To qualify Howards statement above 969 has been leading me a merry old dance.
Prior to figuring out what is wrong with the top end of the engine I decided to take a look at some of my leaks; first one was easy leaky diff casing. Made and fitted a new gasket. The gaskets on the market are way to thin, the bolt holes in the diff cover swage out over time and the thin gaskets don't take up the gap.
I had an hydraulic fluid leak underneath, I had changed the slave cylinder following the first leak so it wasn't that. And there were no leaky brake lines. It turned out to be the clutch master cylinder leaking inside the car. Fluid running down from the back of the clutch pedal and coming out via one of the tunnel screws.
The master cylinder was NOS, as ever mouldy rubbers. So I rebuilt the master cylinder.
When I came to bleed the clutch it bled but the piston wouldn't thrust, then I spotted it. The back of the slave cylinder carrier was going "up & down" instead of the piston going "in & out". The rear bolt on the slave cylinder carrier had pulled its thread.
So, out came the gearbox & both "slave carrier" bolt holes were fitted with steel inserts. You can see the "inserted holes" here. Compare with the rear ones that just screw into the aluminium casing.
Gearbox put back in ......... Cautionary tale here. Once back in the gearbox was locked solid. When I put the top back onto the gearbox I had stupidly not checked that the "reverse gate" was relocated. It had dropped into reverse while in 1st, hey presto gearbox locked. You can see what should go where here. If you ever have the top off of your gearbox make sure "the reverse gate is slotted in".
So out came the gearbox again sort out the "reverse gate" gearbox back in again.
Sorry tale this; I now find that the lower bolt holding the exhaust downpipe support bracket has a pulled thread.
No choice but gearbox out again and off to get another steel insert, rear extension had to come off this time.
And the offending hole, the one with the missing thread is the one with no bolt.
I'll get this insert tomorrow, get the gearbox back in and then maybe I can sort out the engine issues.
Mart, one for you; no date on the side of this casing bit I do have 01/ 73 neatly stamped just next to the clutch release arm.
Anyway hopefully I can get on with the engine later this week & drive this thing.