Alternator alignment !!!!
Thread Starter
Racer
Joined: Feb 2003
Posts: 331
Likes: 0
From: El Cajon CA.
Alternator alignment !!!!
65 vert..327/365...finishing restoration, put water pump pulley on today to ck belt alignment...Well, the idler pulley lines up with the inside groove of the engine pulleys (I think thats right) , but the alternator sits about 1/2" too far back (towards the fire wall) and so the belt is off by about 1/2" or so. Could it be possible that the shop that rebuilt my alt. put the wrong pulley back on ? OR does the 365 hp motor have a pulley with 2 grooves?? If I had one more groove that would give me the extra I need. I don't remember my alt. having a 2 groove pulley on it when I took it in. Nothing was changed on the motor during the restoration, the exhaust man. are the same, the brackets are the same etc etc Thanks for any help...
OR---- is it the idler pulley that out of wack ?? DOes the alt belt go on the inside groove or the outside groove??
OR---- is it the idler pulley that out of wack ?? DOes the alt belt go on the inside groove or the outside groove??
Last edited by Kurt G.; Oct 1, 2008 at 10:25 PM. Reason: more info..
Le Mans Master
Joined: Feb 2008
Posts: 7,876
Likes: 9
From: Toronto Ontario
<<<Snip>>> OR does the 365 hp motor have a pulley with 2 grooves?? If I had one more groove that would give me the extra I need. I don't remember my alt. having a 2 groove pulley on it when I took it in. Nothing was changed on the motor during the restoration, the exhaust man. are the same, the brackets are the same etc etc Thanks for any help...
OR---- is it the idler pulley that out of wack ?? DOes the alt belt go on the inside groove or the outside groove??
OR---- is it the idler pulley that out of wack ?? DOes the alt belt go on the inside groove or the outside groove??
Kurt, I have my original 1963 327-250 H.P. engine on an engine stand in the garage and I just checked it - 2 groove pulley on the alternator. Although, I honestly don't know if OE came that way.
- Pat
Le Mans Master
Joined: Apr 2001
Posts: 9,556
Likes: 288
From: Granbury Texas
Solid liftrer engines (365 aqnd 375HP) come with DEEP GROOVE pulleys. If you don't use them, you will lose your fanbelt every time you take it to high (6500/7000) rpm. Bottom line, your pulleys should line up.
Thread Starter
Racer
Joined: Feb 2003
Posts: 331
Likes: 0
From: El Cajon CA.
Thanks guys for the quik responses!! As usual, you are the best. I did find the correct offset pulley in my Paragon catalog, part #1648. And it looks to have just the offset I need. !! I guess the guys that rebuilt my alt. replaced my old pulley with a new shiny one. I guess that goes to show you, "take pictures of your stuff, and make sure it comes back just as you sent it out". Thanks again. 
