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 Post subject: Morris 1100S blocks
PostPosted: Thu Sep 06, 2018 7:05 pm 
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848cc
848cc

Joined: Sun Jul 03, 2016 1:44 pm
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I have acquired a couple of 1100S blocks. The blocks with no Cooper S back plates. Were they all thin, thick or a mixture of flanges? Cheers.


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 Post subject: Re: Morris 1100S blocks
PostPosted: Thu Sep 06, 2018 7:15 pm 
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1275cc
1275cc
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Joined: Sun Apr 29, 2012 1:19 pm
Posts: 2982
Location: Wollongong, NSW
Mix. Also some were large journal cranks and some were small

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 Post subject: Re: Morris 1100S blocks
PostPosted: Thu Sep 13, 2018 7:27 am 
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religious status
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Joined: Fri Mar 19, 2004 6:19 pm
Posts: 38583
Location: near Baulkham Hills, NSW
Thin flange ones all had the small journal crank and S rods. So did early thick flange ones. From around 12YDTaH10500 they got the big journal crank and heavy lump rods.
Even the thin flange ones are much stiffer than a Cooper S block.
No need to tap flange holes bigger IMO. They don't leak there.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank @7000+, 45 Dellorto, RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. Going harder with Stealth Black Box in.:mrgreen:


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