A very good article, but everything I've seen Vizard write is very good. The numbers are pretty consistent with the dyno stuff I've seen and my own DeuceCoupe Gonkulator computer that tries to capture it in simulation.

It's not like you gain 50hp just from a little more quench as is sometimes implied, but there is some gain, and mostly the quench and swirl then allows you to run more compression which gains even more. The sets of numbers tell that story.

Thanks for the link!

 Originally Posted By: Mean buzzen half dozen A.K.A. Hank
Nice write up about quench & the importance of machining the blocks & cyl heads to maximize HP & reduce the chance of detonation.

If you get a better quench area, usually, you can actually run more compresssion, run more boost etc.


http://www.enginebuildermag.com/Article/2266/surfacing_equipment_can_increase_horsepower.aspx


MBHD