Leakdown Test??

[spincobra03]

I need an answer quickly so thats why I posted in the engine/tuning as well. Here are my results from the leakdown test on a potential 04 cobra that I might buy. Not sure what is good, does anyone know??

#5 8% #1 2%

#6 7% #2 4%

#7 7% #3 4%

#8 8% #4 6%

 

[Quicktime_GT]

man I looked for some information on this before my self.. I have found all different sorts of opinions..

One thing I did find though , is that the FAA requires a rebuild if there is over 10% in aircraft engines..

Check this out as well;
http://www.motorcycleproject.com/motorcycle/text/leakdown.html

 

[wjurls]

Those numbers are real good. I'm assuming the engine was warm to get that low of % numbers? On a cold engine anything 20% or less is good.