CI Tech Archive
We've taken the Classic Inlines Tech Section and modernized it! If you see something that needs to be edited, contact me.
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Flow Testing the "Log" Cylinder Heads
This tech article is a "work in progress". Information will be added as it becomes available. Over the past few years we've flow tested several Australian 250-2V cylinder heads, as well as our own Aluminum cylinder heads. However we've always wondered how the cast iron "log heads" stacked up... -
Selecting the Proper Valve Springs
Selecting the Proper Valve Springs Valve springs are one of the most critical components of your engine. It is very important to match the camshaft and it's potential RPM range with the correct spring rate. We will attempt to explain it in this article, but first lets go over some valve spring... -
How to Read Spark Plugs
Being able to "read" a spark plug can be a valuable tuning aid. By examining the insulator firing nose color, an experienced engine tuner can determine a great deal about the engine's overall operating condition. In general, a light tan/gray color tells you that the spark plug is operating at...
The single most important factor to be considered in selecting the proper compression (top) ring face coating material is the service requirements the engine will be operated under. Will the engine be subjected to unusual speed or load (high temp conditions), stop and go short trip driving...
The most common items over looked during assembly and installation of a rebuilt motor, are the motor mounts, transmission mounts, and the harmonic damper (balancer). Motor mounts are commonly bonded together using a variety of rubber compounds, while most OEM dampers utilize an elastomer...
Every engine requires a certain amount of oil flow to keep the bearings, camshaft, valvetrain and other moving parts lubricated. Oil forms a barrier that prevents metal-to-metal contact and reduces friction and wear. In the bearings, it forms a wedge that actually lifts and supports the...
1. Should I rebuild my 200/250ci six, or swap to a V8 like everyone else?
Published in Legendary Ford's July/August 2008 issue.
The inline six by design will produce more torque pound for pound than a V8. The reason is simple; a V8 spins the crankshaft 90 degrees for each stroke, while the inline six turns the crank 120 degrees between strokes. This means for every...
Ever wonder what size motor you have? If so, your not the only one. To the inexperienced enthusiast all small sixes look identical, however there are minor differences which can be easily spotted if you know what to look for. In this article we'll cover a majority of the differences, for engines...