Quote:
Originally Posted by Piotrsko
The cranks have counterweights, them roundy things at the ends of the journal.
There's even a limit as to how much con rod weight you can use, and I have had shops drill the cranks when I got I beam rods. I agree, they dont have dampners because the crank is short and beefy so doesn't flex much.
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Peformance aftermarket VW cranks have counterweights. But the stock ones do not.
Quote:
Originally Posted by freebeard
Crankshaft length is shared by a V-4. The boxer [four] has an inherent balance compared to a V or inline arrangement.
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Good point from you both!
You can ignore the rest, it's just me bragging.
I did balanced the heck out of my Type 1 dual port engine when I rebuilt it. I had the crank (stock without counterweights) dynamically balanced along with the flywheel, clutch plate assembly and even the pulley. Then I took and got all the pistons, pins and bearings within a fraction of a gram of each other and also suspended the connecting rods over two scales so I could balance each rod end so all the small ends and all the big ends also weighed exactly the same.
I've seen the same engine in a friend's Super Beetle bounce all over the place just idling. My engine ran smooth as butter, which is one reason the guy who bought it was so impressed.