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Sat Feb 14, 2004 5:17 pm

What is the story on this pulley? Is it anything special? Someone told me its a gene berg pulley that they dont make anymore? Wondering on approx value as well.
Thanks

Sat Feb 14, 2004 5:23 pm

They still make them.

Sat Feb 14, 2004 5:25 pm

That would be a Berg "Equalizer" pulley they came out quite a few years ago... basic theory is adding weight to the front of the crank acts as a "harmonic balancer" like so many other engines have...

I have never ran one, but like anything else heard good things, and some scoffing from others about "just another marketing thing"

I think they still sell them or a version of them, did you check their website?

Maybe some of the more knowledgeable Hi-performance guys will enlighten us further.

Sun Oct 19, 2014 12:52 pm

digging up an old thread...
does anyone have an idea of how much heavier the berg pulley is than a stock item?

Sun Oct 19, 2014 1:03 pm

I think they're 8.5 pounds.

Sun Oct 19, 2014 1:04 pm

They are 7.5 to 6.25 lbs in weight, depending on the model. The power pulley being the heavier of the two. I am guessing more weight to make up for smaller diameter.

Sun Oct 19, 2014 3:02 pm

The "achiever" is advertised as 3.25lbs, the "equalizer" is 6lbs, for stock size. More info on the theory:
http://www.geneberg.com/cat.php?cPath=7_219_2833

Sun Oct 19, 2014 3:11 pm

ah, ok... so I am bolting a second pulley to my stock 36hp pulley for a charger...
do we suppose that if it is under 3lbs it will be ok?

it is actually 1.4lbs... plus an adaptor plate not yet made... just thought I would ask...

Sun Oct 19, 2014 4:45 pm

pig-pen wrote: ah, ok... so I am bolting a second pulley to my stock 36hp pulley for a charger...
do we suppose that if it is under 3lbs it will be ok?

it is actually 1.4lbs... plus an adaptor plate not yet made... just thought I would ask...

If it can be ballanced, sure.

PS, I had thought of making a dual pulley by grooving out a second belt groove on a Berg Pulley or the EMPI version of the pulley.

Sun Oct 19, 2014 5:00 pm

Juanito84 wrote: pig-pen wrote: ah, ok... so I am bolting a second pulley to my stock 36hp pulley for a charger...
do we suppose that if it is under 3lbs it will be ok?

it is actually 1.4lbs... plus an adaptor plate not yet made... just thought I would ask...

If it can be ballanced, sure.

PS, I had thought of making a dual pulley by grooving out a second belt groove on a Berg Pulley or the EMPI version of the pulley.

Machining a second groove into the 6lb pulley is a good idea, there is a good amount of material there. If adding an additional pulley on top of the stock pulley, maybe consider the Berg bolt as it's a bit longer than stock.

Sun Oct 19, 2014 6:05 pm

Air conditioned vw's had two pulleys on the crank.

Sun Oct 19, 2014 6:23 pm

Yes, but its not the same size.

Mon Oct 20, 2014 1:31 am

yeah, I have the 7" 36hp pulley, and a 5.75" poly-v charger pulley to bolt together.

maybe i would be better getting the whole thing machined as one unit, but hen I wouldnt be able to mess around changing pulleys for more boost etc...

Mon Oct 20, 2014 3:43 am

If you plan on running a heavy pulley, make Sure you have it balanced to your crank/flywheel/clutch assembly BEFORE the motor is built.
Otherwise you are wasting your Time and money.

Mon Oct 20, 2014 3:43 am

If you plan on running a heavy pulley, make Sure you have it balanced to your crank/flywheel/clutch assembly BEFORE the motor is built.
Otherwise you are wasting your Time and money.

Mon Oct 20, 2014 3:43 am

Mon Oct 20, 2014 6:33 pm

Mon Oct 20, 2014 6:33 pm

Mon Oct 20, 2014 6:33 pm

Mon Oct 20, 2014 6:48 pm

Brian wrote: Yes, but its not the same size.

I have a pulley that is about 7", and has two grooves. It is cast aluminum, looks cheap. I thought it was from a AC kit but not sure.

Good idea to use the berg or empi pulley for a supercharger! I'm doin that too, eventually :D I bought the empi and it is not as tight fit as berg, but maybe that is good thing