I've seen some studs that have a triangular skew to them, perhaps that is how?
Wallyman
"Ralph Alder"
<[email protected]>
Sent by: To
miatapower-boun...@miat "'Bob Bundy'"
apower.net <[email protected]>,
<[email protected]>
cc
05/05/2009 12:56 AM
Subject
RE: loosening turbo to mani
and turbo to d/p nuts
I, for one, have seen these posted here, and I have the same question then
as now: just how do self-locking threads work? It isn’t obvious from the
catalog page drawing. Are the threads cut fore instance, instead of say 24
tpi do they have 23.5tpi and just jamb fit in the hole or is there a much
more clever method?
Ralph Alder
Curious In Orange Co.
From: [email protected]
[mailto:[email protected]] On Behalf Of Bob Bundy
Sent: Wednesday, April 01, 2009 11:05 PM
To: [email protected]
Subject: Re: loosening turbo to mani and turbo to d/p nuts
Anybody use these studs? They have self locking threads on one end. I plan
to use 10mm self locking thread studs and the wedge lock washers when I put
things back together.
http://www.mcmaster.com/#self-locking-threaded-studs/=19k229
Driven on the street I never have a problem. lots of track duty and
everything goes wrong.
Bob
----- Original Message -----
From: Bill Cardell
To: Emilio - 949Racing ; MiataPower
Sent: Wednesday, April 01, 2009 10:04 PM
Subject: RE: loosening turbo to mani and turbo to d/p nuts
We have had studs come out, mainly on track driven cars. I'd have to
disagree about the stage 8s, though. They also address the stud coming
out.
TurboDog's Dad
Bill Cardell
www.flyinmiata.com
1-800-FLY-MX5S
970-464-5600 tech support
Don't miss our Summer Camp! August 6-9
From: [email protected]
[mailto:[email protected]] On Behalf Of Emilio - 949Racing
Sent: Wednesday, April 01, 2009 9:40 PM
To: MiataPower
Subject: Re: loosening turbo to mani and turbo to d/p nuts
My experience has been that its more the studs backing out. So even, stage
8's, Nordlocks, safety wire and what not doesn't always fix it. Someone at
MRLS mentioned that FM may be switching to or optionally offering 10mm
studs with their kits. The extra surface area does seem to make them stay
put longer. 10m studs have been de rigueur for turbo Miatas that see a lot
of track use but its trickling down to street cars slower it seems. I
haven't tried green, hi temp cylindrical bonding Loctite but that might
help. Another fix might be staking them, but that may raise cracking
issues with cast manifolds.
Jason, you don't track your car do you? That's when stuff falls off :)
I've seen daily driven turbo cars that have never had an an issue on the
street, not make one session at the track before a stud or two backs out.
But to answer your question yes, it's endemic for turbo track miatas.
Emilio Cervantes
www.949Racing.com
26242 Dimension Dr #130
Lake Forest, CA 92630
949.716.3111 phone / fax
On 2009-04-02 03:05, Jason C wrote:
> A lot of people seem to have this problem (though not me)....I
want to understand why some do and some don't. Â Some do despite
the fancy serrated FM washers.Do FM see this problem?
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