All About The Alloys – Valve Seat Selection For High Performance Applications
We can’t make any sweeping generalizations about what kind of seats work best in a performance engine application because “performance” covers a lot of territory, everything from hot street engines with stainless steel valves to top fuel drag racing and NASCAR engines with titanium valves. Seat requirements vary depending on the application, what kind of
Coretalk: NAPA Awards Crank Biz To Hi-Tech’s New Venture
The Hi-Tech Blueprint series crankshaft is restored to the original factory blueprint specifications. Blueprint Series crankshafts are delivered directly to NAPA stores in the U.S. on an overnight basis, including a program for Alaska and Hawaii. The company offers application coverage for more than 1,000 part numbers for auto, truck and marine. “NAPA chose this
Crankshafts:Stock and Performance
The crankshaft is the working arm of the engine. All the force generated by combustion and the downward motion of the pistons is focused on the crank throws. The leverage effect of the force exerted on the crank journals twists the shaft and converts the up-and-down reciprocating motion of the pistons into rotational motion of
Engine Bearings: Stock & Performance
The importance of the engine’s bearings can’t be over-emphasized. The bearings support the crankshaft and connecting rods, and in pushrod engines also the camshaft. The bearings provide a surface for the friction-reducing oil film that allows the parts to spin without rubbing metal against metal. It’s a tough job because of the high loads created
Has Hot Honing Cooled Off?
No matter how perfectly straight and round it may be when it is machined, a cylinder bore will change shape when cylinder heads are installed and when the engine reaches normal operating temperatures. During a presentation at the 2002 PRI Show, the subject of “Hot Honing” caused a tremendous stir of excitement among performance engine
Coretalk: AERA EXPO 2005 Set For Las Vegas Hilton In April
The EXPO will showcase leading edge technology with live, operating demonstrations of equipment, tools, supplies, parts and services. Exhibits will be open on Thursday, April 28, from 10:30 am-6 pm; Friday, April 29, from 10:30 am- 6:30 pm; and Saturday, April 30, from 10:30 am- 2:30 pm. EXPO will include a keynote address from NASCAR
Surfacing Equipment Options
On older cast iron engines with conventional soft-faced head gaskets, as long as the surface finish on the cylinder head and block deck is roughly 60 to 100 microinches Ra (roughness average), the head gasket should cold seal and remain leak-free for the life of the engine. But on late model bimetal (aluminum head/cast iron
Coretalk: GM, DaimlerChrysler Join Forces To Produce Hybrid Automobile Engines By ’07
Although financial terms of the agreement weren’t disclosed, the collaboration is likely to involve an investment of hundreds of millions of dollars between the automakers. The first of the vehicles is to debut in 2007 – when Toyota has said it hopes its hybrid model sales will total several hundred thousand worldwide. GM, which has
Crank And Cam Polishing: Are You Smooth Enough?
Manufacturers are designing today’s engines with tighter tolerances and less room for error. They make more power, live longer, produce less noise, vibration and friction, burn less fuel and produce lower emissions. So in light of all this, it is more important than ever for engine builders to be as perfect, or near perfect, as
Tractor Pulling: It’s Not Your Granddad’s John Deere Anymore
Tractor pulling has been with us for as long as there have been tractors. Farmers used to pull their horses, mules or oxen and, just as today, each bragged that he had the biggest and strongest. Today, at the top echelons of pulling, the technology is equal to anything else in motorsports. Although you won’t
What’s Hot In Performance – Cams, Lifters & Rockers
The camshaft is really the heart of every performance engine because the cam defines the engine’s breathing potential, its torque curve and peak horsepower. The camshaft controls when the valves open, how quickly they open, how far they open (with some help from the rocker arms), how long the valves are held open, and when
New Technology:Advances in Engine Building Equipment
How has racing changed your engine building business? No, it’s not a hypothetical, industry-generic question; in this case, it’s directed at every reader of this magazine. A strange question? It may seem to be. If you race – or build motors for racers – it’s probably an easy one to answer. But if you stay
Topline Automotive Buys, Reopens Hylift Facility, Engine Builder, August 2004
A full-line of flat mechanical tappets, lash adjusters and encapsulated hydraulic roller lifters are again being produced by the original Hylift machines and team. The previous Hylift OE lines that were in Zeeland, MI, have now been relocated to the Muskegon plant. “The same people who made ‘The Beautiful Lifter’ are back manufacturing with precision
Is There A ‘Spec Engine’Program In Your Future?
In an attempt to reduce the high cost of racing, many sanctioning bodies and racetracks are experimenting with or already using what could be described as “spec engines” or “crate engines.” General Motors was one of the first to offer a crate engine for racing, but now numerous manufacturers including Ford and Dodge have crate
2004 AETC Conference
The 14th annual Advanced Engine Technology Conference (AETC) saw a return to the Antlers Adam’s Mark, in downtown Colorado Springs, CO, Jan. 8-11. The return to this facility, though higher priced than those used in the recent past, was requested by a poll of last year’s attendees because of the higher quality of the hotel
Showdown Pits Engine Builders Against Themselves
For the 1,500 members of the cheering crowd, the battle was between two teams of professional engine builders, both of which have enjoyed great success building engines for some of NASCAR’s most popular – and successful – drivers. For Lanny Barnes and Mike Maiwald, though, the real challenge wasn’t to beat the other, but NOT
Sprint Car Motors
While the World of Outlaws, the All Stars, and USAC are the most well known of the sprint car racing organizations in this country, there are nearly fifty organizations that sanction sprint car racing. In addition, that doesn’t take into account the racetracks throughout the country that have their own division of sprint cars. Although
Surfacing Equipment For Today’s Engines
The surfacing needs of today’s engines are as complex as the engines themselves. Multi-valve aluminum cylinder heads on cast iron blocks are a tough combination to seal because of the difference in expansion rates between the two metals. If the surface finishes on the head and block are too rough, lateral shearing forces which occur
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
TIG Welding Opportunities: Working Magic In Cylinder Head Emergencies
Is there a machine in your shop that can be said to work magic? Not only can it fill cracks and repair broken castings, it has the power to create profits, restore power and turn back the hands of time. You might call it a TIG welder, but many of your most desperate customers will