Quote:
Originally Posted by patrickt
We've had this thread topic many times before. It is without question more accurate to bench dyno an engine destined for a Cobra with the primaries and side pipes on. Many of us had it done (me, for instance). But, I'll let the matter drop. I'm sure Chas will chime in though on him with something snappy like "Pat's just trying to stir the pot, but he is right, and you'll just be fooling yourself if you rely on open pipe numbers. But, of course, we lie best when we lie to ourselves...." |
Sure, it's more of an indication of real world performance if headers and sidepipes are on. But the actual peak dyno numbers aren't that important to me. We chose the parts we did, and Brent did a very careful job optimizing the build by porting, adjusting the carb, matching the intake, etc. So really the build is what it is at this point. A big peak number is nice, but we do the dyno run for other reasons too, like verifying the integrity of the parts and the assembly, checking for leaks, and optimizing the tune.