With the bi turbo running well, we can divert to this baby!
Suspected head gasket, which they are famous for across the fire rings. Although so mayo was present
So onto a compression test see whats what. It was running badly anyhow
So the results where
No.6 190 psi
No.5 215 psi
No.4 220 psi
No.3 175 psi
No.2 145 psi
No.1 135 psi
Hmmm, all over the shop, no 10% deviation here! My moneys on pots 1 and 2 sharing some air! So this warrants further investigation.
Rocker off, this explains the mayo. These engines always end up like this if they sit like this clearly has for a while.
I thought i'd time it up to check how things were. Now this slots over both cams and sits down on the head when all is well. The timing is out on this! No way it was ever going to fit!
this is how the same tool sits when its all spot on. From my e36 top end rebuild
Something well awry here, the chain has been wearing the bolt heads down on the back of the vanos unit! The unit is also stamped up with "99" on it. Theres no way a 2004 built alpina would of left the factory with a 99 vanos unit in my eyes
The chain is worn, the sprocket is f ** ked its all ball bagged here really and theres aloads of play in the vanos gear in every direction. I can't remember if this is normal when off the engine?
No wonder it felt flat? It can't of gone very well like this even before the now potential headgasket going?
Horrid, these where nasty when they were 5 years old. No chance of getting this undone on the car.......so to plan B. But First
My favourite BMw tool for removing the cams on these 24v sixes also does the 318iS engines
Cams out, inlet unbolted. Theres surprisingly a lot more room on the exhaust side than an e36 so I was able to unbolt the manifolds from the head with ease tbh.
Head off and just like they all do! big time here
It was going here and on another also which eplains the other iffy compression readings.
Even with timing out its not had any contact in my eyes
So that's where its at. I'm going to get the head pressure tested to be sure. And get some expensive alpina bits on order
Theres other job to do while i'm waiting like discks and pads all round, wishbones as theres play in the ball joints on both sides and the rear bushes are gone.