[Mgs] follow up on mga 1622 suspension issues

[Barney Gaylord]

As requested, checking in.

The MGA Twin Cam cars and the "Deluxe" cars  with pin drive steel 
wheels and Dunlop all wheel disc brakes use tapered rolller bearings 
up front and do require shims.

The MGA 1500, 1600 and 1600-MK-II with Lockheed brakes all use ball 
bearings in the front hubs.  These do not use shims.  Distance 
between shoulders in the rotating hub is eactly same as length of the 
inner race spacer.  This holds inner and outer bearing races exactly 
same distance apart when the spindle nut is tight.  Internal bearing 
clearance is then a function of quality of construction of the ball 
bearings.  If the bearings are loose they need to be replaced.  If 
the outer races get loose in the rotating hub thebn the hub needs to 
be replaced.  If wear in the hub bore is not too bad, you might set 
the bearings into the hub with Loctite 620 bearing set adhesive.  The 
adhesive may require heat for future disassembly.

With inner race spacer in place, and both bearings pressed in with 
outer races firmly against the hub shoulders, the inner races should 
touch the spacer.  Since there is a bit of internal clearance in the 
bearings, the spacer may move around.  If you squeeze the inner races 
together with the spacer, this shoud hold the spacer in 
suspension.  If there is clearance between inner races and the spacer 
when pressed together, then there is a mismatch of parts (spacer 
length not matching distance between shoulders of the hub).

I don't have parts in hand to measure at the moment.  Perhaps someone 
can measure and post length of the inner race spacer for reference.

Barney (in Utah today).



At 01:39 PM 7/3/2015 -0700, Clayton Kirkwood via Mgs wrote:
>....
>Yep. From what I've learned here, one of the big differences between 
>a 1600 and 1622 MkI and MkII v. the deluxe and twin cam, is the 
>brakes. Up front, the deluxe and twin cam have the Dunlop braking 
>which do require the shims. It isn't shown in the picture you 
>quoted, but below in the listing, there are shims listed for the 
>deluxe and twin cam.
>
>crk


>From: Charley & Peggy Robinson [mailto:ccrobins at ktc.com]
>Sent: Friday, July 03, 2015 1:12 PM
>To: crk at godblessthe.us; mgs at autox.team.net
>Subject: Re: [Mgs] follow up on mga 1622 suspension issues
>
>.... Here's the intended page:
><http://www.mossmotors.com/Shop/ViewProducts.aspx?PlateIndexID=29224>http://www.mossmotors.com/Shop/ViewProducts.aspx?PlateIndexID=29224
>
>I looked more carefully.  There is a different spacer, outer bearing 
>& the shims for the Mk II DeLuxe & Twin Cam.
>
>Trying to find the right MGA is a PITA.  It looks like the Mk.II 
>DeLuxe had a 1622cc engine but it's still located as a MGA 1600 in 
>most of the manuals.  I wish Barney would check in.
>
>CR
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