I am 6ft 185 lbs. high metabolisim, had approx. 11 , 12oz beers , 5pm - 2 am, I have a EtG test today at 4 , its tues , approx. 62 hours later, in your opinion what percentage do I have of failing test limit 500nl ?

I would give it about even odds. The test is rated for 60-80 hours, but many will test negative sooner than others. It is impossible to know what factors may influence the numbers. Unless you did something stupid like drink a lot of water you probably have a 50/50 chance.

A question for you. What happens if you fail? What will you lose?

5 days in jail< I haven't drank a lot of water till a few hours ago trying to dilute

Why is drinking lots of water stupid?

They're look for a specific chemical in your urine. If you drink a lot of water then you will dilute your urine, less of that chemical will be there and when you test you will score lower. They also test for known chemicals that are at a known level. IF they see that it is diluted then it will show that you're trying to cover something up and you will fail the test.

Good luck. You might want to check into ways of not drinking when you're prohibited from drinking. Your have less troubles like this.