New Front Pulley/Degree Wheel

dangerous 23 Windows of Awesome

5,901 posts · joined Jan 2005 · 8 Jan 2006, 11:18 am

#445178

Here is the new pulley that I made from aluminium to go on my engine.
I shrunk fit a thick washer into the outside, and a small steel ring on the inside to stop it biteing onto the crank shoulder.
I got a degree ring that I will glue into place when I have the engine locked at TDC.

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westi wrote:That's mad Alan.

hellbugged 48's and straight cuts

5,080 posts · joined Apr 2003 · 8 Jan 2006, 11:32 am

#445184

Dave,

I am so stoked you got a camera for christmas😵

thanks for all these piccies and the info along with 'em, inspirational stuff.

dangerous 23 Windows of Awesome

5,901 posts · joined Jan 2005 · 8 Jan 2006, 11:34 am

#445185

I was concerned and interested in the topic of vibration dampers and began to modify a Chev "Fluidampr".
But then I read that solid heavy pulleys REFLECT waves, not absorb, as some companies woulds have you believe.
In the end, I concluded that the weight would be more of a hinderance than an advantage,
with such a short crankshaft (even though Subarus have them).
I have seen many heavy pulleys destroy the nose of a good crank.
This is not the pulley's fault, only that the VW bolt and key
was never intended to support such a mass that is trying to reflect a vibration.
Also, the majority of Aluminium pulleys just dont fit the crank like the original.
The CE pulley is very nice (aluminium), as is the light Berg standard weight pulley (steel). Both fit and finish with these.
Proper vibration dampers are actually designed to a particular application, so on the volksy, only the "Fischer" as like this.
But it is also heavy and expensive. For this reason, I don't think it would give any performance gain (like weight reduction does), but may add to crank life if the mass and damping medium are correct.

[ Edited on 8-1-2006 by dangerous ]

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westi wrote:That's mad Alan.

Craig Paton Wolfsburg Wizard

620 posts · joined Apr 2004 · 9 Jan 2006, 6:47 pm

#445682

Volkswagen certainly knew what they were doin when they designed the pulley, fan & Generator set-up!

I believe they factored in those very issues!

C

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