set up is a pretty rusted out marinised Isuzu UM 3AB1, Velvet Drive 71 trans and a Walter RV10D Vdrive. Major problems are: exh manifold rusted thru to water
jacket. Lots of bolts are so badly rusted that they break the heads off when I try to remove. Alternator
is very suspect and so is the starter.
The trans is ok and Ive rebuilt the Vdrive with new bearings and seals
I have a couple of questions about the rebuild
but I'll put those in another post.
I can get a second hand 3AB1 in reasonable condition externally but it is not marinised. I would do a comp test at the minimum.
I can also get a nice nearly new turbocharged Kubota 1505 T but not marinised.
I understand the concept
of the devil you know and stay with the 3AB1 as it will be a drop in replacement. (almost) However, I kinda like the idea of a new turboed engine
The main questions I have are: How do I marry up the Kubota or another brand of engine
with the velvet drive trans? What hardware
What are some considerations in using a dry exhaust
manifold? There is plenty of clearance to the engine box on the exhaust
side but I plan to wrap the manifold with exh tape. There is an existing exhaust blower in the engine bay which will help with heat.
Thanks very much in advance to a very helpful forum.