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  1. #1
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    Gintani exposes BMW S65 Motor Bearings/Blown Motor (Video Inside)

    Sorry this took so long, we have been extremely busy at the shop.

    As promised here is a video of Paul Walker's Bearing. We also have included the explanation of Drew's (DLSJ5) blown motor.



    Thanks for your time, we will try to post some close up pics ASAP.

    We hope this clears up some of your questions and concerns. :thumbsup:

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    Click here to enlarge Originally Posted by Raz@Gintani Click here to enlarge
    We hope this clears up some of your questions
    it does, thank you

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    I have been waiting for this forever. About time guys, this is exactly how you should do it.

    Nice to see Alex get on video and explain it.

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    Hey Raz, did you receive my PM on M3Post? My username overthere is Soorena.

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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    I have been waiting for this forever. About time guys, this is exactly how you should do it.

    Nice to see Alex get on video and explain it.
    Took over 1 year to get this, great info but way too late imho...drews motor should have been explained within weeks or even months after it happened. Good thing they saved Paul Walker's S65, looks like it was a ticking time bomb

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    Click here to enlarge Originally Posted by ERM324 Click here to enlarge
    Took over 1 year to get this, great info but way too late imho...drews motor should have been explained within weeks or even months after it happened. Good thing they saved Paul Walker's S65, looks like it was a ticking time bomb
    Explain in what way? That it ran the bearings? I think the video has been posting as it might be a more common problem. I suspect there is a relation in raised rev limiters to the bearing wear as I have seen similar local to me with cars running high rpm. I wonder what Limit Drew and Paul where running too.

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    Click here to enlarge Originally Posted by George Smooth Click here to enlarge
    I suspect there is a relation in raised rev limiters to the bearing wear as I have seen similar local to me with cars running high rpm
    ive been wondering the same thing lately.
    i wish there was a video of the ""sound" it makes. im almost tempted to say the raised rev limiter+ pulley combo could not be a good thing on even stock cars.
    as i was telling someone yesterday, i may be having that issue at 33k miles. it sounds like an exhaust leak, but i cant be sure. im hoping it is, and that the previous owner had a cat delete and things just arent tight, or some variation of an easily fixed problem. i have an 09 car and thi is exactly why a blower isnt on it yet. i need to make sure the stock motor has no issues first.

    +rep for anyone that can find me a video of what this sound sounds like...

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    Click here to enlarge Originally Posted by ERM324 Click here to enlarge
    Took over 1 year to get this, great info but way too late imho...drews motor should have been explained within weeks or even months after it happened. Good thing they saved Paul Walker's S65, looks like it was a ticking time bomb
    Paul Walker's motor is irrelevant really as he tracked the crap out of it and was going to upgrade anyway. The main thing is it didn't give haters more canon fodder to criticize pointlessly.

    Yes, it should have come sooner. Better late than never.

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    I wish they posted what my bearings looked like.

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    This is one of the reasons I usually dont prefer pulleys, as it $#@!s with the harmonics when the damper is removed. If its kept intact I can see its purpose, but for all the work and cutting my hands up id rather find 5hp somewhere else.

    Spinning the motor beyond 8400 or extended track use (high G forces in the oil pan) could definitley cause possible cavitation of the oil pump. Nissan motors are notorious for this.

    Hopefully Alex and crew will find a way to remedy this, an upgraded high volume oil pump sounds like fun to me Click here to enlarge

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    Click here to enlarge Originally Posted by Matt@Camber-Toe Click here to enlarge
    This is one of the reasons I usually dont prefer pulleys, as it $#@!s with the harmonics when the damper is removed. If its kept intact I can see its purpose, but for all the work and cutting my hands up id rather find 5hp somewhere else.
    It has been shown conclusively that running no harmonic damper on GM LSx engines will actually cause them to lose horsepower, all other things being equal. I don't understand why anyone concerned with engine longevity would ever do such a thing.

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    Click here to enlarge Originally Posted by andrew20195 Click here to enlarge
    It has been shown conclusively that running no harmonic damper on GM LSx engines will actually cause them to lose horsepower, all other things being equal. I don't understand why anyone concerned with engine longevity would ever do such a thing.
    Id rather do something like an ATi damper on the crank.

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    +1 I prefer the Fluidamper, but its crazy to run a milled down pulley or lightweight solid pulley.

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    No harmonic on the factory pulley + gintani cars use stock rev limit.

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    glad they cleared the air up hope it was a little sooner but still great.
    F10 M5 : ??????
    E90 M3: 11.2 126.7 with a 1.8 60ft Street Tires, Stock Interior,DSC on

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    great info

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    Awesome and much appreciated... time for a slick 50 commercial Click here to enlarge

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    damn, oil problems suck. hope you guys get it figured. hope it doesn't come down to crank harmonics or the oil pump design.

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    Too tight in regards to bearings and horrible oil pump designs will lead majority of these S/C engines down a road that no one likes.

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    Forcing more oil is not going to fix that problem.

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    So then how is the problem fixed?

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    Click here to enlarge Originally Posted by LZH Click here to enlarge
    Forcing more oil is not going to fix that problem.
    So what is the way to get around it? redesign the oil passages in the block?

    I remember the VG30 motors in the 300ZXs had poor castings for the coolant and oil passages inside the head. There was so much aluminum flash in the back of the head it was restricting flow, and Mike Kojima wrote up a good article on how to clear the holes out to allow an uninterrupted supply of fluid to the back cylinders..

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    Click here to enlarge Originally Posted by Matt@Camber-Toe Click here to enlarge
    So what is the way to get around it? redesign the oil passages in the block?
    This is what I want to know. How do you solve this and why won't different bearings have a positive effect?

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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    So then how is the problem fixed?
    Click here to enlarge Originally Posted by Matt@Camber-Toe Click here to enlarge
    So what is the way to get around it? redesign the oil passages in the block?
    I honestly don't know much about the S65, but after watching that video I'd have to say more oil isn't the problem...COOLER oil is the fix. Has anyone dry sumped it ? Additional/dedicated oil coolers ? Obviously revs are killing the rod bearings...why not use higher tolerance bearings ? That's an easy fix though and if you want to throw lots of power and revs at it then you have to get creative and find the underlying problem/design flaw (for big power). Clearly this motor is running out of endurance in stock form. What else has Gintani looked at ? What's the aerodynamic mess look like in the crankcase ? Cross drilling the rod journals ? Oil air separators and crankcase vents ? What is the oil pump design/speed and what percentage of crankshaft speed is it being driven ? Is air being drawn through the oil in the pan? Main bearings can last a lot longer than rod bearings under such circumstances and any compressed air thru the pump might be the cause ? In my experience rod bearings fail rapidly when subjected to air an oil mixed. Has anyone used an accusump with anti-backfeed one way valve for sudden pressure loss ??

    There are SO many things that need to be looked at and IMO this video shows nothing more than the rod bearings overheating and letting go. Kinda like what's happened to me a few times:



    Click here to enlargeClick here to enlargeClick here to enlarge

  25. #25
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    Click here to enlarge Originally Posted by LZH Click here to enlarge
    Has anyone dry sumped it ?
    Yes, Turner Motorsport sells a dry sump kit.

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