ok hi guys been awile, but heres the deal. its 91 ka24de-t has about 105k on it i have lost about 70 pounds of compression in my number 4 cly. the car is not burning oil i have checked more than once an drove it hard at 12 pounds of boost with someone behind me an no smoke. an its been about 3000 miles sence this started an still the oil is full an there is no oil in the water, or water in the oil. an the oil dont realy smelll like gase eather. the cars idle is prity good to stay at 800-825. runs good down the road to no over heating an any other nosies. an i have done a leak down teast but still can not tell what is that is realy causen this, an i have checked the compression like ten time over the past 3000 miles an it just hit 110 pounds every time. so its not geting worse. let me know what you guys think it might be. THINK YOU GUYS!!! for the help i am hopen to get.

25 people an no one has anthing to say about this. lmao come on lets get brain storming on this guys, what do you all think?

could be a valve issue, cracked or burnt

Thats what i think too cause i just drove 400 miles stright at 75-80 mph an no oil lose