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    • S65 V8 Rod Bearing Failure in Drew's Gintani Supercharged M3 - covered under Gintani warranty

      I have been reluctant to post about this earlier as I wanted to give Gintani ample time to look at the engine to try and determine what happened before I posted. We have an idea what caused it but currently the motor has not been broken down to do a full inspection. Given the current drama / speculation on the forums, I felt, along with Gintani, that we should post now and let everyone know that a failure did occur on my car, and then follow up later when we have more solid detailed information. As of now I know of no other Gintani car that has had a failure, but mine.

      The engine had been making a slight ticking noise on the passenger side wheel well for about a month before the failure, it sounded like an exhaust leak, but it is difficult to pinpoint noises on this engine. It appeared to have been a bad rod bearing that was causing the noise. Eventually the bearing failed, the rod seized onto the crank shaft, broke and one half came out the side of the block. That is all I currently know for certain, when Gintani tears the motor down they can investigate further to try and pinpoint exactly what it was, then post pictures, and a more accurate detailed analysis. It appears though that the Active Autowerke car that failed, is very similar in nature to this failure.

      A few things to point out -

      1. I've been running 9psi for over 10K miles on the motor, currently no other kit runs this much boost.
      2. When I dynoed the car, and removed the air filter, it hit 11psi, and you can see on the dyno a huge dip up top, which could be detonation.
      3. The seals on my 1st blower blew out while doing some spirited driving, eventually the car ran out of oil, this could have damaged the bearing.
      4. Other 2008 motors have been torn down and found to have wear on the rod bearings that could have eventually failed as mine did.

      The current status is that a long block is on it's way, Gintani is covering the cost of the motor and all labor, which is above and beyond what most companies would do. I am extremely thankful to them for doing so, they have always taken care of me. Right now my plans are that I am going to keep the kit, but most likely will lower the boost, hopefully I will be up and running soon, with more dyno's, video's, vbox data, etc.


      This article was originally published in forum thread: Rod Bearing Failure... started by DLSJ5 View original post
      Comments 132 Comments
      1. DLSJ5's Avatar
        DLSJ5 -
        Click here to enlarge Originally Posted by spdu4ea Click here to enlarge
        Sorry to hear Drew, hope to see you back up and running soon. We probably won't know anything definitive until you get a chance to open it up but the top two causes of rod bearing failure are:


        #1 Oil

        a) Low pressure (low level, aeration, starvation due to high G-s, bearing tolerances too loose from wear or poor assembly, faulty pump etc)
        b) contamination/degradation (old oil, too hot, too cold, mixed with antifreeze or fuel, etc)
        c) improper weight (e.g. using 0w-20 when 10w-60 is specified)


        #2 Revving too high... especially:

        a) before engine is fully warmed (tolerances are greater on cold engine)
        b) if engine harmonics become an issue (unbalanced/underdamped)
        c) engine hardware not up to task (stretching rod bolts)


        Far below those two are things like excessive combustion pressure (usually detonation). Possible, but they usually cause other damage first.


        As an aside, some may remember that early S54 engines had what most people call a rod bearing recall, but the cause was not poor bearing choice/fit but rather faulty oil pumps combined with an unacceptable level of assembly line contamination. The service action was 3-pronged: update to the new pump, replace the rod bearings in case they were worn, and update the DME's cold-start programming (perhaps among the changes were lower rpm targets when cold)
        Thank you, great information. I very much appreciate your insight and knowledge, you are always are extremely helpful.

        It's not fun, but I've had several friends go through the same thing, but not so lucky in terms of how their situation was handled, many of them were left in the cold. I'm very lucky that I'm being taken care of.
      1. Sticky's Avatar
        Sticky -
        Promoted to front page to show we are not biased toward anyone which has been an incorrect assertion. Unfortunate situation but we will discuss the good and the bad.

        I will be chiming in with more information on the faulty rod bearings BMW has replaced in all models subsequent to '08 builds shortly.
      1. M33's Avatar
        M33 -
        Sorry to hear what happened Drew , i must say its really good that they are taking care of you like that !
        Hope things work out and see you up and running soon !!

        Good luck ...............
      1. DLSJ5's Avatar
        DLSJ5 -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Promoted to front page to show we are not biased to anyone which has been an incorrect assertion. Unfortunate situation but we will discuss the good and the bad.

        I will be chiming in with more information on the faulty rod bearings BMW has replaced in all models subsequent to '08 builds shortly.
        I have no problem with that.
      1. DLSJ5's Avatar
        DLSJ5 -
        Click here to enlarge Originally Posted by M33 Click here to enlarge
        Sorry to hear what happened Drew , i must say its really good that they are taking care of you like that !
        Hope things work out and see you up and running soon !!

        Good luck ...............
        I appreciate that Jaime, thank you.
      1. SSDD's Avatar
        SSDD -
        Sorry to hear about your problem, but I'm glad they're working with you on getting it repaired.
      1. DLSJ5's Avatar
        DLSJ5 -
        Click here to enlarge Originally Posted by SSDD Click here to enlarge
        Sorry to hear about your problem, but I'm glad they're working with you on getting it repaired.
        Thanks man.
      1. DD GT3 RD's Avatar
        DD GT3 RD -
        Thanks for posting drew....

        on a side note...when I had my M3, i drove over a parking block with the front bumper, tore some tubing, and whatever connects the intercooler and drained the intercooler of all its water. Tracked the car not knowing I did all this....car was perfect at the track, but point is when I found out, brought it to Gintani and they took care of everthing for me even thou it was my fault.
      1. Sticky's Avatar
        Sticky -
        Wanted to add, other cars that had been disassembled saw premature bearing wear. I think that individual will likely chime in at some point but others have shown tremendous bearing wear and that there have been failures in stock cars due to the early rod bearings.

        Going to get the part numbers shortly.
      1. Itsbrokeagain's Avatar
        Itsbrokeagain -
        That's some great customer service! You were going above and beyond the norm. I have a feeling the suspected bad bearings coupled with the fact you almost ran out of oil when the seals went, probably just spelled doom in a shorter length of time.


        Are there any plans to beef the engine up more? Or is a stock engine just going to go in?
      1. DLSJ5's Avatar
        DLSJ5 -
        Click here to enlarge Originally Posted by Matt@Camber-Toe Click here to enlarge
        That's some great customer service! You were going above and beyond the norm. I have a feeling the suspected bad bearings coupled with the fact you almost ran out of oil when the seals went, probably just spelled doom in a shorter length of time.


        Are there any plans to beef the engine up more? Or is a stock engine just going to go in?
        Hopefully we will find out. The new engine will not be beefed up, I think the internals are strong, this appears to be bearing issue. I do not plan on lowering compression and going with more boost in the future. Most likely when I go big power it will be a turbo from the factory.
      1. Itsbrokeagain's Avatar
        Itsbrokeagain -
        Gotcha. Good luck!
      1. Yukohama's Avatar
        Yukohama -
        now that's good customer service there! so sad it happened, but 10k in boosted miles sounds like loads of fun already Click here to enlarge
      1. BrenM3's Avatar
        BrenM3 -
        In most cars, rod bearing failure is as a result of low oil / pressure. I'd start there.
      1. M33's Avatar
        M33 -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Promoted to front page to show we are not biased toward anyone which has been an incorrect assertion. Unfortunate situation but we will discuss the good and the bad.

        I will be chiming in with more information on the faulty rod bearings BMW has replaced in all models subsequent to '08 builds shortly.
        They did not make DCT cars in 08 only 09 . Drews car is a DCT Click here to enlarge
        Rod bearing is a failure caused by detonation over extended periods of time ( it has happened to my 02 APR mototrsport built 1.8t GTi runing 30psi 3 times and i gave up on that piece of crap )
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by M33 Click here to enlarge
        They did not make DCT cars in 08 only 09 . Drews car is a DCT Click here to enlarge
        Rod bearing is a failure caused by detonation over extended periods of time ( it has happened to my 02 APR mototrsport built 1.8t GTi runing 30psi 3 times and i gave up on that piece of crap )
        Bud, some '09 cars were built in '08. From what I have read, the switch was made AFTER '08.

        And it begins, detonation over extended periods of time? So the stock cars that failed were detonating? Please, a faulty rod bearing can cause a rod bearing failure or else how do you explain all the failures being '08 builds that are tied to this are everything from SC'd, stroked, to stock?
      1. M33's Avatar
        M33 -
        Def a Click here to enlarge for taking care you ...
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by M33 Click here to enlarge
        Def a Click here to enlarge for taking care you ...
        To be honest, they didn't have to. That really is going above and beyond. Other companies would not do this (and have not).
      1. M33's Avatar
        M33 -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Bud, some '09 cars were built in '08. From what I have read, the switch was made AFTER '08.

        And it begins, detonation over extended periods of time? So the stock cars that failed were detonating? Please, a faulty rod bearing can cause a rod bearing failure or else how do you explain all the failures being '08 builds that are tied to this are everything from SC'd, stroked, to stock?
        Drew put a solid 10k boosted miles on his car if it were a bearing i think would have let go a long time ago , that's why i'm leaning towards the detonation , running high boost on these motors is scary especially if the tune is not spot on ..
      1. M33's Avatar
        M33 -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        To be honest, they didn't have to. That really is going above and beyond. Other companies would not do this (and have not).
        oh snap .... i actually agree with you for once Click here to enlarge
        Drew deserves it !! he went above and beyond from day one Click here to enlarge