compression test results from my evo 9
#31
Evolving Member
iTrader: (10)
lots of misinformation in this post...
you cant say that every test should result in 180 psi, the reasoning behind this is that every tester will show slightly different. i have 2 testers and on the exact same motor one always reads about 15psi lower than the other tester.
you should only do a "wet" test if one or more of your cylinders is off by 10-15% from the others. if you add a couple drops of oil and the pressure goes up then you have "bad" rings, if the pressure doesnt go anywhere then you are having valve issues
those results look just fine and i wouldnt worry about them
you cant say that every test should result in 180 psi, the reasoning behind this is that every tester will show slightly different. i have 2 testers and on the exact same motor one always reads about 15psi lower than the other tester.
you should only do a "wet" test if one or more of your cylinders is off by 10-15% from the others. if you add a couple drops of oil and the pressure goes up then you have "bad" rings, if the pressure doesnt go anywhere then you are having valve issues
those results look just fine and i wouldnt worry about them
#32
Evolving Member
So your psi is a bit down and your worried that running e85 will wear it out even faster right? Well yeh it will so you can crawl into the corner roll up into the fetal position and suck your thump with worry, or you can do like we did in the old days, if it's not blowing to much smoke and fowling plugs and using oil, means it's legal and it's still kicking butt well go and get your stuff done and enjoy your car!! I'f your a DIY guy, maybe when one of the things I mentioned changes then start thinking about a pull down and what budget you have and if you want to go with additional hardening ie rods, pistons, beehives, cams and maybe a bigger turbo to take advantage while the motor is down or if you don't have the budget just a set of new rings and a hone, check pistons, reseat valves then back together and off you go, when my time comes I'd wait till I could notice the power drop or oiling problem the pull it down mysel as a project and stroke it, a little DIY mild head work with behives and s2s then if the turbo was still good, keep it and do a nice torquey tune then when the turbo goes, upspec to fp red.
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2003, adjacent, compression, cylinders, engine, evo, evolution, evolutionn, lancer, leak, leakdown, low, mitsubishi, numbers, optimum, results, temperature, test