CorvAircraft> variable valve timing on corvair?

[David Downey]

Thanks for the comments Eric. It is amazing that it is that lightweight if it has the balance shafts!!!

Eric Overton <eric at overtonphoto.com> wrote:  David --

At 05:56 AM 1/2/2008, you wrote:
>Does that mean that the 3 cylinder Suz engine has balance shafts and 
>the 4 does not? I had assumed from all the messages on that list 
>that they were simply the same block with a cylinder lopped off for 
>the 3 cylinder (sorta).

I don't know about the Suzuki's (and not being a Geo Metro 
owner, I'm not 100% sure about them, either), but I'd be surprised if 
any 3 cylinder engine didn't have at least one -- and more likely two 
-- balance shafts with phased, counter-rotating 
counterweights. That's just something that you have to do with 3 
bangers, and contrary to (some) popular belief, there's no way around 
it with internal engine balancing of the primary components. You can 
certainly *reduce* vibration that way, but you'll never get rid of it entirely.
Bear in mind that a lot of 4 bangers also have balancing 
shafts, so it's not that big a leap...

-- Eric


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  Dave Downey
  Harleysville (SE) PA
  100 HP Corvair


       
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