JazzAvi8r Posted November 12, 2017 Author Share Posted November 12, 2017 #3 is 55psi dry Link to comment Share on other sites More sharing options...
JazzAvi8r Posted November 12, 2017 Author Share Posted November 12, 2017 #4 is 40psi dry Link to comment Share on other sites More sharing options...
Max Capacity Posted November 12, 2017 Share Posted November 12, 2017 You sound like you know what your doing. When you rotated the crank by hand after the TB install did all the marks line back up ? Make sure all the connectors are back where they belong. So no one touched the valve clearances ? 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
1-3-2-4 Posted November 12, 2017 Share Posted November 12, 2017 It's gotta be somehow how the head is mated with the block or the head gasket it's self Link to comment Share on other sites More sharing options...
JazzAvi8r Posted November 12, 2017 Author Share Posted November 12, 2017 Yes, all the marks lined up again no issues. All connectors are hooked up as appropriate. No one,touched the valve,clearances. Link to comment Share on other sites More sharing options...
Max Capacity Posted November 12, 2017 Share Posted November 12, 2017 Is it possible to put the HG on backwards or is there a left and a right HG ? Just trying to figure something out... I have been looking in the service manual on pages 72 and 1757 to see if I can think of things. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
1-3-2-4 Posted November 12, 2017 Share Posted November 12, 2017 If you put it on backwards some of the coolant openings and I think a oil passage does not line up.. damn I wished I taken a picture. Link to comment Share on other sites More sharing options...
JazzAvi8r Posted November 12, 2017 Author Share Posted November 12, 2017 So, we put some air through cyl4 and rotated the crank so that the exhaust valves are open. We can hear and feel air coming out of the oil fill tube. Anything,else i can test for? Link to comment Share on other sites More sharing options...
JazzAvi8r Posted November 12, 2017 Author Share Posted November 12, 2017 I really feel like its a timing issue. But my cohorts seem to think otherwise Link to comment Share on other sites More sharing options...
JazzAvi8r Posted November 12, 2017 Author Share Posted November 12, 2017 I'm 99.9% confident I put the HG on correctly. And even if they weren't on correctly, that would only prevent oil and coolant, not compression. It should still start Link to comment Share on other sites More sharing options...
Max Capacity Posted November 12, 2017 Share Posted November 12, 2017 The rings will let some air pass, its not a perfect seal. If your timing marks line up after rotating they must be correct. Yet other then putting the HG backwards... what's left ? 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
1-3-2-4 Posted November 12, 2017 Share Posted November 12, 2017 The rings will let some air pass, its not a perfect seal. If your timing marks line up after rotating they must be correct. Yet other then putting the HG backwards... what's left ? Torquing the head down in the right order and right numbers. Link to comment Share on other sites More sharing options...
JazzAvi8r Posted November 12, 2017 Author Share Posted November 12, 2017 yup, i used brand new OEM head bolts, torqued them down IAW the vacay pics using my recently calibrated Snap-On digital torque wrench. I'm pretty confident the heads are on properly Link to comment Share on other sites More sharing options...
Max Capacity Posted November 12, 2017 Share Posted November 12, 2017 Just reread post 1, make sure you didn't reverse some of the electrical connectors. I believe someone else has done that. Found it and changed them to the correct place and the car started. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
JazzAvi8r Posted November 12, 2017 Author Share Posted November 12, 2017 which connectors? i was sure to label the coil pack connectors and even the coils to make sure i put those back in the right place. the wiring harness is such a specific length, i cant fathom how i would get a connector wrong. can you point me to that thread and I'll take a gander. riddle me this: is it possible for the crank to be 180 off? basically, for every one rotation of the cams, the crank rotates twice, correct? perhaps i need take the TB off again, rotate the crank 360 and put it back on?!? i dont know, i'm just spitballing here. i'm getting really frustrated at this thing now. I was hoping to have the car listed for sale tomorrow and now i'm in it so deep i probably wont make much profit on it. Link to comment Share on other sites More sharing options...
JazzAvi8r Posted November 12, 2017 Author Share Posted November 12, 2017 thinking about the sensor connectors on each head, they are all unique between the cam position sensor, the TGV motor, the AVCS, and the only two that may be swapped are the injectors, but due to the length of the harness, it's highly unlikely that the injector connectors are swapped. Link to comment Share on other sites More sharing options...
Max Capacity Posted November 12, 2017 Share Posted November 12, 2017 Seem to recall the crank position sensor and oil pressure switch...or something like that. go over all the connectors and the big one on the shock tower. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
JazzAvi8r Posted November 12, 2017 Author Share Posted November 12, 2017 hmm...ok, i'll double check. thanks for the heads up. any insight on my 180 off crank position theory? Link to comment Share on other sites More sharing options...
Max Capacity Posted November 12, 2017 Share Posted November 12, 2017 Only if you picked up on #2 piston at TDC instead of # 1. #1 is the front passenger side piston. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
JazzAvi8r Posted November 12, 2017 Author Share Posted November 12, 2017 wait, i thought these engines weren't #1TDC timed. i thought the pistons were mid stroke when the crankshaft timing mark is aligned?!? Link to comment Share on other sites More sharing options...
SBT Posted November 12, 2017 Share Posted November 12, 2017 wont allow me to upload pics for some reason so i'll try photobucket See Post #6. Loaded these all from PB using the URL load feature in Manage Attachments. - Pro amore Dei et patriam et populum - Link to comment Share on other sites More sharing options...
MilesA Posted November 12, 2017 Share Posted November 12, 2017 ...any insight on my 180 off crank position theory? Just looking at your photos, your valve timing looks correct. The crankshaft could not be off by 180 degrees because you have the timing mark at 12 o'clock. Being a 4-stroke engine, the crankshaft turns twice for each complete cycle. However, mechanically for the pistons and crankshaft every rotation is the same. It's really the valve and ignition timing that differentiate the compression/exhaust or power/intake strokes. Are you getting spark and fuel? Link to comment Share on other sites More sharing options...
1-3-2-4 Posted November 12, 2017 Share Posted November 12, 2017 hmm...ok, i'll double check. thanks for the heads up. any insight on my 180 off crank position theory? No the way you have the crank is fine.. here is mine when I set my timing Link to comment Share on other sites More sharing options...
JazzAvi8r Posted November 12, 2017 Author Share Posted November 12, 2017 I am getting spark and fuel. So if my timing is set correctly, and lets say worse case scenario, I bent a valve or two on the driver side, why is my compression so low on the passenger side? Link to comment Share on other sites More sharing options...
MilesA Posted November 12, 2017 Share Posted November 12, 2017 If you are getting spark and fuel, I would expect the engine would at least sputter weakly when trying to start it, even if compression is low. Just as a WAG, is it possible to exchange the camshafts for left & right head by mistake? I believe they are stamped with some identifying info. If you can set up a leakdown test, put each cylinder in turn at its TDC and put it under pressure, you should be able to hear air escaping if a cylinder is not holding pressure. Where the air is escaping from may give you a clue what is going on. Link to comment Share on other sites More sharing options...
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