Tech How To’s

arp bolts

ARP’s Secret Fastener Technology Lab

ARP's test lab has quantified the potential for a 20% or more loss in clamping force with used…
compression ratio

Understanding Dynamic Compression Ratio

Your engine actually has two compression ratios, static compression ratio and dynamic compression…
RTS PD Valve

RTST Ported Flow Testing Valves

The RTS kit permits precise mapping of the airflow values around the circumference of the valve…
Engine Builing

Engine Building Rules Part 1: Planning

Consider a typical performance engine build plan that holds true for many budget based bracket…
Cam Lobe Profile diagram

Effects Of Changes in Cam Timing and Lobe Separation Angle

The following tables provided by COMP Cams illustrate how variations in lobe separation angle and…

Camshaft Basics

Pushrod based engines use two basic types of camshaft; either flat tappet or roller tappet. It’s…
Piston Speed

Calculating Piston Speed

Mean piston speed has long been used as an indicator of component durability under severe service.…

Porting Pointers

The objective of porting a cylinder head is to improve engine performance via constructive enhancements…

Tuning Tips for Intake Manifold Deficiencies

July 28, 2012
Various modifications and adjustments can be applied to intake manifolds to fine tune them for…

How to Use a Dial Indicator

June 5, 2012
Dial indicators are one of the primary measuring tools used in precision engine building. They…
deck bridge

How to Use a Deck Bridge

May 17, 2012
A deck bridge is a basic comparator tool that allows you to easily read dimensional differences…

Priority Main Oiling

May 13, 2012
Most OEM and aftermarket race cylinder blocks are configured for priority main oiling to protect…

How to Install ARP Main Cap Studs

May 13, 2012
Serious race engine builders mostly use high strength ARP studs to anchor the main caps. Studs…
Stgraight Shot Oiling

Straight Shot Oiling

Many years ago racers decided that cross-drilling an additional hole straight through the mains…
Fillet Radius

How to Avoid Rod Bearing Fillet Ride

April 19, 2012
Fillet ride is a potential cause of rod bearing failure in racing and high performance engines.…
Crank Thrust

Checking Crankshaft End Thrust

April 18, 2012
Checking crankshaft thrust endplay is a basic engine building step that is sometimes frustrated…
ARP rod bolt stretch gauge

ARP Rod Bolt Stretch Gauge How-to

Most engine builders concede that torquing rod bolts during final assembly is no longer an accepted…
Drilling for pin oiler

CV Products Chevy Pin Oiler Installation

Most dedicated race blocks for Sprint Cup racing, Formula 1 and other high end applications are…