03-10-2019, 09:21 PM
(03-10-2019, 04:05 PM)DaveT Wrote: I'm thinking of fitting a LC head when I have finished the decoke
Beware of fitting a standard LC head if you have enlarged inlet valves!
Twenty five years ago, I had such a block on a '28 Chummy, where the bores were +60 and incredibly worn. The 14mm plugs in the HC head continually oiled up, so I decided to fit a LC head. It resulted in 4 bent inlet valves as the HC head had been machined out square to clear the valves, which "interacted" with the unmodified LC head. I managed to straighten them again (that's another story!) and continue but it cost me a lot of hours. Such is how we learn...…...
Nowadays, I run a HC head with 18mm plugs.