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View Full Version : Cold Compression Test- KA24DE

nissandr1ft
10-11-2006, 07:14 PM
Im planning on picking up a KA24DE tommorrow from the junkyard. I want to compression check it before i spend my time pulling it from the car. I know the car has no oil so Im not gonna try to start the car, and warm it up. So what i was wondering what kind of numbers should I expect out of a cold motor. At the moment I just know I want them to be pretty even all the way across. Besideds that i was just gonna look for burnt oil in the head/valve cover, check the plugs, look for remnants of milky oil, and look for major oil or coolent leaks. Is there anything else I could check before I spend my time pulling this motor?
statik
10-11-2006, 08:49 PM
Pretty much anything above 140psi on all cylinders, each adjacent cylinder should be withing 14psi of eachother. You may also want to drop the oil pan and check for metal and such.
ThaiTea
10-12-2006, 01:10 AM
my engine/car has 179k on it...it been has been a track+AGGRESSiVE street car car for the last 3 years...it see a lot of high rev almost everytime it is driven....3week we did a compression test and i was SUPER surprise....it cranked in at 144-146 on ALL cylinders(if i remember correctly it was cold but warm day)....i mean dam it's a 91 that has been driven hard but driven hard nicely...gotta love the KA....good luck on ur purchase
nissandr1ft
10-12-2006, 07:16 AM
yeah, my old engine ran 185 across the board, but i sold the hatch a few years ago. This cars motor smokes horribly, and came to 110 across the b ard til you pour oil down the cylinders...then it gets to about 175. Thanks for information, Ill see how this one works out.
2_fast_240
10-13-2006, 11:01 AM
so are you planning on getting the engine. ive always thought that if you pour oil down the cylinders and the comp. goes up then the rings are bad. especially if its smoking. in which case i wouldnt get the motor unless your planning on rebuilding it. i could be wrong on this though.
nissandr1ft
10-13-2006, 11:56 AM
The motor that I talked about smoking with 110 across the board is the current engine in my car. Im pulling that out after I find a good enough junkyard motor.