Pulled a few things apart yesterday, so I could get in and retorque the head. All of the head nuts turned a good bit, so it did need it. At some point, I should perhaps find (or make) the funny offset spanners for doing that with all the manifolds and rocker shaft on, but for now it took dismantling.
In the process, I took the opportunity to put on a nice proper gasket.
...well, I tried, anyway. That's a 300/330 diesel gasket that I'm
trying to get to stay in place on a 300 petrol rocker cover. 
Tape used to hold it in place while the little smear of
silicone sets, desperately trying to retain it in vaguely the right
place.
Plopped it on today, the silicone hadn't fully cured, but enough had that the gasket stayed in place and I could draw the cover back down nice and snug. Made some little rubber washers to go up top, where the hold-down nuts are, too.
You can also really see where the thin exhaust gasket material blew out. I really do need to get around to making up the forms to cut the thicker stuff properly; but I do have some of that permatex copper hi-temp goop on order as a 'temporary' solution, because the exhaust manifolds have to go on before the intake, and I want to get the intake stuff sorted.
Speaking of the intake stuff... Time to do something else I've been putting off for too long, and make the last of the injector hold-down studs.
Which gets us to here:
And then the suffering really began! Even with the manifold runners extended out that extra inch (remember that, it'll come back to haunt us later), it's still very tight around that third injector. After a couple of attempts, I managed to come up with something that I only hate a little bit. Injector number 2 was easier, thankfully.
And, of course, after getting it all bent up, I had to polish the
pipework.
The lines for 2 and 3 are made of 5/16 kunifer brake line, which is a damn sight easier to bend than the stainless, but still a real struggle to get the neat tight bends I really wanted, especially with the bending tool I have which leaves quite a distance between the retainer and the bending die. (And it's a 1" radius bend, which never seems to land where I want it to!)
No matter, all the pipes are tightened up, and I finally broke the manifold free of the fixture plate to go fit it! At which point, it turned out not to fit as well as it used to.
For some reason, the close-up photo I have of the throttle-body end has come out entirely black, so I don't know what's gone on there, but the summary of it is: That 1 inch extension for injector clearance has run the front end of the manifold into the cab structure, to the point that the manifold will not fit with the throttle-body attached. (**internal screaming**)
I also have some questions about the fuel rail feed/return pipes and the amount of clearance to the exhaust manifold, but I think they should be easy enough to tweak.
I believe I have enough left-over material that I can cut & shut the front end of the manifold, to give clearance to the cab; it's a little annoying but these things happen. (If I were to do this again, I would probably put the injectors on the outside of the bend, then I could roll everything in further and gain more clearance.)
Still, I'm reasonably happy with how things are shaping up.
