Notices
General Miata Chat A place to talk about anything Miata

141% Throttle!

Thread Tools
 
Search this Thread
 
Old Jul 16, 2016 | 11:33 AM
  #1  
patsmx5's Avatar
Thread Starter
Elite Member
iTrader: (16)
 
Joined: Aug 2007
Posts: 9,406
Total Cats: 559
From: Houston, TX
Default 141% Throttle!

This happened last night:

141% Throttle!-throttle%2520had%2520a%2520bad%2520day_zpswpz5ethm.png


Snapped the throttle shaft in half, blew one end out of the throttle since I was boosting. Somehow the gods of speed were watching, it only broke in two pieces and one end blew out the throttle, other part stayed in the throttle body and no parts were ingested! Screws are fine, the shaft just snapped in half. Failed at 7650 RPMs

The funny thing is, I ran the same throttle for 9 years, and a few months ago I swapped it for a newer one with the idea being that my old one had seen so much abuse it was likely to fail any day. The new one failed instead!

Car is being needy lately, had several things all break at once. Oh well, this could have been 20x worse if it sucked in the parts into my motor.

EDIT: Also for some reason the img tags are showing the worlds smallest picture now? I guess there forum software changed or something?
Attached Thumbnails 141% Throttle!-throttle%2520had%2520a%2520bad%2520day_zpswpz5ethm.png  

Last edited by patsmx5; Jul 16, 2016 at 11:55 AM.
Old Jul 16, 2016 | 11:36 AM
  #2  
aidandj's Avatar
SADFab Destructive Testing Engineer
iTrader: (5)
 
Joined: Apr 2014
Posts: 18,643
Total Cats: 1,870
From: Beaverton, USA
Default

Let's see some carnage pics.
Old Jul 16, 2016 | 11:50 AM
  #3  
Joe Perez's Avatar
Boost Pope
iTrader: (8)
 
Joined: Sep 2005
Posts: 34,402
Total Cats: 7,523
From: Chicago. (The less-murder part.)
Default

Originally Posted by patsmx5
EDIT: Also for some reason the img tags are showing the worlds smallest picture now? I guess there forum software changed or something?
Only because you are a complete and utter failure, both as a human being and as an engine builder.



Old Jul 16, 2016 | 11:51 AM
  #4  
patsmx5's Avatar
Thread Starter
Elite Member
iTrader: (16)
 
Joined: Aug 2007
Posts: 9,406
Total Cats: 559
From: Houston, TX
Default

So I have to upload as attachments now, no more img tags? Uploading carnage pics now.
Old Jul 16, 2016 | 11:56 AM
  #5  
patsmx5's Avatar
Thread Starter
Elite Member
iTrader: (16)
 
Joined: Aug 2007
Posts: 9,406
Total Cats: 559
From: Houston, TX
Default

















pics
Attached Thumbnails 141% Throttle!-20160716_103526.jpg  
Old Jul 16, 2016 | 12:09 PM
  #6  
psyber_0ptix's Avatar
Elite Member
iTrader: (4)
 
Joined: Mar 2012
Posts: 4,648
Total Cats: 544
From: Northern VA
Default

Oh my god
Old Jul 16, 2016 | 12:11 PM
  #7  
afm's Avatar
afm
Senior Member
iTrader: (3)
 
Joined: Nov 2015
Posts: 985
Total Cats: 510
From: Berkeley, CA
Default

It's amazing that that unsupported screw didn't get ingested. Was this shaft epoxied or JB welded at all?
Old Jul 16, 2016 | 12:13 PM
  #8  
Joe Perez's Avatar
Boost Pope
iTrader: (8)
 
Joined: Sep 2005
Posts: 34,402
Total Cats: 7,523
From: Chicago. (The less-murder part.)
Default

I know, right?

It's like "Dude, stop bitching about having a little bit of metal flowing through your engine, and just ******* man up already. Godless Commie is dealing with a ******* military coup right now, and you're all like 'oh, woe is me, I had a little tiny piece of metal break off of my throttle shaft.' *****."
Old Jul 16, 2016 | 12:37 PM
  #9  
patsmx5's Avatar
Thread Starter
Elite Member
iTrader: (16)
 
Joined: Aug 2007
Posts: 9,406
Total Cats: 559
From: Houston, TX
Default

Originally Posted by afm
It's amazing that that unsupported screw didn't get ingested. Was this shaft epoxied or JB welded at all?
Completely stock, never disassembled or modified.

It's is amazing that screw didn't go into the engine. Basically where it broke, the throttle shaft is wrapped about 55% around the screw and that was JUST enough to keep it holding on. Somehow. Second pic shows this well.
Old Jul 16, 2016 | 12:49 PM
  #10  
18psi's Avatar
VladiTuned
iTrader: (76)
 
Joined: Apr 2008
Posts: 35,821
Total Cats: 3,482
Default

haha wow, you got lucky
Old Jul 16, 2016 | 01:46 PM
  #11  
thumpetto007's Avatar
Elite Member
iTrader: (15)
 
Joined: Sep 2010
Posts: 2,041
Total Cats: -117
Default

Its a sign... keep doing weird setups and poppin wheelies
Old Jul 16, 2016 | 02:09 PM
  #12  
hornetball's Avatar
Elite Member
iTrader: (4)
 
Joined: Mar 2008
Posts: 6,301
Total Cats: 697
From: Granbury, TX
Default

Whoa! What's with Joe?
Old Jul 16, 2016 | 02:10 PM
  #13  
18psi's Avatar
VladiTuned
iTrader: (76)
 
Joined: Apr 2008
Posts: 35,821
Total Cats: 3,482
Default

For a sec I thought his account was hacked
Old Jul 16, 2016 | 02:11 PM
  #14  
aidandj's Avatar
SADFab Destructive Testing Engineer
iTrader: (5)
 
Joined: Apr 2014
Posts: 18,643
Total Cats: 1,870
From: Beaverton, USA
Default

Pure luck
Old Jul 16, 2016 | 02:16 PM
  #15  
patsmx5's Avatar
Thread Starter
Elite Member
iTrader: (16)
 
Joined: Aug 2007
Posts: 9,406
Total Cats: 559
From: Houston, TX
Default

Originally Posted by aidandj
Pure luck
No doubt. I know most people that have these fail destroy their engine over it. It's crazy, because the last motor I broke a stock piston in half with this cylinder head, and it somehow stayed together in the cylinder (despite litterally being in 2 pieces cracked in half) and did not damage the cylinder head at all, just scuffed up the walls and piston. Very lucky!

Looks like I'm going to be ordering several parts over the weekend. fuel pump, filter, throttle body, and probably more since bad things usually come in 3's, fuel pump, TB, what will be next?
Old Jul 16, 2016 | 08:54 PM
  #16  
thumpetto007's Avatar
Elite Member
iTrader: (15)
 
Joined: Sep 2010
Posts: 2,041
Total Cats: -117
Default

throw out bearing?

I've had bad luck with to/release bearings in almost every car I've owned. I once brushed the clutch fork in my subaru, and it popped the tob off. the day. before. a track weekend.
Old Jul 17, 2016 | 11:21 AM
  #17  
patsmx5's Avatar
Thread Starter
Elite Member
iTrader: (16)
 
Joined: Aug 2007
Posts: 9,406
Total Cats: 559
From: Houston, TX
Default

Originally Posted by thumpetto007
throw out bearing?

I've had bad luck with to/release bearings in almost every car I've owned. I once brushed the clutch fork in my subaru, and it popped the tob off. the day. before. a track weekend.
Nope, a/c compressor failed! LOL Almost the entire a/c system is new except the compressor, so I guess it was old enough. It lost a seal in the front. I might try to rebuild it as I've never rebuilt an a/c compressor, and they seem simple enough. I've had bad luck with TOBs wearing out fast, but never completely just failed.
Old Jul 17, 2016 | 12:24 PM
  #18  
codrus's Avatar
Elite Member
 
Joined: Mar 2007
Posts: 5,298
Total Cats: 884
From: Santa Clara, CA
Default

So are you going Skunk2, or another OEM one?

--Ian
Old Jul 17, 2016 | 12:26 PM
  #19  
patsmx5's Avatar
Thread Starter
Elite Member
iTrader: (16)
 
Joined: Aug 2007
Posts: 9,406
Total Cats: 559
From: Houston, TX
Default

Originally Posted by codrus
So are you going Skunk2, or another OEM one?

--Ian
Not sure, gotta look into it before I order one. I've seen post here where people have to disassemble and modify the skunk2 to fix a few problems with them. After doing that, are they bombproof? Or do they still break too?
Old Jul 17, 2016 | 12:36 PM
  #20  
viperormiata's Avatar
Elite Member
iTrader: (24)
 
Joined: Aug 2008
Posts: 6,110
Total Cats: 283
From: Key West
Default

Blew the welds on the intake.



All times are GMT -4. The time now is 09:43 PM.