Contents 10.13
2 Contents 10/23/13 9:40 AM Page 2
Features
ON THE COVER
Choosing Camshafts
Maintaining Balance
Better balance makes for a smoother running and quieter engine. Even more importantly, proper balance also maximizes the engine’s longevity by reducing the pounding that imbalance produces on the crankshaft’s main bearings. This month, we take a look at some tips and techniques to achieve proper balance and reduce the NVH issues of not only performance engines, but stock and low revving heavyduty diesels as well................................................................22
Choosing a cam can be a headache – especially if you choose the wrong cam for a given application. There’s a lot of science involved in cam selection, which is detailed in this article from technical editor Larry Carley. Discover how choosing the “right” camshaft is not only the cornerstone of your performance engine build, but also its centerpiece ..................................................32
22 Fuel Failures
The recent changes in gasoline formulation may be a good idea in theory, but since this modern gasoline contains less energy than it did in the past it may actually cause a loss in power, fuel efficiency and driveability unless the engine is properly tuned for these new blends of gasoline. Henry Olsen explains the impact of today’s fuels on carbureted engines ..................................................................................40
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32 Columns
Old Iron ........................................18 By John Gunnel Harry Miller’s Masterpieces
Final Wrap....................................68 By Doug Kaufman, Publisher There’s No “I” in Team
Coatings & Treatments
DEPARTMENTS
When it comes to performance parts, no single coating or surface treatment can do it all because different parts applications require different treatments. But we’ll show you that knowing which kinds of coatings and surface treatments will work best for you can give your engines a significant advantage over your competitors ................50
Events ..................................................................4 Industry News......................................................6 NASCAR Performance ..........................................13 Shop Solutions ....................................................16 Product Spotlights................................................63 Cores/Classifieds/Ad Index ..................................66
Crack Detection Today’s engine builders have available to them a number of state-of-the-art tools and techniques to locate, identify and repair cracks and other damage in a variety of engine components. We explore these methods and offer tips on repairing cracked components to generate more dollars at your shop ..............................................................................58 COVER DESIGN BY NICHOLE ANDERSON
ENGINE BUILDER founded Oct. 1964 Copyright 2013 Babcox Media Inc.
ENGINE BUILDER (ISSN 1535-041X) (October 2013, Volume 49, Number 10): Published monthly by Babcox Media Inc., 3550 Embassy Parkway, Akron, OH 44333 U.S.A. Phone (330) 670-1234, FAX (330) 670-0874. Periodical postage paid at Akron, OH 44333 and additional mailing offices. POSTMASTER: Send address changes to ENGINE BUILDER, 3550 Embassy Parkway, Akron, OH 44333. A limited number of complimentary subscriptions are available to individuals who meet the qualification requirements. Call (330) 670-1234, Ext. 275, to speak to a subscription services representative or FAX us at (330) 670-5335. Paid Subscriptions are available for non-qualified subscribers at the following rates: U.S.: $69 for one year. Canada: $89 for one year. Canadian rates include GST. Ohio residents add current county sales tax. Other foreign rates/via air mail: $129 for one year. Payable in advance in U.S. funds. Mail payment to ENGINE BUILDER, P.O. Box 75692, Cleveland, OH 44101-4755. VISA, MasterCard or American Express accepted. Publisher reserves the right to reject any subscription that does not conform to his standards or buying power coverage. Advertising which is below standard is refused. Opinions in signed articles and advertisements are not necessarily those of this magazine or its publisher. Diligent effort is made to ensure the integrity of every statement. Unsolicited manuscripts must be accompanied by return postage.
2 October 2013 | EngineBuilder