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If the oil stem seals are the originals (20 years old) then they will be hard, cracked and worn. There are three piston rings, compression, oil control and a scraper, you can have good compression and burn oil too if the oil control rings are worn, broken or gummed up with carbon. The compressions are quite good suggesting the bores aren't oval.

Downpipe finally arrived... Wrap it in titanium heat wrap. Also bought a titanium cover for the hotside Here it is fitted without the wrap. Here it is with the wrap and head shield on. Hoping to keep under bonnet temps as low as possible. Had to modify my wastegate adapter. Nothing I seem to buy from the states ever fits without me adapting it lol More wastegate springs This picture is just because I was bored lol but it shows my us fuel rail. That's all for now

Then it's sounds as though the seals are quite badly worn mate... When you take it for a run the higher revolutions of the engine are burning the oil off quicker than its bypassing the seals... And upon idling after a run, it may take quite a while to reappear however, leave it idle long enough & I'm sure it'll reappear!! Mk4motionVR6

I have read above buddy & as I've tried to explain to you.. Your symptoms are that of worn valve stems/seals, because the blue smoke becomes less as the engine warms up!! When cold everything is contracted thus causing oil to bypass the valve seals.... ("Worn valve seals"). Mk4motionVR6

I have one mate, unfortunately its in red. I picked it up cheap on eBay..think its 80mm ID and the length is 50mm if you want to get one from eBay cheap

Hey bud... Sounds like the typical symptoms of worn valve seals. The valve seals get hard over time especially if different oils have been used i.e. Semi synthetic/fully synthetic or mineral oil... Lack of use & long periods of an engine being idle can also contribute to internal engine seals wearing out sooner than that of a well used engine. Eventually the oil in the head seeps it's way down the valve stem & into the cylinders where it'll pool in the seat of the closed valves & drip into the cylinder of the open valves, so on initial start up you'll see blue smoke as the bypassed

Loads of work has been going on with the supercharger, Loads and loads of research has been done. No help from the company who took over Z-engineering... RUF. There meant to not speak very good English anyway, as there a Swedish company. So I found almost all the information I need by looking in to bearings, Different types of bearings, how different types of bearing work. How to fit and remove bearings safely, etc. I found some of it out by watching training videos on youtube, that bearing companies had uploaded. This is the Video for the main bearings, that run inside the supercharger, They

Thanks for this infos i visit a lot of topics, it's very interessants :-) My topic : http://www.vr6oc.com/forum/topic/45482-my-french-mkiii-vr6/