MICRO-V setup

[Joost]

Hi,

I was wondering...
I've made a Micro-V pulley set for the crank and the alternator + tension pulley. It's all lightweight aluminium for faster reving.
But I was wondering that I really need the damper? I'm using an electric waterpump, so the only load is my 200amp alternator.
What could get hurt? The bearings off the alt only or do I forget something.
The seven main bearing crank of my 250 can't vibrate that much I tought?

Can I take the risk and don't use the damper?

Tnx in advance.

Greets
Joost from Belgium

 

[addo]

Have you lightened the flywheel?

I can't see how it really would matter except that I thought all sixes were balanced with the damper and flywheel attached. Also, how will you create a running surface for the front oil seal?

Got pics of the pulley set you made?

 

[Joost]

I 'll post pictures this weekend.
I've made the crankpulley exactley as the stock damper. The only difference is the material (alu) en the outside diameter is a little smaller (underdriven) and for a micro V.
I've balanced it on a rotary balancer so the balance is 0.
The stock damper was not balaced (15gr).
Do I have to unbalance my new pulley exactly as the stock damper?
Would that solve the balancing problem?

Tnx.

 

[addo]

Hmm... 15g is quite a lot, isn't it? Anyone else have an opinion?

How original is the motor otherwise? Is it possible that the original damper has slipped on its rubber ring? I've never found a way to tell other than by TDC; there are no match marks on the inner and outer pieces that I know of.

If you are waiting to get started again, maybe leave it at zero and see if there is much vibration.

Regards, Adam.

 

[Lazy JW]

Go for it!

The late Gene Berg of air-cooled VW fame discovered a need for MORE weight on the crank pulley to dampen vibrations that were causing crankshaft/bearing problems on high-output VW's. Totally different application, but the point is, you never know until you try.
Joe

 

[Joost]

Tnx for the opinions!

I go for it and try.

I'll keep this topic up to date.

Tnx in advance.

Greets
Joost