caramall2 Posted October 11, 2013 Share Posted October 11, 2013 Sorry to hear. I'm betting rings :-( Did you do the test or a shop? Link to comment Share on other sites More sharing options...
need bb Posted October 11, 2013 Author Share Posted October 11, 2013 Someone local who had the tools and a compressor did the test. It was leaking from the rings. Link to comment Share on other sites More sharing options...
caramall2 Posted October 12, 2013 Share Posted October 12, 2013 How many miles on your LGT? Link to comment Share on other sites More sharing options...
xt2005bonbon Posted October 12, 2013 Share Posted October 12, 2013 It was leaking from the rings. . I usually hear of one cylinder having ringland failure, but two on the same bank, wow. Sorry to hear man. Good luck on the new build. Link to comment Share on other sites More sharing options...
heiche Posted October 12, 2013 Share Posted October 12, 2013 poor 2 and 4. seems like either/both of them take a hit more often than the others. may be because they have a couple more degrees of timing in stock (and some aftermarket) tunes. the theory is that they did that to make the bank having the knock sensor (driver side) experience the knock first. BtSsm - Android app/Bluetooth adapter. LV, logging, gauges and more. For 05-14 Legacy (GT, 2.5, 3.0, 3.6), 02-14 WRX, 04-14 STi, 04-14 FXT, 05-09 OBXT Link to comment Share on other sites More sharing options...
need bb Posted April 25, 2014 Author Share Posted April 25, 2014 Thought I would update this thread in case others have the same. Pistons 2 & 4 had cracked ringland during the engine teardown. Link to comment Share on other sites More sharing options...
caramall2 Posted April 26, 2014 Share Posted April 26, 2014 Thanks for the update. That's what I figured. Sometime compression is "so so" but leak down almost always shows up low in those instances (for you both compression and leak down were obviously bad). Oh the joys and sorrows of the turbo subie. Hope all goes well with your rebuild. Cylinder 1 - 148psi / 1% Cylinder 2 - 90psi / 50% Cylinder 3 - 145psi / 2% Cylinder 4 - 80psi / 56% Link to comment Share on other sites More sharing options...
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