[Healeys] Top Trunnion Kit

[Harold Manifold]

Hi,

I fitted these bearings when restoring my car. I can't comment on how much
they changed the steering because I never drove my car before the
restoration. They have about 4,000 miles on them, and I have no complaints
so far. I set the end float to 0.002. I also fitted new king pins and
bushings and had them reemed. New kingpins aren't needed for the trunnion
bearing but mine needed a refresh. I didn't use any other shims than those
that came with the kit.

I agree with cutting the top unthreaded part of the king pin off to help
with clearance.

The instructions that came with the kit are attached.

Hope this helps,
Harold


On Fri, Apr 10, 2026 at 10:29 AM Michael Salter <michaelsalter at gmail.com>
wrote:

> There is meant to be 0.002" of end float of the swivel axle on the swivel
> pin (kingpin).
> No torque specification for the nut is provided in the factory manuals.
>
> M
>
>
>
> On Fri, Apr 10, 2026 at 10:50 AM 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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