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View Full Version : Melting hub inserts???


Deacon
10-08-2011, 02:38 PM
94 225 pro max power head on a 225 super mag 2 piece exhaust on a 19' 3" gambler. 2 hole low water pick up on a coned case. I'm running 3" below pad. 25 trophy. Spun hub and replaced with a new one Ran 13 mi. and melted it again at only 5600 and 56mph. What gives???Torqued to specs.....Thanks....
Lockjaw
10-08-2011, 06:06 PM
My buddy had the problem, he took it to Paul Nichols shop and they fixed it, but I have no idea what they did to it.
vnemous
10-08-2011, 07:35 PM
Is it possible that your poppet is stuck open or the diaphram is ripped and not cooling the leg. Is the leg discolored at all like the can is getting hot?
afr
10-08-2011, 08:31 PM
94 225 pro max power head on a 225 super mag 2 piece exhaust on a 19' 3" gambler. 2 hole low water pick up on a coned case. I'm running 3" below pad. 25 trophy. Spun hub and replaced with a new one Ran 13 mi. and melted it again at only 5600 and 56mph. What gives???Torqued to specs.....Thanks....

some times we would see the the hub hole would be out of round Dad would weld in some passes then press a new hub back in specialy with the square back hubs
Deacon
10-08-2011, 10:50 PM
I'll check the poppet but cant see any discoloration in the can. I also smoked a pressed-in hub a little while back.
Lockjaw if yuo could find out what the problem was with your buddy's rig I would appreciate it???? Thanks....
afr
10-09-2011, 07:14 AM
lets see the boat and the hub and what pitch is the prop and what does the boat weight
Deacon
10-10-2011, 05:04 AM
Boat weighs 1500. Would an exhaust ring help since the trophy is smaller than my big case???
Lockjaw
10-10-2011, 10:55 AM
He doesn't know, he just took it up to Nichols Outboard Engineering, and they did whatever they do. I'd call there and talk to Paul or Del. All I know is he would get up and running, and get 3 or 4 miles out of it, and then the hub would melt.
drm
10-16-2011, 05:02 PM
Water dump holes in adapter clogged up can cuase this. They are only 1/8th inch. Crazy but lower will get super hot on hard run at high rpm and melt the hub in the prop. Fixed it by pumping a muratic acid mix 25% solution thru the motor. No more problem Or you can pull tyhe power head for access to ream out the holes. Good Luck DRM