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Originally Posted by big red beast
i stil;l dont get this thing about upto 3inch
why would you bother to run a SYE for a 3i9nch lift? i currently run a 2.5 without any vibes at all - now if i wanna a SYE i would atleast do a 4inch lift otherwise it just seems to be a waste of money
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It will mean that you still need to buy a CV driveshaft to suit your lift.
An SYE (otherwise known as a short shaft kit!) reduces the length of the yoke protruding from the back of the transfer case (also is of larger diameter ie:stronger). What this allows for is a longer driveshaft (tail shaft whatever you want to call it!), which in the case of our shortwheel based TJs is very important. A longer driveshaft allows for smaller angles at each uni joint (transfercase end and diff end), which in turn produces less vibration from the joints (as uni joints bind up at high angles). Less vibes means you can run larger lift before getting bad vibes, which of course is the whole reason for getting an SYE.
Usually when you get a driveshaft to match your SYE it will have a slip design sot hat its length can vary as the rear axle move up and down in an arc. And most of these allow enough movement to satisfy upto 6" lift or thereabouts.
Abviously the driveshaft setup that is being talked about above has a driveshaft that is still quite short to only allow 3" lifts. So another driveshaft would be on the cards to satisfy most peeps lifts if they need an SYE so add that to the cost of this setup and duduct that from the price quoted as you won't want there driveshaft.
All this info is just what I have read online from various sources, I to am in the market for an SYE and CV driveshaft within the next year.
