Just wanted to give all a follow-up on what eventually happened to this Odyssey. Turns out the water pump that I put on this motor had a DISTROYED implellor. Did not matter how i jetted the Mikuni as it overheated and melted pistons. I have a few ash trays since my last post.
The net result of what I've done now is:
1. Added a Spal PWM fan controller and made it control the water pump speed
2. Added a relay controlled by the Spal to turn the electric fan on and off a needed, based on engine temp.
3. Added my own custom air cleaner (Uni foam element) set-up that has a 3" aluminum tube. I found an outfit that makes the transitional rubber transition fitting from the air cleaner tube to the carb. I also found on-line the best clamps to keep every thing tight, instead of the usual worm drive clamps
4. Re-jetted to a 480 main, 60 pilot and have the needle set in the middle groove. What is interesting is that this motor now has 8-10
5. Did some basic restorations, new starter, new water pump (Ford intercooler pump) all new cables, new battery (AGM), took the driven clutch apart and replaced the little shoes/lubricated, replaced the axle bearings
6. I was just letting the overhead tank gravity feed to the carb before but opted to add in the stock pump. At first it over-fed the carb with pressure so I added the bypass line to the filler neck. Randy from Odyssey Salvage has said at long full blast runs the carb will run out of fuel and you will melt the piston if you do not run the pump.
I have taken it up and down the street, really seems to run strong. I will be doing plug chops on my next outing to refine the settings as needed.
I have added sime photos at
https://picasaweb.google.com/richpaulsonster/1985OdysseyPics# to show the new air cleaner set-up.
All for now
Rich