Help with 2.5L rings

[Vagabund07]

Having trouble getting my Daytona to run right. I bought the car really messed up and didn't really know what would be wrong with it, but decided to use it to learn some stuff about engines. I found out the head was cracked and replaced that, but after I got it back together it still wouldn't run. So my mechanic says that he thinks it might be the rings, it's burning oil pretty bad, and he did a compression test and got 120 (or 125, don't remember) across cylinders 1, 2, and 4, but cylinder 3 had 70. When it comes to engines, I don't know hardly anything, but I'm willing to learn. Replacing the head was rather easy, but that's about all I've done, aside from alternator, waterpump, radiator (the easy stuff). So my question is, does anyone have any suggestions as to what may be wrong with the car? And if it is the rings, what all would be required to replace them? Anyone have a simplified step by step to replacing the rings? Like just pull the engine and tear it apart or is there a way to get to them without taking the whole thing out? The car is a 91 Daytona, 2.5 4 cylinder n/a. Thanks.

[macncheese]

well, i'm guessing that when you had the head off, you didn't notice any scoring on that particular cylinder wall? if you're positive the new head was in good shape, it could be the rings. now, for the question. it IS possible to remove the head and oil pain (oops, pan) unbolt the rods, and shove them out the top, then hone the cylinders right there, wash all the crap out and put it back together with new rings, but i can't imagine doing it. anybody who has, please say how easy it was/wasn't. if you want to learn about this motor, take it out and tear it apart, and rebuild it all the way. that's how i learned em. of course, the first one lasted about 700 miles but i bet this next one goes a LONG way!! just my 2 cents
tony

[89turbomini]

I have installed new rings in a weekend not to hard as long as you know what your doin. Do it just like stated above. when your done honeing the wall. clean them like crazy with soapy water and then some carb cleaner and then put oil on them pop the pistons back in with new rings put it all back together and run it like a new engine for awhile. you said you had 120 for compression....well thats perfect for a turbo motor. im not sure what a n/a would be but that sounds kinda low. autozone sells rings for 30-40$ and grab a new head gasket and rod bearings