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Senior Member
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Posts: 775
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08-25-2015, 04:10 PM
Sorry if it has been mentioned already, but what was determined to be the cause? Anything those of us not seeing issues can do preventatively? I'd love to avoid this. If you can't post here, please PM me.
Obviously if it's rod failure then not much to do.. but is that the cause, or another symptom?
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Senior Member
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08-25-2015, 04:30 PM
Quote:
Originally Posted by ShocknAwe
Sorry if it has been mentioned already, but what was determined to be the cause? Anything those of us not seeing issues can do preventatively? I'd love to avoid this. If you can't post here, please PM me.
Obviously if it's rod failure then not much to do.. but is that the cause, or another symptom?
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If you read the OP's post properly, you would read that he suspects injector stuck open. |
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08-25-2015, 05:01 PM
Quote:
Originally Posted by AUbeast86
I'm rebuilding the engine but going back stock lower end.
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Why a stock lower? Spend the extra grand and get good rods!
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Senior Member
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08-25-2015, 05:17 PM
Quote:
Originally Posted by livnpaintball2
Why a stock lower? Spend the extra grand and get good rods!
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The stock lower end is more than sufficient for my power goals. Don't think you're immune to nuking your engine just because you have forged rods. Hydro lock will bust any engine. Diesels see it all the time due to failed injectors. |
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Senior Member
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08-25-2015, 06:29 PM
Quote:
Originally Posted by _ink
If you read the OP's post properly, you would read that he suspects injector stuck open.
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Ah, glossed over the hydrolock comment, thanks. On the other hand, straight answers and less attitude and/or drama next time would be great. Get enough of that bull**** on bimmerpost. |
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08-25-2015, 06:58 PM
Quote:
Originally Posted by ShocknAwe
Get enough of that bull**** on bimmerpost.
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Exactly why I never go over there. N54tech is home field for me  |
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Junior Member
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Posts: 61
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Car: 08 135i 6AT
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08-25-2015, 07:48 PM
I'm sorry for your bad luck man.
I know there have been lots of injector problems and revisions leaking, not providing a fuel etc.
is this the first time and injector has had a catastrophic failure?
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08-26-2015, 04:58 AM
Quote:
Originally Posted by Optigrab
I'm sorry for your bad luck man.
I know there have been lots of injector problems and revisions leaking, not providing a fuel etc.
is this the first time and injector has had a catastrophic failure?
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Thanks man. No worries. I look at it as an opportunity to learn something new. |
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08-26-2015, 05:26 AM
I told you from the beginning its was a bent rod.
07 335i sleeper - PT5858 single turbo - stock exhaust - stock wheels
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08-26-2015, 05:42 AM
Quote:
Originally Posted by wtfmarine
I told you from the beginning its was a bent rod.
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Lol |
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08-26-2015, 09:04 AM
Was there a inspection with a oscilloscope done at any point?
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08-26-2015, 11:15 AM
Quote:
Originally Posted by Optigrab
Was there a inspection with a oscilloscope done at any point?
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Do you mean a bore scope? |
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08-26-2015, 11:55 AM
No to the bore scope. Leak down and compression tests are supposed to be the "be all end all" of engine health indicators so I didn't see the need. Plus, even with the head off, it was still very difficult to see the height difference of the #1 piston at TDC. Only through the PCV modification was I able to determine that it was the lower end. I suspected a broken or fused oil control ring but it wasn't until I completely disassembled the piston did I see the bend in the rod.
Last edited by AUbeast86; 08-26-2015 at 12:03 PM..
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08-26-2015, 02:53 PM
Quote:
Originally Posted by boost junkie
Do you mean a bore scope?
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Yeah lol sorry working on a side project with a oscilliscope so it was on my mind
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08-26-2015, 03:11 PM
I'm surprised there's not a hole in your block. The other hydrolocked threads have seen blew a hole in the block
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08-26-2015, 06:04 PM
It would be interesting to know what version injectors had caused this if you have it handy.
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08-26-2015, 06:14 PM
And whether your failed injector was factory or aftermarket like (RockAuto)?
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08-26-2015, 06:33 PM
Quote:
Originally Posted by _ink
It would be interesting to know what version injectors had caused this if you have it handy.
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They were index -09. The original injectors, |
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08-27-2015, 01:19 AM
Did you ever send your oil in for analysis prior to this? I remember a while back another member threw a rod because of a leaking injector. Blackstone found high amounts of fuel in his oil
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08-27-2015, 10:10 AM
Quote:
Originally Posted by samstryker
Did you ever send your oil in for analysis prior to this? I remember a while back another member threw a rod because of a leaking injector. Blackstone found high amounts of fuel in his oil
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I didn't. |
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08-27-2015, 10:13 AM
Quote:
Originally Posted by Optigrab
I'm surprised there's not a hole in your block. The other hydrolocked threads have seen blew a hole in the block
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Me too. I was very surprised it didn't bust, if hydro lock was in fact the root cause. If it was hydro lock, it was only enough to slightly bend the rod and it just got worse over time even after I replaced all the injectors. No way to completely tell. |
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08-27-2015, 11:27 AM
Quote:
Originally Posted by AUbeast86
Me too. I was very surprised it didn't bust, if hydro lock was in fact the root cause. If it was hydro lock, it was only enough to slightly bend the rod and it just got worse over time even after I replaced all the injectors. No way to completely tell.
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Can I ask how much boost you were running and if you were using meth?  |
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08-27-2015, 11:36 AM
Quote:
Originally Posted by Optigrab
Can I ask how much boost you were running and if you were using meth? |
20psi with a port meth injection system I designed incorporating the Aquamist HFS-4 system (7 total nozzles). I know I had a bad injector because it would show up in logs and codes. I just can't confirm it was the root cause but I'm 90% sure it was due to the fact it was only in cylinder one. The logs returned to normal and the codes went away after I replaced the injector but the damage had already been done. |
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08-27-2015, 11:46 AM
Quote:
Originally Posted by AUbeast86
20psi with a port meth injection system I designed incorporating the Aquamist HFS-4 system (7 total nozzles). I know I had a bad injector because it would show up in logs and codes. I just can't confirm it was the root cause but I'm 90% sure it was due to the fact it was only in cylinder one. The logs returned to normal and the codes went away after I replaced the injector but the damage had already been done.
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Interesting... What was the abnormal stuff that showed in the logs for cylinder 1? |
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08-27-2015, 11:56 AM
Quote:
Originally Posted by Optigrab
Interesting... What was the abnormal stuff that showed in the logs for cylinder 1?
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Extremely lean in the logs with misfires and rail shut off codes. |
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