lookforjoe Posted November 27, 2012 Report Share Posted November 27, 2012 Yup there is probably no point in even doing the test right now then. I'm really not even trying to determine the exact amount lost, I kinda just wanted to know if it would be considerable/very noticeable. Don't BS this now. Doing the firickin' comp test & post back with the f'ing numbers. Worn motor + high boost will result in massive blow by, if you didn't already figure that out from Robbie's post. All that oil spray being recirc'd into the intake will do nothing but rob power. Link to comment Share on other sites More sharing options...
Brad850 Posted November 28, 2012 Author Report Share Posted November 28, 2012 Jeez...I never said I have an excessive amount of oil in the intake. No reason to beleive I have any problems. I'm not bs'ing anything... im doing iit when im home from school in late december Link to comment Share on other sites More sharing options...
Keep Calm Chive On Posted November 28, 2012 Report Share Posted November 28, 2012 Pocket Data Book : Turbo Motors: B5204T 1.1 - 1.3 MPa B5234T 1.1 - 1.3 MPa B5254T 1.1 - 1.3 MPa B5244T 1.1 - 1.3 MPa Non-Turbo Motors: B5202S 1.3 - 1.5 MPa B5204S 1.3 - 1.5 MPa B5234S 1.3 - 1.5 MPa B5252S 1.3 - 1.5 MPa B5254S 1.3 - 1.5 MPa B5244S 1.3 - 1.5 MPa Maximum difference between highest / lowest : 0.2 MPa This conversion turns into this for PSI Turbo Motors: B5204T 159.5415 - 188.5491 psi B5234T 159.5415 - 188.5491 psi B5254T 159.5415 - 188.5491 psi B5244T 159.5415 - 188.5491 psi Non-Turbo Motors: B5202S 188.5491 - 217.5566 psi B5204S 188.5491 - 217.5566 psi B5234S 188.5491 - 217.5566 psi B5252S 188.5491 - 217.5566 psi B5254S 188.5491 - 217.5566 psi B5244S 188.5491 - 217.5566 psi Maximum difference between highest / lowest : 29.0075 psi this is ironic because I want to test my compression as well... its fun to know but at the same time when you don't know, its scary as fuck because I can't afford mentally & financially that I might / might not have an issue haha Link to comment Share on other sites More sharing options...
Piston Slapper Posted November 28, 2012 Report Share Posted November 28, 2012 Eric brings up a very valid point, the 160-188 psi specification does assume that the cams are still set as they were from the factory. Should probably make sure they're set that way before doing a comp test and freaking out about the numbers. It occurs to me that you could probably use a compression test in between cam timing tweaks to give you a better idea of what effect your changes are having. Link to comment Share on other sites More sharing options...
kateean2 Posted November 28, 2012 Report Share Posted November 28, 2012 Lower compression also allows for higher boost given that everything else in the system is OK. Link to comment Share on other sites More sharing options...
PoLonY Posted November 28, 2012 Report Share Posted November 28, 2012 Lower compression also allows for higher boost given that everything else in the system is OK. Your are confusing compression pressure test with the compression ratio a low compression ratio ie 8.5:1 will still give high readings on a pressure test if everything is ok... Link to comment Share on other sites More sharing options...
Keep Calm Chive On Posted November 28, 2012 Report Share Posted November 28, 2012 165 psi across the board for me on a 1/2 warmed up car & a shitty looking autozone gauge with meh seals... I'll take it Link to comment Share on other sites More sharing options...
Brad850 Posted November 28, 2012 Author Report Share Posted November 28, 2012 aww yeaa Link to comment Share on other sites More sharing options...
Piston Slapper Posted November 30, 2012 Report Share Posted November 30, 2012 Lower compression also allows for higher boost given that everything else in the system is OK. As someone else mentioned, you're thinking of compression ratios, not compression test. The difference between expected compression test results of the Turbos and N/As is a result of their different compression ratios. But the turbo's test results being below spec isn't an indicator of a lower comp ratio, but of the cylinder not being able to hold pressure as well it used to. Link to comment Share on other sites More sharing options...
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