forcefedEG wrote:if your concerned... pull the valve cover and oil pan on the y8 before u drop it in and make sure its decently clean... if nothing else keep the b7 for a later project...
X2
If you are really that worried, tear down the y8 get it cleaned, get the clearances checked (or do it yourself). Replace the bearings, seals, gaskets, etc. Then you have a brand new engine, pretty much.
If you are planning on building the car more, like a higher compression N/A build or a turbo, you REALLY want to switch to the d16y8. There is next to no after market support for the b7, while there is tons for the y8. If you have grand plans for the car, do the full y8 swap, you'll thank yourself later on.