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> /6 loud noise after rebuild, with video
tornik550
post Jul 10 2015, 01:23 PM
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Obviously at this point I just need to leave my engine work to the pro's however I simply enjoy working on the engine.

I rebuilt my /6 engine as a 9.5:1 compression 2.7l. When I first put the engine in the car and tried to start it a few months back, I had found that my kids managed to get a 13mm into the #5 cylinder which damaged the head. I had the head repaired and put everything back together and started the engine. It starts ok however there is a very loud noise which is obvious in the video.

Background- I put oil fed tensioners in as part of the upgrade. I did not prime them with oil on installation. When I had my issue with a mug in cyl #5, I did not replace the piston cause there was minimal visible damage. There was no apparent damage to the cylinder jug. I did not check the con rod cause I didn't remove the cylinder and piston when I was fixing this issue.

Any ideas of what could be the issue? To me, it sounds like the chain is rubbing on the case or something like that. It is so loud though that I cannot really tell where it is coming from other than the drivers side of the engine. My big concern is- did I damage my con rod when I had my 13mm in cyl 5 issue. I did the test where you pull the spark plug wire on the cylinder that has the con rod issue and there was no difference in the sound.

http://youtu.be/X7Y2XqGN3Fc
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tornik550   /6 loud noise after rebuild   Jul 10 2015, 01:23 PM
Mark Henry   Hard to tell because it doesn't run long enoug...   Jul 10 2015, 01:36 PM
tornik550   I suspected the tensioners also. It does sound lik...   Jul 10 2015, 01:48 PM
Luke M   That's the timing chains slapping around and m...   Jul 10 2015, 03:09 PM
tornik550   That's the timing chains slapping around and ...   Jul 10 2015, 03:56 PM
Luke M   That's the timing chains slapping around and...   Jul 10 2015, 04:46 PM
tornik550   [quote name='tornik550' post='2208558' date='Jul ...   Jul 10 2015, 05:03 PM
Luke M   [quote name='tornik550' post='2208558' date='Jul...   Jul 10 2015, 06:23 PM
sixnotfour   recheck your valve lash first   Jul 10 2015, 06:52 PM
Luke M   recheck your valve lash first I maybe hearing t...   Jul 10 2015, 07:25 PM
rudedude   Did you check the alignment of the cam sprockets b...   Jul 10 2015, 09:43 PM
tornik550   Just popped off the valve covers. Looks like the...   Jul 10 2015, 09:54 PM
Luke M   Just popped off the valve covers. Looks like th...   Jul 11 2015, 06:22 AM
tornik550   Just popped off the valve covers. Looks like t...   Jul 11 2015, 07:16 AM
Mark Henry   There is also a mod to make your hydraulic tension...   Jul 11 2015, 07:27 AM
euro911   Install the little collars on the tensioners so if...   Jul 11 2015, 11:44 AM
Mark Henry   Install the little collars on the tensioners so i...   Jul 15 2015, 08:21 AM
tornik550   I corrected the valve lash, bolted everything then...   Jul 14 2015, 08:59 PM
Luke M   I corrected the valve lash, bolted everything the...   Jul 15 2015, 08:35 AM
tornik550   I took a picture just before I put the housing cov...   Jul 15 2015, 10:04 AM
Mark Henry   Normal, that's not the cause of the noise. Th...   Jul 15 2015, 10:38 AM
tornik550   Could it still be the tensioners even though the c...   Jul 15 2015, 11:08 AM
mskala   Could it still be the tensioners even though the ...   Jul 15 2015, 12:38 PM
tornik550   I went over everything again. I found that I had ...   Jul 15 2015, 07:24 PM
Mark Henry   I went over everything again. I found that I had...   Jul 15 2015, 09:20 PM
Luke M   I went over everything again. I found that I had...   Jul 18 2015, 07:22 AM
tornik550   I went over everything again. I found that I ha...   Jul 18 2015, 08:38 AM
mskala   In your pic I couldn't have said that rasmp wa...   Jul 16 2015, 04:54 AM
Mark Henry   In your pic I couldn't have said that rasmp w...   Jul 16 2015, 05:16 AM
tornik550   In your pic I couldn't have said that rasmp w...   Jul 16 2015, 05:31 AM
dlestep   go through procedure for TDC, place pin in cam spr...   Jul 18 2015, 01:38 PM
tornik550   go through procedure for TDC, place pin in cam sp...   Jul 18 2015, 01:54 PM
396   How many miles does the motor have where you thoug...   Jul 18 2015, 02:16 PM
tornik550   How many miles does the motor have where you thou...   Jul 18 2015, 02:45 PM
sixnotfour   now its time to check cam timing..and in relation ...   Jul 18 2015, 03:09 PM


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