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Engine Bearings and Crankshafts, What makes them [not] tick?

The relationship between the crankshaft and main bearings is an integral one. Any metal-to-metal contact can have catastrophic results, and if the carnage was the result of improper finish or fitment, you’ll likely get to work on your relationship skills again. There are many analogies to explain how its parts relate to the engine as

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

Crankshafts and Bearings – Keeping the Relationship Strong

Today’s engines typically have very tight tolerances everywhere and the crankshaft bearings are no exception. The truer the crank is in its alignment with the mainline and cylinder bore, the tighter the tolerances can be. Bearings and mainline bores must be very precise because during operation the crankshaft is not actually straight: it is elastic.

Performance Crankshafts, Duane Boes

Across the United States it

Balancing, A State of Equilibrium

The balance of a rotating assembly is critical in every aspect and for every engine.

Factors of Crankshaft Selection

From the high-performance powerplants propelling Top Fuel dragsters to the subdued engines found in family sedans and grocery getters, each crank must be tailored to, and appropriate for, its specific application.

First-of-its-Kind Compound-Turbo L5P Duramax Engine

While incredibly rewarding, nothing about this L5P Duramax build was easy for Lead Foot Diesel Performance – everything was custom or a first. From the billet crank to the one-off compound turbos, this L5P Duramax is impressive. Check it out!

L5P Duramax engine
Summit Racing SPC Engine Block

These are brand new, heavy-duty castings that can handle up to 700 horsepower.

small block chevy engine block from Summit
Shop Solutions November 2023

Many times, the flange diameter of the rod nuts will contact the radius around the nut seat on some rods. Some jobs may not warrant the expense of spot facing the nut seat on the connecting rods. In that case, it can be quicker and more effective to just machine a chamfer on the ARP rod nuts.

Crankshaft Counterweights

Most engines are internally balanced, meaning all weight adjustment is done on the crankshaft counterweights. However, some stock and modified engines require external balancing due to an increased stroke or larger pistons, and the crankshaft counterweights that would be required to offset the increased inertia simply don’t fit inside the crankcase.

500 cid Top Fuel Hemi Engine

Boasting 10,000-12,000 horsepower, Top Fuel dragsters run a supercharged, nitro-breathing, billet Hemi engine. To keep these engines living throughout the season, shops like Pro Motor Engines are part of the engine program. Shop owner Dennis Borem walks us through how he helps Rick Ware Racing and Clay Millican’s Top Fuel Hemi engines.

PBM Rotating Assemblies

PBM rotating assemblies have a proven reputation of quality, durability and performance.

Understanding Crankshaft and Bearing Load Cycles Webinar

Randy Neal of CWT Industries, Dan Begle of MAHLE Aftermarket and Nick Norris of Callies Performance Products will cover yet another new topic in balancing that has not been touched on in the past. They will be combining their vast knowledge to connect the dots of how the current designs of crankshafts and bearings handle

Rottler Report with Nick Cogar of Diesel Power Parts & Machine

Nick Cogar works at Diesel Power Parts & Machine, an engine machine shop located in Missoula, Montana. The shop mainly focuses on remanufacturing engine blocks, cylinder heads, crankshafts, and connecting rods among other engine machine processes. The shop owns a @Rottlermfg F79A machine that helps keep the shop running smoothly. “It’s been a very versatile

Shop Solutions – October 2023

A written warranty provides benefits for you and your customer. It sets expectations, protects both parties and is a great marketing tool that encourages repeat business.

Dart Fully Counterweighted LS Crankshaft

Precision CNC-machined from premium 4340 steel billets, the design incorporates heavy-duty rod cheeks and the LS1/LS6 short snout.

The Good Side of Private Equity?

It’s no secret that the performance industry and engine building industry has been consolidating for quite some time. It’s occurring on just about every level – shops, manufacturers, distributors, etc. Most evident recently has been private equity firms buying up manufacturers, as well as other large performance groups merging with various brands within this space.

Scat Enterprises To Move Into Vortech Engineering Facility

Scat Enterprises will be moving headquarters from Redondo Beach, CA to Oxnard, CA by March 2024.

Crank Balancing Update

If there’s anything all of us in this industry have come to understand, it’s that you can never be certain someone else did the job correctly – and when it comes to crankshafts and crank kits that you or a customer might purchase, it’s imperative to ensure a proper balance job was performed and not just trust that it was because it says so.

Rebuilding Chevrolet’s Gen VI Big Block Engine

Following Chevy’s introduction of its popular small block V8 in 1955, the OEM needed something larger to power its medium-duty trucks and the heavier cars that were
on the drawing board at the time. Enter the big block!