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So I took in my 8 to do a compression test since the warranty is about to expire on the engine, and these are the results I received.
Rotor#1. 8.3 8.3 8.3
Rotor#2. 7.9 7.9 8.1
Do those numbers seem good? The Service Advisor there said that it was performing very well and there was no carbon build up at all, but I just wanted a few more opinions on this if possible.
Also, I have 67,491 miles on it right now and the engine was first replaced at 48,000.
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Last edited by ShadowDragon78; 05-02-2012 at 11:06 PM.
I wouldn't say those are really good results. The differences between the rotors is pretty high and lets face it, without knowing exactly what RPM these tests were done at, they mean nothing. You can hope those values are normalized but that defeats the purpose of the test. Make them retest you for free and make sure you know exactly what what RPM they were done at (250rpm). Sometimes even the pros make mistakes.
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-93 Spirit R Replica built @ IRP. Enzo tuned
They tested my #1 rotor at 283rpm, 8.4, 8.2, 8.2 and my #2 rotor 277rpm 8.8, 8.4, 8.4.
I know it says it should be done at 250rpm. So basically what I'm asking is if they did my test correct, or should i go back and get them to do it again?
No, they can't change the starter speed. There is a chart to normalize the numbers "as if" it was done at 250rpm. The original guy didn't have the speed at all, so it could be unnormalized and really high RPM, in which case his engine isn't as good as if the RPM was normal or even low RPM crank speed.
You got all the numbers, they did it fine. Just use the normalization chart to adjust the numbers down to 250RPM.
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