Author Topic: Intake tract  (Read 5202 times)

0 Members and 1 Guest are viewing this topic.

Offline wobblywalrus

  • Hero Member
  • *****
  • Posts: 5503
Re: Intake tract
« Reply #15 on: March 14, 2014, 12:44:31 AM »
Konon, some experience I had.  The intake tracts with the carbs just where BSA put them can be made to provide more mixture than those engines can use.  The dellorto carb website has a handy graph for carb size.  It gives realistic estimates for carbs on those engines.

Looking at my build diary you will notice how my engines have moderate compression and cam timing.  I pay a lot of attention to intake harmonics, exhaust tuning, and getting the proper spark advance curve.  These are habits I developed from tuning A-65's.  The engines are not durable with high compression or radical cams.  I was forced to look hard at other means of getting performance.