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What have you done today with your Austin Seven
"Does it have Zinc added "

Not at all sure that zinc is needed in an unmodified Seven engine. Modern oils don't have zinc as it damages catalysts.

My son's Maserati engine has cams 25mm dia with a 10mm lift. It revs to 6,500rpm so the rubbing speed of cam on flat follow is huge. Zinc is essential and unworn 2nd hand cams are very rare.
The Austin with small cam, lower lift, curved followers and max 4,500rpm is in a different league.
Jim
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Messages In This Thread
Peak District well dressing - by Tony Griffiths - 31-08-2019, 05:00 PM
RE: What have you done today with your Austin Seven - by AustinWood - 10-09-2020, 01:38 PM
Genuine old and imitation new - by Tony Griffiths - 01-07-2021, 03:37 PM
Crankcase machining - by Chris Garner - 29-08-2023, 08:59 PM
Massed ballon landing and A7 - by Tony Griffiths - 03-09-2023, 08:27 PM
Popping and not pulling well? - by Biddlecombe - 10-04-2019, 03:37 PM

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