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Alternator pulley


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#1 henry57

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Posted 29 March 2018 - 08:22 PM

I have seen in the LH parts book that there are 2 different size alternator pulleys - 2” and 3” for V8 Torana’s. Is the 3” identical to LJ XU1?

#2 grumpy xu1

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Posted 29 March 2018 - 09:29 PM

I have seen in the LH parts book that there are 2 different size alternator pulleys - 2” and 3” for V8 Torana’s. Is the 3” identical to LJ XU1?


Is it the same number in the parts book ? That would answer your question straight away.

#3 Bazza

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Posted 29 March 2018 - 10:23 PM

I have seen in the LH parts book that there are 2 different size alternator pulleys - 2” and 3” for V8 Torana’s. Is the 3” identical to LJ XU1?

 

According to the LJ parts book there are 2 different ones for the XU-1. One for use without internal regulator and the other (P/N 2825063) for use with internal regulator. P/N 2825063 is the one required for the 5 litre V8.   I have no idea what the difference is between the 2 XU-1 types.

 

Bazza



#4 lx308

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Posted 29 March 2018 - 10:36 PM

So when was the internal regulator introduced on the LJ?



#5 Kockum

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Posted 30 March 2018 - 09:48 AM

2806231 pulley has the Woodruff Key slot.

 

2825063 pulley does not.

 

The '410 ' pulley fan that all XU1 models and many other Holden models use has a Woodruff Key slot .

 

Not all 7430410  fans are stamped '410 '.



#6 crabba67

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Posted 30 March 2018 - 12:08 PM

The UM wiring loom was used with the bosch external reg alternator 679 and pulley 2806231 form 1/72 to around the 5/72........and LC xu1's CK

 

 

The AG wiring loom was used with the lucas internal reg alternator and pulley 2825063  from around 5/72 to xu1's completed in the 12th month 72 but plated 11/72.

 

 

The JG wiring loom for 1973 (amber front turn signal) was used with lucas internal reg alternator and pulley 2825063 this is also the loom used on late xu1's fitted with extractors with extra wiring harness.

 

 

All information parts catalogue M37608 supersedes M37127.

 

My 8/72 lucas alternator  cheers

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#7 lx308

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Posted 30 March 2018 - 01:21 PM

Thanks Crabba



#8 grumpy xu1

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Posted 30 March 2018 - 06:52 PM

The UM wiring loom was used with the bosch external reg alternator 679 and pulley 2806231 form 1/72 to around the 5/72........and LC xu1's CK

are you talking Adelaide cars there ? Mine 9/72 brisbane has a bosch external regulator, white parkers & not "um"
 
 
The AG wiring loom was used with the lucas internal reg alternator and pulley 2825063  from around 5/72 to xu1's completed in the 12th month 72 but plated 11/72.
 
 
The JG wiring loom for 1973 (amber front turn signal) was used with lucas internal reg alternator and pulley 2825063 this is also the loom used on late xu1's fitted with extractors with extra wiring harness.
 
 
All information parts catalogue M37608 supersedes M37127.
 
My 8/72 lucas alternator  cheers



#9 henry57

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Posted 31 March 2018 - 11:58 AM

So according to the parts book for the LH Torana

8 cylinder engine 2 1/4"?     2825019

5 litre engine 3 1/8"?           2825063

So it would appear that the 5 litre is the same as LJ XU1. Most cars which I see have the smaller pulley on them.



#10 grumpy xu1

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Posted 31 March 2018 - 05:42 PM

2806231 pulley has the Woodruff Key slot.
 
2825063 pulley does not.
 
The '410 ' pulley fan that all XU1 models and many other Holden models use has a Woodruff Key slot .
 
Not all 7430410  fans are stamped '410 '.


So just to clarify what you are saying, are you saying early xu1 up to late 72 use a woodruff key ? May i ask where you got this gmh information please ?

#11 hanra

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Posted 31 March 2018 - 07:29 PM

Interesting. What does the larger pulley do for things?

#12 Bazza

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Posted 31 March 2018 - 07:44 PM

Interesting. What does the larger pulley do for things?

 

Slows down the rotating speed on the alternator.

 

Cheers

 

Bazza



#13 henry57

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Posted 31 March 2018 - 07:45 PM

Because XU1’s revved higher than other Torana’s, they put a larger pulley on to slow the alternator down. Not sure why the 5 litre V8 has a larger pulley.

#14 grumpy xu1

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Posted 31 March 2018 - 08:25 PM

Interesting. What does the larger pulley do for things?


Basically for the reason not to burn the alternator out, from the high rev range !

#15 Kockum

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Posted 31 March 2018 - 08:55 PM

There is no documentation that I possess.

All these pictures have been on the forum before photobucket shot itself in the foot.

 

These are all 2825063.

 

I am working on someone who has a 2806231 on a bosch alternator that has never been serviced. If they come to the party then I'll put up a picture of this pulley.

 

 

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#16 hanra

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Posted 31 March 2018 - 09:26 PM

I never gave any of this any thought when I had my alternator rebuilt. The auto elec used the old case to put a new higher output alternator inside of it. No idea if it was the original alternator to begin with however??????

This is what I ended up with.

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#17 grumpy xu1

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Posted 31 March 2018 - 09:56 PM

There is no documentation that I possess.
All these pictures have been on the forum before photobucket shot itself in the foot.
 
These are all 2825063.
 
I am working on someone who has a 2806231 on a bosch alternator that has never been serviced. If they come to the party then I'll put up a picture of this pulley.


Because i don't believe that i will ever be able to see a picture on this forum ever again, could you please tell me if your saying That the xu1 up until late 72 uses a woodruff key or not please mate ?

#18 Kockum

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Posted 31 March 2018 - 11:28 PM

Ok then.

Yes that is - Bosch XU1 have the slotted pulley for the Woodruff key.

 

Lucas XU1 pulley is not machined for the Woodruff key .



#19 grumpy xu1

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Posted 31 March 2018 - 11:44 PM

Thank you

#20 arrimar

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Posted 01 April 2018 - 09:23 AM

Because XU1’s revved higher than other Torana’s, they put a larger pulley on to slow the alternator down. Not sure why the 5 litre V8 has a larger pulley.



The 5 Litre doesn't use a larger pulley unless its the L34 option. The parts manual is inconsistent in its usage of the terms 5 litre and L34.

#21 henry57

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Posted 02 April 2018 - 10:06 AM

Thanks Arrimar. That's the answer I was looking for. So an SLR 5000 didn't have one? It's to go in an L34. That explains why they are rare. So it seems they put the bigger pulley only on the high revving cars.






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