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Results of a Compression Test (EA82T)
Posted 26 October 2003 - 05:06 PM
The turbo side head has a crack between the exhaust port and the water jacket, so I plan to replace the heads. The reason I did a compression test was to see how worn the piston rings were. I want to know if I should replace the whole engine or just the heads. BTW, the engine should have no more than 70,000 miles on it because it was a used Japan engine gurranteed to have no more than 50,000 miles and I think I put about 15,000-20,000 miles on it.
Here are the results:
BTW, I cranked the engine about 5 times for each reading.
Reading 1: 125 psi
Reading 2: 125 psi
Reading 1: 130 psi
Reading 2: 137-140 psi
Reading 1: 138-140 psi
Reading 2: 137 psi
Reading 1: 127-130 psi
Reading 2: 133
After I did this test, I decided to do it again but this time I squirted some oil into the cylinders.
Reading 1: 175 psi
Reading 2: 170-175 psi
Reading 1: 165 psi
Reading 2: 163 psi
Reading 1: 155 psi
Reading 2: 155-160 psi
Reading 1: 155 psi
Reading 2: 155
I am concerned about how much the pressures raised after I squirted oil into the cylinders. Although I admit that trying to get the oil to go into the cylinders was a pain in the butt and I think I got carried away and put too much oil into each cylinder.
Are these readings normal? Is it normal for the pressures to raise this much after oil is squirted into the cylinders? Are my piston rings worn?
Posted 26 October 2003 - 11:57 PM
Posted 27 October 2003 - 12:27 AM
Posted 27 October 2003 - 08:21 AM
Posted 27 October 2003 - 11:04 AM
Posted 27 October 2003 - 11:37 AM
Posted 27 October 2003 - 02:24 PM
BTW, The compression rose quickly after the first and second strokes on each cylinder.
I ran the car down the high way before the compression test and the engine runs great, even with the crack in the turbo side head and the large exhaust leak in the crossover pipe .
Whats a leak down check?
Posted 27 October 2003 - 02:33 PM
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