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turbo reliability on track

Old 07-09-2015, 06:07 PM
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Originally Posted by stoves View Post
People have put epoxy on the screw heads in the throttle body shaft. It should prevent the screws from backing out, or hopefully from ejecting themselves if the throttle shaft breaks.
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<br />Hmmm. I'll google some. Seems like something easy to do. What about the epoxy coming off?
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Old 07-10-2015, 01:48 PM
  #222  
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I was worried about the epoxy coming off so I took a punch and placed two punch indents right on the edge of the threaded end of the screw that protrudes on the other end of the throttle plate. This deformed the screw just enough that it would not be able to back out if it did loosen up. I don't know if anyone else has tried this.
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Old 07-10-2015, 02:03 PM
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I've never heard of the screws backing out. My understanding is that vibrations cause the screws to break, at which point the broken off screw heads get sucked into the motor and **** **** up. The epoxy doesn't prevent the throttle body from failing, it just contains the screw heads long enough for you to get the motor shut down.

I epoxied my TB in 2012 with cheap 5-minute epoxy and it's still holding fine. I just prepped the surface with brake clean and then slathered a thin layer over the screws down onto the plate. I was paranoid about it for a while and kept checking it, but it's been fine. I even tried peeling the edges but they're holding strong.
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Old 07-10-2015, 03:24 PM
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Originally Posted by relte View Post
I was worried about the epoxy coming off so I took a punch and placed two punch indents right on the edge of the threaded end of the screw that protrudes on the other end of the throttle plate. This deformed the screw just enough that it would not be able to back out if it did loosen up. I don't know if anyone else has tried this.
That's how you stake a gas key on an AR-15.

blah blah blah edit- apparently this issue has been done to death by emilio and he uses epoxy. Even jb weld, which I was going to suggest, has already been tried with inferior results.

Last edited by AlwaysBroken; 07-10-2015 at 03:39 PM. Reason: the magic of google showed me the error of my ways
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Old 07-10-2015, 03:26 PM
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Yes. that is a solution. But not a cheap one.
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Old 07-10-2015, 03:33 PM
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The screw is only part of the issue. The shaft also likes to snap at the threaded hole for the screw (weakest point in the shaft). A glob of epoxy reinforces the shaft as well as locking the screw in position. It's a crude fix, but it's simple and works.

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Old 07-10-2015, 03:34 PM
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Spoonfeed pictures?
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Old 07-10-2015, 05:30 PM
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Ill reiterate, the issues isn't the screw backing out, but the heads popping off. I have yet to see a pic of a broken shaft or broken screw where the threaded section(s) wernt still in the shaft.
Attached Thumbnails turbo reliability on track-80-51608d1344525483_1_6_throttle_sticking_open_imag1272_9ea83d37ee418d2debbf235fcef41f13b0fc4ca4.jpg   turbo reliability on track-80-51607d1344525483_1_6_throttle_sticking_open_imag1270_1e3bc1ea79569cd392e0bdb31d40e11de05d5e6d.jpg   turbo reliability on track-80-faf0395f_48c143a443349143ecbcb2ea32505289c65f468a.jpg  
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Old 07-10-2015, 05:33 PM
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Thanks. Somehow Miataturbo.net got blocked at work and i fail at searching on my phone.
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Old 07-10-2015, 05:35 PM
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Originally Posted by aidandj View Post
Thanks. Somehow Miataturbo.net got blocked at work and i fail at searching on my phone.
I was going to call you a lazy noob. Check the edit, 1 pic added.
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Old 07-10-2015, 05:37 PM
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Somehow the whole internet brands network got banned. Like in the past week. I can't get on my ford truck forum either. I hope its a mistake.
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Old 07-10-2015, 05:39 PM
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Originally Posted by aidandj View Post
Somehow the whole internet brands network got banned. Like in the past week. I can't get on my ford truck forum either. I hope its a mistake.
In my experience, the IT department blocks the sites using the most bandwidth that arnt business related.

Now who do you think is using that bandwidth?
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Old 07-10-2015, 05:45 PM
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Originally Posted by aidandj View Post
Somehow the whole internet brands network got banned. Like in the past week. I can't get on my ford truck forum either. I hope its a mistake.
1st job out of college and already using the internet for non-work stuff?
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Old 07-10-2015, 05:46 PM
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Originally Posted by bahurd View Post
1st job out of college and already using the internet for non-work stuff? <img src="images/smilies/gay.gif" border="0" alt="" title="Giggle" smilieid="25" class="inlineimg" />
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<br />That's why they give you internet right?
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