Garage Talk

Stock lifter bore = 19mm Harley roller diameter = 18.6mm The cam followers used in Sportster engines, K models, big twin side valve models, and the side-valve W model series were a slightly shorter version of the followers used in the larger mo...

Some info on single beehive springs. The biggest benefit of a beehive spring is that you can use a retainer of a smaller diameter - less weight. A bugpack or berg retainer is roughly 21g... a retainer for the PSI spring is roughly 11g (the same as...

Cold parkerising kits - http://www.caswellplating.com/metal-finishing-solutions/black-oxide-kits/black-oxide-kit-1-25-gal.html Details Black Oxide Kit This new technique was developed by the commercial gun blue manufacturers as a more environm...

Displacement chart for easy reference [file id="23"]940613.jpg[/file] [img]http://vdubber.com/index.php?option=com_easysocial&view=groups&layout=preview&fileid=23&tmpl=component[/img]...

Another article outlining mods on stock heads, this one has some photos as well (unfortunately the photos were not available on the last article) http://www.aircooledtech.com/port_polish/ Port & Polish Your Heads Squeeze some extra ponies out of t...

This is a reproduction of an article from the now defunct cal-look.com website. Preserved for future reference. Basic Head Porting By Thomas Simpson, aka. "Ohio Tom" Editor's note: No matter what type of engine you are building, weather it ...

If you are doing sheet metal work and haven't made yourself a slapper, this is a great tutorial on how to make and use one... [file id="22"]17424836_10212903940060139_1724237730192706318_n.jpg[/file] [file id="21"]17362087_10212903939940136_202...

More great info on combustion chamber & piston design http://forum.grumpysperformance.com/viewtopic.php?f=55&t=2718&p=12119&hilit=calculate+octane#p12119 http://forum.grumpysperformance.com/viewtopic.php?f=70&t=4683&p=12672&hilit=calculate+octane#p12...

After being on the lookout for a reasonably priced Stuska Dyno (and not finding one) I've decided to have a go at building a basic engine dyno myself. I've got an understanding of how they work and have a basic idea mapped out, all I really need to g...