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Cooper S Head

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76van

Post subject: Cooper S Head

Posted: Tue Feb 01, 2011 6:44 pm

848cc

Joined: Sun Jun 13, 2010 3:54 pm
Posts: 180
Location: blue mountains, nsw

hi, i need the sequence for undoing the bolts on a cooper s head.if anyone can help it would be greatly appreciated.

also can it be used on an 1100 & would there be any benefit ?

many thanks
jayson

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drmini in aust

Post subject:

Posted: Tue Feb 01, 2011 6:52 pm

religious status

Joined: Fri Mar 19, 2004 6:19 pm
Posts: 39762
Location: near Baulkham Hills, NSW

Start at the ends (alternately) and work inwards. Undo the S end stud and bolt first.
[edit] Method is applicable to all A series heads.

_________________
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. :mrgreen:

Last edited by drmini in aust on Wed Feb 02, 2011 6:50 pm, edited 1 time in total.

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76van

Post subject:

Posted: Wed Feb 02, 2011 5:35 am

848cc

Joined: Sun Jun 13, 2010 3:54 pm
Posts: 180
Location: blue mountains, nsw

thanks very much dr mini,greatly appreciated.

cheers
jayson

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GT mowog

Post subject:

Posted: Wed Feb 02, 2011 6:13 am

Mods rock!

Joined: Fri Oct 03, 2008 9:02 pm
Posts: 5079

If you fit it to an 1100 engine, might need to watch yr Compression Ratio, it will be higher with the C/S Head and so may lead to pinging. You may also need to make sure the valves don't kiss the block, depends on cam and rockers you have. As far as benifits go, you may loose some low RPM torque but you'll likely gain at at higher RPMs.

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76van

Post subject:

Posted: Wed Feb 02, 2011 10:23 am

848cc

Joined: Sun Jun 13, 2010 3:54 pm
Posts: 180
Location: blue mountains, nsw

thanks gt,as far as i know it`s a stock 1100 so i`ll just leave it as it is.

cheersjayson

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drmini in aust

Post subject:

Posted: Wed Feb 02, 2011 6:10 pm

religious status

Joined: Fri Mar 19, 2004 6:19 pm
Posts: 39762
Location: near Baulkham Hills, NSW

GT mowog wrote:

My bad, I thought he was talking about the undo sequence, not whether an S head would work on a smallbore.
:oops:

Now edited above post..

_________________
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. :mrgreen:

Last edited by drmini in aust on Wed Feb 02, 2011 6:50 pm, edited 1 time in total.

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MG Rocket

Post subject:

Posted: Wed Feb 02, 2011 6:16 pm

1275cc

Joined: Sat May 02, 2009 4:53 pm
Posts: 3135
Location: Port Stephens, a little north of Newcastle, Australia

I think there were two questions and both were answered.

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GT mowog

Post subject:

Posted: Wed Feb 02, 2011 6:49 pm

Mods rock!

Joined: Fri Oct 03, 2008 9:02 pm
Posts: 5079

MG Rocket wrote:

I think there were two questions and both were answered.

Yeah and thanks to the Doc for the advice on extraction

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