Originally Posted by bayview
If you currently (6bt) dont have an aftercooler dont add one. I dont know what other changes would be necessary if you removed the cooler from that cheap engine.
Why would your old trnny not work with the new engine?
I don't sense much enthusiasm here for the NOS 6bta option, but I haven't ruled it out yet.
- although 26 years old, never installed. Owned by a marine mechanic and run from time to time on the bench.
- have been thinking about transmissions and would be comfortable using my existing VD 72. It's a little light for this motor, but I'm really not interested in going fast. I would not change my prop, and would be a little underpropped with the 6bta (250 hp vs my current 210) but that's perfectly ok with me, given everything I've read about the B series.
- yes there is an after cooler but it's coolant cooled rather than raw water cooled, which makes it less undesirable I think.
So essentially I go to the bta but with no intention of taking advantage of the extra power.
I've read that one of the issues with this motor was the fuel pump being stressed at high power output, but again I think my usage would not call for high power.
Am I missing something? What are the objections? It would appear that this option would cost about the same as a comprehensive rebuild of my existing motor.
Thanks for all the comments.