Here qwe go veviving a six year old thread! But hey it aint too long of a thread and it's right on topic:
I have recently bought a 1989 90 that was once a 2.5 TD but had the SD33 (N/A) conversion done to it at some point. It has a short shaft LT77 box. All the electrics are 12V BTW. My current problem is trying to figure out what they did in the conversion. Firstly, there's a bad vibration from the bellhousing area when revving the engine. I split the engine from the box and sure enough the flywheel wasn't running on-centre. It seems that they have used the LR flywheel, got it drilled for the 8 bolts into the Nissan crankshaft, and then had to use two lipped spacers to mount it the correct distance from the crankshaft. The first of these spacers was merely tacked in position and was off-centre. I have tried re-tacking it with limited success so far. I have also made up a bush that sits into the flywheel centre hole and snugly fits into each spacer in a hope that this would centre everything up.
Also, for some reason they have put a roughly cut 8mm plate between the adapter housing and the engine. I'm not sure what this is doing exactly other than spacing.
Has anyone on here done these conversions knowing what's involved and possibly how I might fix my vibrating flywheel? Thanks in advance!
For anyone interested in info on the SD33 (as fitted to the 160 Patrol) this site has loads of information:
http://nerok.info/engine/sd33/index
Vinny