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Spaceboy
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PostPosted: Wed Apr 18, 2007 8:14 pm 
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1360cc
1360cc

Joined: Mon Nov 01, 2004 4:36 pm
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yea mine also has hardened seats and no wear 8)
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Morris 1100
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PostPosted: Wed Apr 18, 2007 8:23 pm 
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Causing or creating vexation

Joined: Wed Jul 21, 2004 10:32 pm
Posts: 19124
Mike, Valve seat recession is not just a result of using unleaded fuel, when I started racing Holdens in the late 80's I used to have trouble finding heads that were usable without having to fit valve seats, and this was while you could still buy leaded. This was the reason that HQs were allowed to fit slightly oversize valves, so you could re-claim a damaged head.

Most of the problems are from heat and tune.
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Mick
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PostPosted: Wed Apr 18, 2007 8:28 pm 
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SooperDooperMiniCooper ExpertEngineering
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Joined: Fri Apr 29, 2005 9:46 am
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Location: Under the bonnet son!
*Sigh*

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All garage work involves equal measures of enthusiasm, ingenuity and a fair degree of irresponsibility.
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slinkey inc
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PostPosted: Wed Apr 18, 2007 8:34 pm 
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1275cc
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Joined: Wed Jun 14, 2006 9:45 pm
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Location: Adelaide, SA
Spaceboy wrote:
yea mine also has hardened seats and no wear 8)


Thanks for sayin but the pics (as they say) does not have a hardened seat.

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1964 Morris 850, 1330 Supercharged - 81.8hp atws.
1975 Leyland Mini S 1100S powered - Nice and reliable.
1977 Leyland Mini LS - Project LS-T 8)
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