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    • This is what the internals of a blown single turbo N54 engine tuned by Vishnu look like

      Everyone blows motors. Everyone. We have seen blown built motor supercharged S65 V8's from ESS-Tuning among engine failures from just about everyone for a multitude of reasons. That is why it is so important to make sure you have a quality tune on your motor as even if you use stronger aftermarket internals no engine is going to survive a bad tune. What happened here is up to debate and no doubt finger pointing will ensue but it is clear that something happened resulting in a blown motor.

      There are some big chunks of the pistons missing which certainly points to detonation as it looks like the motor beat itself to death. There is also some scorching and scuffing but there are many things that could have happened. Was the tune too aggressive and did the car run too lean? Was methanol distribution uneven and is that why some pistons look far worse than others? Not enough octane and continuous detonation? Faulty parts? Was the limit of these internals reached and surpassed?

      There are a million ways to spin this and this is not an indictment of Vishnu's tuning on the N54 although Vishnu's influence in N54 tuning has waned to the point of irrelevance. This is to educate that failures do indeed happen, everything has a limit, and as N54's with single turbos become more popular pushing the power output to well over double what the motor has from the factory means the margin for error becomes far smaller.

      Thank you to the owner for sharing these pictures and not hiding them.













































      This article was originally published in forum thread: blown N54 pics as requested started by Hausofboost View original post
      Comments 92 Comments
      1. babuski's Avatar
        babuski -
        What setup did you run when the engine blown?
      1. Hausofboost's Avatar
        Hausofboost -
        Click here to enlarge Originally Posted by babuski Click here to enlarge
        What setup did you run when the engine blown?
        FFTEC single turbo 62mm with meth injection and 22psi. This one was tuned by shiv.
      1. nikitino25's Avatar
        nikitino25 -
        Any idea what caused it or got a link to previous thread?
      1. 135pats's Avatar
        135pats -
        Click here to enlarge Originally Posted by Hausofboost Click here to enlarge
        FFTEC single turbo 62mm with meth injection and 22psi. This one was tuned by shiv.
        What type of advance were you targeting?

        That piston is pretty blown up. More than your typical blown ringland.
      1. The Ghost's Avatar
        The Ghost -
        What cylinder number is that (looks like 6)? Please describe your tune parameters at max power (AFR, timing, boost) and situation where it failed.

        Thanks for posing this!
      1. Tony@VargasTurboTech's Avatar
        Tony@VargasTurboTech -
        And that ladies and gentleman is called extreme detonation. It either went suddenly very lean, or was running too much timing, either one will do that in a split second if its bad enough.
      1. rdeterman's Avatar
        rdeterman -
        huh... haven't heard from shiv in along time...
      1. DBFIU's Avatar
        DBFIU -
        you call that an engine failure? PSSSHHH

        Go to hardcore50.com and watch what happens to domestic engine when boosted. German engines tend to tolerate failures much more handsomely. I remember seeing fords, chevys engine blocks literally $#@! their brains out. What you would see in the oil pan is 100 lbs of metal shards the size of golfballs. Pieces of piston, main caps, bent and broken rods, pieces of crank, peices of turbo, all kinds of insane $#@!.

        Anyway, this N54 looks like it got hot and piston wanted to sieze, looks like the ring lands got hot and badly warped then broke off when trying to expand in the bore. You can still see the crosshatch on the cylinder which means the engine stopped rotating very shortly after the actual failure event. Another testament to the awesomeness of stock BMW engines.
      1. sammy_0559's Avatar
        sammy_0559 -
        Click here to enlarge Originally Posted by DBFIU Click here to enlarge
        you call that an engine failure? PSSSHHH

        Go to hardcore50.com and watch what happens to domestic engine when boosted. German engines tend to tolerate failures much more handsomely. I remember seeing fords, chevys engine blocks literally $#@! their brains out. What you would see in the oil pan is 100 lbs of metal shards the size of golfballs. Pieces of piston, main caps, bent and broken rods, pieces of crank, peices of turbo, all kinds of insane $#@!.

        Anyway, this N54 looks like it got hot and piston wanted to sieze, looks like the ring lands got hot and badly warped then broke off when trying to expand in the bore. You can still see the crosshatch on the cylinder which means the engine stopped rotating very shortly after the actual failure event. Another testament to the awesomeness of stock BMW engines.
        Second blown up motor i get my hands on... gonna post it in individual thread. yeah this one sneezed pretty bad. rod bouncing around, oil pan exploded. customer did NOT bottom out lol

        Attachment 38404

        Attachment 38405
      1. 135pats's Avatar
        135pats -
        Whoa.
      1. babuski's Avatar
        babuski -
        Shiv tuned that one too?
      1. sammy_0559's Avatar
        sammy_0559 -
        Click here to enlarge Originally Posted by babuski Click here to enlarge
        Shiv tuned that one too?
        nope this one was running an old tune, jb4 and cobb backend flash. Rbs and conservatively tuned. gonna tear it down tomo and hopefully start a new thread.
      1. Dietcoke's Avatar
        Dietcoke -
        first one looks like $#@!ty fuel distribution ie: meth related failure. Thats what you get when you rely on a home garden irrigation system to fuel a car engine.
      1. froop's Avatar
        froop -
        Click here to enlarge Originally Posted by sammy_0559 Click here to enlarge
        nope this one was running an old tune, jb4 and cobb backend flash. Rbs and conservatively tuned. gonna tear it down tomo and hopefully start a new thread.
        That's pretty scary seeing as it's running only RBs and conservatively tuned with tuning options that many of us are running... Any idea what went wrong? Was it running meth?
      1. Flinchy's Avatar
        Flinchy -
        Click here to enlarge Originally Posted by froop Click here to enlarge
        Any idea what went wrong?
        Also curious! would like to know how it crapped itself so badly.
      1. The Ghost's Avatar
        The Ghost -
        Click here to enlarge Originally Posted by Dietcoke Click here to enlarge
        first one looks like $#@!ty fuel distribution ie: meth related failure. Thats what you get when you rely on a home garden irrigation system to fuel a car engine.
        This is just speculation. It is detonation related but ylj can't blame meth. I've broken ring lands just like that several times on a Subaru and it wasn't running meth at all. It also didn't happen immediately, but cracked over time them breaks (and still was drivable!).

        Let's let him post the facts.
      1. Legionofboom's Avatar
        Legionofboom -
        Shiv says:
        Attachment 38406

        Click here to enlarge
      1. hkninja's Avatar
        hkninja -
        damn! This $#@! just got real....
      1. Terry@BMS's Avatar
        Terry@BMS -
        With all the large turbo kits hitting the market now and these engines getting older, I think 2014 will be the year of the rebuild. We have a new FFTEC shortblock (finally) going in our E92 shortly. After that we'll tear it down and see what's broken. It runs/drives fine, but has a loss of compression in one hole, and smokes on deceleration.
      1. Ak335i's Avatar
        Ak335i -
        Click here to enlarge Originally Posted by Terry@BMS Click here to enlarge
        With all the large turbo kits hitting the market now and these engines getting older, I think 2014 will be the year of the rebuild. We have a new FFTEC shortblock (finally) going in our E92 shortly. After that we'll tear it down and see what's broken. It runs/drives fine, but has a loss of compression in one hole, and smokes on deceleration.
        yea,.. ill be building one as soon as i swap the trans. mines been fine so far but on 29plus psi who knows for how long lol