A/C Delete

[aviologist]

Hey all,
 I am wondering if any one could help me me with the my a/c delete. I have a 1992 td with factory air and the system has been open for a long time and I just want to remove it all. I want to pull the pump off but then the alt needs to line up to the crank and water pump(?). Do I use a different bracket or alt? I can not see what is difference is between the bracket that bolts to the block( I got one from a non a/c car) and the one I have now. Any help would be great.

[rallydiesel]

It's really the alternator that is different. There is also a simple bar support that attaches to the existing engine bracket. The bar support has a long slot to adjust the alternator belt tension. The alternator will have a different offset pulley to line up with the crank pulley.

[aviologist]

Well that is good to hear....taking that bracket off with the pump in place would have been a challenge. What alt would fit. I could just go with the 65amp but would a gasser one fit? There are probably a million different  alts for a vw finding the right one is the trick.Thanks again

[ilikevwdiesel]

The easiest solution would be to remove the AC comp and install a non AC alternator from an 85 to 92 car. It has to be a diesel unit. You'll need the alternator with correct pulley, the pivot bolt, the adjustment bracket and the two bolts for that. You can use your AC alt if you fashion a custom adjustment bracket and use a longer belt. If you grind material off the cast iron bracket it will allow you to use a shorter belt.

[dieselputput]

what i did was actually ground down the hump on the top mounting hole of the alternater where the support bar bolts into and then put a spacer in.  because there are not two tabs the spacer is key.  got a longer belt and fabed up a bar and used the original hole that mounted to the main bracket (which was now on the bottom side) and used that as my tension setting.   i would recomend putting a washer behind your pulley to make the belt perfectly straight but if you don't it might be like 1mm off.  was going to continue to fab up a new bracket for it all until my timing belt fiasco 

[Rabbit on Roids]

so, why is it that every a/c mk2 ive seen ahs a different crank and water pump pulley? the alts are all the same on the ones ive seen, just the water pump and crank pulley are closer to the engine to line up the belts. ive never seen this "non ac alt pulley" and was just wondering if the cars ive seen were all ghetto fabbed, or whats going on here. another thing, a longer pulley on the alt to line everything up is a bad idea, it puts much more load on the outside bearing in the alt.

[dieselputput]

http://www.toywagen.com/ has a a/c delete alt pulley all it does is align the belts.  i see what you are saying but the bolt mount is recessed in so i really doesn't put any more strain on it.  but also the cars you see might have replaced all the lower pulley's to a non a/c car set up which would put them closer to the block and change up the alignment

[Rabbit on Roids]

the pulley is still longer. clamp a 4" vise grip on a shaft, cant even come close to bending the end of the shaft can ya? take and clamp a 12" pair of vice grips to that same shaft.. now we can easily bend the shaft, because we are working with a bigger lever. just because the position of the nut doesnt move, does not mean there is not more force being exerted on the shaft. a longer pulley will wear out your alt faster. i dont particularly think VW had a very good idea using such a long pulley on an alt. lots of leverage there that could have been eliminated.

and yes, every FACTORY non-ac car ive seen has different lower pulleys, the alt pulleys are the same on every VW ive seen. (within year ranges that is)

[aviologist]

So it turns out that I have a non a/c alt in my pile o' junk and it is a 65amp but the pulley is different and sticks out about the width of a belt. I eyeballed it to the mount on the car and it looks like we might have a winner. I don't think the crank pulley could get much closer as it is almost against the timing cover. Any way this week end looks like I'll get to get my hands dirty once again.....Thanks for all the advice!

[Rabbit on Roids]

thats really weird.. my lower pulleys stick out quite a bit from the timing cover, about the width of a belt. and the cars ive seen that had different pullies, they were so close to the timing cover that the belt would rub on the cover a little bit. i dont doubt you are right, and i dont doubt im right either, cause i seen it with my own 2 eyes. its weird that VW did it both ways tho..