As some of you may recal, back in october last year a garage incorrectly set the tensioner when I had a waterpump and cambelt changed. The tensioner backed off resulting in 16 bent valves and cracked guides etc etc (though I never actually saw any internal damage). Once I eventually got the garage to takes responcibility they agreed to rebuild it and I have a invoice for the work that includes
pressure test and skim
head gasket set
16 valve stem seals
1 oil seal
etc and the other bits like belt
Now since this point I noticed the car using oil (where as before it used none), but a few people (not mig peeps) that this wouild be normal after the head off and it would settle down. Well that was 5 thousand miles ago and its not settled down at all, infact it may be using more than ever.
So I've had a play and it only seems to be blowing smoke 5k revs and above, up until that point and around time its fine and performance seems as good as its ever been, but after that a bluey black haze developes around the back. Incidently after I got the car back I did a compression test and though I can't recall the figures I recall they were very healthy across all cylinders, no worries at the time though I haven't tested again recently.
I changed the oil recently and added some of the wynn's stop smoke stuff (I am aware this only largely thickens the oil) and may have reduced smoke slightly but tappets are way noisiey and take longet to settle in the morning.
So is it possible to diagnose the oil leak without a strip down?
I'm hoping your going to say its likely to be the head and not that when the valves and pistons met it somehow caused the rings to scratch the bores??? I'm planning to take the car off road for a month iin the summer before I move to Manchester hopefully during which time I'm planning amonst other things taking the head off for a good nosey and rebuild (inc tappets) with possibly some mild DIY porting
err, sticking my neck out but
16valves, guides and stem seals, but no replaced pistons ?
It could be that the pistons looked okay, but in fact are far from it, especially now.
Thats an educated (somewhat) guess though.