SOHC design and concluded that a pushrod motor with a pair of Hemi heads that really breathed would
The Great Crate Debate – Profit Potential From Packaged Engine Programs Actually Exists
Right now I know of no other term that draws as much negativity among some engine builders as the term “Crate Motor.” It immediately brings feelings of sales lost. We all know the story. The customer sees his car project like one big plastic model. When it comes time to pick a rear differential, write
I Object! – Be Sure Your Sources Are Reliable
Like Perry Mason, I don’t trust hearsay information. When I am not sure of something, I consult a book, website or ask someone who is an expert about the information I seek. Having been in an automotive and racing career for 50 years, I have a huge collection of Chilton and Motor Manuals, from 1935
A Job Well Done
If Timm Jurincie stopped accepting engine work today at his Avondale, AZ shop, Tuf-Enuf Auto & Marine Performance, he would still have enough work to last until September. Tuf-Enuf, which focuses on performance marine engines and street strip motors, is a sought-after engine shop in the Avondale and Phoenix area despite not advertising. “We don’t
Wet & Dry Sump Oiling Systems – Choosing the Right System for the Right Job
If you are building a customer’s “dream engine” what type of oiling system should you use? The answer to that question will depend on the application (street, drag, circle track, road race, off-road or marine), engine RPM and how much your customer is willing to invest in a lubrication system. Your choices may also be
Industry Still Strong, Say Readers – Engine Builder Readers Tell Us Business Has Changed, But Opportunity Still Remains
For more than 50 years, Babcox Media has covered the rebuilding industry on a monthly basis. At least 633 issues of Automotive Rebuilder and, since 2000, Engine Builder has been dedicated to the business of machining, building, rebuilding and remanufacturing engines. In our very first issue, we made the promise that we would be devoted
Midget Engines – Perfect Power from Pint-Size Performers
Midget open-wheel racecars and the Stock (S Class) and Modified (A Class) inboard hydroplanes have provided thrills and chills for racing fans since the 1930s. And as the speed and performance of these radically-different racing machines has improved, so have the engines that power them. These engines have varied from stock four and six-cylinder automotive-type
UNDERSTANDING ROD RATIOS
Performance engine builders are always looking at changes they can make that will give their engine an edge over the competition. Rod ratio is one of those factors that may make a difference. Changing the length of the rods with respect to the stroke of the crankshaft offers some advantages in certain situations, and may
Pro Stock Quandary
One of my first writing heroes was Robert Benchley and his first book I read was when I was a freshman at LaSalle Peru (IL) High School in 1954. While researching materials to use as an exordium for an English assignment, the humor literature section caught my eye. I found Robert Benchley’s 1936 collection of
When Does Your Customer Service End?
Anytime I have a discussion with an engine builder, I’ve found our conversation eventually turns to his customers. We discuss how he can get more, how he can satisfy the ones he has now and, in some cases, how to get rid of the ones he doesn’t want anymore. As you know only too well,
Brighton, MI High School Engine Building Program Includes Dyno Instruction
Stop me if you’ve heard this story before: a couple of guys get ahold of a tired late model Chevy 350 V8 and decide to rebuild it into something with a bit more teeth. With the help of a more experienced engine builder they spend about a year working on the block and heads and
Timing Chains, Gear Sets and Belt Drives
The short answer to which type of cam drive is best depends on the application, what your customer wants and how much they can afford to spend. A stock link style timing chain is fine for everyday driving and normal use. “Silent tooth” link chains are quiet, long-lived and adequate for stock cams and valve
The Lost Art and Business of Head Porting
If I had my current shop rate paid to me in a lump sum for every hour I spent porting and flowing heads and intakes in the ’70s and ’80s, I could build a new race car. In ’76 when I started running Pro Stock, my wife Linda got me a SuperFlow 110 for Christmas
Secrets Engine Builders Can Use to Make a Beast of a Factory Crate Motor Even More Impressive
Any bozo can slap a supercharger on a stock 505 horsepower LS7 small-block and pick up another 200 hp. Yawn. Increasing output that same 200 hp through natural aspiration should be harder, but all it takes is some head work, long-tubes, and a big hydraulic roller cam. Thanks to the incredible untapped potential of GM’s