Joined: Aug 2017 Posts: 226 Threads: 9
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Location: Edinburgh/Lothians
Car type: Seven Special
Joined: Jan 2018 Posts: 100 Threads: 39
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Location: Cheshire
Thats really excellent, far better than my man shed effort. I did think about the possibility of making the water passage holes in the gasket slightly bigger and fitting some viton or PTFE "O" rings in to seal the the head gasket. Anybody tried that or something similar yet? Would depend on the condition of the block and head around the water passages.
Joined: Aug 2017 Posts: 3,372 Threads: 105
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Location: Darkest Bedfordshire
Not that exactly Scarlet but I did attempt to address slowly expanding water passages in the head by boring them oversize and loctiting in inserts to bring them back to size. Only done 1000 miles since but it hasn't spat them out yet. The head did needed facing flat afterwards.
Joined: Aug 2017 Posts: 313 Threads: 9
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Location: TINOPAI NZ
Hi All
Congratulations to all the gasket makers
What Thickness copper is being used on these Heads
Normally copper Head gaskets will be varied in thickness depending on Tuning requirements (ie) lower or higher Compression
Cheers
Colin
NZ
Joined: Nov 2018 Posts: 215 Threads: 0
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Location: Norfolk
Car type: 1934 RP Saloon
Really impressed by the gasket makers. I did once make a pair of copper gaskets for a 2 stroke 2 cylinder marine engine for a boat I had. I cut these out with a coping saw and drilled the stud holes by clamping the 2 heads together and using the stud holes as guides. They were annealed with a blowtorch and cleaned up with a scotch pad. They were very successful and gave many years of good service. No where near the standard shown here though!
Joined: Aug 2017 Posts: 226 Threads: 9
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Location: Edinburgh/Lothians
Car type: Seven Special
Hi Colin,
Just picked up your question. 0.5mm copper sheet.
Paul
Joined: Aug 2017 Posts: 2,748 Threads: 31
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Location: Auckland, NZ
I am always surprised that solid gaskets without narrow raised borders work. With the various large temperature gradients it is difficult to imagine surfaces remaining flat.
To remedy corroded holes, O rings seem a good idea; one problem is that any significant gas pressure leakage is in the direction opposite that O rings work. Where there is room, fibre rings probably just as effective. but either way the machining is much the same as involved as for a brass insert.
Has anyone had experience with lapped heads without gasket?