| jhvw1976 |
Fri Nov 20, 2009 3:30 pm |
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My bugs been running well, except for a dim GEN idiot light when I have the headlights on and are at a stop. I am going through fan belts like crazy though.
If there's a post that describes this procedure it'd be great to be pointed to it, couldn't find it on search.
So, I adjust the fan belt tight and my alternator makes grinding noise
I was thinking it was the fan and a loose alternator or fan housing, things I tried from other posts I've found
When I go closer to the proper amount of deflection it runs fine, but the inside of the fan belt starts to wear very quickly.
I've driven for 5 years on the same fan belt before this problem started.
I tried different ways to make sure the pulleys were aligned, and neither had any free-play. They check out ok.
Anyone have any ideas? I'm planning on spending the evening watching bug me videos and my bently manual to see if I missed something(s).
Thanks,
Jon
1976 Standard FI beetle |
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| anemol |
Fri Nov 20, 2009 6:17 pm |
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Just as soon as I post this there will be a thousand people that will disagree. Your belt is to tight if its wearing out! A loose belt will never wear out. You should have about a half inch movement in your belt when it is hot. As for your Gen light glowing dimly at idle with your lights on is normal. Lastly, if you have a Altenator, use a belt for a Altenator. There are Altenator belts and Generator belts use the correct one.
Burl
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| Ken J |
Fri Nov 20, 2009 6:28 pm |
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Unabashed plug:
www.bullyspulleys.com |
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| Glenn |
Fri Nov 20, 2009 7:16 pm |
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Ken J wrote: Unabashed plug:
www.bullyspulleys.com
Ever see a fan explode?
You will. |
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| Mudpump |
Fri Nov 20, 2009 7:28 pm |
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Glenn wrote: Ken J wrote: Unabashed plug:
www.bullyspulleys.com
Ever see a fan explode?
You will.
Why? Crank pulley too small?
. |
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| Glenn |
Fri Nov 20, 2009 7:31 pm |
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Mudpump wrote: Glenn wrote: Ken J wrote: Unabashed plug:
www.bullyspulleys.com
Ever see a fan explode?
You will.
Why? Crank pulley too small?
.
No slip... just like the serp belts. Even with a welded fan you can over accelerate the fan and BANG.
The problem with V-belt wear is misalignment of the pulleys. I've had belts last 50,000+ miles with a V-belt setup. |
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| bugninva |
Fri Nov 20, 2009 8:59 pm |
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Glenn wrote: Ken J wrote: Unabashed plug:
www.bullyspulleys.com
Ever see a fan explode?
You will.
are you saying that if you use a serpentine system your fan will explode? Its a shame you are making such blanket statements, I would expect more from you Glenn. Especially since you know(if nothing else from previous threads) that there are many more folks running the systems without a problem than have reported a problem... |
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| Glenn |
Fri Nov 20, 2009 9:03 pm |
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Yawn...
Miss a shift and you can expect a non-welded fan to go boom.
Have a high horse power engine and you stand a good chance of over accelerating the fan...even a welded on.
I had one of the serp belt manufacturers admit there is no performance benefit, they are just for looks. |
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| bugninva |
Fri Nov 20, 2009 9:04 pm |
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Glenn wrote: Yawn...
.
that's what I think when someone that is considered "respected" in the community throws out a blatant opinion and represents it as fact.... You do that often, ya know? |
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| Glenn |
Fri Nov 20, 2009 9:07 pm |
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Do a search and you'll find many others share the same opinion.
If i remember correctly John C. of Aircooled.net has stated that even a welded fan will explode if over accelerated with a serp belt.
Attacking me will not change that it happens way too many times. |
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| bugninva |
Fri Nov 20, 2009 9:08 pm |
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Glenn wrote:
Attacking me will not change that it happens way too many times.
there's no attack... but you are backpedalling now... good job...now it's "too many times" but before it was definite...
Glenn wrote:
If i remember correctly John C. of Aircooled.net has stated that even a welded fan will explode if over accelerated with a serp belt..
take that out and it's accurate. |
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| Glenn |
Fri Nov 20, 2009 9:14 pm |
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Here's what some other well respected people have said.
Stripped66 wrote:
No it's not; the serpentine belt system is a LIABILITY at the track :roll:
The stock v-belt set-up begins to slip around 4000-4500 rpm (engine rpm); the serpentine belt system will not slip. The stock cooling fan, even when welded and balanced, can only spin so fast before it fails and destroys itself/your engine. At high engine RPMs, the slipping v-belt generally will not spin the cooling fan fast enough to destroy it. But even members of this forum have had their cooling fans explode at the track because their serpentine belt system spun the fan too fast when at high engine RPMs.
Eaallred wrote:
No advantage at the track, since serp belts are well known for gernading fans. You need the slip of the v-belt to make it live
The only advantage to a serp system is looks. Nothing more.
bugninva wrote: there are so many things we do to our dear vw's that have very little to no gain, that it's funny how some subjects get beat to death... some subjects get into the "worth it" or "not worth it" to the point it's humorous... we do these things for various reasons... usually personal preference.... not everything has to be about pure performance, or we'd be very limited in our choices... I, for one, am glad we are not...
turboblue wrote:
The serpentine debate comes up about every 6 months.
If you want one, buy it.
If you don't..........well don't.
It doesn't give a performance advantage other than easy off and on in the staging/return lanes.
As long as one understands they don't slip and can explode a fan at high RPMs they are fine to use.
I like the ease of maintenance aspects so I have one.
It's all a matter of preference and I prefer them over the split pulley/shim pack arrangement after using one for several years.
I don't care that others don't use them.
That's their choice and I don't condemn anyone for their choice. |
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| bugninva |
Fri Nov 20, 2009 9:17 pm |
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| sorry, but you don't "get it".... |
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| tundrawolf |
Fri Nov 20, 2009 9:18 pm |
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| If there's a grinding noise somewhere and you are eating belts I'd suggest replacing the bearings in your generator/alternator. It's cheap and easy to do. |
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| Glenn |
Fri Nov 20, 2009 9:19 pm |
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bugninva wrote: sorry, but you don't "get it"....
I get that if you drive a stock engine like an old lady you most likely won't explode the fan. |
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| bugninva |
Fri Nov 20, 2009 9:22 pm |
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Glenn wrote: bugninva wrote: sorry, but you don't "get it"....
I get that if you drive a stock engine like an old lady you most likely won't explode the fan.
again, making general statements for dramatic affect... folks have exploded fans(I haven't, but had one swell enough it wouldn't come out of the shroud) with stock setup... So I guess we could say that if you run a fan it will explode... :lol: |
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| bugninva |
Fri Nov 20, 2009 9:23 pm |
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bugninva wrote: Glenn wrote: bugninva wrote: sorry, but you don't "get it"....
I get that if you drive a stock engine like an old lady you most likely won't explode the fan.
again, making general statements for dramatic affect... folks have exploded fans(I haven't, but had one swell enough it wouldn't come out of the shroud) with stock setup... So I guess we could say that if you run a fan it will explode... :lol:
(P.S. If I have fire breathing 3L engine and drive it like a granny will it explode the fan? I guess it will have to... :wink: ) |
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| Glenn |
Fri Nov 20, 2009 9:23 pm |
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bugninva wrote: bugninva wrote: Glenn wrote: bugninva wrote: sorry, but you don't "get it"....
I get that if you drive a stock engine like an old lady you most likely won't explode the fan.
again, making general statements for dramatic affect... folks have exploded fans(I haven't, but had one swell enough it wouldn't come out of the shroud) with stock setup... So I guess we could say that if you run a fan it will explode... :lol:
(P.S. If I have fire breathing 3L engine and drive it like a granny will it explode the fan? I guess it will have to... :wink: )
Quoting yourself?
Back to the topic..... if the pulleys are misaligned the belt will wear. |
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| bugninva |
Fri Nov 20, 2009 9:25 pm |
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yes, it was an add-on, hence the "P.S."... and edit would have been just fine, but I know as soon as I'm done yanking your chain a bit it will all go bye bye... It's all for effect anyway, just like your original reply... :wink:
Glenn wrote:
Back to the topic..... if the pulleys are misaligned the belt will wear.
agreed. |
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| ach60 |
Fri Nov 20, 2009 9:42 pm |
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Glenn wrote: Here's what some other well respected people have said.
Stripped66 wrote:
No it's not; the serpentine belt system is a LIABILITY at the track :roll:
The stock v-belt set-up begins to slip around 4000-4500 rpm (engine rpm); the serpentine belt system will not slip. The stock cooling fan, even when welded and balanced, can only spin so fast before it fails and destroys itself/your engine. At high engine RPMs, the slipping v-belt generally will not spin the cooling fan fast enough to destroy it. But even members of this forum have had their cooling fans explode at the track because their serpentine belt system spun the fan too fast when at high engine RPMs.
Eaallred wrote:
No advantage at the track, since serp belts are well known for gernading fans. You need the slip of the v-belt to make it live
The only advantage to a serp system is looks. Nothing more.
bugninva wrote: there are so many things we do to our dear vw's that have very little to no gain, that it's funny how some subjects get beat to death... some subjects get into the "worth it" or "not worth it" to the point it's humorous... we do these things for various reasons... usually personal preference.... not everything has to be about pure performance, or we'd be very limited in our choices... I, for one, am glad we are not...
turboblue wrote:
The serpentine debate comes up about every 6 months.
If you want one, buy it.
If you don't..........well don't.
It doesn't give a performance advantage other than easy off and on in the staging/return lanes.
As long as one understands they don't slip and can explode a fan at high RPMs they are fine to use.
I like the ease of maintenance aspects so I have one.
It's all a matter of preference and I prefer them over the split pulley/shim pack arrangement after using one for several years.
I don't care that others don't use them.
That's their choice and I don't condemn anyone for their choice.
You boys did this augument a few months ago, and Glenn won then.
Let it go.
X2 the belt is mis-aligned, fix mis-alignment don't buy needless new parts. |
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