Have finally begun restoring my 1967 Morris Cooper S Mk 1, dormant since 1977! Have been collecting N.O.S parts as much as possible to rebuild the 3 speed synchro gearbox. Have viewed most of the popular sites for spares,some indicating that "competition layshafts " are available. Do these layshafts help to reduce the somewhat rapid wear ? Or are there other factors involved? Some forums I have read suggest that some of these layshafts are not hardened /heat treated correctly. Can someone suggested a possible source of high quality layshafts? I believe there are Australian made items. Should I use a Leyland N.O.S item in preference to one of recent manufacture?

I've not rebuilt any 3 synchro boxes lately but on 4 synchro ones I use either Heritage MG's layshafts (all their shafts are made & heat treated in australia) or Karcraft's current ones (sourced from UK).
Both have been hardness tested here, and were over 61 HRC.
Not sure if karcraft got their 3 synchro shafts tested, I'd ring and ask.

There is a lot of stuff on the web re bad layshafts from UK, but that was a year or two ago.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

I bought Competition Layshaft last year from a well known Mini spares company in the UK had a massive bend in it. It took a zillion emails back and forth and 8 months to get it replaced.

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The bitterness of poor quality (or Crappy Workmanship) remains LONG AFTER the Sweet Taste of Low Price is forgotten.

Here's Heritage MG's 3 synchro Mini one-
http://www.mgspareparts.com.au/index.ph ... &Itemid=26

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

Where are you located??

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That's why it's good to be.............ME