I think all these are good ideas but, just a few thoughts: - The only people who benefit from catch cans are people who sell catch cans. - You can make one up yourself from any type of container -- just vent the can to atmosphere. Do not run it back into the inlet manifold because even the most expensive catch can will only reduce inlet fouling -- not eliminate it. - The most important thing is that the crankcase has unimpeded ventilation. The older and more worn an engine becomes the more important this is since "blowby" is likely to increase. - With dry sump engines and racing clearances crankcase venting sometimes has to reverse and allow atmosphere to be sucked into the crankcase to allow scavenge pumps to work properly. This latter observation is I admit something of a disabling dichotomy for those of us who play around with Morgans.
