cylinder head ventilation Options

[turbo2]

Folks,

Heard some where that when converting to carbs one better improve ventilation of the engine internals by installing vents in the cylinder heads connecting to an oil puke tank/bottle.

Why is this? as cant see how installing carbs will affect the crankcase pressure unless it's combined with a large increase in cylinder volume. The vent thru the filler neck should be good enough. Although know from my time tinkering with bikes that improving the crankcase ventilation could give 6-7 hp on a 150 hp motor so might be missing the obvious.

Nevertheless making a nice puke bottle of a guiness can which will seriously enhance the engine bay appearance.

Also if anyone have done this before would much appreciate a few pics as to where you fitted the vents.

Thanks in adv
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