3 g Alternator mounting

[rwood126]

I bought a 89 vert. 2 years ago...and the 3G conversion had already been done. I just had to replace the alternator and noticed the top bolt was not mounted to the tensioner bracket. I put the new alternator in and there is no way I can get the top bolt to mount. It is off by 1/2 inch. Do I need to buy a new model tensioner to mount the alternator the right way?

 

[jrichker]

The mounting for a 94-95 3G is a direct fit: you only have to use a longer bolt and a nut to make it work.

Edit: Mustang5L5 is right, you will need to grind or cut a small amount of metal off the stock mount to get enough clearance to make it fit correctly.

See http://www.mustangcentral.net/tech/alternator.html for the pictures on how much and where you have to trim the stock bracket to get it to fit correctly.

 

[Mustang5L5]

You might have to modify the alternator bracket slightly by removing some material where the casing contacts until the bolt hole lines up.

Or you can get a 6g alt which has a smaller case

 

[Stever89]

Who ever did the conversion didn't finish the job. I suppose he figured the belt tension would keep it place which it does, but I'd go ahead and grind away that area on the bracket and put the bolt through. I actually took the whole bracket off, took it in my shop and put a bench grinder on the area that needs to be ground off. Took about 5 minutes.

Be advised, moving the alt in a little will change your belt's tension. Hopefully it won't mean getting a smaller belt.

 

[rwood126]

Yeah ..the case is hitting the bracket. I guess I'll have to break out the drimel. What is the 6G Alternator from?

Thanks...

 

[time only]

I just used different hand files,easier for me to control,plus it is very soft Alum anyway.

 

[HISSIN50]

Yeah, a dull butter-knife can slice through that bracket.

6G's came on later mod motor vehicles.

 

[Vinnietbird]

Yeah ..the case is hitting the bracket. I guess I'll have to break out the drimel. What is the 6G Alternator from?

Thanks...

That's how I did it,the Dremmel made short work of it.