Compression Test.....Results are in.....
I did a compression test last night on the 92 b16a DA. I just don't feel it runs as good as it should.
Results 205-190-210-205 the 3 cylinders that are high, gave us a reading right away, the low one took a few more cranks to get there. What do you think? I'm now getting a CEL light after driving for a bit, if I turn off the car while driving and back on, it will go away, then come back after a few minutes. I'll have to check that today. Also getting the oil light to come on and off, while the car is cold, after it runs for a little while it goes away. I had a similar problem with the b18 in that car before, I changed the pressure switch and that corrected the problem. I have a new pressure switch for this car. I'll try that today also. The guy that owned the engine, just told me he did run a turbo on it, he showed me the kit, and it was an SSAC :-X :-X, ran for a few months with no problem. Now he told me he had no fuel management and was running 6-8psi. I guess the compression test isn't too bad, but that lower cylinder could be a problem. |
Re: Compression Test.....Results are in.....
no one ??? ??? ???
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Re: Compression Test.....Results are in.....
I dont see that being a problem.Spec is what max 25-30psi between cylinders?What is the CEL it is throwing?I would investigate that and take care of the oil light.The 6psi no management :-X Good thing he didnt manage to do any damage.What did you finally decide to do with all your cars?
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Re: Compression Test.....Results are in.....
most likely a ringland or 2 are shot.
my gsr with 3 broken ringlads still had mint compression, but it ran like ----. |
Re: Compression Test.....Results are in.....
this is a b16 correct? 190 is low. Some damage somewhere in that motor. Leakdown.
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Re: Compression Test.....Results are in.....
my b16 throws out like 170 psi +/- 10 psi in all cylinders, boosted for about 6 months, still runs like a champ, no broken ringlands, maybe a bit of ring wear, but it still runs as smooth as it did the day i got it from top end motorsports over a year ago...
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Re: Compression Test.....Results are in.....
170 is less than d series :o
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Re: Compression Test.....Results are in.....
Originally Posted by Ravage70
170 is less than d series :o
oil pressure thing sounds like a dented oilpan blocking the pickup. |
Re: Compression Test.....Results are in.....
Yes it is a b16a,
I want to sell the car, but I wanted to test it and try to find the problem. But if it is that much I won't bother just sell it. I have not have time to check the CEL. Maybe I'll change my mind and end up putting some high comp pistons. I'll have to check the oil pan later also. |
Re: Compression Test.....Results are in.....
I might as well ask also. I guess I can just buy a leakdown tester at any autoparts store. On a b16 what % of leak shoul I expect or be allowed. up to 5% maybe?
if only the one cylinder is bad I guess I can flatrate it and just fix the one. a minimal build would require what pistons and rings and a headgasket? I'm not sure I want to do this yet, but we'll see. |
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