.
Well been getting on with JIL's bottom end assembly, but looking back, this was the start of it going back to page 12 of this thread... yikees, where has the time gone!
MFaulks wrote:.
... back to engines...
1. 3ltr even-fire bottom end, later stronger 24V rod and fastener, 24V n/a piston machined to a flat top, and shorted pin with aluminium spacers giving a much reduced reciprocating mass. So a tweaked OE bottom-end that I have enough spares, so no cry if it breaks. The block is of the oil squirter variety, and this chosen mainly to keep the OE pistons within their thermal limits on long full power runs. Liners and pistons all machined, deck honed, and a piston ring set has been made up to ensure good ring seal with sufficient thermal capacity to be pushed into forced induction duty. This will be topped off with modified 3ltr heads and a roller cam setup. So it should be yum yum... and then possibly bang, but you've got to have an oil pan failure every so often to know you are alive!
The 3ltr is getting a twin AP Racing clutch basket and a modified OE flywheel, as there is no expectation of road manners...
Cranks off being machined and balanced to their respective assemblies, the rest of the bottom end assemblies have already been completed.
etc...
Well that was the parts for JIL's engine, and finally it is starting to come together. Built the bottom-end assembly with Clee up at RATS the other weekend, leaving some more head work to finish off, but largely the bulk of it is coming together now. Compressor for the turbo has been sleeved to the Garret turbine, to make up another faulksie hybrid combo, back plate machined and dry build to make sure the assembly all goes together and this is now off for balance.

The 3ltr block is from a Z7X, and interesting note that the casting has been changed to add material around the cylinder head fastener threads, now no longer open but blind.


Oil squirted block… help the OE cast pistons survive an endurance event, as above, 24V n/a pistons being pressed into turbo duty, crowns now machined flat…



Machining work on new valve guides completed, material selected for the additional heat loading to give the valves and seats an easier time.



On a separate note, I have been looking at some other compressors to hybrid, prompted by John Wheeler, and this little compressor is pretty capable unit, CNC machined. Further, by the looks of it, could be made to work with a T3 shaft, and indeed, without too much loss in efficiency may even go in a Super 60 or 50 trim cover… now there’s one to try, so anybody up for giving it a go / test?

Compared to Darren’s old cream crackered Super 60 trim unit to give judgement of size…




Take a bit of work, but could be done. I might sort a turbine of the plain bearing type to be able to make up a suitable hybrid, and need a suitable patient to try it on… any takers?? I think this would be quite interesting…
Cheers,
Martin