EPIC nuts/studs loosening thread (reposting stupid stuff without reading = warning) - Page 2 - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Prefabbed Turbo Kits A place to discuss prefabricated turbo kits on the market
Sponsored by:
Sponsored by:

Reply
 
 
 
LinkBack Thread Tools
Old 06-07-2009, 09:42 PM   #21
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,851
Total Cats: 1,788
Default

my secret is fitting 11/16 studs in my m10 tapped manifold!
Braineack is offline   Reply With Quote
Old 06-07-2009, 09:48 PM   #22
Elite Member
iTrader: (15)
 
Join Date: Dec 2007
Location: San Antonio, Texas
Posts: 4,889
Total Cats: 28
Default

FWIW I did not see any evidence of loose studs on the T25 turbine inlet flange when I got back from MSR. Those nuts were tight, and there was no carbon blow-out visible anywhere at that joint. The 5-bolt flange at the turbine exit was also not leaking at the flange from what I could tell. I had a leak in that area, but it was unrelated to the studs/nuts. They were not super tight when I removed them, but still on there. When I unscrewed them, the studs came out of the turbo; the nuts were holding on to the studs securely.

This is all BEGI hardware, with the self-clinching nuts (oval-shaped), on a GT2871 running anywhere from 14-20 psi that day.
ZX-Tex is offline   Reply With Quote
Old 06-07-2009, 09:54 PM   #23
Senior Member
iTrader: (1)
 
Join Date: Jun 2006
Location: Outside of the Loop-ATL
Posts: 754
Total Cats: 0
Default

I really wondering something and it seems really stupid, but how many people have issues with studs backing out on bottom or even top mount manifolds? The reason I ask is that I can to the miata after owning an OEM turbo car(DSM) and never heard of anyone having nuts or bolts coming lose. Make me wonder, how many OEM turbo cars have side-mounted turbos version bottom. I can't think of any OEM car off the top of my head that has a side-mount turbo.
wildfire0310 is offline   Reply With Quote
Old 06-07-2009, 10:52 PM   #24
Senior Member
iTrader: (5)
 
Join Date: Jan 2008
Location: Central, TX / Bay area, CA
Posts: 1,272
Total Cats: 3
Default

I don't have an issue anymore, I use studs grade 12 and Audi nuts with a Greddy manifold.
Gotpsi? is offline   Reply With Quote
Old 06-07-2009, 10:56 PM   #25
Junior Member
 
Join Date: Mar 2008
Location: GJ, CO
Posts: 224
Total Cats: 0
Default

Standard FM 8mm hardware with track days, drag racing, canyon runs and auto-x days = never come loose.
GT3man2001 is offline   Reply With Quote
Old 06-07-2009, 11:40 PM   #26
Tour de Franzia
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,114
Total Cats: 351
Default

my begi nuts no longer grabbed after a track day, I can spin them off with my hands. I wonder if Savington and I are on the loud pedal a lot longer than most here.

I've never seen a vertically mounted turbo lose its hardware from Boost Logic, a custom made piece on Andrew Brilliant's eclipse, and apparently the BEGi S4 manifolds don't suffer from this either.
hustler is offline   Reply With Quote
Old 06-07-2009, 11:42 PM   #27
Elite Member
iTrader: (12)
 
Join Date: Aug 2006
Location: Central-ish VA
Posts: 4,449
Total Cats: 16
Default

Are any of the mentioned, cast manifolds?
neogenesis2004 is offline   Reply With Quote
Old 06-07-2009, 11:43 PM   #28
Tour de Franzia
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,114
Total Cats: 351
Default

Quote:
Originally Posted by neogenesis2004 View Post
Are any of the mentioned, cast manifolds?
no, all tubular. Matt's racecar sees tons of tracktime and doesn't have this issue. I've never seen a sidemount log manifold stay tight.
hustler is offline   Reply With Quote
Old 06-08-2009, 12:15 AM   #29
Junior Member
 
Join Date: Mar 2008
Location: GJ, CO
Posts: 224
Total Cats: 0
Default

Quote:
Originally Posted by neogenesis2004 View Post
Are any of the mentioned, cast manifolds?
FM cast mani here.
GT3man2001 is offline   Reply With Quote
Old 06-08-2009, 12:21 AM   #30
Elite Member
Thread Starter
 
Join Date: Jul 2005
Posts: 6,454
Total Cats: 80
Default

Do you or don't you have issues?
JasonC SBB is offline   Reply With Quote
Old 06-08-2009, 02:44 AM   #31
Senior Member
iTrader: (5)
 
Join Date: Jan 2008
Location: Central, TX / Bay area, CA
Posts: 1,272
Total Cats: 3
Default

Greddy cast/ no more problems, .
Gotpsi? is offline   Reply With Quote
Old 06-08-2009, 02:46 AM   #32
Senior Member
iTrader: (5)
 
Join Date: Jan 2008
Location: Central, TX / Bay area, CA
Posts: 1,272
Total Cats: 3
Default

I have the Greddy manifold and don't have issues anymore, Mostly track use, and I don't drive slow. sorry for the double post, don't know what happend?
Gotpsi? is offline   Reply With Quote
Old 06-08-2009, 03:31 AM   #33
Junior Member
 
Join Date: Mar 2008
Location: GJ, CO
Posts: 224
Total Cats: 0
Default

Quote:
Originally Posted by JasonC SBB View Post
Do you or don't you have issues?
Don't.
GT3man2001 is offline   Reply With Quote
Old 06-08-2009, 04:41 AM   #34
Supporting Vendor
iTrader: (31)
 
Savington's Avatar
 
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 14,362
Total Cats: 1,323
Default

Can you guys without problems tell us how fast you're going? Compare to SM lap times. The fast Cali track cars are going between 6 and 9 seconds faster than SMs at every track.
Savington is online now   Reply With Quote
Old 06-08-2009, 04:43 AM   #35
Senior Member
iTrader: (1)
 
Join Date: May 2008
Location: south texas
Posts: 1,419
Total Cats: 9
Default

only had the problem with 1 bolt. haven't had a problem in a long time now. i seriously doubt you and sav are ''on the gas longer'' or that it would matter. you trying to say your too fast for your nuts? lol

anyways, if that was the case, i've been to vir with really long straights (oak tree is a 2nd gear corner leads to loooong straight 140+ mph.) tws is a lot bigger and faster track than msr-c, and there is a track in the rio grand valley (actually cameron county airport) that the pca uses with a really long straight. might be 3/4 of a mile long! 135+ mph there too. so if being on the gas mattered, then i or my buddy's msm with the begi turbo upgrade would be having the same issue's but we don't.

not sure what your mani. looks like, but is there a way to double nut and tighten against each other? or what about a little metal tab that sits against one side of the nut/bolt to keep it from being able to turn? i saw something like that on a car before. anybody know what that's called? or i know someone mentioned it before, but what about a small tack weld? somewhere easy to get to if you needed to grind it off too remove the bolt later. i hate **** like this. the simplest problems can be the most frustrating. good luck
spoolin2bars is offline   Reply With Quote
Old 06-08-2009, 05:20 AM   #36
Elite AbsurdFlow Member
 
Laur3ns's Avatar
 
Join Date: Mar 2008
Location: Enschede, NL
Posts: 2,058
Total Cats: 11
Default

With all respect, I doubt Hustler is 'fast' in your book Sav. Nor am I and I am on my third set of studs-n-nuts.

I think it could be down to:
a) fastening procedure, retightening after the first 2-5 heat cycles?
b) heat shielding/temperature differences between cars?
c) resonation of down pipe, engine block and other peripherals?
Laur3ns is offline   Reply With Quote
Old 06-08-2009, 08:49 AM   #37
Tour de Franzia
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,114
Total Cats: 351
Default

Instead of talking **** about people you've never met in your life, shouldn't you be ***** deep in a tranny hooker in the redlight in wooden shoes?
hustler is offline   Reply With Quote
Old 06-08-2009, 09:23 AM   #38
Elite AbsurdFlow Member
 
Laur3ns's Avatar
 
Join Date: Mar 2008
Location: Enschede, NL
Posts: 2,058
Total Cats: 11
Default

Quote:
Originally Posted by hustler View Post
Instead of talking **** about people you've never met in your life, shouldn't you be ***** deep in a tranny hooker in the redlight in wooden shoes?
No. I don't think there is anything elite in shearing studs, as Savington thinks - nor is boning some underpaid skinny *** fake blonde bitch from eastern europe. Both suck *****.
Laur3ns is offline   Reply With Quote
Old 06-08-2009, 11:26 AM   #39
Senior Member
iTrader: (5)
 
Join Date: Jan 2008
Location: Central, TX / Bay area, CA
Posts: 1,272
Total Cats: 3
Default

Now that I think of it the only thing I did differently in the set up Im running now with no problems is CAT high temp anti-seize the can says that its stable at 1800F, but that should make it easier for them to come loose not harder.
Gotpsi? is offline   Reply With Quote
Old 06-08-2009, 12:13 PM   #40
Elite Member
Thread Starter
 
Join Date: Jul 2005
Posts: 6,454
Total Cats: 80
Default

Does it seem that the FM provided studs and nuts don't have the problem and BEGI's do?

Enter your info into the survey here:
https://www.miataturbo.net/forum/t35901/

I don't believe the "longer on the loud pedal, faster driver" theory. A setup with 2* less timing and slower driver would have higher EGTs, and a slower driver on a track with a longer straight would stand on the gas longer than Sav.
JasonC SBB 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 57 07-19-2017 05:11 PM
OTS Bilstein to motorsports ASN conversion stoves Suspension, Brakes, Drivetrain 5 04-21-2016 04:00 PM
WTB MP62 (Hotside) (NB2) Rick02R WTB 3 01-03-2016 08:18 PM
Leaky Wilwoods mx592 Suspension, Brakes, Drivetrain 1 10-01-2015 01:45 AM


Thread Tools

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 11:20 AM.