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Originally Posted by stoves
(Post 1247796)
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.
<br /><br /> <br />Hmmm. I'll google some. Seems like something easy to do. What about the epoxy coming off? |
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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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 fuck shit 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. |
Originally Posted by relte
(Post 1247976)
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.
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. |
Yes. that is a solution. But not a cheap one.
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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.
-Ryan |
Spoonfeed pictures?
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3 Attachment(s)
https://www.miataturbo.net/attachmen...ine=1436560257
https://www.miataturbo.net/attachmen...ine=1436560257 https://www.miataturbo.net/attachmen...ine=1436560257 https://cimg8.ibsrv.net/gimg/www.mia...cdab52a92e.jpg 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. |
Thanks. Somehow Miataturbo.net got blocked at work and i fail at searching on my phone.
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Originally Posted by aidandj
(Post 1248037)
Thanks. Somehow Miataturbo.net got blocked at work and i fail at searching on my phone.
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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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Originally Posted by aidandj
(Post 1248041)
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.
Now who do you think is using that bandwidth? |
Originally Posted by aidandj
(Post 1248041)
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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Originally Posted by bahurd
(Post 1248049)
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" />
<br />That's why they give you internet right? |
My most common wear item for replacement
An engine. Lasted about 350 laps. My brakes and tires were still good…
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This is an awesome list! Thanks, Emilio. As someone interested in getting some track time in my turbo Miata I decided to go through it for my build to spot mistakes. I assume this list is more for a dedicated race car rather than street/track car.
Originally Posted by emilio700
(Post 806314)
I'll take some educated guesses at some of the mistakes illeniummx5 made. Mistakes myself and everyone else here has made at some point. Willing to bet his team made at least 75% of these throughout development and still had 25% when they finally threw in the towel
...
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That list is 11 years old. Both me and the Miataverse have learned a lot since then. Fully possible to miss half the stuff on that list and still be sorta reliable on track. Big variable is the driver. Go easy enough and an FM kit on an otherwise stock NA8 will survive an HPDE. Race pace for an enduro with a quick driver is an entirely different proposition.
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Originally Posted by emilio700
(Post 1619611)
That list is 11 years old. Both me and the Miataverse have learned a lot since then. Fully possible to miss half the stuff on that list and still be sorta reliable on track. Big variable is the driver. Go easy enough and an FM kit on an otherwise stock NA8 will survive an HPDE. Race pace for an enduro with a quick driver is an entirely different proposition.
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Originally Posted by GohCart
(Post 1619612)
Most comprehensive list I've seen. Not sure if you did so, but ranking the list might be kinda cool.
IOW, no easy answers. Gotta do homework for your usage, fuel, budget. |
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