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Hi Gary,
Fitting is near identical to using the original phosphor bronze bearing, exc=
ept you use the needle roller bearing. i.e. You replace the phosphor bronze b=
earing with the needle roller bearing.=20
You have to shim the trunnion irrespective of which bearing you choose to us=
e.=20
If you rebuild your kin pins and don't use a needle roller bearing you still=
need to shim for correct vertical end float.=20
And shims are available from most of the usual suspects.=20
E.g. https://www.ahspares.co.uk/austin-healey/big-healey/Suspension-Front/SH=
IM-0004-trunnion-bearing.aspx
Lots of other people have fitted them over the past 10 years, and I'm not su=
re why you'd need a machine shop to get involved?
http://www.britishcarforum.com/bcf/showthread.php?16711-Trunnion-roller-bear=
ings
Best
Chris
Sent from my iPhone
> On 10 Aug 2016, at 2:21 AM, warthodson@aol.com wrote:
>=20
> I have not tried the roller bearings in the top trunion, so I cannot comme=
nt on how effective they are in reducing the overall steering effort require=
d as compared to a correctly set up & lubricated original front suspension. H=
owever, simply as a warning to anyone reading this discussion who is not com=
pletely familiar with all the issues, I have read that they (trunion roller b=
earings) may require shimming to obtain the proper clearance (vertical end f=
loat) of the kingpin & it is my understanding that this is especially diffic=
ult because no shims are available or machining may be required.
> =20
> Gary Hodson=20
> =20
> =20
> -----Original Message-----
> From: Chris Dimmock austin.healey@gmail.com
>=20
> Hi John,
> Thick oil/ Penrite Steering box grease will also make the steering heavier=
.=20
> So will under inflated tyres.
> So will an Unlubricated top Trunion phosphor bronze thrust washer, or poor=
ly shimmed. I.e. Too tight.=20
> So will a smaller steering wheel.=20
> So will wide tyres.=20
> So will thick oil in the steering idler box.=20
> So will too much castor.=20
> =20
> I have wide (6 inch) tyres, heaps of negative camber, and a small steering=
wheel.=20
> I run 32 - 34 PSI in the front tyres, 2lb less in the rears.=20
>=20
> Yes - Penrite type steering box grease will make your steering heavier.=20=
> To get it back to "normal", I also run these.=20
> https://www.ahspares.co.uk/austin-healey/big-healey/suspension-front/top-t=
runnion-bearing-kit-pair.aspx
> No commercial interest.=20
>=20
> Try Roller bearing top Trunion bearings.=20
>=20
> Best
> Chris=20
>=20
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<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charset=3D=
utf-8"></head><body dir=3D"auto"><div>Hi Gary,</div><div>Fitting is near ide=
ntical to using the original phosphor bronze bearing, except you use the nee=
dle roller bearing. i.e. You replace the phosphor bronze bearing with the ne=
edle roller bearing. </div><div>You have to shim the trunnion irrespect=
ive of which bearing you choose to use. </div><div>If you rebuild your k=
in pins and don't use a needle roller bearing you still need to shim for cor=
rect vertical end float. </div><div>And shims are available from most o=
f the usual suspects. </div><div>E.g. <a href=3D"https://www.ahspa=
res.co.uk/austin-healey/big-healey/Suspension-Front/SHIM-0004-trunnion-beari=
ng.aspx">https://www.ahspares.co.uk/austin-healey/big-healey/Suspension-Fron=
t/SHIM-0004-trunnion-bearing.aspx</a></div><div>Lots of other people have fi=
tted them over the past 10 years, and I'm not sure why you'd need a machine s=
hop to get involved?</div><div><a href=3D"http://www.britishcarforum.com/bcf=
/showthread.php?16711-Trunnion-roller-bearings">http://www.britishcarforum.c=
om/bcf/showthread.php?16711-Trunnion-roller-bearings</a></div><div>Best</div=
><div>Chris<br><br><div>Sent from my iPhone</div></div><div><br>On 10 Aug 20=
16, at 2:21 AM, <a href=3D"mailto:warthodson@aol.com";>warthodson@aol.com</a>=
wrote:<br><br></div><blockquote type=3D"cite"><div><font color=3D"black" si=
ze=3D"2" face=3D"arial">
<div>I have not tried the roller bearings in the top trunion, so I cannot co=
mment on how effective they are in reducing the overall steering effort requ=
ired as compared to a correctly set up & lubricated original front suspe=
nsion. However, simply as a warning to anyone reading this discussion w=
ho is not completely familiar with all the issues, I have read that they (tr=
union roller bearings) may require shimming to obtain the proper c=
learance (vertical end float) of the kingpin & it is my understanding th=
at this is especially difficult because no shims are available or machining m=
ay be required.</div>
<div> </div>
<div>Gary Hodson </div>
<div> </div>
<div> </div>
<div style=3D"color: black; font-family: arial,helvetica; font-size: 10pt;">=
-----Original Message-----<br>
From: Chris Dimmock <a href=3D"mailto:austin.healey@gmail.com";>austin.healey=
@gmail.com</a><br>
<br>
<div id=3D"AOLMsgPart_1.2_4d5a863e-0f03-4a96-852a-aa09bcba5682">
<div class=3D"aolReplacedBody" dir=3D"auto">
<div>Hi John,</div>
<div>Thick oil/ Penrite Steering box grease will also make the steering heav=
ier. </div>
<div>So will under inflated tyres.</div>
<div>So will an Unlubricated top Trunion phosphor bronze thrust washer, or p=
oorly shimmed. I.e. Too tight. </div>
<div>So will a smaller steering wheel. </div>
<div>So will wide tyres. </div>
<div>So will thick oil in the steering idler box. </div>
<div>So will too much castor. </div>
<div> </div>
<div>I have wide (6 inch) tyres, heaps of negative camber, and a small steer=
ing wheel. </div>
<div>I run 32 - 34 PSI in the front tyres, 2lb less in the rears. </div=
>
<div><br>
</div>
<div>Yes - Penrite type steering box grease will make your steering heavier.=
</div>
<div>To get it back to "normal", I also run these. </div>
<div><a href=3D"https://www.ahspares.co.uk/austin-healey/big-healey/suspensi=
on-front/top-trunnion-bearing-kit-pair.aspx" target=3D"_blank">https://www.a=
hspares.co.uk/austin-healey/big-healey/suspension-front/top-trunnion-bearing=
-kit-pair.aspx</a></div>
<div>No commercial interest. </div>
<div><br>
</div>
<div>Try Roller bearing top Trunion bearings. </div>
<div><br>
Best</div>
<div>Chris <br>
<br></div></div></div></div></font></div></blockquote></body></html>=
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