Well, curiosity got the better of me...
As everyone knows there was a ticking noise from our P38 that I would have sworn was a top end tick and probably from a faulty tappet.
Video here so everything stays in one thread: Click Here - YouTube Video...
On Sunday, I dropped the wife at Edinburgh Airport at 8.30am, drove the hour home and started tearing the P38 apart.
I got the inlet manifold and rocker covers off the engine and had a good look around, without seeing much I then proceeded to take the rocker shafts off. The passengers side one was nice and oily, the shaft was still silver and everything was moving freely. The drivers side one wasn't quite as nice, the shaft had browned, and a couple of the rockers were stiffer then I'd have expected. Number 4 cylinders rocker arm wasn't as lubricated as the others either and there was some sludge in the oil way under the rocker shaft.
None of the rocker arms looked worn though, all of the pushrods looked ok and none of the tappets were dished either. I was getting curious at this point as with the noise it was making I was expecting to see something that was obviously wrong. I was also convinced after listening to the engine that the noise was coming from the front of the NS bank.
Anyway, I decided to keep going as I'd gotten this far. I tried to be clever and remove the manifolds with the cylinder heads but gave in on the passengers side as the manifold was a doddle to remove, on the drivers side I managed to fiddle with the bolts enough to get them undone and then removed the starter motor as the steering shaft makes getting to the back manifold bolts a pain in the tits.
By the time I'd stripped it on Sunday we had visitors arriving so I had to get cleaned up, after they left I was tired and was up early for work on Monday so I left it alone having given it a very, very brief look over.
Last night I went back to the workshop for a proper look and I'm 99% sure I've found the cause of the knocking noise... and much to my amazement, it wasn't the top end!
So... it looks fairly conclusive that the liner for the number 3 cylinder has moved. All of the other 3 are flush on that bank and you can see on the number 5 cylinder next to it that there's no shiny lip at all. When running my finger nail over the others, there's no lip, on number 3 there's a lip that I can very easily click my finger nail in.
So... she's currently sitting looking like this in the workshop...
I spoke to Rob at V8 Developments yesterday about a top had linered block, a high torque camshaft and some stage 1 gas flowed cylinder heads. He advised me that if we're buying the components from them, they don't actually charge to assemble the engine so I'm going to buy an entire engine from them as that way all I have to do is fit it and bed the camshaft in before following the running in procedure and it'll come with a 12 month warranty on the complete unit.
Once I'm certain and I've given Rob a deposit, it's a 3-4 week lead time on the new engine so I've got plenty time to get everything out of the engine bay, get the car dragged out of the workshop and steam clean everything in sight. I'm determined I'm going to do this properly whilst she's in bits.
The engine number on this car has also been damaged too...
It looks like it should be XM56M95B31. Is there a way of decoding these to find out any more about them like there is with some manufacturers engines?