Super Street Network

Due to the EU’s Global Data Protection Regulation, our website is currently unavailable to visitors from most European countries. We apologize for this inconvenience and encourage you to visit for the latest on new cars, car reviews and news, concept cars and auto show coverage, awards and much more.MOTORTREND.COM
 |   |   |  Engine Internals - Buyer’s Guide
Subscribe to the Free

Engine Internals - Buyer’s Guide

Beef up your bottom end for more power and longevity.

Oct 16, 2011

Once you’ve freed up a motor’s breathing, the desire for more power doesn’t stay away for long. The quest for more juice has plenty of routes to be taken, be they NA or forced induction. Regardless of which path you choose, it’s wise to consider your engine’s guts before jumping in headfirst. The parts featured in this guide are designed to create power and withstand the stresses associated with a highly built motor.

Brian Crower
Subaru EJ25 camshafts
These new billet cores fit the EJ257B head and feature dual AVCS on the intake and exhaust sides. CNC ground from state-of-the-art Schaudt grinders, the BC camshafts are available in a 272 spec as well as a 280 race spec.

Modp 1111 01+engine internals buyers guide+brian crower cams Photo 2/30   |   Engine Internals - Buyer’s Guide

Brian Crower
Heavy-duty I-beam connecting rods
Brian Crower delivers heavy-duty I-beam connecting rods for a variety of turbo applications. The rods are CNC machined from aerospace-grade 4340 steel billet material and feature ARP fasteners in your choice of ARP2000 or the premium upgrade ARP625+ bolts. BC I-beam connecting rods are available for the Mitsubishi 4G63/EVO and EVO X, Nissan SR20 and VR38, as well as the Subaru EJ-series engine platforms. Rated in excess of 250 hp per cylinder, these are the only rods you’ll ever need.

Modp 1111 02+engine internals buyers guide+brian crower connecting rod Photo 3/30   |   Engine Internals - Buyer’s Guide

These dual valvesprings are designed and engineered for high performance race/street conditions. BlackWorks dual valvesprings provide maximum lift while preventing valve float and help counter the effects of spring surge. These are a great match for naturally aspirated and forced induction engines. For maximum results, use with BlackWorks Ti retainers and high/low compression valves.

Modp 1111 03+engine internals buyers guide+blackworks valve springs Photo 4/30   |   Engine Internals - Buyer’s Guide

BlackWorks CNC-machined retainers are made from the highest grade titanium available. BlackWorks Ti retainers are machined to exact specs to help reduce the valvetrain’s overall weight and provide some of the greatest assurance from premature wear associated with high rpm. For maximum results use with BlackWorks valvesprings and valves.

Modp 1111 04+engine internals buyers guide+blackworks retainers Photo 5/30   |   Engine Internals - Buyer’s Guide

Connecting Rods
The Carrillo connecting rod is a precision, high-strength, quality connecting rod, and when properly installed and maintained will perform flawlessly in today’s racing and high-performance engines.

Modp 1111 05+engine internals buyers guide+carrillo connecting rods Photo 6/30   |   Engine Internals - Buyer’s Guide

Jim Wolf Technology
In-chassis valvespring tool
This tool allows a single technician to replace valvesprings in a safe manner, without removing the cylinder heads from the vehicle. By incorporating a modified follower bucket to compress each spring, the retainer locks can be set on top of the follower and moved safely into place, leaving both hands free to precisely complete the job. It can also be used with heads off the engine.

Modp 1111 06+engine internals buyers guide+jim wofl valvespring tool Photo 7/30   |   Engine Internals - Buyer’s Guide

Honda K-series camshafts
Designed specifically for the street enthusiast, the Kelford 179-A series cams provide a significant improvement in horsepower and torque when compared to stock TSX cams and are designed to use the OEM valvetrain without any upgrades. The primary and intermediate lobes are fractionally larger than the TSX and the main lobe features more area for increased mid-range and top-end performance. Gains of 30+ whp have been achieved with quality bolt-on parts.

Modp 1111 07+engine internals buyers guide+kelford cams Photo 8/30   |   Engine Internals - Buyer’s Guide

King Engine Bearings
XP engine bearings
The enhanced tri-metal, copper lead construction with nickel barrier of the XP Bearings feature King’s proprietary SecureBond advanced adhesion process. Applications include popular Mitsubishi and Toyota motors, with more coming soon.

Modp 1111 08+engine internals buyers guide+king engine bearings Photo 9/30   |   Engine Internals - Buyer’s Guide

Modern Automotive Performance
Connecting rods
For those of you wanting the best rod available for your build, look no further than MAPerformance rods. Made from 4340 billet steel for the ultimate strength, these American-made, shot-peened, stress-relieved and heat-tempered connecting rods are sure to keep your EVO X running strong. These rods require no modifications to the block or crank to fit and come with 7/16-inch ARP fasteners as a standard feature.

Modp 1111 09+engine internals buyers guide+map connecting rods Photo 10/30   |   Engine Internals - Buyer’s Guide

Blox Racing
High-compression valves
High-compression valves from BLOX Racing undergo a heat-treatment process to increase strength and are then coated using black nitride to provide superior wear resistance and minimize power-robbing friction. These valves increase compression by approximately 0.3 points.

Modp 1111 10+engine internals buyers guide+block racing valves Photo 11/30   |   Engine Internals - Buyer’s Guide

Blox Racing
These valvesprings are designed and engineered for high-performance street driving and all-out racing conditions. Each set provides maximum lift while preventing valve float and helps counter the effects of spring surge. These are perfect for both naturally aspirated and forced induction engines.

Modp 1111 11+engine internals buyers guide+blox racing valvespring Photo 12/30   |   Engine Internals - Buyer’s Guide

Buddy Club
Racing camshafts
Developed, tested and proved by Buddy Club’s own race teams and engineers, the Racing Spec camshafts utilize one of the more aggressive designs in camshaft technology available today. Buddy Club’s patent-pending lobe forming technology increases low- to mid-range torque while maintaining a 12.8mm lift for high-end power.

Modp 1111 12+engine internals buyers guide+buddy club cams Photo 13/30   |   Engine Internals - Buyer’s Guide

Probe Industries
Forged pistons
Probe Industries has completely redesigned its entire line of sport compact and import SRS forged pistons for Honda (B- and K-series), Nissan, Subaru, Mitsubishi, Toyota and Z-Tec engines. Probe has utilized the latest in forging technology and design, making them even stronger and offering an even higher-quality forged piston than was previously available. They’re completely forged out of 2618-T61 aluminum and feature full-floating pins and are 100 percent produced and manufactured in the USA. These are great for the street racer and the all-out racer.

Modp 1111 13+engine internals buyers guide+probe piston Photo 14/30   |   Engine Internals - Buyer’s Guide

Ross Pistons
EVO X Forged pistons
To meet the challenge of dealing with incredible cylinder pressure in tiny 4B11 engines, Ross designed the strongest forging available for this bore size. These pistons come with 52100 high-tensile bearing steel wrist pins (pin fitted at no charge) and a gas nitride steel ring package. The compression ratio is a boost-perfect 9.0:1, and they’re available in standard and plus 0.5mm (.020-inch) oversize. Various coatings and gas porting are optional.

Modp 1111 14+engine internals buyers guide+ross pistons Photo 15/30   |   Engine Internals - Buyer’s Guide

Racing valvetrain
Supertech stainless steel intake valves stand out for their precision and consistency. Heat treatment provides less friction for better heat dissipation than chromed valves. Dual valvespring kits are made with premium chrome silicon vanadium steel alloy for high performance and durability.

Modp 1111 15+engine internals buyers guide+supertech valvetrain Photo 16/30   |   Engine Internals - Buyer’s Guide

Racing valvetrain
Skunk2 offers a wide variety of high-performance valvetrain upgrades. Retainers, valves, springs, camshafts and cam gears are available for Honda B-, H-, F- and K-series engines, as well as newly introduced Subaru and Mitsubishi applications.

Modp 1111 16+engine internals buyers guide+skunk2 valvetrain Photo 17/30   |   Engine Internals - Buyer’s Guide

JE Pistons
Asymmetrical forged pistons
JE Pistons now offers the industry’s first off-the-shelf asymmetrical piston design. The unique piston skirt design reduces friction, while maintaining strength in all critical areas and includes JE Pro Seal Rings accessories.

Modp 1111 17+engine internals buyers guide+je pistons Photo 18/30   |   Engine Internals - Buyer’s Guide

Inline Four
Pro-Cast pistons
Pro-Cast pistons are cast by the same industrial automotive manufacturer that produces OEM Honda pistons; that same OE quality is in Pro-Cast’s special 81.5mm and 82mm sizes with a molybednum skirt coating. With power and reliability at its finest, you can now have the increased displacement without the thermal expansion headaches of a forged piston.

Modp 1111 18+engine internals buyers guide+inline four pistons Photo 19/30   |   Engine Internals - Buyer’s Guide

Modern Automotive Performance
Head studs
These studs utilize an H11 material that’s much stronger than the typical 8740 chromoly and yields a tensile strength of 260,000 psi. They’re also provisioned with a hex broach on the top of the stud, enabling you to install them with the cylinder head on the car if necessary. The MAP Ultimate Duty head studs include an additional feature over other similar studs form A1 and ARP known as a “dog point” that seats the stud in the block and pre-loads the fastener for an accurate and repeatable torque sequence.

Modp 1111 19+engine internals buyers guide+map head studs Photo 20/30   |   Engine Internals - Buyer’s Guide

Cosworth Performance
High-performance engine components
Cosworth high-performance engine components, including forged pistons, billet crankshafts, forged connecting rods and FSL head gaskets are available for a wide range of popular performance vehicles, such as the Subaru STI, Mitsubishi EVO and Nissan GT-R.

Modp 1111 20+engine internals buyers guide+cosworth engine components Photo 21/30   |   Engine Internals - Buyer’s Guide

Jim Wolf Technology
Jim Wolf Technology produces more than 20 profiles for various Nissan engines, including the S1 at 260 degrees/10.8mm lift to the C9 at 283.5 degrees/13mm lift. Email JWT for profile recommendations for all motorsports, boosted and naturally aspirated.

Modp 1111 21+engine internals buyers guide+jim wolf cams Photo 22/30   |   Engine Internals - Buyer’s Guide

Blueprint Racing
Stroker kit
BluePrint Racing stroker kits meet or exceed OEM tolerances and provide the base for a strong bottom end. These kits include billet race profile crankshafts, custom Wiseco pistons and race-profile connecting rods.

Modp 1111 22+engine internals buyers guide+blueprint stroker kit Photo 23/30   |   Engine Internals - Buyer’s Guide

Darton Sleeves
VR38DETT engine block
Modular Integrated Deck (MID) sleeve kits are now available from Darton Sleeves for Nissan’s VR38DETT block. This kit will allow you to go from a standard bore of 95.5mm to a max bore of 100mm, handling any amount of boost and or high compression in your GT-R.

Modp 1111 23+engine internals buyers guide+darton sleeves engine block Photo 24/30   |   Engine Internals - Buyer’s Guide

4B11 2.2-liter stroker kit
HKS’ 4B11 2.2-liter stroker kit is designed to increase engine displacement and incorporate technology that was developed in conjunction with the CZ200S time attack car. The EVO X 2.2-liter kit includes a forged full counter crankshaft, I-beam connecting rods and forged pistons.

Modp 1111 24+engine internals buyers guide+hks stroker kit Photo 25/30   |   Engine Internals - Buyer’s Guide

Performance camshafts
COMP Cams maximize horsepower and performance in everything from stock engines to big turbo and high-boost applications. Whether you need stronger mid-rpm or maximum upper-rpm horsepower, these cams are designed for serious street and race applications. COMP offers camshafts for many applications including Honda, Mitsubishi, Toyota, Chevrolet, Ford, Nissan and Subaru.

Modp 1111 25+engine internals buyers guide+comp cams Photo 26/30   |   Engine Internals - Buyer’s Guide

Toda Power
Progressive-pitch coil springs are used to prevent valvespring surging and improve the natural frequency. High-strength Si-Cr steel and ultra-high-strength Si-Cr steels are also used.

Modp 1111 26+engine internals buyers guide+toda power valvesprings Photo 27/30   |   Engine Internals - Buyer’s Guide

Toda Power
TODA camshafts are produced in Japan on the highest quality billet camshaft cores available. A variety of profiles are available, from mild to full race, and VTEC Killer Camshafts are also available for select Honda engines.

Modp 1111 27+engine internals buyers guide+toda power cams Photo 28/30   |   Engine Internals - Buyer’s Guide

Forged pistons
Wiseco Performance Products is now offering its Max 23-degree series of racing pistons. This is the first series to use 2.25-inch pin forging and technology. Narrow spacing between the bosses increases the bearing area and reduces unsupported crown area, reducing ring groove distortion. Kits are available in multiple compression heights and compression ratios to fit your motor.

Modp 1111 28+engine internals buyers guide+wiseco pistons Photo 29/30   |   Engine Internals - Buyer’s Guide

Tomei Powered
Performance camshafts
Performance camshafts from Tomei have been designed and tested to be used on the stock cylinder head and ECU applications. These camshafts have been designed for entry-level to mid-range tuning; they’re for daily driven street use vehicles as well as light track use.

Modp 1111 29+engine internals buyers guide+tomei powered cams Photo 30/30   |   Engine Internals - Buyer’s Guide


Wiseco Performance Products
Mentor, OH 44060
Skunk2 Racing
Norco, CA 92860
Jim Wolf Technology
El Cajon, CA 92020
Comp Cams
Memphis, TN 38118
Blox Racing
Fremont, CA 94538
Tomei Powered USA, Inc.
Lake Forest, CA 92630
Buddy Club USA
Ontario, CA 91761
Torrance, CA 90505
Brian Crower
El Cajon, CA 92020
BluePrint Racing
South El Monte, CA 91733
Inline Four
Garden Grove, CA 92841
Supertech Performance
San Jose, CA 95136
Los Angeles, CA 90061
Ross Pistons
El Segundo, CA 90245
Toda Racing
Irvine, CA 92618
JE Pistons
Huntington Beach, CA 92649
Darton Sleeves
Carlsbad, CA 92009
Probe Industries
Torrance, CA 90505
Mooresville, NC 28117
Modern Automotive Performance
Blackworks Racing



Two images that purport to show the all-new 992-generation 911 Turbo have shown up on the internet, and they seem to be the real deal
Ed TahaneyFeb 21, 2019
Aston Martin isn't expected to deliver its third hypercar until late 2021, but it's already teasing the mid-engine coupe codenamed Project 003
Kelly PleskotFeb 20, 2019
Carbon Signal Automotive (CS) might not be a familiar name to most, but it's quickly mastered what neither the best in California or Japan can do yet, which is what's helped put its name onto the map.
Jonathan WongFeb 20, 2019
Speedworks Motorsport opts for the new Toyota Corolla hatchback to take racing in the 2019 British Touring Car Championship
Bob HernandezFeb 20, 2019
The Mercedes-Benz SLC roadster has been discontinued, and to celebrate the automaker has announced a Final Edition
Conner GoldenFeb 19, 2019
Sponsored Links