I was thinking your breather stuff probably blew off and you'd find it behind the battery. I'm still waiting.
Its a WO, originally had FI, doesn't have the oil filler hole machined in the front of the case, no dipstick hole through the alternator tin and no hole machined in the case for a fuel pump. From this I deduce its a 914, but could be 914/411, same engine. Don't know if the 914 had sodium valves or not, guess I'll find out when I pull them. Has the medium big valve heads so again I assume its 914
Took some finding, but you can just make out the small filler cap in this pic... same location as the type 3
Right, so mine didn't have a breather box when I picked it up but I assume it must have had the top filler neck as the case isn't machined for an oil filler and has the matching alternator tin, sans hole. As far as I know they're identical engines though with the domed pistons, not bus dished pistons. Mine has the timing hole in the top of the fan case with a screw in blank cover, and indexed fan, though I swapped the fan for one with bus timing indexes. I have an AN 1800 engine and there are subtle differences between this, the 1700 and the bus engines I have
is that plug actually melted or is it just covered in crud? wonder what caused the rocker to come loose?? has it pulled the stud from the head or has it loosened out?
Yes, the electrode has melted. Thr right hand rocker shaft has sheared clean off. The left one has worked its way loose, I guess as a result of the right one flapping about
blimey! you were lucky there i recon. maybe just a stress thing. never seen a rocker stid shear without something serious going on with the rods and valves (bent bits!)
Do you reckon that that stud could have been overt tightened then when it got hot instead of pulling its sheared?
It was torqued down correctly, however, I had issues when I first put this engine back together. It had washers behind some of the rocker assemblies, it was also fitted with swivel adjusters. I just could not get decent clearances adjusted up. So I swapped out the adjusters for standard screw in type, removed the washers and it all went as it should. The rockers were all torqued up correctly. However, I now have a nagging feeling that was the start of the issue. Closer inspection of the heads around the rockers they appear to have had slight milling on the heads where the rocker assembly usually sits flush. I'm guessing now which is why they had washers/spacers installed. Until then it hadn't missed a beat. I can't stress enough though, we drove there at motorway speeds, I thrashed the arse of it up the strip 6 times, then drove at motorway speeds home. I'm to blame, my enthusiasm and ignorance for not giving it a better break. Lesson learned...
Just bad luck I reckon. Or it got too hot. I used to drive my 1700 like I was on the strip and it didn't break.
