Can someone please explain to me the internal alternator conversion!!!!

Probably not an issue on a new alternator, but you might double-check the air intake on the rear of the alt, and that the fan is moving air.
o No:

 

Great thanks. The out put wire is a 10 or 8 ga from the back of the alt to the battery.

At idle the voltage is about 13-14 volts.

It has a brand new battery.

 

i was told a too tight belt could be a problem so i bought a larger one and still this alt is running hot!

I cant even touch it.

Can it bee that i need to beef up the wire from the batt to the alt? it an 8ga right now?

or is there something more serious? i dont want to fry this alt and i cant get it to not touch my water hose and it is slowly melting it.

 

In the mean time stuff a pop can between the alt n hose.
will provide a barrier for the heat till ya fix it.

 

good idea will do.

no insight as to what it might be other than the ground strap eh?

 

Do the wires get hot also???

If it is the wire it should get hot too. Grabs em both n feel for heat.

And yea you shuold have that ground strap on there, reguardless.

 

8 gauge wire should be plenty. Have you confirmed clear airflow through the alternator case? It goes in the back and out the front.

I don't know, sounds like either lack of airflow or it's being overworked.

I think I'd pull it and head for a place that rebuilds alternators, see if they can get it hot on their bench and see what's up.

 

hmm thanks. the alternator is in the stock position, my old one never got that hot.

Although they are two completley different alternators.

ill have to check on the wires getting hot.

 

Unless you ended up with a ccw fan off a corvair or honda...or have a small bird stuck in the alt,it's not an issue.It could be a low output alt & your pushing it's limits at full output due to accesories

 

If I put the suction hose from my vacuum cleaner, attach it to my shop air compressor filter housing, run it over to the alternator, will it capture the NOS blue smoke?:grin: If so, where is the re-charge port fitting? I gotta know! :idea2:

 

After this conversion a few months ago, my alternator blew this past weekend. Its been running suspiciously hot since i did the conversion. I replaced a broken ground strap on the engine.

I even added a ground wire from the alt to the engine block and its still running fairly hot. hot enough to where i CAN NOT keep my hand on it very long.

Should i beef up the wire from the batt to the alt? i think its a 10 or 8 gauge.

Im scared that if im cruising around that this new one is going to blow next. Ill try and snap some pics of the connections hopefully someone can help out ray:

 

Heat is usually a sign of resistance when dealing with electrical stuff and bigger gauge wire is most often the cure for that. Not gonna hurt anything to go bigger.

Remember a ground should be as big or bigger then the feed and as short as possible.

 

Great ill thry beefing it up.

Thanks

 

can bad timing cause the laternator to overheat?

pics coming

 

here is the si alternator connected with the red poser wire and a black wire running to the battery. There is also a pink ground wire


Next: i have the white wire from plug connected to the black wire and the blue wire to the red plug wire


Wire to battery, currently its an 8ga wire


old ext. regulator connection that is now jumped Blue wire to red, black to yellow


is this all correct? Did i perhaps do something wrong to cause it to overheat?
could it possibly be that if i remove the wire from the alt to the battery that it will cause it to not overheat?

Please help i want to cruise care free

 

ttt

 

I assume you couldn't find red wire so all your + stuff is black now???

Id lose the jumper stuff, not sure why ya have two? [trying to keep stock gauges as is??]

Here is how its wired on my 80.

Red wire off the back of the alt goes right to the battery + cable connection. The red wire on the 2 wire conector goes to the connection on the back of the alt too, [it just needs 12V since it goes to the battery... ]

Other wire disapears into the harness like yours.

 

"The red wire on the 2 wire conector goes to the connection on the back of the alt too, [it just needs 12V since it goes to the battery... ]"

im no sure what you mean since then the blue wire is connected to nothing which then jumps to red then bearks the charging.

as it looks now, it seems the blue wire is putting out from the alt around to the red which is then feeding back into the alt (i think this might be the issue)

damn now im confused.

 

I can't tell if your alternator is wired correctly because I'm confused about the wires on the output terminal. You have a red wire with yellow connector, and a black wire both connected to the alternator output. The black wire goes to the battery (???) but where does the red one go to?

The external-regulator connector harness jumpers seem OK, as do the two wires connecting to the internal regulator.

If the alternator is hot--it's got poor sensing of voltage OR it's defective OR you have a defective battery OR you have too much electrical load on it.

FIRST GUESS: You have poor connections between the alternator output terminal and the heavy red wire at the external regulator connector. Next on the list would be poor connections between that red wire at the external regulator connector through the short jumper wire, through the blue wire and then into the red wire of the alternator internal regulator pigtail. Basically, high resistance/bad connections anywhere in the voltage-sensing circuit will force the alternator to over work and overheat.

Let's start with three voltage tests:

1. What is the voltage at the battery with EVERYTHING turned off, including the engine? (Battery Open Circuit Voltage--OCV) (Better be about 12.7 or so)

2. What is the ALTERNATOR OUTPUT voltage at fast idle with everything electrical turned off except the ignition? (14.2 is about ideal, but anywhere from 13.5 to 15.5 is pretty acceptable.)

3. What is the voltage at the red wire connected to the internal regulator pigtail at fast idle with everything electrical turned off except the ignition?
(better be within 1/4 volt of #2)