Re: [Healeys] Top Trunnion Kit

[john harper <ah100tech@gmail.com>]

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Fred

In the original arrangement, the washers must be assembled so that the
maximum lift of the swivel axle on the kingpin is 0.002 in, adjusting the
clearance by using various thicknesses of Staybrite and plain washers.

I believe that the torque setting for the nut is 55 ft/lb.

Fitting the bearing, tightening the top nut and then slackening it off may
not give the right or safe result.

However, I have seen versions where the kingpin is drilled through in two
places with a split pin fitted through a castellated nut. The nut must be
tightened down fully, then backed off to allow the split pin to go through.

Maybe just a small amount of slackening will not lose sufficient torque to
cause a problem

All the best.

On Fri, 10 Apr 2026 at 15:19, Fred Wescoe <fredwescoe@gmail.com> wrote:

> John,
>
> What should the clearance be and how do you measure it?   Also what is th=
e
> torque setting for the nut?
>
> Thanks.
>
> Fred
> 65 BJ8
>
> On Fri, Apr 10, 2026 at 9:36=E2=80=AFAM Stephen Hutchings <s.hutchings@ro=
gers.com>
> wrote:
>
>> I=E2=80=99ve had the AH spares trunnion bearings in for about ten years.=
 It=E2=80=99s
>> been a while, but my memory is that I had to add a shim to get the
>> tolerance right.
>> It=E2=80=99s not a dramatic difference, but it=E2=80=99s noticeable.
>>
>> Stephen, BJ8
>> Sent from my iPad
>>
>> On Apr 10, 2026, at 7:32=E2=80=AFAM, john harper <ah100tech@gmail.com> w=
rote:
>>
>> =EF=BB=BF
>> Simon
>>
>> I fitted these some time ago; it seemed to make the steering a little
>> lighter.
>>
>> The drawback was that on the original setup, the lift could be adjusted
>> by choosing the correct spacer washer. To make this match the
>> recommendation, I had to file down the top of the swivel axle.
>>
>> The 'official' recommendation for lift is two thou with the top nut
>> tight. I would not recommend leaving the top nut loose so as to get the =
two
>> thou lift
>>
>> There needs to be a better way of adjusting the swivel axle lift
>>
>> All the best.
>>
>> On Fri, 10 Apr 2026 at 05:04, Simon Lachlan via Healeys <
>> healeys@autox.team.net> wrote:
>>
>>> I=E2=80=99m tempted by an email from AH Spares touting their roller bea=
ring kit
>>> for the front suspension=E2=80=99s top trunnion. (AH3000 MkII BT7). For=
 the
>>> magical results described, it seems reasonably priced=E2=80=A6.
>>>
>>> Have any of you tried this conversion?
>>>
>>> Was it as easy as they suggest?
>>>
>>> And, looking at AH4Healeys, it seems they=E2=80=99ve got their own vers=
ion=E2=80=A6.has
>>> anyone tried that?
>>>
>>> And is one kit known to be better than the other?
>>>
>>> Thanks,
>>>
>>> Simon
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<div dir=3D"ltr">Fred<div><br></div><div><div class=3D"gmail-text" style=3D=
"line-height:1.3;color:rgb(0,0,0);font-size:14px">In the original arrangeme=
nt, the washers must be assembled so that the maximum lift of the swivel ax=
le on the kingpin is 0.002 in, adjusting the clearance by using various thi=
cknesses of Staybrite and plain washers.</div><div class=3D"gmail-text" sty=
le=3D"line-height:1.3;color:rgb(0,0,0);font-size:14px"><br></div><div class=
=3D"gmail-text" style=3D"line-height:1.3;color:rgb(0,0,0);font-size:14px">I=
 believe that the torque setting for the nut is 55 ft/lb.</div><div class=
=3D"gmail-text" style=3D"line-height:1.3;color:rgb(0,0,0);font-size:14px"><=
br></div><div class=3D"gmail-text" style=3D"line-height:1.3;color:rgb(0,0,0=
);font-size:14px">Fitting the bearing, tightening the top nut and then slac=
kening it off may not give the right or safe result.=C2=A0</div></div><div =
class=3D"gmail-text" style=3D"line-height:1.3;color:rgb(0,0,0);font-size:14=
px"><br></div><div class=3D"gmail-text" style=3D"line-height:1.3;color:rgb(=
0,0,0);font-size:14px">However, I have seen versions where the kingpin is d=
rilled through in two places with a split pin fitted through a castellated =
nut. The nut must be tightened down fully, then backed off to allow the spl=
it pin to go through.</div><div class=3D"gmail-text" style=3D"line-height:1=
.3;color:rgb(0,0,0);font-size:14px"><br></div><div class=3D"gmail-text" sty=
le=3D"line-height:1.3;color:rgb(0,0,0);font-size:14px">Maybe just a small a=
mount of slackening will not=C2=A0lose sufficient torque=C2=A0to cause a pr=
oblem=C2=A0</div><div class=3D"gmail-text" style=3D"line-height:1.3;color:r=
gb(0,0,0);font-size:14px"><br></div><div class=3D"gmail-text" style=3D"line=
-height:1.3;color:rgb(0,0,0);font-size:14px">All the best.=C2=A0</div></div=
><br><div class=3D"gmail_quote gmail_quote_container"><div dir=3D"ltr" clas=
s=3D"gmail_attr">On Fri, 10 Apr 2026 at 15:19, Fred Wescoe &lt;<a href=3D"m=
ailto:fredwescoe@gmail.com">fredwescoe@gmail.com</a>&gt; wrote:<br></div><b=
lockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-le=
ft:1px solid rgb(204,204,204);padding-left:1ex"><div dir=3D"ltr">John,<div>=
<br></div><div>What should the clearance be and how do you measure it?=C2=
=A0 =C2=A0Also what is the torque setting for the nut?</div><div><br></div>=
<div>Thanks.</div><div><br></div><div>Fred</div><div>65 BJ8</div></div><br>=
<div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Fri, Ap=
r 10, 2026 at 9:36=E2=80=AFAM Stephen Hutchings &lt;<a href=3D"mailto:s.hut=
chings@rogers.com" target=3D"_blank">s.hutchings@rogers.com</a>&gt; wrote:<=
br></div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8e=
x;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir=3D"auto=
">I=E2=80=99ve had the AH spares trunnion bearings in for about ten years. =
It=E2=80=99s been a while, but my memory is that I had to add a shim to get=
 the tolerance right.<div>It=E2=80=99s not a dramatic difference, but it=E2=
=80=99s noticeable.</div><div><br></div><div>Stephen, BJ8<br id=3D"m_-19779=
78150433084637m_-5057468141603282193lineBreakAtBeginningOfSignature"><div d=
ir=3D"ltr">Sent from my iPad</div><div dir=3D"ltr"><br><blockquote type=3D"=
cite">On Apr 10, 2026, at 7:32=E2=80=AFAM, john harper &lt;<a href=3D"mailt=
o:ah100tech@gmail.com" target=3D"_blank">ah100tech@gmail.com</a>&gt; wrote:=
<br><br></blockquote></div><blockquote type=3D"cite"><div dir=3D"ltr">=EF=
=BB=BF<div dir=3D"ltr">Simon<div><br></div><div>I fitted these=C2=A0some ti=
me ago; it seemed to make the steering a little lighter. </div><div><br></d=
iv><div>The drawback was that on the original setup, the lift could be adju=
sted by choosing the correct spacer washer. To make this match the recommen=
dation, I had to file down the top of the swivel axle.</div><div><br></div>=
<div>The &#39;official&#39; recommendation for lift is two thou with the to=
p nut tight.=C2=A0I would not recommend leaving the top nut loose so as to =
get the=C2=A0two thou lift </div><div><br></div><div>There needs to be a be=
tter way of adjusting the swivel axle lift=C2=A0</div><div><br></div><div>A=
ll the best. =C2=A0</div></div><br><div class=3D"gmail_quote"><div dir=3D"l=
tr" class=3D"gmail_attr">On Fri, 10 Apr 2026 at 05:04, Simon Lachlan via He=
aleys &lt;<a href=3D"mailto:healeys@autox.team.net"; target=3D"_blank">heale=
ys@autox.team.net</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote"=
 style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);p=
adding-left:1ex"><u></u>






<div>


<p dir=3D"LTR"><span lang=3D"en-gb"><font face=3D"Aptos">I=E2=80=99m tempte=
d by an email from AH Spares touting their</font></span><span lang=3D"en-gb=
"></span><span lang=3D"en-gb"></span><span lang=3D"en-gb"> <font face=3D"Ap=
tos">roller bearing kit for the front suspension=E2=80=99s top trunnion. (A=
H3000 MkII BT7). For</font></span><span lang=3D"en-gb"></span><span lang=3D=
"en-gb"></span><span lang=3D"en-gb"> <font face=3D"Aptos">the magical resul=
ts described</font></span><span lang=3D"en-gb"></span><span lang=3D"en-gb">=
</span><span lang=3D"en-gb"><font face=3D"Aptos">, it seems reasonably pric=
ed=E2=80=A6.</font></span></p>

<p dir=3D"LTR"><span lang=3D"en-gb"><font face=3D"Aptos">Have any of you tr=
ied this conversion?</font></span></p>

<p dir=3D"LTR"><span lang=3D"en-gb"><font face=3D"Aptos">Was it as easy as =
they su</font></span><span lang=3D"en-gb"></span><span lang=3D"en-gb"></spa=
n><span lang=3D"en-gb"><font face=3D"Aptos">ggest?</font></span></p>

<p dir=3D"LTR"><span lang=3D"en-gb"><font face=3D"Aptos">And, looking at AH=
4Healeys, it seems they=E2=80=99ve got their own version=E2=80=A6.has anyon=
e tried that?</font></span></p>

<p dir=3D"LTR"><span lang=3D"en-gb"><font face=3D"Aptos">And is one kit kno=
wn</font></span><span lang=3D"en-gb"></span><span lang=3D"en-gb"></span><sp=
an lang=3D"en-gb"> <font face=3D"Aptos">to be better than the other?</font>=
</span></p>

<p dir=3D"LTR"><span lang=3D"en-gb"><font face=3D"Aptos">Thanks,</font></sp=
an></p>

<p dir=3D"LTR"><span lang=3D"en-gb"><font face=3D"Aptos">S</font></span><sp=
an lang=3D"en-gb"></span><span lang=3D"en-gb"></span><span lang=3D"en-gb"><=
font face=3D"Aptos">imon</font></span><span lang=3D"en-gb"></span><span lan=
g=3D"en-gb"></span><span lang=3D"en-gb"></span></p>

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