Photo Information for one sexy EX

I have a 2000 Honda trx90 I got from a buddy for free he said it needed a carb so I put his old carb back on it to try to get something out of it and it does not have any Spark. I already replaced the ignition coil I don't know much about four wheelers but I am a technician so I do know my way around a motor any electrical help would be wonderful or specs I don't have the best digital multimeter either.

Looking for help on wiring up stock wiring harness specifically for a '88 Honda TRX 300 
If anyone could drop a link or send me a PM it would be much appreciated 

I was riding my 400ex one day and when i shut it off to put it in the garage i tried to start it put again to drive it into the garge and it wouldnt start.I put a compression tester on it and its like 30 psi with out throttle and 0 psi WITH THROTTLE.
when i put my finger over the hole it fell likes its pulling my finger in more then its pushing it out 
 
Has good spark.When i took it into the shop the said it had 1oz of oil in it and a tiny pit of metal shaving(TINY BIT LIKE 30 flakes)
When i try to pull start (push start/roll start) it made a not normal sound  and wouldnt stay running.
If my bottom end is blow why would it still turn over fine,
Are my valves siezed or not working properly 
or is my timing off causeing valves to not open in correct order with fire 
PLEASE HELP all help is appreciated 

Some times I get spark some times not can ride then it just dies and wont get spark it has new cdi box and stator but I don't know if it has the pickup coil I'm at a loss