It would be good to know what sort of Vanagon or T3 derivative this is. For example an auto trans might make a clunk sound as it engages. Or maybe a clanking of the driveshaft on a Syncro. Or the banging of a Swedish Doka  support canopy support of a Vindic canopy. 

BenT
sent from my electronic leash

On May 15, 2011, at 9:11 PM, John Goubeaux <john@UCSB.EDU> wrote:

> Guys,
> 
> I have roughly 500 + miles on a new GoWesty 2.2 engine that I just
> installed and am curious about an odd noise it makes, but only when it
> is warm, eg been brought up to temp. On startup, ie cranking, just
> before it starts and when turning of the engine there is a small clunk
> noise. Almost as if before and after  ignition takes place a compression
> sound as the engine comes to a stop. The engine runs fine and there are
> no odd noises while running only at start and stop. I have not been able
> to listen to it back at the engine compartment yet but am planning to do
> so. Nothing is loose that can explain this and maybe it is a normal
> sound and is compression on these engines? Oddly it only exhibits this
> noise when hot though. Could it be a loose head? Sticking valve?
> 
> Logically I am being very careful to break it in properly and am
> listening and watching its behavior carefully and want to ensure that
> this is not something that is going to end up being an issue down the road.
> 
> Any ideas ?
> 
> -john