--------------------------------------------------------------------------------
Hello all. I don't post here too much cause I drive a cougar, not a mustang, but I have a problem that I can't figure out, so I am trying everywhere I can think of to see if anyone knows what is going on. The situation is I just finished swapping a 393 into my 91 cougar. The engine runs good (has a few tuning issues that still need to be sorted out, but overall runs good for a fresh build) and pulls like crazy. The problem is it is burning oil at an alarming rate. When I first started the car, it was blowing enough smoke that you couldn't see through it, even at idle. The smoke calmed down a little bit, and now it doesn't smoke at idle, but every time I get on it, it still lays down a ton of smoke. So far I've driven the car a total of about 30 miles, and in that time (plus the time idling, maybe an hour total in 3 20 minute segments) it burned 2.5 quarts of oil! I was driving it today, and it lost oil pressure so I pulled over and checked the level and there was nothing on the dipstick, so I topped it off with 2.5 quarts and the oil pressure was fine, so I drove it to the shop (only about 5 miles) watching the oil pressure gauge the whole time.
Now, I built the motor myself, and I checked every ring end gap, staggered the rings properly, checked all the bearing clearances, etc. so I know all of those things are correct. I used low tension moly rings, so at first I was kind of hoping that the rings just needed more time to seat, but now having burned so much oil, I know there has to be something else wrong. Hopefully someone will know what is going on. Thanks in advance.
Mike
PS. Pics of the car are located at http://www.putfile.com/blenderhead/images/150240
Hello all. I don't post here too much cause I drive a cougar, not a mustang, but I have a problem that I can't figure out, so I am trying everywhere I can think of to see if anyone knows what is going on. The situation is I just finished swapping a 393 into my 91 cougar. The engine runs good (has a few tuning issues that still need to be sorted out, but overall runs good for a fresh build) and pulls like crazy. The problem is it is burning oil at an alarming rate. When I first started the car, it was blowing enough smoke that you couldn't see through it, even at idle. The smoke calmed down a little bit, and now it doesn't smoke at idle, but every time I get on it, it still lays down a ton of smoke. So far I've driven the car a total of about 30 miles, and in that time (plus the time idling, maybe an hour total in 3 20 minute segments) it burned 2.5 quarts of oil! I was driving it today, and it lost oil pressure so I pulled over and checked the level and there was nothing on the dipstick, so I topped it off with 2.5 quarts and the oil pressure was fine, so I drove it to the shop (only about 5 miles) watching the oil pressure gauge the whole time.
Now, I built the motor myself, and I checked every ring end gap, staggered the rings properly, checked all the bearing clearances, etc. so I know all of those things are correct. I used low tension moly rings, so at first I was kind of hoping that the rings just needed more time to seat, but now having burned so much oil, I know there has to be something else wrong. Hopefully someone will know what is going on. Thanks in advance.
Mike
PS. Pics of the car are located at http://www.putfile.com/blenderhead/images/150240