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Re: [Fot] Broken Diffs

To: keithfiles@btinternet.com
Subject: Re: [Fot] Broken Diffs
From: John Styduhar via Fot <fot@autox.team.net>
Date: Wed, 21 Nov 2018 15:37:14 -0500
Cc: Triumph 'Friends of Triumph <fot@autox.team.net>
Delivered-to: mharc@autox.team.net
Delivered-to: fot@autox.team.net
References: <1704375447.3826399.1542757789135.ref@mail.yahoo.com> <1704375447.3826399.1542757789135@mail.yahoo.com> <1641275199.4636889.1542811236602@mail.yahoo.com> <A75FF32C-DC76-481E-80E5-F6AD0DBA827F@btinternet.com>
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>From what I've read, Gripper, Salisbury and Trans-X are all plate-type LSD
units with generally the same operating principles using heat-generating
friction plates and adjustable ramp engagement which need to be tuned to
the vehicle and performance.


On Wed, Nov 21, 2018 at 12:11 PM Keith Files via Fot <fot@autox.team.net>
wrote:

> Hi Bob,
>
> i am pretty sure that Tran X is the same as a Salisbury LSD and is still
> available through TR Enterprises here in the UK.
>
> I do not know what car you are using (TR4 i think) so a new Tran X is
> probably ok. I have 2 Salisbury LSD units in 2 axles for my TR4.
>
> However, if you are running a TR6 then I would recommend a Gripper LSD as
> they can handle the extra power and need a lot less maintenance than the
> Salisbury (I swapped out and sold both my Salisbury LSDs for 2 new Grippers
> for my TR6).
>
> www.gripperlsd.com
>
> Of interest my TR4 produces 194 bhp at the flywheel and my TR6 produces
> 252 bhp at the flywheel.
>
> Hope that helps,
>
> Keith
>
>
>
> On 21 Nov 2018, at 14:40, Jack Wheeler via Fot <fot@autox.team.net> wrote:
>
> Should be a lot of used carriers around?
>
> On Tuesday, November 20, 2018, 11:34:42 PM EST, Robert Lang via Fot <
> fot@autox.team.net> wrote:
>
>
> Hi,
>
> I broke a diff at Thompson back in October and I finally did a
> post-mortem. Looks like a couple of bolts backed out and when the shit hit
> the fan, the 4 or 5 that were still holding on sheared off. In any case,
> lots of metal bits in there. Some of the big pieces bounced around in the
> diff and there's some gouges in the Tran-X center section. The question to
> the group is - assuming that I find no cracks in the center section, it it
> accepted practice to clean off the dings to prevent stress risers and
> re-use it or is this a "tosser".
>
> Speaking of Tran-X, does anyone sell those now or are we limited to Quaife
> and GKN? I see that Rimmer lists both of those units. To be honest, I'm not
> a fan of Quaife because I have to run the rear a lot softer to prevent
> wheel spin in the tight stuff - that kills my times at places like Thompson
> and Palmer (like 1.5 to 2 seconds a lap.) Speaking of GKN, I know nothing
> about them other than "clutch type differential". Feel free to chime in if
> you have experience with those units.
>
> Also, I am nearly 100% certain that I was using new lock washers and Red
> Loctite high strength thread compound, so the bolts backing out was a total
> surprise when I cracked the case open. I was assuming that the pinion head
> had sheared off based on how the car felt when the diff broke. It was BANG
> and done - box full of neutrals.
>
> Off topic - looks like I'm not driving at ButtonWillow, I got a reply from
> Joe Siam that he has nothing available for that date. Oh well. Look like my
> budget is going to gears and stuff anyway... ;-)
>
> c ya,
> Bob Lang
> _______________________________________________
> fot@autox.team.net
>
> http://www.fot-racing.com
>
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>
>
> _______________________________________________
> fot@autox.team.net
>
> http://www.fot-racing.com
>
> Donate: http://www.team.net/donate.html
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>
>
> _______________________________________________
> fot@autox.team.net
>
> http://www.fot-racing.com
>
> Donate: http://www.team.net/donate.html
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>
>
>

--000000000000d70541057b32b790
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"font-size:small">Fro=
m what I&#39;ve read, Gripper, Salisbury and Trans-X are all plate-type LSD=
 units with generally the same operating principles using heat-generating f=
riction plates and adjustable ramp engagement which need to be tuned to the=
 vehicle and performance.=C2=A0 =C2=A0 =C2=A0</div><div class=3D"gmail_defa=
ult" style=3D"font-size:small"><br></div></div><br><div class=3D"gmail_quot=
e"><div dir=3D"ltr">On Wed, Nov 21, 2018 at 12:11 PM Keith Files via Fot &l=
t;<a href=3D"mailto:fot@autox.team.net";>fot@autox.team.net</a>&gt; wrote:<b=
r></div><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border=
-left:1px #ccc solid;padding-left:1ex"><div style=3D"word-wrap:break-word;l=
ine-break:after-white-space">Hi Bob,<div><br></div><div>i am pretty sure th=
at Tran X is the same as a Salisbury LSD and is still available through TR =
Enterprises here in the UK.</div><div><br></div><div>I do not know what car=
 you are using (TR4 i think) so a new Tran X is probably ok. I have 2 Salis=
bury LSD units in 2 axles for my TR4.</div><div><br></div><div>However, if =
you are running a TR6 then I would recommend a Gripper LSD as they can hand=
le the extra power and need a lot less maintenance than the Salisbury (I sw=
apped out and sold both my Salisbury LSDs for 2 new Grippers for my TR6).</=
div><div><br></div><div><a href=3D"http://www.gripperlsd.com"; target=3D"_bl=
ank">www.gripperlsd.com</a></div><div><br></div><div>Of interest my TR4 pro=
duces 194 bhp at the flywheel and my TR6 produces 252 bhp at the flywheel.<=
/div><div><br></div><div>Hope that helps,</div><div><br></div><div>Keith</d=
iv><div><br></div><div>=C2=A0<br><div><br><blockquote type=3D"cite"><div>On=
 21 Nov 2018, at 14:40, Jack Wheeler via Fot &lt;<a href=3D"mailto:fot@auto=
x.team.net" target=3D"_blank">fot@autox.team.net</a>&gt; wrote:</div><br cl=
ass=3D"m_-7294472673066812857Apple-interchange-newline"><div><div><div clas=
s=3D"m_-7294472673066812857ydpc7dbbde5yahoo-style-wrap" style=3D"font-famil=
y:Helvetica Neue,Helvetica,Arial,sans-serif;font-size:13px"><div></div>
        <div>Should be a lot of used carriers around?<br></div><div><br></d=
iv>
       =20
        </div><div id=3D"m_-7294472673066812857ydpb94af08dyahoo_quoted_3319=
891977" class=3D"m_-7294472673066812857ydpb94af08dyahoo_quoted">
            <div style=3D"font-family:&#39;Helvetica Neue&#39;,Helvetica,Ar=
ial,sans-serif;font-size:13px;color:#26282a">
               =20
                <div>
                    On Tuesday, November 20, 2018, 11:34:42 PM EST, Robert =
Lang via Fot &lt;<a href=3D"mailto:fot@autox.team.net"; target=3D"_blank">fo=
t@autox.team.net</a>&gt; wrote:
                </div>
                <div><br></div>
                <div><br></div>
                <div><div id=3D"m_-7294472673066812857ydpb94af08dyiv8313936=
560"><div><div class=3D"m_-7294472673066812857ydpb94af08dyiv8313936560ydp24=
3c3563yahoo-style-wrap" style=3D"font-family:Helvetica Neue,Helvetica,Arial=
,sans-serif;font-size:13px">Hi,</div><div class=3D"m_-7294472673066812857yd=
pb94af08dyiv8313936560ydp243c3563yahoo-style-wrap" style=3D"font-family:Hel=
vetica Neue,Helvetica,Arial,sans-serif;font-size:13px"><br></div><div class=
=3D"m_-7294472673066812857ydpb94af08dyiv8313936560ydp243c3563yahoo-style-wr=
ap" style=3D"font-family:Helvetica Neue,Helvetica,Arial,sans-serif;font-siz=
e:13px">I broke a diff at Thompson back in October and I finally did a post=
-mortem. Looks like a couple of bolts backed out and when the shit hit the =
fan, the 4 or 5 that were still holding on sheared off. In any case, lots o=
f metal bits in there. Some of the big pieces bounced around in the diff an=
d there&#39;s some gouges in the Tran-X center section. The question to the=
 group is - assuming that I find no cracks in the center section, it it acc=
epted practice to clean off the dings to prevent stress risers and re-use i=
t or is this a &quot;tosser&quot;.</div><div class=3D"m_-729447267306681285=
7ydpb94af08dyiv8313936560ydp243c3563yahoo-style-wrap" style=3D"font-family:=
Helvetica Neue,Helvetica,Arial,sans-serif;font-size:13px"><br></div><div cl=
ass=3D"m_-7294472673066812857ydpb94af08dyiv8313936560ydp243c3563yahoo-style=
-wrap" style=3D"font-family:Helvetica Neue,Helvetica,Arial,sans-serif;font-=
size:13px">Speaking of Tran-X, does anyone sell those now or are we limited=
 to Quaife and GKN? I see that Rimmer lists both of those units. To be hone=
st, I&#39;m not a fan of Quaife because I have to run the rear a lot softer=
 to prevent wheel spin in the tight stuff - that kills my times at places l=
ike Thompson and Palmer (like 1.5 to 2 seconds a lap.) Speaking of GKN, I k=
now nothing about them other than &quot;clutch type differential&quot;. Fee=
l free to chime in if you have experience with those units.<br></div><div c=
lass=3D"m_-7294472673066812857ydpb94af08dyiv8313936560ydp243c3563yahoo-styl=
e-wrap" style=3D"font-family:Helvetica Neue,Helvetica,Arial,sans-serif;font=
-size:13px"><br></div><div class=3D"m_-7294472673066812857ydpb94af08dyiv831=
3936560ydp243c3563yahoo-style-wrap" style=3D"font-family:Helvetica Neue,Hel=
vetica,Arial,sans-serif;font-size:13px">Also, I am nearly 100% certain that=
 I was using new lock washers and Red Loctite high strength thread compound=
, so the bolts backing out was a total surprise when I cracked the case ope=
n. I was assuming that the pinion head had sheared off based on how the car=
 felt when the diff broke. It was BANG and done - box full of neutrals.</di=
v><div class=3D"m_-7294472673066812857ydpb94af08dyiv8313936560ydp243c3563ya=
hoo-style-wrap" style=3D"font-family:Helvetica Neue,Helvetica,Arial,sans-se=
rif;font-size:13px"><br></div><div class=3D"m_-7294472673066812857ydpb94af0=
8dyiv8313936560ydp243c3563yahoo-style-wrap" style=3D"font-family:Helvetica =
Neue,Helvetica,Arial,sans-serif;font-size:13px">Off topic - looks like I&#3=
9;m not driving at ButtonWillow, I got a reply from Joe Siam that he has no=
thing available for that date. Oh well. Look like my budget is going to gea=
rs and stuff anyway... ;-)</div><div class=3D"m_-7294472673066812857ydpb94a=
f08dyiv8313936560ydp243c3563yahoo-style-wrap" style=3D"font-family:Helvetic=
a Neue,Helvetica,Arial,sans-serif;font-size:13px"><br></div><div class=3D"m=
_-7294472673066812857ydpb94af08dyiv8313936560ydp243c3563yahoo-style-wrap" s=
tyle=3D"font-family:Helvetica Neue,Helvetica,Arial,sans-serif;font-size:13p=
x">c ya,</div><div class=3D"m_-7294472673066812857ydpb94af08dyiv8313936560y=
dp243c3563yahoo-style-wrap" style=3D"font-family:Helvetica Neue,Helvetica,A=
rial,sans-serif;font-size:13px">Bob Lang<br></div></div></div>_____________=
__________________________________<br><a href=3D"mailto:fot@autox.team.net"=
 rel=3D"nofollow" target=3D"_blank">fot@autox.team.net</a><br><br><a href=
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            </div>
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/div></blockquote></div><br></div></div>___________________________________=
____________<br>
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</blockquote></div>

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