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  #1  
Old 22-06-16, 07:32
pauldavies pauldavies is offline
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Default Morris C8

Just an interesting conundrum for every one, on removing my cylinder head today I found there were two copper gaskets fitted, any ideas? I did use the timber wedge technique thanks to Philip@cmp.com.
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  #2  
Old 22-06-16, 07:45
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cletrac (RIP) cletrac (RIP) is offline
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Likely trying to seal a warped head or block.
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  #3  
Old 22-06-16, 07:51
Greg Beeston Greg Beeston is offline
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Default Performance

It may not be why your C8 has two head gaskets but I've heard the PMG used to fit two head gaskets to lower the compression / performance of there cars
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Old 22-06-16, 10:27
pauldavies pauldavies is offline
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Default Morris C8

Interesting David and will check out the head and block tomorrow.
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  #5  
Old 22-06-16, 14:38
Phil Waterman Phil Waterman is offline
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Default Also check piston to head clearnce

Hi Paul

Glad you got the head off. Are the piston tops flat or domed? If they are domed check to see how much clearance there is piston to head. Did these engines have or change from flat to domed piston?

Reason I say this is that when had to replace the head one my HUP the new head was ment for flat top pistons but the engine had domed piston I replaced the pistons.

Having said all that my bet is on Greg's theory done to allow the engine to burn lower octane fuel.

Cheers Phil
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Old 22-06-16, 19:12
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Richard Farrant Richard Farrant is offline
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The Morris is a side valve, they are low enough compression as it is unless a farmer had been using it with Vaporising oil or as you might call it Kero or Paraffin, but my bet is one of two possibilities, the head is warped, not unusual, or that the head has already been skimmed (too much) and now the valves are kissing the head so fitted 2 head gaskets! Only way to know if the head has been skimmed too far is to get another Morris owner with a C8 or C4 to measure the height of their head.
Pretty sure there were no domed pistons on these side valves, only ever seen flat tops.

regards, Richard
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  #7  
Old 23-06-16, 07:16
pauldavies pauldavies is offline
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Default Morris C8

Thanks for your input every one, I have checked the head & block and all is flat and good. The pistons have flat heads and the cylinder head has plenty of clearance, the sparking is over the valves so no problem there either. Maybe the theory of using other fuel maybe the reason, pretty sure the guy who did the restoration didn't take the head off as the compression was good but I will ask him. Have only one port to clean up, bit of corrosion due to water getting past a loose plug on no 4.
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