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Member #: 60
Forgotten more than most ever know

Old farts claim that making the combustion chamber perfectly round made the fastest race engines around. That was of course verified with the famous butt dyno. But no hard evidense *smiley*

The first head I cut for my 1380 turbo head had about 42 cc and still retained the beak. I had an old Marina head to start with and the valves were pretty deep in the seats. So I machined the chamber deeper to make the chamber flat. This gave a nice increase in volume (and also screwed up the valve geometry big time)


Edited by jukka on 14th Jun, 2019.

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