Exactly, and that what them there flaps are all about. I must get round to sorting some out for mine while I’m thinking about it.VW air cooled engines over cool at idle.
Those temps are spot on, well built and tuned engine thereI’ve I got a 2007cc running with twin Weber ICT carbs. I don’t have any issues of over-heating and don’t have an external cooler. When I was driving on the motorway yesterday at 64mph I noticed the gauge read 90 degrees which is the highest it’s been for a while as it is usually stuck on 80 deg. It was a very hot day though.
The engine does have a deep sump and holds 4.5 litres of oil.
Yup, my 2276 normally runs at 180f on a motorway blast but with hot weather like what we’ve got atm it will go to 195. If it reaches 195f it soon drops back down 180ish if I slow down or get stuck in traffic. Oil temps on really hot days up to 215f are perfectly acceptableI've always found that my engine cools down stuck in motorway traffic!
A deep sump doesn’t reduce oil temps, Gene Berg proved this many years ago. A deep sumps purpose is to have the oil level lower in the engine and get it away from the rotating assemble so oil doesn’t get whipped up and aerated.My engine(2017) was built by the same engine builder as MIKE202 and I drove it home from the garage in 25 degree heat.
Four hoursoops:) of constant driving and did not exceed 85 degrees. Mine has a deep sump also, but it is the shallow model and does
not catch on anything.
J & P
A deep sump doesn’t reduce oil temps, Gene Berg proved this many years ago. A deep sumps purpose is to have the oil level lower in the engine and get it away from the rotating assemble so oil doesn’t get whipped up and aerated.
This is also correct. Either way they have no effect on coolingII believe it was also intended to inhibit oil-surge, whereby oil surges under linear acceleration & deceleration or centripetal acceleration under "high-speed" cornering, resulting in the oil-suction tube being no longer immersed in oil and hence sucking in a mixture of oil & air.