Guys, another rookie question sorry.

Have a 79 242

Went to replace the strut and stub axle with another 2nd hand one....and old wheel bearing wont fit, checked, yep axle is a different diameter. Bugger.

Is this a case of just a different inner size of the bearing or will the strut not work on disc hub as well?

Also if i run 2 different sizes on the front does that mean ill be driving around in a circle all the time?

Answer to first would be great help!

Tx mark
    10 days later
    The early pre 80 cars had the smaller stub and the later ones had the larger one. I do not know the exact size but I do know when I replaced the front bearings on the 245 it used the small bearings and they were apparently the same part # as that used on HR Holdens.

    Also if i remember, using the later struts will mean your brake setup will be different on one side vs the other. I'm not sure if the solid disks are able to be used on the later style setup so you will need new brake lines and the caliper to go with it. I havent tested this, but its something to keep in mind.
    From my webpage: The 1982-on struts feature a larger diameter stub axle and are recommended over earlier 240 model years.
    How to identify: Stub diameter for the outer bearing (the Small one) increased from Ø19 to Ø22 and the inner bearing (the Big one) from Ø31.8 to Ø35 - the transition diameter from stub axle to strut body (the most important dimension for strength) increased from Ø42 to Ø45 - therefore all changes feature a diametrical increase of 3 mm.
    The 82-on strut tube also features a reduced inside pipe/tube diameter, meaning the strut insert is a lot tighter fit compared to earlier versions.
    - Split Pin for stub axle nut (wheel bearing adjustment) - For best fit buy 4 mm (5/32") diameter split pins.
    thanks gents. I assume the answer is to change both sides to the later version (which is all I have available to me anyway!

    Is it a safe bet that I will need to change discs also to the later type?

    @Anthony what is your webpage address?

    Cheers & tx Mark
    "markc88;63304" asks
    Is it a safe bet that I will need to change discs also to the later type?

    The earlier discs and calipers of this era are exactly the same, so no issue there. We are talking the thicker ventilated discs here.

    That said, some Volvo models came fitted with the cheap solid disc with matching thin calipers, eg. in 1985 they budgeted back to thin, and later changed their mind and went ventilated again I think the next year.
    I cant recall what very early 240s (77 era guess) had the solid discs. The solid discs brake very well, its just they can overheat when going down a mountain, and will warp easier than a thick ventilated type if you race through puddles
    @Anthony thanks, so just a wheel bearing swap then? Cheers Mark
    markc88;63306 wrote@Anthony thanks, so just a wheel bearing swap then? Cheers Mark
    I would say - A beefing up of the stub axle strength, and larger diameter front wheel bearings to handle higher side loads.
    A few notes:

    240's had solid discs until '79 or perhaps '80, they went to vented from '80 or '81 to '84, back to solid for '85 only, then vented for the rest of the production run.
    GT's all had vented.
    '81-'84 DL's with B21A engines may have had solids, not sure, they're a rare model.
    All 260's had vented.
    The calipers used on the two rotor types are identical apart from the width, so the pads, pistons, seal kits etc, are all the same.
    All calipers and discs fit on all hubs.
    Front brake hose and pipe design changed in '78, but no changes were made to the calipers or struts etc.

    I am told that the '75-'81 stubs/hubs use the same bearing sets as early Holdens, meaning they're cheap and easy to get.
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