A mate has purchased a Cobra replica, not a home-built one but one built by A.K. Sportscars Ltd. It's a very well built (and expensive!) car that is fitted with a brand new 350 SBC built by Huddart engines backed by a Getrag 5 speed manual gearbox. So far it has covered 400 miles.
When he took delivery a month ago he noticed an oil leak from underneath so I went to have a look and oil was leaking from the crankshaft rear oil seal. The supplying dealer took the car back and replaced the oil seal in-situ. The dealer kept the car for a few days to make sure the leak had stopped and it hadn't, so they took the engine out and replaced the crank seal again and also replaced the sump and seal "just in case". This was all refitted and checked. All was leak-free so they delivered the car back.
Over the weekend John took the car out and no oil on the garage floor. Took it out later and one spot of oil on the floor. Next day took it out and more oil on the floor plus visible oil drips coming from the bellhousing dust shield....... Obviously looks like the crank oil seal again as there are no signs of oil anywhere else on the engine.
Does anyone know if there are known issues with these engines? It is a "built" engine with a claimed 400bhp. If the crank seal is still leaking (and they have checked for any burrs on the end of the crank) what else could be causing it?
Anywhere else and he wouldn't be too bothered but obviously a crank oil seal is going to get worse and could contaminate the clutch.