70A alternator (AL108X) fan pulley

MadMax78

I recently bought a remanufactured Bosch AL108X 70A alternator on ebay for about half the price for which it's sold on several websites. However, this one came without the special pulley with fan blades on it. Sad

The pulley I mean is part 2A in the image below:

Image may have been reduced in size. Click image to view fullscreen.

I have been searching for it but couldn't find one, already tried busted bus, but they won't sell separate fans.

If anyone has one I could buy, or know where to buy one, please let me know.
_________________
1978 T2b ASI Riviera Plan I // Camper Special with MegaSquirt Injection & Ignition // 091 with 5.14 R/P and Peloquins LSD
Powered by Just Kampers, German Supply , Busted Bus, Aircooled Technology & DIYAutoTune
2008: Amsterdam - Beijing - Olympics -- 17.500km
2010: Amsterdam - Cape Town - FIFA World Cup -- 26.000km
2014: New York - Rio de Janeiro - FIFA World Cup -- 27.000km
http://www.oranjetrophy.nl
******************************************
Camper Special Club Member

old DKP driver · Posted: Thu Oct 25, 2007 6:32 pm Post subject: fan pulley

In the USA the fan pulley was only installed on the vanagon engines, maybe it's a rebuilt from an after market company.Will your old pulley fit the armature? But i have seen them sold for campers for the extra cooling. you might check busboys or busdepot.
_________________
V.W.owner since 1967

MadMax78 · Posted: Thu Oct 25, 2007 7:18 pm Post subject:

This one is different from the vanagon ones, those we're used to blow fresh air into the heater boxes, this one is to cool the alternator.

Bus Depot doesn't sell it, Bus Boys has it indexed on their site, but it's NLA.
_________________
1978 T2b ASI Riviera Plan I // Camper Special with MegaSquirt Injection & Ignition // 091 with 5.14 R/P and Peloquins LSD
Powered by Just Kampers, German Supply , Busted Bus, Aircooled Technology & DIYAutoTune
2008: Amsterdam - Beijing - Olympics -- 17.500km
2010: Amsterdam - Cape Town - FIFA World Cup -- 26.000km
2014: New York - Rio de Janeiro - FIFA World Cup -- 27.000km
http://www.oranjetrophy.nl
******************************************
Camper Special Club Member

pb24ss · Posted: Thu Oct 25, 2007 9:00 pm Post subject:

i have the same alternator on my westy. the engine came from a donor that had a BA6 installed. perhaps chris at bustedbus has some. he has 1000's of gently used parts.

[email protected]

MadMax78 · Posted: Fri Oct 26, 2007 3:43 am Post subject:

jmstu76 · Posted: Fri Oct 26, 2007 4:57 am Post subject:

I think many of us know what you are going through. I looked at purchasing a 70 amp alternator when I needed a new one, but the lack of correct pulleys available deterred me. I ended up going with a 55 amp again. It is my understanding that these alternators were matched with the BA-6 heaters as mentioned in a previous post. You might call Scott at German Supply. I believe more buses shipped to Canada had these heaters than the buses imported to the "lower 48". Just my .02
_________________
James

'76 Deluxe Sage Green Westy
2258 cc GD case 78mm CW crank, 2.0 H-beam rods 5,325” 22mm pin, JE forged pistons with 15cc dish, JE rings, type 11 clearanced oil pump, CB Eagle 2205 Type-2 “Torque Special” hydraulic cam with matched lifters fed by CB Dual Weber 40 IDF MX with 6” foam air filters, currently 55 idle, 130 main, 200 air correction, 32 mm venturis. 27in General Grabber AT2 All Terrains, Berg Shifter, stock '76 exhaust HPC Ceramic Coated. 11/18/2020

1975 Kombi · Posted: Fri Oct 26, 2007 5:15 am Post subject:

I don't think you need the fan part if it is factory. Mine is the 70A factory install and I did not have anything. It gets its cooling for the rubber elbow from the fan shroud. It should be totally encased and have a inlet on the back of the alt. 022 903 655. The fins would be only for cooling and these were cooled from the fan shroud I think! I will check mine today. It is apart in the basement. It came to me apart. It is entirely possible that the air is pushed through the alt. from the front and the air is added to the air from the shroud to cool the engine. I just can't remember the alt. fan.
_________________
Brett

“He’s decieving you boy! Reach into his pocket and take what he’s got.” Mr. Crabbs.

75 Westy auto
03 Jetta TDI
71 SB
74 Westy
Licensed pilot (single engine land VFR)
--
Rust In Pieces: 72 Bug, 73 Bug, 81 Rabbit LS D 2D, 83 Rabbit D 2D, 84 Jetta TD GL, 85 Jetta D, 68 Z28 RS 302, 91 Passat 16v

1FUNBUG · Posted: Fri Oct 26, 2007 5:36 am Post subject:

I went through this exercise last winter. I bought my Westy three years ago and discovered that it had been upgraded to a 70A alternator. Unforturnately the PO did not install the correct cooling boot. It didn't have the unique pulley/fan either. I installed the correct boot (from Airhead Parts IIRC) but gave up on finding the right pulley. I ran it this year (with the dual battery setup) without issue. I suggest that you verify that it's got the right boot and press on.

1975 Kombi · Posted: Fri Oct 26, 2007 5:41 am Post subject:

Ya I have to check my box of parts. The motor came disassembled. So I will check and get back to ya on this. The elbow boots are different for the 55A and the 70A.
_________________
Brett

“He’s decieving you boy! Reach into his pocket and take what he’s got.” Mr. Crabbs.

75 Westy auto
03 Jetta TDI
71 SB
74 Westy
Licensed pilot (single engine land VFR)
--
Rust In Pieces: 72 Bug, 73 Bug, 81 Rabbit LS D 2D, 83 Rabbit D 2D, 84 Jetta TD GL, 85 Jetta D, 68 Z28 RS 302, 91 Passat 16v

MadMax78 · Posted: Fri Oct 26, 2007 5:56 am Post subject:

Thanks for the replies, at least I now know I'm not the only one having trouble with this Laughing

Settling with the 55A again isn't really an option for me, I just bought a BA6 so I'd like to run the 70A. Also I've got a triple battery (2x Optima 5,5 yellow top and a 4,2 red top) setup going in soon, so the more juice there is to charge the batteries the better.

I'll make sure I get the right cooling boot, that doesn't seem to be a problem since it is available from germansupply and airheadparts.

I'm a bit hesitant about running this alternator without the fan pulley, if the fan wasn't necessary why would VW install them back in the day...
_________________
1978 T2b ASI Riviera Plan I // Camper Special with MegaSquirt Injection & Ignition // 091 with 5.14 R/P and Peloquins LSD
Powered by Just Kampers, German Supply , Busted Bus, Aircooled Technology & DIYAutoTune
2008: Amsterdam - Beijing - Olympics -- 17.500km
2010: Amsterdam - Cape Town - FIFA World Cup -- 26.000km
2014: New York - Rio de Janeiro - FIFA World Cup -- 27.000km
http://www.oranjetrophy.nl
******************************************
Camper Special Club Member

1975 Kombi · Posted: Fri Oct 26, 2007 6:10 am Post subject:

I think the only purpose for the fan pulley is a spacer. If you see a picture of the setup there is an alt plate behind the fan that is totally blocked so there would be no air flowing through the alt.
_________________
Brett

“He’s decieving you boy! Reach into his pocket and take what he’s got.” Mr. Crabbs.

75 Westy auto
03 Jetta TDI
71 SB
74 Westy
Licensed pilot (single engine land VFR)
--
Rust In Pieces: 72 Bug, 73 Bug, 81 Rabbit LS D 2D, 83 Rabbit D 2D, 84 Jetta TD GL, 85 Jetta D, 68 Z28 RS 302, 91 Passat 16v

NOVA Bus · Posted: Fri Oct 26, 2007 3:34 pm Post subject:

Recently went though this entire retrofit for my bus. It's nice that Airhead Parts now makes the cooling boot. I lucked out, found a brand new Bosch (reman) AL108X on eBay for $90 last Dec., but could not locate a fan pulley. So called around finally Interstate Used Parts had one, if you deal with them just be very descript on the part ID (picture/part number helps), it cost me $30, also had it powder coated before install.

I used this one:

http://www.interstateusedparts.com/

Good luck!
_________________
********************************
1977 Transporter / Weekender
- GE engine, L-Jetronic w/ hyd. lifters
- Brown Beige plaid P27 Interior (ED)
http:/[url=http://www.vw-mplate.com/mplate-29638.png]Click to view image
Camper Interior donor:
[/URL]/www.vw-mplate.com/mcode.php?lang=EN&id=721 (M-Code for interior).

MadMax78 · Posted: Fri Oct 26, 2007 5:52 pm Post subject:

Thanks for the tip, I submitted an enquiry through their website, hope they have one left.

Nice find by the way, for just 90 bucks. I thought I already was lucky paying 155 for this one.
_________________
1978 T2b ASI Riviera Plan I // Camper Special with MegaSquirt Injection & Ignition // 091 with 5.14 R/P and Peloquins LSD
Powered by Just Kampers, German Supply , Busted Bus, Aircooled Technology & DIYAutoTune
2008: Amsterdam - Beijing - Olympics -- 17.500km
2010: Amsterdam - Cape Town - FIFA World Cup -- 26.000km
2014: New York - Rio de Janeiro - FIFA World Cup -- 27.000km
http://www.oranjetrophy.nl
******************************************
Camper Special Club Member

MadMax78 · Posted: Fri Nov 02, 2007 12:01 pm Post subject:

Thanks for the replies, I've tried looking through Porsche 914 parts and found one. Victory i thought...

Well I just got the pulley in today and it's not exactly what i was expecting to see, the thing consists of 2 half pulleys and the fan bit. According to ratwell's site the fan blades should be welded onto it. On the sides of the fan blades there's some text: rotation direction arrows, Germany, and it says 151 on one blade and 0045 on another.

So is this the part usable? The fan looks pretty much the same. Hope someone knows.
_________________
1978 T2b ASI Riviera Plan I // Camper Special with MegaSquirt Injection & Ignition // 091 with 5.14 R/P and Peloquins LSD
Powered by Just Kampers, German Supply , Busted Bus, Aircooled Technology & DIYAutoTune
2008: Amsterdam - Beijing - Olympics -- 17.500km
2010: Amsterdam - Cape Town - FIFA World Cup -- 26.000km
2014: New York - Rio de Janeiro - FIFA World Cup -- 27.000km
http://www.oranjetrophy.nl
******************************************
Camper Special Club Member

1975 Kombi · Posted: Fri Nov 02, 2007 12:11 pm Post subject:

Is there not a cover between the fins and the body of the alt. I don't think the fins do anything but space the pulley.
_________________
Brett

“He’s decieving you boy! Reach into his pocket and take what he’s got.” Mr. Crabbs.

75 Westy auto
03 Jetta TDI
71 SB
74 Westy
Licensed pilot (single engine land VFR)
--
Rust In Pieces: 72 Bug, 73 Bug, 81 Rabbit LS D 2D, 83 Rabbit D 2D, 84 Jetta TD GL, 85 Jetta D, 68 Z28 RS 302, 91 Passat 16v

germansupplyscott · Posted: Fri Nov 02, 2007 12:18 pm Post subject:

i couldn't say for sure what you have will work, but here are some photos of the AL108 pulley:

_________________
SL

1975 Kombi · Posted: Fri Nov 02, 2007 12:31 pm Post subject:

Scot do the fins do anything. I thought the alt was cooled by the back from the fan shroud. And at the front was covered to seal the fan shroud.
_________________
Brett

“He’s decieving you boy! Reach into his pocket and take what he’s got.” Mr. Crabbs.

75 Westy auto
03 Jetta TDI
71 SB
74 Westy
Licensed pilot (single engine land VFR)
--
Rust In Pieces: 72 Bug, 73 Bug, 81 Rabbit LS D 2D, 83 Rabbit D 2D, 84 Jetta TD GL, 85 Jetta D, 68 Z28 RS 302, 91 Passat 16v

germansupplyscott · Posted: Fri Nov 02, 2007 1:13 pm Post subject:

the front of the alternator is open. there are 'ribs', but there are openings. i don't think the alternator would explode if you had the wrong pulley (without the fan blades), but the 55A pulley on a 70A alternator might cause some alignment issues for the belt. in an earlier post you mentioned that the fan acts as a spacer, this is not true on the 70A pulley. i've seen alternator pulleys with blades that were like that, but this one is not. the blade portion is permanently attached to the pulley, and the pulley itself bears against the shaft of the alternator, the pulley surface is well clear of the shaft when it is installed - it is not that sort of "sandwich" type arrangement.

the cover that you are referring to might be the plastic ring that takes up the space between the outer edge of the alternator and the metal cover plate.
_________________
SL

1975 Kombi · Posted: Fri Nov 02, 2007 1:28 pm Post subject:

Ya that is what I am thinking about the ring. OK Will a '80 - '83 Vanagon have the same pulley.
_________________
Brett

“He’s decieving you boy! Reach into his pocket and take what he’s got.” Mr. Crabbs.

75 Westy auto
03 Jetta TDI
71 SB
74 Westy
Licensed pilot (single engine land VFR)
--
Rust In Pieces: 72 Bug, 73 Bug, 81 Rabbit LS D 2D, 83 Rabbit D 2D, 84 Jetta TD GL, 85 Jetta D, 68 Z28 RS 302, 91 Passat 16v

1FUNBUG · Posted: Fri Nov 02, 2007 1:44 pm Post subject:

Again, I've run mine throughout the summer with the 55A pulley without incident. It's also keeping two batteries charged. I'd rather have the correct pulley (if it were a $10 or $15 item). Considering that my cooling boot was all jacked up and cooling at a fraction of what it should have been (prior to its discovery this last winter) I decided to roll with the 55A pulley and the right boot.
_________________
1FUNBUG

71 Beetle, 1776, dual Kadrons
77 Westy, Camper Special 2.0 F.I.


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