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Pistons
Created: December 20, 2013
Small piston applications and availability have been changing over time
Created: September 21, 2010
The following chart shows the SAE recommended Automotive compression ring end gaps. These recommendations are followed for the majority of the ring line unless a certain application requires deviation from the chart.
Created: July 14, 2005
Pistons - Mega piston performance report The two other articles I have done on this site concerned what pistons are all about, different design and construction pros and cons, material specs, ring set-ups and so on. Under 'Pistons - Favourable features for maximum performance' it would seem that th...
Created: July 02, 2001
This is another of those subjects abused for ‘bar stool b*llsh*t’ one-upmanship. Ignorance is
the main problem. Particularly as trying to get any really useful information
out of the manufacturers concerned.
Created: July 02, 2001
The overriding factor that influences just what is best for an A-Series engine is the block's propensity for flex at higher rpm, and the crank's equal propensity for flex at the same sort of rpm levels. Both combine to require a piston that is as stable as possible to maintain effective and consistent ring-seal performance.
Created: January 30, 2000
Over the years, there have probably been a dozen "stock" 1275 pistons. Currently, three different designs are available from AE/Hepolite as "stock" replacements. All have an 8.4cc dished top, but compression ratios are carried by changing pin height (Pin height is the distance from the top of the piston to the center of the wrist pin- see dimension "A" shown here).
