This is the original GM generator that came with my Nailhead, I've had it rebuilt a couple of times over the years. I've started to get a drip or three of this yellowish, waxy stuff on the frame rail just below the generator. It's mounted outboard of my grille shell, and this usually occurs after a long, hard run. Have you ever seen anything like this?
Is it a dripless grease? No matter what it is, it comes out just before the smoke! time to pull it and get it checked out. It gets more expensive when they have to put new smoke in.
Wolfcreek-Steve is right. Grey smoke is whats inside all kinds of electronics, dynamoes and generators. When it comes out, they are ruined, Lars
Smoking the field coils will do that every time, some have the coating on them, some have them wrapped and sprayed with glyptal
Thanks for the response. I'm gonna go with Chris... it still charging fine, and it seemed to occur after long runs in warm weather, so I'm hoping it's just shedding some unseemly fat. No grey smoke, yet.
Why take a chance?! Either take it apart and check it out or have a professional look at it. Beats being stranded or burning something up. Just sayin'.
I use Ford generators converted to 12V on my flatheads as well as GM generators on my 283. I rebuild them myself and have yet to have any problems...knock on wood...but, since I'm a paranoid old fart who doesn't want to be stuck on the side of the road, I carry a spare generator and matching regulator on long trips for each car I'd keep a close eye on the drips. Might even open the case up to see what's dripping....That would only take an hour or so and then you'd know.
I'm a semi-paranoid old fart myself and the above advice seems good to me. Nothing like being caught out 1-200 miles from home and trying to find a generator in this day and age. You can buy an alternator a any drug store these days...................not so with a generator. Frank
Every spring I spend hours opening up parts that AREN'T dripping just to see why they are dry. I'd think you could check out this generator pretty easily.
Sounds like you are melting the shit off the field coils from overcharging due to the regulator not kicking out at full charge. Keep it up and you will be a FORD.
I agree this is probably an over worked generator from a regulator malfunction. I worked at a motor repair place and most of the time, a little preventative maintenance would have saved the customer most of what he spent, getting the smoke put back in. It's your decision!!!!!!
I agree with Wolfcreek on this. Check out your regulator and have your generator checked to be safe. Once you start melting your varnish on the windings you run the risk of letting out the magic smoke. Ounce the smoke is out it gets more expensive to fix.
I rebuilt my voltage regulator in my 41 buick to 40's plymouth repair book . That made the generator charge max had to tone it down a little bit on the limit .testing while running and after shut off testing should give ideas if it is maxing out the charging abilities - that is what I had to do. Posted using the Full Custom H.A.M.B. App!
Hey, thanks for the additional response. I'll go back in and take it apart, and check the regulator output, too.
Runnit til it drips, then hop out and lay your hand along the side of the generator. If you hear screaming and smell burning bacon, the fields are hot.