Alternator, signs of melting

[virden]

A "96 C/F with 4:1 manifold.

Earlier in the year I spotted a sticky goo on the lower rear of the alternator, I have now taken it out of the car and find that the goo is the melted contents of whatever they used to pack the small, square finned box (held on by two screws) on the rear face beside the connectors. Is this a potentially terminal condition (sorry) 😬, or can I simply ignore it? If I make up a small heat shield to fit over the box will that help?

[virden]

Update, I have decided to ignore it and have made up a small heat shield, so hopefully that will be it?

[Nigel Riches]

Hi Virden.

Certainly doesn't look good.

The "goo" is put there for a purpose (to hold the components in place) so probably best to replace the item, regulator, I think, with a new one, and make a heat shield to protect it.

You have been lucky it didn't spit the dummy earlier.

Regards, Nigel.

[Jonathan Kay]

What's the charging voltage at 3,000 rpm?

 

Jonathan

[Myles]

I melted the back of my k-series alternator when I put a new engine in. The alternator continued in service for a good many years, but ultimately wasn't healthy.

 

I suspect that if you've got signs of melting, the damage may be done - but do check the output as JK suggests. Also look around for other items in the area that could benefit from heat shielding now rather than later...

[virden]

Thanks guys, I shall check the voltage next week.