After a long hard week of toil, oil, sweat and blood, the engine is IN.
The old engine slipped out fairly easily, not much to report there other than it still looked like the day I fitted it.
I replaced the clutch friction plate, despite it being in good condition, the clutch release bearing was replaced with a HD version. I bought a HD clutch release fork but it turned out mine was a cast item anyway, so that was returned.
I'll post a few photos and let them do some talking;
Old engine out, new engine waiting to "slip" in.
That's the engine "slipped" in and cam lubed.
I then set the lifter pre-load with shims, primed the oil pump and bolted in the manifold.
Then the "fun" of fitting the LPG and the petrol injectors, all the ancillaries and belts (it was around this point I wished I'd gone with serpentine).
I was pleasantly surprised that it started first time, so I bedded the cam in (thankfully no water leaks and the electric fan worked well) and then timed it slightly better before putting it away for the night.
The following morning (it's taken from Monday to Friday by now) I took it out for a test drive, followed by a longer test drive, being very conservative with the fast-pedal, keeping the revs below 2500.
A little tidying left to do and aircon to refit. It's a shame it still says "3.9" on the engine but it looks original I guess.
Initial feeling is that the engine has a load more torque, just need to get the engine run in before I can open her up and see how well she goes
It also seems much smoother and idles a lot better, slighlty quieter too, although I'm sure that's just me. It does sound sweet on tick-over.
I also need to look at re-chipping the ECU. I'm going to replace the fuel-chip with a Mark Adams Tornado ECU chip and a "best guess" map for the mods I've done, also replacing the AFM with the later 20AM version. This is a tried and tested approach taken by a lot of TVR owners, TVR even sold Marks Tornado ECU to owners as an upgrade.
At a later date I may go either megasquirt or perhaps GEMS, depending on how good the MA chip is.
At the moment it all looks very original under the bonnet, that would change with both Megasquirt or GEMS.