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Formhalls Vintage & Racing Ltd

Notes on assembling White Metal Bearings

in HOYTS 11R  & 11Z3 - The supreme white metals.

Please read before starting work.

These notes are given as general guidlines to those customers for whom we have carried out white metaling, as an aid during re-assembly

Besides the normal good engineering practice of working cleanly, tightening down evenly etc., the following points should be noted.

*              The crankshaft and cases etc. have been wiped / brush cleaned only. Ensure that oilways are completely free from sludge, swarf etc. before assembling.

*              During assembly, avoid turning shell bearings until their retaining  nuts/bolts are fully tight, i.e.: allow them to be “nipped” into their machined running shape first.

*              All bearings, shims etc must be fitted exactly in the positions as delivered. If bearings already fitted in caps are to be removed, ensure that they can be easily re-matched to their correct position -YOUR ORIGINAL MARKS MAY HAVE BECOME OBSCURED or METALLED OVER. Paint is best for remarking - DO NOT stamp mark or indent any part of the bearing or its cap etc.

*              If bearings are to be fitted to a worn crank, and have been machined to a given size ( i.e.: crankshaft not supplied ), any tight spots should be lightly scraped, to ensure free running before final assembly.

*              When assembling, make sure that the edges of any shims fitted do not foul the crank.

*                Bearings without positive locator (e.g.: dowel or screw) often have a degree of movement in their housings - ensure that all oil holes are aligned before tightening

*              Before starting a newly assembled engine prime the oil ways with an oil can, or crank the engine with the ignition off until all air has been bled from the system.

*              Do not “run in” the newly assembled engine for long periods on fast idle, or tick over – you will overheat the oil, and may damage the white metal. Instead run in by light driving, with frequent use of the gears.

*          The tightening torque’s for your bearings are:

                 BIG ENDS                                   lbsft.

                       MAINS                                   lbsft.

             To contact us: Phone 01725 511684    

                                    Fax 01725 511684     

Email: Enquiries@formhalls.com 

Formhalls Vintage & Racing Ltd. Greycott, Lower Densome Wood, Woodgreen, 

New Forest, Hampshire, SP6 2BE England

(Callers by appointment only please)

   _{Practicing Preserving and Passing on British Tradition}