[Healeys] Top Trunnion Kit

[john harper]

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 at gmail.com> wrote:

> John,
>
> What should the clearance be and how do you measure it?   Also what is the
> torque setting for the nut?
>
> Thanks.
>
> Fred
> 65 BJ8
>
> On Fri, Apr 10, 2026 at 9:36 AM Stephen Hutchings <s.hutchings at rogers.com>
> wrote:
>
>> I’ve had the AH spares trunnion bearings in for about ten years. It’s
>> been a while, but my memory is that I had to add a shim to get the
>> tolerance right.
>> It’s not a dramatic difference, but it’s noticeable.
>>
>> Stephen, BJ8
>> Sent from my iPad
>>
>> On Apr 10, 2026, at 7:32 AM, john harper <ah100tech at gmail.com> wrote:
>>
>> 
>> 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 at autox.team.net> wrote:
>>
>>> I’m tempted by an email from AH Spares touting their roller bearing kit
>>> for the front suspension’s top trunnion. (AH3000 MkII BT7). For the
>>> magical results described, it seems reasonably priced….
>>>
>>> Have any of you tried this conversion?
>>>
>>> Was it as easy as they suggest?
>>>
>>> And, looking at AH4Healeys, it seems they’ve got their own version….has
>>> anyone tried that?
>>>
>>> And is one kit known to be better than the other?
>>>
>>> Thanks,
>>>
>>> Simon
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