Question for the brain trust.
Is the factory balance of the fan 'good ' or should it be rebalance on a rebuild?
Thanks in advance for your suggestions.
oh is so, where in the La area to do that?
Thanks for suggestion..
Peter, if you're taking it apart (to clean, blast, paint, etc.), make note of where the factory installed balance weight is on the pulley in relation to the timing notch in the cast fan part. It should go back together in the same position to avoid a big rebalance job (ask me how I know)
Have the whole rotating system balanced (crank, flywheel with clutch and pressure plate, and the fan/pulley all attached). Have the shop balance your pistons and rods as well. You'll be glad you did in case you ever over-rev the motor
Hi Mike.
Balance everything.
If you have one part out of balance, you wasted you time and money having the rest balanced.
That's my line of thinking
We don't really offer the service anymore (even though its still on the site) but this link will give you some information to support why everything needs to be balanced.
http://www.aircooledtechnology.com/index.php/dynamic-balancing
Jake,
Your comments, you are well regarded on my end.
Most of the outfits that I've contacted mentioned that it's not needed as it's already balanced from the factory. Today, I found and dropped off my fan at Auto Dynamic Balancing in Baldwin Park Calif # 626-962-9136 for them to check / balance. Well.... it was almost 1/2 once OFF....YA factory all right! Now, if it were I and I just rebuilt a type 4 and just bolted the fan back on...I would take if off and send it to Rod the owner so he can balance it for you. FYI.. we learn some thing every day!
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Have you balanced the stock pistons.
Jake, it's awesome when you share the science of building engines! Quantification indeed.
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