Airbox Problems

Chris Hinrichs · Joined: 21 Jul 2001 Posts: 474

my airbox is blowing air out of it and not sucking air in durning the next 2 heats i ran my highest rpms and fastest lap i have ever ran what does this mean..

thanks a lot

Jimmy Moore · Joined: 26 Jul 2001 Posts: 664

Sounds like you broke the skirt on the piston.

Jean Stafford · Posted: Fri Sep 07, 2001 8:45 am Post subject: Airbox Problems

I think Jimmy is onto something here Chris.

It does sound like you broke a portion of the skirt off the piston on the intake side. This will allow for the better high end performance, due to a change in the port timing for the intake cycle.

As there are limits to the intake duration in both organizations, you should have a competient engine buider check it out and replace the piston if necessary. In addition, the broken portion will allow for more piston "slap" and a much shorter rod life, so check it out soon.