Leave it to me to f*ck something good up... - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Race Prep Miata race-only chat.
Sponsored by:
Sponsored by:

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 03-12-2012, 09:40 AM   #1
Elite Member
Thread Starter
iTrader: (12)
 
GeneSplicer's Avatar
 
Join Date: Sep 2009
Location: Birmingham, AL
Posts: 2,006
Total Cats: 147
Default Leave it to me to f*ck something good up...

Man - craziness at Road Atlanta this weekend. So how many of you where hoping to see a mangled miata in flames? Sorry to dissappoint - so far!

1st off, the low mileage 6spd I bought and installed failed to shift into 5th - period. So that was a rough start - I'm at that point where I 'feel' I need to double/triple check everything now less anything bad happens - which it did.

So here I was cruising down the back straight at RA at about 120 when I heard a pop - saw no smoke. I got into the brake zone and suddenly smelled diff fluid so I stayed off line and pitted in, but nothing was feeling different with the car, all felt normal other than hearing the pop - which really wasn't any louder than picking up a large marble and slinging it into the well. So I pulled into paddock, parked and looked under the at the diff and sure enough, fluid seemed to be dripping out the left seal. So I yanked the diff and low and behold - holy **** - I just destroyed my OSG and 3.6 R&P!! F*CK!!!




The ASE mech I used to install the R&P and set the lash forgot to do something very important - seems he didn't torque or threadlock one of the bolts holding a lash retaining clip. I used this guy the 1st time when I put in the OSG with no problems, so didn't have any reason for not guessing his work this time.




Honestly, I dodged a hell of a bullet. The bolt did not mangle the R&P, in fact you couldn't see ANY damage to the R&P at all, nor on the OSG - so thankful for soft bolts. Of all the possibilies that could have happened - destroying a $2G diff and spinning out at 120 being the worst, I was the luckiest SOB at the track this weekend.

So, fix in effect - right across the paddock was a race shop, threw the shop guy $40 and he tigged up that hole in fine fashion. Threw the unit back together (after cleaning it well) and called Emilio for his expert advice on what fluid would work without effing up the clutch plates (since I didn't have that special OSG gear oil). Discovery Parts happened to have RedLine GL5 85-250 Shockproof gear oil - that pink looking stuff. Big thanks for the info Emilio!!





So this all happened on friday - ran saturday flawlessly, without 5th of course, which I really needed - that's like my 4th in a 5spd.

Then this poor soul had a date with the tirewall/concrete barrier out of T3...





And then the second to last run of the day I noticed drastic boost drop - and as I know of, I'm the 1st and only one to expeirence TSE Inconel stud failure...



The only thing I can think of is that the resbond did not hold the stud in, so 3, yes, 3 of the studs backed out through the locking fasteners. 2 of them are gone, somewhere on track, the 3rd was kept from falling out by the DP flange. So, I may yank the manifold off and send to Andrew for measurements and see if it was a failure of the resbond, mounting depth of the studs, or wall clearance between the stud and the threaded manifold - all? At this point, I need to get the 1.8 complete and beg/plead for my vband.
Attached Thumbnails
Leave it to me to f*ck something good up...-img_20120309_122315.jpg   Leave it to me to f*ck something good up...-img_20120309_122324.jpg   Leave it to me to f*ck something good up...-img_20120309_123620.jpg   Leave it to me to f*ck something good up...-img_20120309_123628.jpg   Leave it to me to f*ck something good up...-img_20120309_140320.jpg  

Leave it to me to f*ck something good up...-img_20120309_140331.jpg   Leave it to me to f*ck something good up...-img_20120311_105914.jpg   Leave it to me to f*ck something good up...-img_20120311_105901.jpg   Leave it to me to f*ck something good up...-img_20120311_152433.jpg  

Last edited by GeneSplicer; 03-12-2012 at 10:39 AM.
GeneSplicer is offline   Reply With Quote
Old 03-12-2012, 10:05 AM   #2
Tour de Franzia
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,114
Total Cats: 351
Default

Damn, that sucks. Maybe it's time to use roll-pints in the manifold/stud.
hustler is offline   Reply With Quote
Old 03-12-2012, 10:26 AM   #3
Elite Member
Thread Starter
iTrader: (12)
 
GeneSplicer's Avatar
 
Join Date: Sep 2009
Location: Birmingham, AL
Posts: 2,006
Total Cats: 147
Default

Quote:
Originally Posted by hustler View Post
Damn, that sucks. Maybe it's time to use roll-pints in the manifold/stud.
I thought that same exact thing. I'm wondering if there was too much clearance between the stud and the M10 threaded manifold Abe made. They weren't tight to thread in... I coated the stud end with resbond and double nutted to tighten it in. But yeah, roll pins sounding like a good idea right now.

At what EGT temps will resbond deteriorate? Met a miata guy who's an engineer with BW, and he was really insterested in my EGTs - he thinking my effiecency flow map is way out of spec with the motor.
GeneSplicer is offline   Reply With Quote
Old 03-12-2012, 11:47 AM   #4
Elite Member
iTrader: (5)
 
Join Date: Dec 2010
Location: Raleigh, NC
Posts: 1,970
Total Cats: 49
Default

Wow Bryan, ---- was not good for you this weekend. Hope you get things worked out.
Seefo is offline   Reply With Quote
Old 03-12-2012, 11:50 AM   #5
y8s
2 Props,3 Dildos,& 1 Cat
iTrader: (8)
 
y8s's Avatar
 
Join Date: Jun 2005
Location: Fake Virginia
Posts: 19,038
Total Cats: 407
Default

WOOO that's not lucky. Other than a partial lap on questionable backlash, everything looks fine? Do you know if the bearing adjusters spun at all?
y8s is offline   Reply With Quote
Old 03-12-2012, 12:04 PM   #6
mkturbo.com
iTrader: (24)
 
shuiend's Avatar
 
Join Date: May 2006
Location: Charleston SC
Posts: 13,778
Total Cats: 1,106
Default

What were your lap times compared to spec miata times?
shuiend is offline   Reply With Quote
Old 03-12-2012, 12:17 PM   #7
Elite Member
Thread Starter
iTrader: (12)
 
GeneSplicer's Avatar
 
Join Date: Sep 2009
Location: Birmingham, AL
Posts: 2,006
Total Cats: 147
Default

Quote:
Originally Posted by y8s View Post
WOOO that's not lucky. Other than a partial lap on questionable backlash, everything looks fine? Do you know if the bearing adjusters spun at all?
Correct, 'playing' with the lash seemed to be very tight yet. Seems I caught it VERY early on, but will remove the diff for inspection and re-setting of lash. I did use threadlocker and re-set the retainers. It felt great saturday and sun morn without anything to cause me concern.

Lars - I was probably turning 1:41s but don't yet have a lap timer - even without having 5th gear. Other than that, still beat up on some vettes and mustangs - gt3s in the corners...

Lots of miss-shifting getting used to the trans
GeneSplicer is offline   Reply With Quote
Old 03-12-2012, 02:03 PM   #8
Elite Member
iTrader: (3)
 
Join Date: Mar 2008
Location: Granbury, TX
Posts: 6,010
Total Cats: 583
Default

That which doesn't kill us . . . . Could've been a lot worse.

Somebody really needs to figure out how to use drilled, inconel bolts that can be safety wired instead of using studs that back out. Yes, I know there are clearance issues. Sigh.
hornetball is offline   Reply With Quote
Old 03-12-2012, 02:27 PM   #9
Senior Member
iTrader: (6)
 
Join Date: Aug 2009
Location: Charlotte, NC
Posts: 924
Total Cats: 16
Default

Wow Bryan! thats absolutely nuts! Good job on dodging those nasty bullets this weekend. Were those inconel bolts not safety wired?
Gryff is offline   Reply With Quote
Old 03-12-2012, 02:35 PM   #10
Elite Member
iTrader: (3)
 
Join Date: Mar 2008
Location: Granbury, TX
Posts: 6,010
Total Cats: 583
Default

Quote:
Originally Posted by Gryff View Post
Were those inconel bolts not safety wired?
It was a resbonded stud with a nut.
hornetball is offline   Reply With Quote
Old 03-12-2012, 04:25 PM   #11
Supporting Vendor
iTrader: (31)
 
Savington's Avatar
 
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 14,367
Total Cats: 1,331
Default

I'm not interested in further debate on the merits of bolts vs. studs.

Bryan, were the studs loose in the threads before you torqued them into the manifold?
Savington is offline   Reply With Quote
Old 03-12-2012, 05:43 PM   #12
Elite Member
Thread Starter
iTrader: (12)
 
GeneSplicer's Avatar
 
Join Date: Sep 2009
Location: Birmingham, AL
Posts: 2,006
Total Cats: 147
Default

I want to say there was there was some play, which would be the cause - this is why I debated sending you the manifold for inspection. I do not think it was a failure of the studs or locking hardware themselves, i think the tolerance between the studs and manifold was too great for the resbond to hold. I'll be ordering another set - I might have to get Abe involved if the stud holes are to large.

Last edited by GeneSplicer; 03-12-2012 at 08:22 PM.
GeneSplicer is offline   Reply With Quote
Old 03-12-2012, 07:50 PM   #13
Elite Member
iTrader: (2)
 
Mobius's Avatar
 
Join Date: May 2008
Location: Portland, Oregon
Posts: 3,178
Total Cats: 267
Default

Wow. Amazing your diff had no damage other than the puncture to the housing.
Mobius is offline   Reply With Quote
Old 03-12-2012, 10:01 PM   #14
Elite Member
iTrader: (11)
 
Join Date: Feb 2009
Posts: 2,982
Total Cats: 10
Default

I'm impressed that you were able to do all of that work/repair at the track. Your 5th gear issue is the same thing that happened to me with my first six speed. I had to get it replaced.
miatauser884 is offline   Reply With Quote
Old 03-13-2012, 12:16 AM   #15
Senior Member
iTrader: (6)
 
Join Date: Jun 2010
Location: San Rafael, CA
Posts: 1,125
Total Cats: 41
Default

What a rough day. Great test of endurance and patience.
k24madness is offline   Reply With Quote
Old 03-13-2012, 09:48 AM   #16
Elite Member
iTrader: (12)
 
Join Date: Sep 2007
Location: Charlotte, NC
Posts: 6,868
Total Cats: 66
Default

I can't believe you came to RA and didn't call me. Would have come out for beers.
See if I bother calling you when in town for the Honda 250 in a few weeks to see if you want to meet up for food and drinks :(
Doppelgänger is offline   Reply With Quote
Old 03-13-2012, 10:04 AM   #17
Elite Member
iTrader: (21)
 
Join Date: Jun 2007
Location: Rochester, NY
Posts: 5,687
Total Cats: 560
Default

I fail to see how any of this would be your screw up. More like s--- happens. Maybe the diff was the installer's fault, but you can't be expected to inspect every last detail.

Looks like the welder did a nice job of it, though.
rleete is offline   Reply With Quote
Old 03-13-2012, 04:28 PM   #18
Elite Member
Thread Starter
iTrader: (12)
 
GeneSplicer's Avatar
 
Join Date: Sep 2009
Location: Birmingham, AL
Posts: 2,006
Total Cats: 147
Default

Yeah, **** cetainly happened... but it could have been MUCH worse

Quote:
Originally Posted by Doppelgänger View Post
I can't believe you came to RA and didn't call me. Would have come out for beers.
See if I bother calling you when in town for the Honda 250 in a few weeks to see if you want to meet up for food and drinks :(
Awwweee.... you butt hurt? Hehe Beers on me when you come on in we got the Mitty too...
btw, Melissa was canned from Jeffery's - dunno why but I miss seeing that *** of hers!
GeneSplicer is offline   Reply With Quote
Old 03-13-2012, 05:21 PM   #19
Junior Member
 
Join Date: Oct 2010
Location: Wake Forest, NC
Posts: 175
Total Cats: 0
Default

Backstory on the silver Miata?
cucamelsmd15 is offline   Reply With Quote
Old 03-14-2012, 01:04 AM   #20
Elite Member
Thread Starter
iTrader: (12)
 
GeneSplicer's Avatar
 
Join Date: Sep 2009
Location: Birmingham, AL
Posts: 2,006
Total Cats: 147
Default

The guy is from Huntsville and lost it in T3/T4 area - snap oversteer put him into the wall
GeneSplicer is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Project Gemini - Turbo Civic on the Cheap Full_Tilt_Boogie Build Threads 59 Yesterday 09:00 PM
WTB MP62 (Hotside) (NB2) Rick02R WTB 3 01-03-2016 08:18 PM
Bad head gasket or ? shooterschmidty Engine Performance 8 09-30-2015 11:28 PM
Another Alternator thread ihiryu General Miata Chat 9 09-28-2015 11:22 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 07:32 AM.