| 
								 | 
							
								
  | 
							
								
  | 
						
								
  | 
						
| 
			
			
			
			 Registered 
			
			
		
			
			
			Join Date: Aug 2007 
				Location: San Diego, CA 
				
				
					Posts: 148
				 
                
				
				
				
				 | 
	
	
	
		
		
		
			
			 
				
				alternator compatability
			 
			
			I have been gathering parts for my '67 912 6cyl conversion. 
		
	
		
	
			
				I bought a 2.4 e long block and have been sourcing parts all over to complete the project. I have an alternator that appears to be from an newer car. It has the double pulley. Will this work with my car? Does this setup still need shims? I believe it may be a different diameter. Would a smaller pulley give an advantage of spinning the fan faster?  | 
||
| 		
			
			 | 
	
	
  | 
| 
			
			
			
			 Registered 
			
			
		
			
			
			Join Date: Aug 2007 
				Location: San Diego, CA 
				
				
					Posts: 148
				 
                
				
				
				
				 | 
	
	
	
		
		
		
		
		
		 
			Having trouble identifying my alternator.  Despite many searches I am not sure which model I have.  There are no identifying marks on the unit.  I understand that I need an external regulator of the same brand to make things work. Any advice?
		 
		
	
		
	
			
			
		
		
		
		
		
		
		
	
	 | 
||
| 		
			
			 | 
	
	
  | 
| 
			
			
			
			 Moderator 
			
			
		
			
				
			
			
			Join Date: Dec 2001 
				
				
				
					Posts: 9,569
				 
                
				
				
				
				 | 
	
	
	
		
		
		
		
		
		 
			Post a picture of alternator.  Double pulley =964, inappropriate for your car, you want a 35 amp bosch or 55amp motorola, search here for pics
		 
		
	
		
	
			
			
		
		
		
		
		
			
				__________________ 
		
		
		
		
		
	
	'66 911 #304065 Irischgruen ‘96 993 Carrera 2 Polarsilber '81 R65 Ex-'71 911 PCA C-Stock Club Racer #806 (Sold 5/15/13) Ex-'88 Carrera (Sold 3/29/02) Ex-'91 Carrera 2 Cabriolet (Sold 8/20/04) Ex-'89 944 Turbo S (Sold 8/21/20)  | 
||
| 		
			
			 | 
	
	
  | 
| 
			
			
			
			 Registered 
			
			
		
			
			
			Join Date: Aug 2007 
				Location: San Diego, CA 
				
				
					Posts: 148
				 
                
				
				
				
				 | 
	
	
	
		
		
		
		
		
		 
			Can anyone tell me what model alternator this is? 
		
	
		
	
			
			
		
		
		
		
		
		
		
	
	 
		 | 
||
| 		
			
			 | 
	
	
  | 
| 
			
			
			
			 Registered 
			
			
		
			
				
			
			
			Join Date: May 2003 
				Location: Manhattan Beach, CA 
				
				
					Posts: 2,350
				 
                
				
				
				
				 | 
	
	
	
		
		
		
		
		
		 
			"Can anyone tell me what model alternator this is?" 
		
	
		
	
			
			
		
		
		
		
		
			It's a 911SC 70 amp Marchel. It's been rebuilt (attempted by someone), as some of the wire clips are missing and has been sandblasted. 
				__________________ 
		
		
		
		
		
	
	Have Fun Loren Systems Consulting Automotive Electronics '88 911 3.2 '04 GSXR1000 '01 Ducati 996 '03 BMW BCR - Gone  | 
||
| 		
			
			 | 
	
	
  | 
| 
			
			
			
			 Registered 
			
			
		
			
			
			Join Date: Aug 2007 
				Location: San Diego, CA 
				
				
					Posts: 148
				 
                
				
				
				
				 | 
	
	
	
		
		
		
		
		
		 
			So which external regulator do I need?  Pelican shows two options Motorola 70amp, and a Marchal 55W.
		 
		
	
		
	
			
			
				
					 | 
||
| 		
			
			 | 
	
	
  | 
 
 |