Think this is due for an update!
So I discovered that the rocker cover breathers were a source of vacuum leak and possibly the PCV, which I believe was the cause of my occasional lean condition at idle. To fix this I fitted some push in -10 alloy breathers (bought off Interloper on here) and 90 deg. push lock fittings. These currently tee together but will eventually be run separately to an alloy catch can. And I replaced the PCV with a new OEM one.
End of last year I pulled out the RB20 gearbox and ordered an NPC ceramic button clutch and lightened flywheel, I expected them to arrive within a week but it ended up taking almost two months!
This gave me plenty of time to fit a B&M electric line locker...sorry I mean "launch control" And HEL braided brake lines. To be honest I was a little bit disappointed with the front brake lines as they use plastic fasteners where they are secured to the suspension upright, which poorly replicate the standard Nissan fasteners and as a result aren't very well secured, in hindsight I would have replaced with new genuine rubber brake lines.
I also got rid of the clutch "dampener" loop and replaced with a single braided line from clutch master to slave cylinder.
Eventually the clutch and flywheel turned up and both were fitted along with ARP flywheel bolts. The RB25 gearbox was then mounted, the standard gearbox mount modified to suit, and RB20 tailshaft yolk replaced with RB25 yolk. At the same time a new OEM slave was fitted and Nismo solid shifter. To retain the standard speedo I used the well documented method of fitting the RB25 speedo drive gear to a Navara speedo drive (new from Nissan at ~$60), and lastly the reverse and neutral switch plugs were replaced with the corresponding RB25 ones (I was pleasantly surprised to find both of these available new from www.wiringspecialties.com, but prepare to pay for them!).
You will probably notice in the next photo that I had to space the mount down 10mm,
because the gearbox hit the top of the tunnel. I will probably remake this at some point a slightly different way to get rid of the spacers.
It was pretty exciting to drive it again, and even more exciting to discover that everything worked as it should!
I got a few weeks of driving out of it then today I discovered the inlet manifold cracked AGAIN, this time on the underside. So off it came (I'm getting pretty good at this now!) and I took it back to get fixed. After discussing the solution with the fabricator we're pretty confident it won't happen again.