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damicotile
Samba Member
Joined: September 16, 2004
Posts: 1069
Location: WOODLAND CA.
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 Posted: Tue Sep 04, 2012 4:19 pm Post subject: Belt alignment issue |
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In a earlier post about a 36hp CB shroud I was having fitment problems. I ironed them out but ran into another issue.
The fan bely is out of alignment by 3/8".
The alt pulley is 3/8" towards the rear.
Has anyone ever made a spacer which would allow the crank pully to be shimmed out to correct the alignment of the fan belt?
Does someone make a spacer?
I was thinking of making one out of a stock crank pulley by machining 3/8" thick piece off the end of the pulley end that slides on the crank
Any thoughts?
_________________
'73 SB
82x94
W-120 w/ CB light weight lifters
Silicon bronze sleeves
Scat 1.25:1
CB H-Beams
Straight cuts
42x37 Steve Tims
44 IDF's
9.2:1
A-1 Sidewinder coated
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74 Thing
Samba Member
Joined: September 02, 2004
Posts: 7390
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vwracerdave
Samba Member
Joined: November 11, 2004
Posts: 15303
Location: Deep in the 405
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| Posted: Tue Sep 04, 2012 5:14 pm Post subject: |
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What backing plate are you using?
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damicotile
Samba Member
Joined: September 16, 2004
Posts: 1069
Location: WOODLAND CA.
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| Posted: Tue Sep 04, 2012 5:35 pm Post subject: |
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I'm using the stock backing plate for a 73 SB on a CB 36HP shroud and cylinder tins.
The CB tins are whats giving me the alignment issue, I know that for a fact. I just want to "mod" it to work. The shim kit only comes with 2 ea of .045 and .030 shims. I need 3/8" to bring it out to alignment with the alt pulley.
I swear, working on VW's have become such a fking PITA You have to mod every damn aftermarket part out there.
If we only had USA manufacturing back this might not happen.
I mean, how fking hard is it to get things made right.
I'm too old for this crap.
_________________
'73 SB
82x94
W-120 w/ CB light weight lifters
Silicon bronze sleeves
Scat 1.25:1
CB H-Beams
Straight cuts
42x37 Steve Tims
44 IDF's
9.2:1
A-1 Sidewinder coated
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skills@eurocarsplus
Samba Peckerhead
Joined: January 01, 2007
Posts: 16863
Location: sticksville, ct.
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| Posted: Tue Sep 04, 2012 6:07 pm Post subject: |
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gene berg use to make a shim that came with the eliminator pulley....i cant seem to find it on their 1991 website, but it looks like this, only it was for the crank
http://www.geneberg.com/product_info.php?products_id=808
i will keep looking
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damicotile
Samba Member
Joined: September 16, 2004
Posts: 1069
Location: WOODLAND CA.
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| Posted: Tue Sep 04, 2012 8:32 pm Post subject: |
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It's the crank pulley I am trying to shim out. It needs to come out 3/8".
What would really make my life easier is to have some true VW cylinder tins as these after market CB tins are whats causing the alt to be out too far.
Does anyone have a set of DP cylinder tins for sale?
_________________
'73 SB
82x94
W-120 w/ CB light weight lifters
Silicon bronze sleeves
Scat 1.25:1
CB H-Beams
Straight cuts
42x37 Steve Tims
44 IDF's
9.2:1
A-1 Sidewinder coated
__________________________________ |
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kreemoweet
Samba Member
Joined: March 13, 2008
Posts: 3898
Location: Seattle, WA
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| Posted: Tue Sep 04, 2012 10:53 pm Post subject: |
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If you're using the stock generator backing plates with an alternator, then the pulley will be too far to the rear, because
the alt. is longer than the stock 30A generator. When converting to the alternator, you need to also change the backing
plates, which are usually sold as part of a kit with the alt. In fact, the backing plates are the same as those used on early
bay busses that had the 38A generator, which was also about 1/2" longer than the 30A generator. You might also to need
the shorter fan hub.
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Busryder
Samba SuperHero
Joined: September 17, 2007
Posts: 1663
Location: In Your Face...
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| Posted: Tue Sep 04, 2012 11:20 pm Post subject: |
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| damicotile wrote: |
What would really make my life easier is to have some true VW cylinder tins as these after market CB tins are whats causing the alt to be out too far.
Does anyone have a set of DP cylinder tins for sale? |
I do... they're not advertised, but PM/gmail me to keep it outta here though. Sorry Everett.B...  .
But....
| kreemoweet wrote: |
If you're using the stock generator backing plates with an alternator, then the pulley will be too far to the rear, because
the alt. is longer than the stock 30A generator. When converting to the alternator, you need to also change the backing
plates, which are usually sold as part of a kit with the alt. In fact, the backing plates are the same as those used on early
bay busses that had the 38A generator, which was also about 1/2" longer than the 30A generator. You might also to need
the shorter fan hub. |
He is right about this 'bus generator length difference' though... ^^^. 
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damicotile
Samba Member
Joined: September 16, 2004
Posts: 1069
Location: WOODLAND CA.
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| Posted: Wed Sep 05, 2012 5:39 pm Post subject: |
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| kreemoweet wrote: |
If you're using the stock generator backing plates with an alternator, then the pulley will be too far to the rear, because
the alt. is longer than the stock 30A generator. When converting to the alternator, you need to also change the backing
plates, which are usually sold as part of a kit with the alt. In fact, the backing plates are the same as those used on early
bay busses that had the 38A generator, which was also about 1/2" longer than the 30A generator. You might also to need
the shorter fan hub. |
You nailed it right on the head.
I went to Chet and Cliffs garage and he set me up with the backing plate and hub and now all is right in the world.
Thanx RacerDave for suggesting the backing plate and Kreemoweet for enlightening me to the differences in the backing plates.
And all that pissing and moaning about the tins being the problem was for naught. Sorry Thailand.
I can build a fine motor but as far as the other stuff goes, I have a lot to learn.
Thats why I love The Samba.
_________________
'73 SB
82x94
W-120 w/ CB light weight lifters
Silicon bronze sleeves
Scat 1.25:1
CB H-Beams
Straight cuts
42x37 Steve Tims
44 IDF's
9.2:1
A-1 Sidewinder coated
__________________________________ |
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